Flow Switches

Thermal Instrument is the leading Flow Switches Manufacturer in India providing reliable solutions for accurate pressure measurement to process industry worldwide.

Thermal Instrument has designed flow switches for the direct control of fluid flow in pipelines and ducts. These switches are magnetically or mechanically actuated. This is simple, reliable and economical solution to control or monitor flow in process lines.

Thermal Instrument offers two types of Flow Switches:

• Inline Type
• Top Mounted

This is direct mounted type flow switch in pipe line. This consists of Switch assembly, Body, Bellows and Flapper. This is mounted in horizontal position. Flapper is connected to bellow assembly. When flow reaches beyond set flow the flapper moves in the direction of flow. The displacement of flapper causes actuation of the microswitch through bellow assembly. Inline type flow switch is available upto 50 NB line size and above 50 NB Top mounted is recommended. There are no vertical moving parts and is therefore maintenance free. These flow switches can be mounted in horizontal as well as vertical lines.

Tests:

• PMI Test Bench
• Hydro Test bench Meeting shell Test
• Calibration
• Helium leak Test on Contract
• Radiography Test on Contract
• IBR testing and compatibility

Specifications :

• Type : Flapper type
• Mounting Orientation : Side Mounted / Top Mounted
• Body : CS, SS 304, SS 304L, SS 316, SS 316L Other on request
• Flappers : SS 304, SS 304L, SS 316, SS 316L Other on request
• Bellows : Phosphorous Bronze
• Switch Type : Snap Acting 1 SPDT / 2 SPDT Microswitch, 5A, 230 VAC
• Switch Housing : Die Cast Aluminium Weatherproof to IP – 65 Die Cast Aluminium Explosion proof suitable for Group IIA, IIB Die Cast Aluminium Explosion proof suitable for Group IIC
• Electrical Connection : ¾”ET(F)
• Process Connection : Inline : Flanged / Screwed – upto 2″
• Top Mounted : Flanged / Screwed – 1¼” and above
• Max Operating Pressure : 10 Kg/cm
• Max Operating Temperature : 80 C