ABB 3BDH000741R1 CTI 21-P EX｜Temperature Input Module｜

3BDH000741R1 CTI 21-P EX

IO channel specifications
8-way fully isolated intrinsic safety analog input, single channel independent electrical isolation, isolation withstand voltage ≥ 500VAC
Compatible with multiple types of on-site sensing signals:
Thermal resistance: PT100/Ni100 (RTD temperature acquisition)
Thermocouple: K/S/B/J/T type millivolt TC signal
Standard industrial signals: 0~5V, 0~10V, 4~20mA, resistance signal
Measurement accuracy: Voltage/current ± 0.1% FS, temperature measurement ± 0.2% FS, hardware filtering to resist power frequency interference
Intrinsic safety characteristics: Explosion proof and energy limiting circuit, can be directly connected to explosion-proof field instruments in Zone 1 of chemical/petrochemical hazards, without the need for external safety barriers

Communication and hardware functions
Backplane bus: AC800H dedicated backplane bus, interacts with CPU main unit data; Onboard fault self check, channel disconnection diagnosis, fault code upload system
Onboard status LED: power light+8-channel signal indicator light, quick on-site troubleshooting for wire breakage/short circuit faults

Application Industry
Oil refining, fine chemical, pharmaceutical explosion-proof workshops, oil and gas field stations, temperature/pressure/liquid level instrument signal acquisition in hazardous areas

ABB 3BDH000741R1 CTI 21-P EX｜Temperature Input Module｜