Thermal Flow Sensors

Thermal Flow Sensors use the calorimetric principle and are suited to a wide range of flow monitoring applications. They are easy to install, operate independently of temperature & pressure and provide great long term reliabilty.

Standard Thermal Flow Sensors

These thermodynamic flow controllers without moveable parts, which means they are robust and resistant to soiling. Controllers for fluids such as water, glycol mixtures or chemicals are as much part of the product range as sensors for gases such as air and carbon dioxide. Intrinsically safe sensors based on ATEX for explosive and hazardous areas are also available. Additional variations consist of high temperature sensors up to 160 °C, special sensors made from such materials as Hastelloy, Monel, titanium and tantalum with high resistance to chemicals, and programmable flow sensors with digital displays. The flow controllers are either screwed into the side of the pipe or added to the line itself in the form of inline sensors

The standard one-piece sensors are available in a range of materials including special materials such as Hastelloy, Titanium or even PTFE for use in aggressive media. These flow controllers are highly reliable units for the water industry, automation industry, chemical industry, and wherever flows have to be monitored in a safe, robust and low-maintenance manner.

The flow controllers are either screwed into the side of the pipe or added to the line itself in the form of inline sensors. Different versions are available - either compact flow sensors with integral electronics, or flow sensors with remote amplifiers.

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Function of Thermal Flow Sensors

The function of the Thermal Flow Sensor is based on the thermodynamic principle. The sensor is heated internally a few degrees C compared to the medium into which it projects. When the medium flows, the heat generated in the sensor is conducted away by the medium; i.e. the sensor cools down. The temperature within the sensor is measured and compared to the temperature of the medium. The state of flow can be derived for each medium by the temperature difference attained.

If you would like more information regarding our Thermal Flow Sensors applications then contact us direct today. Call us on 01827 310 666 or fill out our online enquiry form and we'll get back to you. 

 

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Product search

This product search tool allows you to find the most appropriate sensor to suit the application, with selections for medium (liquid, gas, glycol), power supply, flow rate, supply voltage, output type, connection type, temperature range and ATEX category.

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Thermal Flow Sensors for Liquids

Our Thermal Flow Sensors for Liquids are available in either compact form, with the sensor and the electronics combined in one unit, or you chose a separate amplifier and controller.

There are different variantions available with insertion type (both compact with integral electronics as well as 2 part), in line sensors and even ATEX approved sensors.

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Thermal Flow Sensors for Gases

Our Thermal Flow Sensors for Gases are available in either compact form, with the sensor and the electronics combined in one unit, or you chose a separate amplifier and controller. 

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Flow Sensor Catalogue

This Flow Sensor Catalogue details the complete range of Flow Sensors for both liquids and gases and includes information on how to install.

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Product search

This product search tool allows you to find the most appropriate sensor to suit the application, with selections for medium (liquid, gas, glycol), power supply, flow rate, supply voltage, output type, connection type, temperature range and ATEX category.

Read More »

Easy Installation of EGE Flow Controllers

New screw-in adapters enable easy installation of EGE flow control systems: ST 418, SNS, and SCS probes and compact sensors can now be simply plugged in, aligned, and screwed tight. The adapter is screwed into a T-piece or a welding sleeve. During installation, the plug connector and the LED display can be freely oriented. After that, the sensor is secured in the adapter using a union nut. The connection is reliably sealed up to 100 bar. Various screw-in adapter models which are optionally available allow for universal use of the flow sensors. Standard versions are supplied with a G¼ or G½ thread. The sensors operate according to the thermodynamic principle and are suitable for monitoring liquid flow rates up to 300 cm/s.

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