Gas expansion temperature switch F TR

capillarystainless steelexplosion-proof

Version: direct bulb or capillary Case: Zamak Sensing element: Stainless steel or copper bulb and capillary Capillary protection: Stainless steel armour or PVC coated Dielectric strength: » 2000 V between open contacts (common mode) » 2000 V between contacts and ground (differential mode) Electric choc: 5000V (1.2/50 µs) Features: » Stainless steel fastening » Electric output: stainless steel cable gland » Reinforced fixing bracket - Navy type » Respirator protected Options: » Explosion-proof housing » Electrical connection: SAIB connector plug » Scale window » Dielectric insulation of thermostatic element » GOST certificate » VERITAS certificate The temperature is applied to a remote mount "vapour pressure" sensing element. The temperature converted into pressure is transmitted by a sealed circuit to a metal bellows "SE". The temperature switch thus behaves like a bellows pressure switch. The variation in bellows pressure caused by the temperature changes acts on the internal mechanism based on a balanced system of opposing forces (main spring "MS" and sensing element "SE") located on either side of a flexible arm "FA". The theoretical articulation axis of the flexible arm "FA" comprises a stainless steel strip that provides constant support for the arm The force thus produced is balanced by the "MS" range spring enabling the set point to be adjusted using the "SP" screw. After the set point is exceeded, the movement of the flexible arm is detected by the switch "SW" used at the end of travel.