Density, Sound Velocity & Concentration


  • Highly precise determination of the concentration of a media such as sugar, alcohol, acid or caustic
  • Based on measurement of density
  • Ideally suited for monitoring the quality of raw materials and final products
  • Hygienic design; CIP-capable
  • Maintenance free


  • Highly precise determination of the concentration of a media such as sugar, alcohol, acid or caustic
  • Based on measurement of the speed of sound through a liquid
  • Ideally suited for monitoring the quality of raw materials and final products
  • Hygienic design; CIP-capable
  • Maintenance free


  • Highly precise determination of the characteristics of 3-component liquids
  • Combination of fluid density sensing and sound velocity measurement
  • Applicable e.g. to monitor fermentation (sugar vs. alcohol) or in formaldehyde production (CH4O vs. CH2O)
  • Hygienic design; CIP-capable
  • Maintenance free

Carbon Dioxide (CO2) in liquids


  • Precise and immediate determination of dissolved CO2 content in liquids
  • In-line measurement based on abrupt localized decompression
  • Applicable e.g. for beer, carbonated soft drinks and sparkling water
  • Hygienic design; CIP-capable
  • Easy maintainable

Oxygen (O2) in liquids and gases


  • Precise and immediate determination of O2 content in liquids and gases
  • Optical principle of measurement
  • Designed for high-end requirements 
  • e.g. to monitor O2 in beverages, boiler water or inert atmospheres
  • Hygienic design; CIP-capable 
  • Very easy maintainable

Electro Magnetic Flowmeter

Electro Magnetic Flowmeters are based on Faraday’s Law of Electromagnetic Induction. When the conductive fluid flows through a magnetic field of the sensor, an electric voltage proportional to the volume flow is generated between the pair of electrodes and transmitted to the output device.

  • The flow and volume will be displayed at the electronic transmitter
  • No disturbance or restriction of flow
  • No moving parts – no wear and tear, virtually no pressure loss
  • Insensitive to fluid density, temperature, pressure, viscosity
  • Can be used for different types of conductive liquids (calibration with water required)

Applications: flow and energy measurement for water based liquids, (conductive liquids)

Variable Area Flowmeter

The float of a VA Flowmeter easily moves up and down in the conical measuring tube. The vertical position of the float, obtained as a function of the flow velocity of the measuring media, is an indication of the flow rate. This flow rate can be read directly on the scale of the measuring tube.

Turbine Flowmeter

Fluid entering the meter first passes through an inlet flow straightener that reduces its turbulent flow pattern. Fluid then passes through the turbine, causing the turbine to rotate at a speed proportional to fluid velocity. As each turbine blade passes through the magnetic field generated by the meter’s magnetic pickup, an AC voltage pulse is generated. These pulses provide an output frequency that is proportional to volumetric flow.

  • High accuracy, ±0.2%, ±0.5%, ±1.0%
  • Small, compact and lightweight, easy install and maintenance, wide range
  • opt. Sanitary Versions: clamp-on, anti corrosive material

Notice: for clean water or oil based applications, a filter is necessary if the liquid is not clean (containing solid particles, etc.)

Turbine Flow Meters are also availabe for Gas Applications.

Gas Turbine Flowmeter

The operation of the International Gas Turbine Meter is based on the measurement of the velocity of gas. The flowing gas is accelerated and conditioned by the meters straightening section. The straightening vanes prepare the gas flow profile by removing. undesired swirl, turbulence and asymmetry before the gas flows to the turbine wheel. The dynamic forces of the flowing fluid cause the rotor to rotate.

The turbine wheel is mounted on the main shaft, with special high precision, low friction ball bearings. The turbine wheel has helical blades that have a known angle relative to the gas flow. The conditioned and accelerated gas drives the turbine wheel with an angular velocity that is proportional with the gas velocity.

  • 180 degrees rotatable head, and easy installation and maintenance
  • Good repeatability: 0.05%~0.2% for short period
  • Temperature and pressure compensation available

For unclean media we advise to use a filter.

Coriolis Mass

This unique combination of design and in-built technology gives outstanding performance and accurate results for extreme applications with

  • very high pressure, changing pressure 
  • external vibration and tensions
  • very low flow rates, (big amplitudes excellent signal to noise ratio)
  • high temperature
  • corrosive and abrasive media 
  • extreme resistance to gas bubbles in liquid streams 
  • multi-functional measurement (density, temperature) 
  • fiscal custody transfer  

 Rheonik Mass flow meters are reliable:

  • safe and stable with long life cycles
  • low maintenance
  • low energy consumption, (typically less than 300 mW, intrinsically safe)
  • ATEX and CSA approval for hazardous areas


  • Flow rates from 30 g/min to 1500 tonnes/hr
  • Diameters  from ½” up to 12 inch (DN 300)
  • Pressure over 1,000 bar (14,500 psi)
  • Temperature from -196°C to +395°C 
  • Hazardous area certified versions available (intrinsically safe, ATEX, CSA etc.)
  • Available in stainless steel, Alloy C22, Duplex, Tantalum, Monel, others
  • variety of Transmitters (analog, digital, serial, HART, LCD output)

Flap Flowmeter

The primary measuring element is a flap, which is deflected by the flow of the medium. The deflection angle is a direct indication of the flow through the pipe.

Thermal Gas Flowmeter

Fixed and portable consumption measurement in compressed air, nitrogen, natural gas, methane, helium, argon, carbon dioxide, hydrogen, SF6; measuring laminar flow, burner supply air, leakage flows; monitoring safety-related installations, also in aeronautical applications.

  • for use in air, compressed air, nitrogen, natural gas, methane, deposit gas, argon, helium, propane, butane, CO2, SF6
  • probe for pipeline installation from Di 25 mm, measuring tube from Di 8 mm measurement of gas mass flow
  • standard flow velocity 0.08 m/s to 200 m/s, volume flow up to 0.04 m3/h
  • time constant of under 1 s
  • for applications in Ex areas
  • M-Bus, WLAN

Vortex Gas Flowmeter

Flow rate and flow velocity measurement in wet and/or particulate-laden gases, biogas or exhaust gas, also according to Clean Air Guidelines, (TA Luft). Flow rate measurement of sludge aeration air, sewage gas, landfill gas, water vapour and engine intake air on test stations, superheated steam. Flow velocity in climatic wind tunnels, diluted car exhaust gas, traffic tunnels and in nuclear reactor technology.

  • for application in condensate and particle laden aggressive gases 
  • probe for pipeline installation from Di 80 mm, measuring tube from Di 25 mm
  • combi probes for flow and temperature
  • sensor with no moving parts
  • German TA Luft 13&17, SIL, Ex Certificates
  • time constant 65 ms
  • low pressure drop

Vortex Flowmeter

Vortex Flowmeters measure the volumetric flow of fluids (gases, vapors, liquids) in closed pipes. It is based on the Vortex shedding principle, (or Karman Vortex Effect). The fluid passing through the measuring tube is separated by a triangular prism with a broad flat front and generates two lines of eddies or vortices, the Karman Vortex shedding street. The vortex shedding frequency is proportional to the flow rate.It is detected by a sensor with 4 piezo-electric elements and converted into an electronic output signal.

Ultrasonic Clamp-On Flowmeter

for permanent installation

Ultrasonic Clamp-On Flowmeter series measure the velocity of a wide range of liquids and pipe sizes up to 5000 mm diameter with high accuracy and reliability to calculate the volume flow. The clamp-on transducer with a high quality PEI sensor can be easily connected outside the pipe during flow operation without interruption of the pipe flow. No pipe cutting or adjustment is required. Maintenance is low as there are no moving parts involved in the non-intrusive ultrasonic measuring process.

for portable installation

The Schmierer SEA UFP1.0 portable clamp-on ultrasonic flowmeter is the ideal flow measurement tool for short or long-term monitoring of several flow points, data logging and verification of buit-in flowmeters. 
The transducers are easily set up and can be used for pipe sizes from DN 25 to 5000. The ergonomically designed handheld transmitter comes with a metal protection case against corrosion and a backlit color digital display. The recharchable battery  lasts for 12 hours of continuous operation.

Vane Wheel Gas Flowmeter

For measuring the flow rate and flow velocity in pipes and ducts, flow profiles, aerodynamic research, laminar flow, also at high gas temperatures, landfill gas, exhaust gas, flow rate and flow velocity in flowing waters. Based on a vane wheel rotating at a speed proportional to the flow velocity of the fluid

  • for application in air/gases and water/liquids
  • probe diameter from 15 mm, measuring tube from 9.7 mm
  • Combi probes for flow and temperature
  • working temperatures up to +550 ºC
  • corrosion resistant to aggressive gases – low pressure drop
  • ± directional sensing of flow
  • Profibus
  • for applications in Ex areas

Hydraulic Test Kits

Testkits with pressure gauges, hoses, adapters, test pumps for different hydraulic working systems

Hydraulic Diagnostic Device

Testing and diagnostic works in hydraulic systems. Flow, temperature and pressure display for 2 separate channels.

Calibration Test Kits

digital pressure calibration test kits

digital pressure gauge testkits with pump

temperature testkits

hydraulic and automotive testkits

marine vessels calibration testkits: DNV-GL certified waterproof robust marine cases

Handheld Indicator for force/weight, torque and pressure

Multipurpose high accuracte handheld indicator for very precise measurement of pressure, force and torque in the field as well as reference instrument for calibration, verification and adjustment of pressure, force and torque reading instrument. Setup with set zero-point and span and  5 point linearisation.

Reference Pressure & Force Gauge

Digital Reference Pressure Gauge, scalable conversion to force & weight, perfect for checking pressure gauges at hydraulic presses, up to 2000 bar, 

Torque Meter

Torque bench meter for static measurements, composed of a digital indicator and a strain gauge torque, extremely rugged and compact with a precision better than 0.20%, ideal for the calibration and control of torque wrenches, screwdrivers, direct reading and snap.

Precision Reference Thermometer

very high accuracy

range -150 to 1400°C

as reference for comparison measurements of temperature for calibration purposes


handhelds with probe, or reference RTDs and TCs

Multifunction Calibrators

To measure and simulate temperature, mV, mA, resistance, TCs, RTDs, Loop Calibrators

with datalogging facilities, USB interface, for pressure and temperature, rechargeable batteries

Marine Vessel Calibration Test Kit

The Marine Vessel Calibration Kits are used to perform pressure and temperature tests and calibrations for all types of pressure and temperature instruments.
The waterproof and robust marine case contains a dry block temperature calibrator as well as a complete pressure test set (test pressure source and certified reference device).

Pressure Calibration Test Kit

The Marine Calibration Kits are used to perform pressure and temperature tests and calibrations for all types of pressure and temperature instruments.
The waterproof robust marine case includes a dry block temperature calibrator as well as a complete pressure test set (test pressure source and certified reference device).

Deadweight Tester

Primary standard for pressure

Rigid basements with integrated manual pressure source

Excellent repeatability

Uncertainties mathematical calculable

Mechanical/physical basic principle

Pneumatic models (with ambient air or nitrogen)

Hydraulic models (up to 5,000 bar)

Differential pressure model with real static pressure

Pressure Controller

Automatized generation of pressure and vacuum, high accurate reference included. 

Due to the high accuracy and control stability, the pressure controllers are especially suitable as references for production lines and laboratories, in order to carry out automatic testing and/or calibration of all types of pressure reading instruments.

Digital Handheld Manometer

Handheld measurement devices for pressure, vacuum and differential pressure 

Accurate digital handheld instruments easy operation 

Several models for your choice

Electronic Pressure Calibrators

Pressure reference standard for checking, adjustment and calibration of all kind of pressure reading instruments. 

In addition, documenting process calibrators measure mA and V and save calibration data of units under test. 

Optional data logging functionality and DAKKS certification

Normally, in addition a calibration pressure source is needed (e.g. Pressure Test Pumps or Pressure Comparison Pumps)

Pressure Comparison Test Pumps

Manual generation of test pressure for test, adjustment and calibration purposes. 

Pneumatic hand lever pump (with ambient air), or Hydraulic spindle pump (with water or oil, depending on model). 

Make also high pressure values with very low force. 

Fine pressure adjustment with sensitive volume variator.

Pressure Test Pumps

Portable pressure pumps for generation of pressure and/or vacuum for pressure comparison measurements (pressure calibration) 

Pneumatic models, operated with ambient air

Hydraulic models, operated with oil or water 

Pressure generation up to 1000 bar (14500 psi), vacuum generation up to -0.95 bar (-28 inHg)

Optical Level Sensors

Optical Level Sensors consist of an infrared sensor and an optical receiver. Light from the sensor is broken by reflection from the prismatic surface and sensed by the receiving unit. Light return intensity changes according to air or liquid cover of the prismatic surface. The change is measured, calculated and triggers the switching outlet. It can be mounted from any angle to the tank, horizontal connection is recommended. It requires less maintenance and is not affected by conductivity or consistence of the liquid.


Alcohol, Ether, Water, Acid, Mineral Oil, Lactic Acid

E-Tilt Level Switches

E-TILT sensors are used vertically. They are used to stop the water leakage by commanding the relay outlet to a solenoid valve or to send a warning signal to a siren.

Application Fields:
Conveyor belts, silos, telescopic arms for ship loading

Cable Level Switches – Float Type

Cabled level switches are used for tank, depot, waste water plant level control in the industrial facilities. They operate without any problem in the this environment with its mechanical design and there is not any jam. Neoprene rubber cable is used for resistance against different liquids and in order that it does not crack in the hot-cold ambient.

Application Fields:
Fish ponds, swimming pools, groundwater, waste mater pools,treatment pools, plunger pump applications, residential water tanks,etc… Water, waste water, diesel, fuel oil, glycerine, gas, nitric acid 10%,acetic acid 10%, formaldehyde 40%, lactic acid 10%, hydrochloride 10%,sulphuric acid 30% etc…

Diaphragm Switches

Level control with a membrane is the most economical method in measurement  of  level of  bulk  material  in  the  storage.  It  can  be used in open and non-pressure tanks. The diaphragm switch can check full, empty and loaded situations of powdered, dusty, corny, granular, grained bulk materials in the grain elevator. It is appropriate for using particles with 0,3 and 2,5 t/m³ and up to max. 30 mm.  The Membrane must be in contact with the material.

Working Principle:
As  long  as  material,  which  is  poured  to  the  grain  elevator, accumulates, the  membrane  is  closed.  The material  pushes  membrane back with composed press and mechanism pushes the contact. Contact  gives  audible  alarm  or sends a signal to stop the  filling mechanism of the grain  elevator.  When the material  precipitates and reduces, the contact reverts back. Precision setting is made during assembly by sliding the mechanism.

Vibrating Rod Limit Switch

The Vibrating Rod Limit Switch for solids is a single element tunned mechanical element-type level sensing device. The electronics excites the piezo-electric-crystals inside tuning rod, which makes the rod vibrate at it’s natural resonance frequency in free air. When the material touches the rod, vibration stops as resonance gets disturbed. Amplitudes of vibration are above threshold when the rod is free to vibrate. Amplitudes of vibration, as sensed by the electronics falls below the threshold, Materials presence is thus detected by observing the amplitude of vibration.

Vibrating rod level limit switches are used as a full, empty and demand alarm in containers, hoppers, silos containing bulks and powders of various types. Typical applications: cereals, beans, edible oil process, sugar, animal feed, rice plants, detergents, dye powder, chalk, gypsum, fly-ash, cement, sand, plastic granules, spices, milk powder etc.

Conductivity Switches

Conductivity level switches are used for checking liquid level of tanks and boilers. As it does not have any movable part, it can be used in the critical ambient and in the liquids with solid particle,
low density and high viscosity.

When liquid leved comes to the level of isolated electrode, current passage starts or stops between electrode andliquid. Strengthened this AC current may be assesed with a relay cirruit.

Application Areas
lt is an economic and safe solution for air pressure tank applications, water level control of steam boilers and conductive tanks.

RF Admittance Level Transmitters

RF admittance is a new level control technology developed from capacitive, anti-hanging material, more reliable, more accurate, and more applicable. It is an upgrade of capacitive level technology.

The so-called radio frequency admittance, admittance means the reciprocal of the impedance in electricity, which is composed of resistive components, capacitive components, and inductive components.

And radio frequency is the high frequency radio spectrum, so RF admittance can be understood as using high frequency Radio wave measurement admittance.

Application Areas

The RF level sensor is used in industrial and mining sites and is suitable for liquid, pulp, powder, oil, and solid measurement liquids.

Magnetostrictive Level Transmitters

The Magnetostrictive level trandmitter consists of three parts: probe rod, circuit unit and float. When measuring, the circuit unit generates current pulse and this pulse transmits downward along the magnetostrictive line and thus generates a ring-form magnetic field.On the outside of the probe rod is a float, which moves up and down along the probe rod with the change of the liquid level.The float also generates a magnetic field due to a set of permanent magnetic inside the float. When the current magnetic field meets the float magnetic field, a “twist” pulse, or “return” pulse, is generated. The time difference between the “return” pulse and the current pluse is converted into a pluse signal, which calculates the actual position of the float and measures the liquid level.

Application Areas

Magnetostrictive Level Transmitters are widely used in liquid level measurement fields such as petroleum and chemical industry. They have gradually replaced other traditional sensors and become the best in liquid level measurement.

Ultrasonic Level

The Ultrasonic Level Measurement is mounted on top of the vessel. Under the control of the electronic unit, the probe emits ultrasonic wave pulse to measured medium. The sound wave is reflected by the surface of medium, a part of reflection echo is received by the probe and converted into electrical signal. From the emission of the ultrasonic wave to the new reception, the time is directly proportion to the distance from the probe to the measured medium. The electronic unit detects the time and calculates out the measured distance according to the known sound velocity and obtains the level or volume of the medium.

Non Contact Radar

The Radar Level Meters are excellent devices for no contact level measurement. The microwave
impulses, emitted by the radars antenna, travel at speed of light and a part of their energy, reflected by the surface of the medium to be measured, is received by the same antenna.The period of time (flying time)
between the emission and the arrival of the impulses, is proportional to the existing distance between the antenna and the surface of the medium to be measured.

Displacer for Liquid Level and Interface

The transmitter with displacer is utilising the Archimedes Buoyancy Principle for continuous measurement of

  • level and interface
  • volume and mass
  • specific gravity (SG)

in liquid media. It is independent of pressure, temperature, conductivity, dielectric, foam or vapor. No power supply is needed.
The level measured in this way is transmitted to the display and / or the transmitter by means of a lifting rod and a magnetic coupling.

Applications for mobile and stationary containers.

Float Level Switches – top or sidemounted

Top or sidemounted float level switches are used for measuring and checking level of tank. lt is preferred in food, ship machine, boiler and storage tank applications with its advantages such as resistance to high temperature, long life contact structure, which is operable in each, vertical or horizontal connection.

Microswitch changes direction with the movement, occurring after magnet in float arm, moving by changing liquid level, affects magnet inside body, magnetically optained contact information is assessed by transferring into applications such as pump, solenoid valve etc.

For 2 layer interface applications with two different media the float drops into the upper liquid and is buoyanced accordingly by the lower liquid. The level is detected by a mechanical lever system and a magnetic coupling without contact to the display and / or transmitter.

  • Independent of the pressure, temperature, density (SG), conductivity, dielectric, foam or steam.
  • Float mount designed for use in Ex zone 0.
  • Robust and reliable, PED, stainless steel for medium wetted parts
  • For mobile and stationary tanks
  • No power supply needed for local indicator
  • Opt. min/max limit switch, 4-20 mA transmitter, NAMUR, Ex ia, ATEX

Liquid Level Gauges (Tubular, Transparent, Reflex, Illuminator)

Liquid level gauges are mounted to the tank as a bypass chamber. It works according the law of communicating tubes. The level in the glass tube is identical to the level in the tank and can be monitored directly. 

Tubular Level Gauges are used for observing the fluid level at low temperature & low pressure.A tubular level gauge consists of a glass tube between two shut-off-safety-valves. The valves also serve as process connection via flange, thread or welding end. 

Reflex Level Gauges are used for observing the level of various liquids by using the reflection of light –  for high pressure & high temperature but not for steam measurements.The glass of a Reflex Level Gauge is ground in a way to enable it to refract light like a prism. At the zone of liquid to measure, the light gets almost absorbed. That makes this zone very much darker than the zone of gas. By this contrast the liquid level can be observed clearly. 

Transparent Level Gauges are used for observing the fluid level for high pressure & high temperature applicable for steam measurements.Inside the stand pipe of a Transparent Level Gauge, the liquid column is placed between two glass panels, which enable to see through. This transparency makes observation of the liquid level easily possible. 

The Illuminator option for Liquid Level Gauges is used for observing the fluid level in a dim place or at night.
Complete range of size, single and double section explosion-proof illuminators are made in single and double section styles for transparent and reflex level gauges. Double section illuminators require only one bulb for complete illumination of two gauge sections.


The bypass flow meter operates on the differential-pressure method. A ring with an orifice plate is installed in the pipeline. The orifice plate causes constriction of the flow and effects a drop in pressure. This pressure drop is proportional to the square of the flow rate.

If the pressure tap upstream of the orifice plate is connected by a pipe to that downstream of the orifice plate, a partial flow will flow through that pipe. This partial flow is proportional to the flow rate in the main pipeline.

The partial flow can be turned on and off, as required, by installing two ball valves in the bypass line.

The low-cost device in PVC is frequently used in swimming-pool water technology. The device in PVDF is suitable for the flow measurement of aggressive media, e.g. in water treatment, while the stainless steel type  is mainly used for flow measurement of air and gases. The measuring range extends from 0.02 – 0.16 m3/h to 300 – 1800 m3/h for H20, and from 0.15 m3/h – 1.5 to 1200 – 6000 m3/h for air at STP.

Positive Displacement

Positive Displacement Flowmeters are precise, reliable and rugged instruments for the volumetric flow of clean liquids including Solvents, Alcohols, Fuels, Oils, additives, chemicals, food bases, paints and viscous emulsions in general industrial, petroleum and chemical applications that require high degrees of accuracy and repeatability. They operate on the Positive Displacement principle using a gear technology (oval gear, tri gear, helical gear), or a sliding/rotary vane or bi-rotor alternative. Each rotation of a gear, (or vane) is proportional to a discrete unit of volume, in turn, the speed at which the gears rotate is directly proportional to flowrate. Output sensors (e.g. Reed and Hall Effect sensors) detect the movement of the gears, thus allowing local or remote instruments to display flow total, rate of flow or facilitate batching applications.


Compared to other fluid meter using differential pressure flow meter, the Wedge Tube has a shorter length of straight pipe for upstream & downstream with excellent repeatability and accuracy. Wedge Tube can be manufactured according to end user‘s specification.Compared to other fluid meter using differential pressure flow meter, the Wedge Tube has a shorter length of straight pipe for upstream & downstream with excellent repeatability and accuracy. Wedge Tube can be manufactured according to end user‘s specification.

Intra Automation offers a wide range of Flow Computers, Displays, Transmitters, Switches and Accessories for Flow Calculation, Monitoring and Control.


Cone Flow Meters can be used in a great variety of applications: liquids, gases, steam, slurries, etc. 

– High accuracy (± 0,5 % of the measured value) is achievable
– Wide Turndown Ratio: 10:1
– Minimal in- and outlet requirements, provided by a pipe run.
– Low pressure loss (compared with orifice plates of the same β)
– Self-cleaning (due to the form of the cone behind the flow element a partial vacuum is generated, which avoids         abrasion on the flow element .


Flow Nozzles are an alternative to orifice plates whenever it comes to the measurement of high speed flows.Flow Nozzles are an alternative to orifice plates whenever it comes to the measurement of high speed flows.Its unique design features gives an exceptional strength, allowing a 60% higher flow rate. Compared with the venturi tube, the flow nozzle is cheaper, whereby the pressure recovery is not as high. Similar to venturi tubes, flow nozzles are maintenance free. Used for applications which do not support high pressures and therefore do not allow much pressure loss. Allows flow-measurements of gases, steam, water and condensates.


Whenever pressure loss is an issue, Venturi Tubes are a good alternative to Orifice Assemblies and Flow Nozzles.Venturi tubes are designed and produced on customers request. The significant advantages of venturi tubes are the high pressure recovery and maintenance free design. Used for applications which do not support high pressures and therefore do not allow much pressure loss. Allows flow-measurements of gases, steam, water, condensates and slurries.


Orifice plates are used for flow rate measuring in pipe systems. With orifice plates a pressure drop is created. Orifice plates are used for flow rate measuring in pipe systems. With orifice plates a pressure drop is created.  Based on the value of the pressure drop the flow rate can be calculated. Orifice plates are produced in accordance with ISO 5167. All the above items are available in C.S., SUS, PTFE, PVC, others on request.In combination with differential pressure transmitter Integral Orifices are suitable for measuring fluid of small bore where high accuracy is required. Integrated flow meters reduce welding and installation times as fittings, tubing, valves, adapters and mounting brackets are not needed.

Sight Glasses

Side Glasses are designed to visually monitor volume flows for common/high velocity, flow direction, high temperature or high pressure applications. 
Types: Flapper, Ball, Ringball, Lantern, High Pressure Sight Glasses

Controller, Recorder, Datalogger

Temperature sensor controllers have a universal input suitable for most common thermocouple sensor as well as Pt100. Low or standard 230V power supply can be selected.

Outputs options: alarm – control output – or 4÷20 mA 

Two displays: upper (red) colour presents temperature of process; lower (green) colour presents set temperature.

Compensation and Extension Cables – Plugs and Sockets

Compensation and extension cables for thermocouples are the element of measuring installation connecting thermocouple sensor with measuring device e.g. controller, indicator or temperature recorder. Extension cables are made of the same materials as thermocouples, whereas compensation cables are made of substitute materials with properties similar to thermocouples. Cable insulation are selected according to ambient conditions and operating temperature.

Plugs and socket are components of measuring systems used for connection of temperature sensors with a measuring device such as controller, temperature indicator or recorder. They are also used for connections and extensions measuring lines.

Connection Heads for Temperature Sensors

Connection heads are integral elements of temperature sensors, available also as separate components. They are made primarily of aluminium alloys, but stainless steel, polyamide or noryl heads are also available. A wide range of connection heads allows head selection for a variety of applications: transmitter mounting, digital LCD display, intrinsically safe or flameproof certified types, 2 table glands, etc.

Wireless Transmission

AirGate-Modbus is a wireless multifunctional gateway that allows the transparent and easy insertion of wireless branches into existing wired RS485 networks. The AirGate-Modbus has four operation modes, Modbus Master, multiplexer, USB RS485 converter and simple wireless RS485 extension. A proprietary protocol based on IEEE 802.15.4 facilitates operation in star mode, allowing the connection of several wireless segments to an existing Modbus RS-485 network.

The Transmitter and wireless set allows for wireless temperature measurement at a distance around 3.5 km. The transmitter has the shape of a standard head mounted transmitter, so it can be installed into a standard connection head. It works with most standard thermocouples and resistance sensors. The wireless set is equipped with a 4÷20mA analog output and digital MODBUS RTU, it can work with sixteen transmitters.

Rail or Head mounted Temperature Transmitter

Rail or Head mounted temperature transmitters are applicable to converting resistance or voltage of temperature sensor to standard current signal 4-20 mA, 0-10V, HART protocol

Input parameters:

  • resistance RTD 2, 3 or 4 wire, Pt100, Pt500, Pt1000, Ni100, Ni1000
  • thermocouple: J, K, T, N, E, R, S, B
  • resistance, voltage, current


  • universal transmitter, sensor error correction, intrisically safe, zero point adjustment in full range
  • parameter configuration with USB interface, HART

Thermocouple Sensor

Thermocouples are the most commonly used temperature sensors. Thermocouples are self-powered, (require no excitation current), can operate over a wide and high temperature range, and have fast response times.

Two dissimilar metal wires are joined together forming an electrical junction. The temperature difference of the two dissimilar conductors produces a temperature dependent voltage as a result of the thermo electric effect, (Seebeck effect). The voltage is measured and used to calculate the temperature.

There are different hot junction types: insulated hot junction (SO), grounded hot junction (SP), one hot Junction for 2 TC insulated from the sheath (SOA), hot junctions insulated from each other and from the sheath (SOB).

Thermocouples have a built in electronic cold junction compensation to correct the missing thermoelectric voltage due to the fact that the thermocouple cold end at the instrument is not at 0°C.

There are several types of thermocouples made from different materials for different temperature ranges and different sensitivities. The most commonly used is the K type. Here a list of the common types of thermocouples:

Industrial Temperature Devices

Industrial Temperature Measuring Devices describe probes with

  • one (or more) temperature sensor elements (usually RTD or Thermocouple)
  • a connection head (head sensors) or plugs, surface magnets/clips (cable sensors for machinery or surface measurement)
  • a protection tube or Thermowell

Sensor elements (inserts) are available as replaceable or non-replaceable types. They include the sensing wires, insulation materials and a shaft. Mineral insulated inserts are bendable and protect against vibrations, ceramic types are used for high temperatures.

Head sensors include the sensing elements which is connected to connection heads or head mounting transmitters (A). They can be fitted to the pipe or to extension tubes (Thermowells) by flange, threaded or with a clamp on (for hygienic aplications).

Cable sensors are used for

  • movable or replaceable parts of machines and devices, (compressor, turbine,…)
  • outer surface measurement of devices and machines, especially their bodies, blocks

The inserts are connected to a head (A), exposed wire ends (B), with sleeves (C), plugs (D) and/or compensation cables (E, F).


designed as miniature valve for remote mounting, (isolation, calibration, purging). 2-Valve manifolds for static pressure, 3-Valve manifolds for DP pressure applications.

Gauge Cocks

to prevent media contamination or lubricant wash out for hydraulic machines, compressors, clean air, gases, non-crystallizing liquids, optionally with air vent hole

Needle Valves

used for instrument line throttling or bubble tight complete instrument shut off, instrument isolation, draining valve for high pressure instrument lines

Pulsation Dampener

to protect pressure instruments from sudden pressure changes and fluctuations

Overload Protector

to protect from over pressure exceeding the specified pressure range by sudden & excessive pressure surges or spikes


to protect instruments from direct contact with high temperature process fluids or vapors filled with condensation fluids

Cooling Tower

to protect instruments from direct contact with high temperature process fluids or vapors filled with condensation fluids

IDTG100 Intelligent Pressure Calibrator

High accuracy, (±0.025% FS) – 5 digit LCD backlight display

Pressure Calibrator for pressure transmitters/switches, etc. to measure pipe readings directly as well as real time display pressure from the units to test. Long term precise pressure readings with inbuilt temperature compensation, SS metal enclosure. Suitable for air, oil, distilled or pure water. Operation with a Ni-H rechargable battery with overload and circuit protection.

Diaphragm Seals

Diaphragm seals, also named Chemical seals, will be used for pressure measuring applications where the instruments shall be protected against the process medium. Seals can be mounted to Bourdon Tube gauges, pressure switches and transmitters / differential pressure transmitters.

The pressure will be transmitted without any time delay from the highly flexible and sensitive seal membrane to the measuring instrument using a transmission fluid.

Seals can be mounted to bourdon tube gauges, pressure switches and transmitters / Differential Pressure transmitters.

Schmierer-Seals are manufactured under highest quality standards with selected materials and coatings, (elastomers, rubbers, high grading stainless steels, Hastelloy, Monel, Inconel, Tantalum, Titanium) for customer specific requirements on process media, pressure, temperature and mounting positions. The connecting part can be made or protected with suitable material, i.e. SS 316L, PP, PVC, PVDF etc. They will run through several test cycles on tightness and shape of the surface.

A repair service for seal systems is part of our standard program; our wide range of different seal types and sizes allows us to do repairs also within short time frames. We can help you to save costs and downturn times and save valuable resources at the same time.

Pointer Dampening With Manodamp® Movements

MANODAMP® Gauges have significant advantages to the “classical” liquid-filled gauge cases:

  • No oil leakage problem – no contamination risk of process media
  • No blurry gauge glass window in hot and humid climates
  • No oil refilling maintenance required
  • Easy maintenance for needle zero readjustment or change of movement parts
  • Longer service life of gauges in rough environments
  • Modern up to date construction fulfills the technical and hygienic requirements of chemical, petrochemical, food and pharmaceutical industries
  • Experience with successful long service life in customer plants

We can deliver pointer dampening with Manodamp® movements in Schmierer Bourdon Tube and Diaphragm pressure gauges with 100 mm or 160 mm diameter with a pressure above 2.5 bar.

Sru 25 Fully Stainless Steel Pressure Gauges

Fully Stainless Steel Pressure Gauges:

  • Silicon Jelly Stabilizer Movement SS304
    no glycerine oil filling or maintenance required, no risk of contamination
  • Rugged Construction:
    • Seamless Tube Bourdon, Socket SS316L – NACE MR 0175
    • White Aluminium Dial – zero-adjustable
    • Safety Glass
    • Case SS304, NBR Gasket. IP 66 protected
    • Temperature compensated Neopren Rubber Blow Out Disc
    • TIG welding – TÜV
  • Quality Control: Helium Leak tested
  • Dual display bar/psi
  • Laser printed serial number for clear identification and warranty tracking

Sru 25x Fully Ss Pressure Gauge With Diaphragm Seal

Fully Stainless Steel Pressure Gauge SRU 25 connected to Diaphragm Heavy Duty Miniseal AISI SS316 1/2″ connection for corrosive, viscous, sedimentous media and/or with a high temperature, up to 400 bar and -40 to 200°C
(Also available as 1/4″ connection up to 200 bar for 2.5″ Pressure Gauges)

Bourdon Tube Pressure Gauges

An elastic (circled) measuring element (Bourdon tube) will be soldered or welded into a socket; the free end being firmly closed. A change in pressure causes the measuring element into a deflection. This deflection of the free end of the Bourdon tube is proportional to the applied pressure and will be transmitted to a rotary geared movement. This movement carries a pointer and indicates the pressure on a dial with 270° angle. An elastic (circled) measuring element (Bourdon tube) will be soldered or welded into a socket; the free end being firmly closed. A change in pressure causes the measuring element into a deflection. This deflection of the free end of the Bourdon tube is proportional to the applied pressure and will be transmitted to a rotary geared movement. This movement carries a pointer and indicates the pressure on a dial with 270° angle. Bourdon tube gauges are used for the measurement of high pressure up to 1000 bar and vacuum to -1 bar of gases, steam and fluids. The case size ranges from 40 mm to 1000 mm. Manodamp® axle damping movement is available for cases with 100 mm and 160 mm.
The accuracy is between ± 0,1% and ± 2,5% of full scale deflection. The bourdon tube can be made of brass, stainless steel or monel in case of aggressive medium.
The ambient temperature shall be -40…+60°C; the medium temperature not higher than +60°C using brass connection and +200°C using “UNI” type gauges made of stainless steel.

Diaphragm Pressure Gauges

A thin, concentrically corrugated diaphragm will be fixed between two flanges. The diaphragm will be loaded with the process pressure on one side and elastically deflects from its normal position. This way is proportional to the applied pressure and will be transmitted to a rotary geared movement. The movement carries a pointer and indicates the pressure on a dial with 270 angle. 

Diaphragm pressure gauges are used for the measurement of pressure up to 40 bar and vacuum to -1 bar of gases, steam and fluids. Accuracy is ± 1,6% of full scale deflection. Case size from 100 mm to 250 mm diameter. The diaphragm can be protected against aggressive medium using foils made of Tantalum, Hastelloy C etc. or PTFE-coating. The connecting part can be made or protected with suitable material, i.e. SS 316L, PP, PVC, PVDF etc. Diaphragm pressure gauges with open measuring flange are perfectly suited for high viscous, crystallizing and solid matter containing medium in Industries like Palm Oil or Cooking Oil. Diaphragm pressure gauges can be easily supplied with an overload safety. 

The ambient temperature shall be -20…+60°C; the medium temperature not higher than +100°C.

Capsule Pressure Gauges

The capsule consists of two thin, concentrically corrugated diaphragms welded or soldered together. Pressure change in the capsule causes an elastic deformation on both sides of the measuring element. The travel of the measuring element is proportional to the measured pressure. It will be transmitted to a pointer using a geared movement and indicated on a dial with 270° angle.

Capsule pressure gauges are used for the measurement of low positive or negative values up to 600 mbar. Accuracy is ± 1,6% of full scale deflection. The capsule is made of brass or SS316 and used for measuring gases only. The ambient temperature shall be -20…+60°C; the medium temperature not to be higher than +100°C.

Differential Pressure Gauges

A pressure chamber will be separated by a thin diaphragm. This diaphragm is under static pressure from both chambers and additionally from one chamber with the measuring pressure. The diaphragm will transmit the pressure difference through a bellow onto the movement. The movement indicates the positive or negative value on a dial with 270° angle. A bellow on the opposite side compensates the power. 

DP Gauges are available from 0-1 bar to 0-25 bar with cases in 100 mm and 160 mm. They are made of stainless steel with standard connections of ½” BSP. 

Differential pressure gauges are used for the measurement of gases and fluids; these can also be aggressive.Accuracy is ± 1,6% of full scale deflection. The ambient temperature shall be -20…+60°C; the medium temperature not higher than +100°C.


The measuring principle of a  Pitot Tube is based on the theory of differential pressure. A simple, though effective measurement method, combining low installation and operation cost with great reliability, for Gas, Liquid and Steam Flow monitoring.The measuring principle of a  Pitot Tube is based on the theory of differential pressure. A simple, though effective measurement method, combining low installation and operation cost with great reliability, for Gas, Liquid and Steam Flow monitoring.Itabar Steam Flow Sensors are designed to operate in environments with temperatures up to 650°C and 400 bar pressure. Itabar Liquid and Gas Flow Sensors are designed to operate in environments with temperatures up to 1175°C and 400 bar pressure. The process connection can be threaded or flanged. Intra Automation offers the choice of different sensors, depending on line size and flow. The WinFlow calculation software is applied in the determination of the sensor size.

Magnetic Level Gauges and Transmitters

Magnetic level indicators offers a reliable, accident-free and maintenance-free usage through a simple and break-resistant construction at a maximum process pressure of 320 bar and a temperature range from -50 °C through 400 °C to display the filling level of a tank. They have 3 basic parts: the chamber/tube, float and indicator. The fluid level is indicated directly with a separation of the measurement and indication area. The magnetic transfer of the fluid level from the tank to the indicator is continuous and vibration- resistant, even in the case of fast changing levels. 

  • Continuous magnetic transmission of the liquid level from the vessel to the gauge
  • Resistant to vibration
  • Level measurement for atmospheric and pressurized vessels, (liquid contained in pressure tight housing)
  • Perfect readability of the display even at greater distances and after several years
  • Simple, unbreakable and no-maintenance design
  • Suitable for corrosive, toxic or flammable media with separation of measurement and display compartments
  • Great reliability even at high temperatures and pressures
  • Alarm contacts can be attached at any point along the gauge
  • Optonal level control with switch contacts and/or analogue signal, (4…20 mA Hart/Profibus PA/Fieldbus)
  • Customized measuring scale for volume or height
  • explosion proof versions available
  • Floats without gas-preload as of a minimum density of 0,35 kg/dm³
  • No auxiliar power required

Capacitance Switches and Transmitters

Capacitance level instruments have a capacitive level sensor for level measurement of conductive liquid, low conductive liquid, granulated materials with solid particles, adhesive and acid/basic liquids. When a material comes between electrode rod and tank wall, a capacitance change occurs and when this change exceed adjustment threshold, contact output is delivered. Full-empty calibration can be performed easily and safely. Different designs and different solution related to industrial levelmeasurement are offered especially for machinery manufacturers.

Application Areas

Liquid tanks, food machines, cooling liquid tanks, shipping, glycol tanks, brine, waste water tanks. Oil tanks, CO2 liquid tanks, high temperature tanks, non-conductive liquids. Grain stores, cement, sand feed, flour, milk powder, organic and plastic granule. Sticky hot and high viscosity liquid, acid and chemical liquids.

Guided Wave Radar

Guided wave radar (‘radar on a rope’) transmitters are used for reliable product level monitoring. This level measurement technology is not impacted by dust, vacuum, humidity, foam, pressure changes, dielectric and temperature.

The GWR is installed on top of the tank.  A probe or cable is lowered into the vessel from the top and continuously measures the level of the product as it makes contact along its length. A microwave signal is transmitted from top to bottom and reflected back. The distance is calculated by the speed of light and the time delay.

Different probes are used for a variety of applications:

  • coaxial probes for liquids with low dielectric constants
  • single element probes for viscous products
  • twin element probes for long measurement

Interface measurement is possible if the 2 media have different dielectric constants.

GWRs are also used as combo units with Magnetic level gauges for all kinds of liquids in vessels and tanks to have a backup for power cuts or in the power start up process.

Float Level Transmitter

When magnetic field of magnet within the buoy moving along tube according to liquid level comes up to the reed sensor, it opens or closes the electric circuit. Continuous type serial aligned resistance and reed relays are engaged and disengaged. Such changes of reed sensors and alarm or level information can be assessed through a relay circuit or control device.
Precision of reed sensor increases according to lowness of its placement range. It is preferred by the users due to the advantages of providing analogue output within the housing. Furthermore, it is possible to follow and to control the process in the field through indicator.

Rotary Paddle Level Switch

Rotary Paddle level switches are used for level control of solids in silos and tanks where materials with solid particles are stored.Full and empty signals can be received by performing level control in many demanding applications with different probe and pedal varieties in a safe manner. They can be connected horizontally and vertically.

Mini Switches

Mini Level Switches are economic and easy to install devices with minimal space requirements. They are used for level measurement in machines, tanks, boilers, etc. for both liquids and gases.

The Switches can be made by Plastic (PP, PVDF, PBT, Delrin) or stainless steel.

Working Principle:

When the magnetic field in the float is aligned with the reed sensor in the tube it opens or closes the electric ciruit. When the float moves away, the sensor reverts back.

Contact Devices

Contact pressure gauges are used to monitor critical limit values, trigger alarms and start, stop or switch processes by opening, closing or changing over a circuit.

They are used for cases starting at 100 mm diameter. The contacts are built in single-, double and triple versions. Installation will be below the ring dials. The nominal values can be set from outside covering full scale. Switching direction is clockwise.The installation of a contact device needs a junction box and bayonet lock bezel/bayonet lock case or push-fit bezel.

We offer different types of contacts:

Model BYC stainless steel

Fully Stainless Steel Pressure Gauges (Bourdon Beryllium copper, Socket SS316L, Case & Bezel SS304), rugged construction with EPDM Blowback, Safety glass.

Phenolic Case Gauges

Pressure Gauge with stainless steel SS316L Bourdon, Socket, SS304 Movement, Tig Argon arc welded joints, Phenol Case, Phenol Blow off disc, Neopren Gasket, Shatterproof safety glass, fillable, dual display bar/psi

DTG100 Digital Pressure Gauge

Standard Digital Pressure Gauge
(±0.5% and ±0.1% FS)

High Precision Test Pressure Gauge

(±0.05% FS)

5 digit LCD backlight display, long term precise pressure readings with inbuilt temperature compensation, zero point calibration, overload alarm, light weight Alu Alloy cover, SS bottom connection, CE & EX approval, 2 year operation with dry cell Lithium batteries.

Thermowell Protection Tubes

A thermowell is a pressure tight tube which protects a temperature sensing element, (RTD, TC or other sensors) from corrosion, high presure or high velocity of the process media. The tube can be welded, flanged, threaded or clamped (sanitary) to a vessel or pipe.It allows the sensing element to be removed for service or repair without closing down the process line.

Quality thermowells are machined from drilled barstock (stainless steel material) to ensure a good sensor fit. Teflon, Alumina or ceramic materials are used for special high temperature or corrosive applications. A spring loaded temperature sensor ensures metal to metal contact with the tube. Tapered or stepped shapes of the tube improve the response time.

Mathematical Wake Frequency Calculations ensure that the thermowell design is robust enough to withstand the various stresses and strains produced by the process media, (turbulences/wakes, temperature, etc.) to avoid that the process media wake frequencies coincide with the tube frequencies which would lead to cracks and destruction.

We provide wake frequency calculation and can offer fully explosion proof solutions for the complete units (housing, sensors and protection tubes).

RTD Sensor

An RTD is a temperature sensor to measure temperature using the principle that the resistance of a metal changes with increasing or decreasing temperature. They required an electrical current (exitation current) which is transmitted through a piece of metal, called the RTD element or resistor. RTDs have a near linear response to temperature changes, they are stable and accurate and give repeatable responses.

Most RTD elements consist of a length of fine coiled wire (most commonly Platinum, Nickel or Copper)
wrapped around a ceramic or glass core. The element is usually quite fragile, so it is often placed inside a sheathed probe to protect it.

RTDs are available in 2, 3 and 4 wire configuration. (2 wire for short lead length,  3 wire (most commonly used) adds a line for the exication current to cancel the wire resistance effect, 4 wire config for highest accuracy)

The PT100 probe (el. resistance of 100.00 Ohm at 0°C) is most commonly used in industrial applications. PT500 (500 Ohm at 0°C) and PT1000 (1000 Ohm at 0°C) probes are available.

Machinery Thermometers

The measuring principle is based on the volumetric temperature expansion of the filling liquid in the glass tube. The expansion of the filling liquid is indicated on a scale. Machinery- glassthermometers are used for temperatures from -60°C up to +600°C.Accuracy is ± 1,6% of full scale deflection.

STU 01 Industrial Gas Filled Thermometer

Inert gas filled expansion system, SS Case & Stem, EN 13190 Standard, Instrument Glass, Neopren Rubber Gasket, fillable, opt. with Thermowell, bottom, lower back, every angle entry, adjustable. View Products

  • Dial Size:  

4″ (100mm)
5″ (125mm)
6″ (150mm)
8″ (200mm)
10″ (250mm)

  • Connection:

3/8″ BSP, 1/2″ BSP
1/2″ NPT

  • Range:

0 to 100°C

  • Stem Diameter: 

6mm, 6.5mm, 8mm, 9.5mm, 10mm, 12mm

  • Stem length: 

100mm, 120mm, 130 mm

  • Capillary Length: 

1m, 1.5m, 2m

STU 02 Industrial Bimetallic Thermometer

SS Case & Stem, EN 13190 Standard, Sheet Glass, Neopren Rubber Gasket, fillable, opt. with Thermowell, bottom – back – every angle entry, adjustable.

  • Dial Size:  

4″ (100mm)
5″ (125mm)
6″ (150mm)

  • Connection:

3/8″ BSP, 1/2″ BSP, 3/4″ BSP, 1″ BSP
1/2″ NPT, 3/4″ NPT, 1″ NPT

  • Range:

-20 to 500°C

  • Stem Diameter: 

6mm, 6.35mm, 8mm, 9.5mm, 10mm, 12mm

  • Stem length: 


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