iTHERM ModuLine TM131 is a modular RTD/TC thermometer with intrinsically safe (Ex ia) certification, combining housing, sensor, and process connection into a configurable assembly for general industrial temperature measurement. Size: G1/2" process connection thread, ⌀6 mm (1/4") insert diameter, insertion length up to 4500 mm on request Application: General industrial process temperature measurement in intrinsically safe (Ex ia) hazardous areas Measuring Principle: RTD (Pt100, wire-wound or thin-film) or thermocouple sensor in a modular thermowell/connection head assembly Measuring Range: -200 to +1100°C (depending on sensor and configuration) Process Temperature: -200 to +1100°C Approvals: ATEX, IECEx, CSA C/US, NEPSI (Ex ia intrinsically safe) Key Features: Fully modular design: housing, sensor, transmitter, and connection head selected independently Intrinsically safe certification for hazardous area use Custom insertion length available up to 4500 mm