Mechanical Temperature Switches - Barksdale - #3

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Specifications are subject to changes without notice. 11 / 05 KTM-US 923-0876 01/1 Conventional switch Barksdale switch Set point Ambient temperature in °C Set point variationdue to ambient change in °C +3,9 +3,3 +2,7 +2,2 +1,6 +1,1 +0,5 0 -1,5 -1,1 -1,6 -2,2 -2,7 -3,3 -3,9 -4,4 -51 -34 -18 -1 +16 +32 +49 +65 3 Mechanical Temperature Switches Ambient Temperature Compensation and switching accuracy Barksdale Temperature Switches incorporate a compensating device to cancel out the adverse effects of ambient fluctuation. Curves reflect averages of a series of tests. Results of specific conditions are available on request. Barksdale switches are designed for ±1/2 percent accurate response through the mid 60% of the adjustable range (±2% at min. or max. adjustable set point). Example: In conventional switches an ambient temperature fluctuation between -50 °C and +75 °C produces a swing of 10 degrees or more - in Barksdale switches extreme fluctuation of ambient may result in a 2 to 3 degrees swing. Description Cable gland (provided) Weatherproof protection cap, tamperproof SeIf-locking adjustment, field-adjustable with calibrated dial (same dial for °C and °F) Hidden mounting screws (no protruding lugs) Housing and sensor to mount in any position Submersible in pressurized vessel (pressure range up to 21 bar) Wide range of media and temperalure limits (liquid filled remote sensor) Standard or custom length armoured capillaries available Single or dual switch with weatherproof housing or explosion proof enclosures acc. to ULand CSAspecifications Grounding screw Terminal strip labeled ‘C’, ‘NO’ and ‘NC’ SPDT switch Optional adjustable differential Overload protection Amblent temperature compensation - bimetal discs 1,8 m, 3,6 m or 7,5 m stainless steel or copper capillary standard or custom lengths to suit Remote sensor and capillary type Local mount type Outside liquid fill Introduction Pressure - Temperature limit see „Accessories“ page 16