OMEGA’s TSW series adjustable temperature switch is perfect for applications which require an economical solution to temperature control. The stainless steel stem of the TSW series switch is sealed and filled with a gas that expands as process temperature rises. A membrane within the switch body mechanically causes closure of a 5 Amp form C relay.

The 9.7 mm (0.38") diameter of the probe is designed to mate with OMEGA’s standard 385 series thermowells for your most rugged applications. See Section B of the OMEGA Complete Temperature Measurement and Control Handbook and Encyclopedia^® for thermowell selection.

Part Number	Temperature Range	Contact Rating Amps	Repeatability °C/°F
TSW-11	-45 to -5°C (-49 to 23°F )	1	±.7 (1.3)
TSW-15	-45 to -5°C (-49 to 23°F)	5	±.7 (1.3)
TSW-21	-25 to 20°C (-13 to 63°F)	1	±.9 (1.6)
TSW-25	-25 to 20°C (-13 to 63°F)	5	±.9 (1.6)
TSW-31	-5 to 35°C(23 to 95°F)	1	±.8 (1.4)
TSW-35	-5 to 35°C (23 to 95°F)	5	±.8 (1.4)
TSW-41	25 to 70°C (77 to 158°F)	1	±.9 (1.6)
TSW-45	25 to 70°C (77 to 158°F)	5	±.9 (1.6)
TSW-51	55 to 105°C (131 to 221F)	1	±1.0 (1.8)
TSW-55	55 to 105°C(131 to 221°F)	5	±1.0 (1.8)
TSW-61	80 to 125°C (176 to 257°F)	1	±.9 (1.6)
TSW-65	80 to 125°C(176 to 257°F)	5	±.9 (1.6)
TSW-71	115 to 175°C(239 to 347°F)	1	±1.2 (2.2)
TSW-75	115 to 175°C (239 to 347°F)	5	±1.3 (2.3)
TSW-81	175 to 230°C (347 to 456°F)	1	±1.2 (2.1)
TSW-85	175 to 230°C (347 to 456°F)	5	±1.2 (2.1)
TSW-91	200 to 265°C (392 to 509°F)	1	±1.3 (2.4)
TSW-95	200 to 265°C (392 to 509°F )	5	±1.3 (2.4)

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Adjustable Temperature Switches