Temperature sensors include a built-in conduit adapter and grease-fitting (zerk) tap
FM-approved temperature sensors from Electro-Sensors, now include a built-in conduit adapter and grease-fitting (zerk) tap. TT420-LT (Liquid Tight) temperature sensors combine a sensor, signal conditioner, and loop-powered 4-20 mA transmitter into a rugged and compact package. With the addition of an integrated conduit fitting, the 1/2-in. TT420Z-LT and TT420S-LT models are now compatible with a wider variety of sensing applications. Plus, all models arrive ready to use, with no user calibration required.
All TT420-LT models are compatible with standard 2-wire 4-20 mA current loops and analog inputs. Models vary only in their measurement probes and fittings, which are optimized for applications including grain handling facility shaft bearing (TT420Z-LT) and belt rub-block (TT420S-LT) temperature measurement. All models feature an integrated fitting for 1/2-in. flexible liquid-tight conduit and are FM approved as dust ignition-proof for use in Class II and III, Ev. 1 and 2, Group E, F, G ratings, when installed using Class II rated (1/2 in.) flexible liquid-tight conduit.
The TT420Z-LT is compatible with 1/8-, 1/4-, and 1/2-in. NPT grease fitting zerk taps. The TT420S-LT additionally screws into a brass rub-block with a 3/8-16 tap and is available with the option of a lug mount adapter, supporting a wide variety of mounting possibilities.
Applications include conveyors, bucket elevators, motors, gearboxes, pumps, turbines, fans, and more.
– Edited by Renee R. Bassett for Control Engineering, www.controleng.com