Conax Technologies 2-Wire Programmable Head Mount Universal Transmitter (ATEX, CSA/FM) 5331D

The 5331D is a two-wire programmable transmitter for RTD, thermocouple, resistance, or mV inputs, converting signals to a 4...20 mA output. It has a DIN Form B housing measuring Ø44 × 20.2 mm and is mounted with two M4 screws on a 33 mm bolt circle. It features 1.5 kVAC galvanic isolation, supports 2-, 3-, and 4-wire RTD configurations with cable compensation, and operates from 7.2 to 30 VDC. The device complies with ATEX 94/9/EC and CSA/FM standards for hazardous locations, including zones 0, 1, 2, 20, 21, and 22, with intrinsic safety certification for Ex ia IIC T6/T4. Input ranges include Pt100, Ni100, and multiple thermocouples per IEC, DIN, and ASTM standards. Output load resistance is limited by (supply voltage − 7.2)/0.023 Ω. It meets EMC standard EN 61326-1 and has IP68 enclosure protection with a maximum ambient temperature of 85°C for T1-T4 or 60°C for T5-T6.