SDB501 Temperature Swichgage (10701041)

SDB501: Direct Mounting Temperature Swichgage for exhaust gas temperature; 100-500°F. (10701041)

The SDB501 is a Direct Mounting Temperature Swichgage used to monitor gas compressor temperatures or engine exhaust temperatures. It is an accurate direct-reading gauge with an adjustable limit switch to activate alarms and/or shutdown.

A knob on the front of the Swichgage allows you to adjust the limit switch trip point. Pointer movement is actuated by a bi-metallic sensing element. When the indicating pointer on the SDB501 touches the adjustable contact, a one-wire-to-ground circuit is completed to shut down the equipment and/or actuate audible or visible alarms.

Proper relays or Tattletale annunciators (magnetic switches) must be incorporated into the system.

The SDB501 has a die-cast aluminium case with a high-torque bi-metal sensing element in heliarc welded stainless steel bulb. This dual-scale instrument has a temperature range of 100-500ÀF (40-260ÀC), with a maximum unit temperature of 625ÀF (329ÀC). Use of a thermowell is recommended.

Murphy offers thermowells (separable sockets) to facilitate maintenance of a temperature Swichgage and to protect the temperature sensing bulb from extreme amounts of system pressure. Two thermowell options are available: 1/2 NPT and 3/4 NPT.