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Item # 800-001571, TT420Z-LT


• 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




10" Probe, 1/2" Conduit


ISO 9001




Temperature Sensors Data Sheet
(PDF, 2494KB)

Machine and Hazard Monitoring Systems
(PDF, 2047KB)