Thermal dispersion flow switch TG1 series
for liquidsinsertionin-line

thermal dispersion flow switch
thermal dispersion flow switch
thermal dispersion flow switch
thermal dispersion flow switch
thermal dispersion flow switch
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Characteristics

Technology
thermal dispersion
Fluid
for liquids
Other characteristics
in-line, insertion, intrinsically safe
Applications
process

Description

Thermatel® TG1/TG2 provides a two-wire, intrinsically safe circuit between the probe and remote din rail enclosure. The flow/level/interface switches provide a new level of performance and reliability not found in previous switches. Continuous diagnostics with fault indication, narrow hysteresis and fast response time make the TG1/TG2 the latest in thermal dispersion switch technology. The thermal switches are based on convective heat transfer. One sensor is at the process temperature and the other is being heated by a constant power. As the flow rate increases, the temperature difference between the sensors decreases. A set point is established so when that specific temperature difference is reached the relay changes state. This can be on either increasing or decreasing flow or flow/no flow. When used in a level or interface application it is primarily the thermal conductivity of the fluid that will provide the difference in heat transfer. Easy field calibration - pre-calibration fro factory on request Variable flow or flow / no flow detection of gases and liquids Excellent low flow sensitivity Continuous diagnostics detect sensor fault mA output provides repeatable indication of flow rate and fault detection OPTIONS Low flow body for very low flow rate detection Hygienic design NACE construction

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