Products Catalog

TT420 temperature sensors are used to monitor temperature on a wide range of industrial machinery including liquid  tanks, piping, conveyors, bucket elevators, motors, gearboxes, pumps, turbines, fans, curing ovens, centrifuges, agitators, hammermills, and more.

TT420 temperature sensors combine a sensor, signal conditioner and 2-wire loop-powered 4-20 mA transmitter into a rugged 
and compact package. All models are compatible with standard 2-wire 4-20 mA current loops and analog inputs and are identical with the exception of the measurement probes and fittings.

Features:
• 2-wire, loop-powered 4-20 mA analog output
• Attachment probe, sensor, and 2-wire 4-20 mA signal conditioner in one
• No user calibration: works right out of the box
• Compatible with PLCs, meters, and data acquisition systems
• Reverse-wiring protected
• UL listed, Intrinsically Safe (IS) Class I, Div I (C, D) and Class II, Div I (E, F, G)

3 Models:
• TT420F -  flat surface mount-  mounts onto any flat surface with a #10 machine screw (included)
• TT420S -  1/4-28 threaded stud- screws into any 1/4-28  tap
• TT420Z* -  1/4 in stainless steel probe -  often used with compression fitting mount (tanks, piping, bearing zerk grease fittings)

*Available with or without compression fitting adapters

Features:
• 2-wire, loop-powered 4-20 mA analog output
• Attachment probe, sensor, 2-wire 4-20 mA signal conditioner and conduit fitting in one
• No user calibration: works right out of the box
• Compatible with PLCs, meters, data acquisition, and hazard monitoring systems
• Reverse-wiring protected
• Integral 1/2 in flexible liquid-tight conduit fittings
• Optimized for Class II area hazard monitor systems (e.g. grain, coal dust)
• FM approved, Dust Ignition-proof. Class II and III, Div I (E, F, G); NEMA 4

TT420-LT probes and fittings are optimized for shaft bearing (TT420Z-LT), belt rub-block (TT420S-LT) and other temperature measurement applications. All models have integral liquid/dust-tight conduit fittings allowing complete sensor and cable segregation and protection.

2 Models:
• TT420S-LT* -  3/8 - 16 threaded stud probe (e.g. belt-alignment rub block temperature)
• TT420Z-LT* -  1/4  in stainless steel probe with 1/8 NPT adapter (e.g. zerk grease fitting for bearing temperature)

*Probe and cable length, straight and right-angle options are available. A lug-mount adapter is available for TT420S-LT.

*Optional Magnet Mount Adapter for TT420S-LT