FW Murphy SDB500 Temperature Swichgage

FW Murphy SDB500 Temperature Swichgage. Range: 100-500F. 1/2" NPTF Process Connection. 304 stainless steel, 1/2" diameter x 4" insertion depth. Thermowells are recommended for use with this product. They are sold separately. The SDB Series are direct-mounting temperature Swichgage devices. They provide an accurate direct-reading gauge with an adjustable limit switch to activate alarms and/or shutdown. A knob on front of the Swichgage instrument allows you to adjust the limit switch trip point. Pointer movement is actuated by a bi-metallic sensing element.