Product Description

The AMM32TJ is a high-density temperature input multiplexer engineered for Yokogawa CENTUM CS and CENTUM VP control architectures. Designed for large-scale thermal measurement, the module integrates 32 fully isolated temperature input channels into a single I/O slot, dramatically reducing cabinet space and field wiring requirements.

Supporting both 3-wire RTDs and a broad range of thermocouple types, the AMM32TJ functions as a universal temperature acquisition interface. A precision 1 mA excitation current ensures accurate RTD measurements with minimal self-heating, while a 1-second system-wide scan cycle provides fast temperature updates. Integrated burnout detection and disconnection diagnostics make the module well suited for critical process control, rotating machinery monitoring, and furnace applications.

Technical Specifications

Application Scenarios

• Large-Scale Heat Treatment
  Multi-zone temperature monitoring in furnaces, kilns, and glass tempering lines using mixed RTD and thermocouple inputs.

• Cryogenic Storage Systems
  High-accuracy temperature monitoring down to −200°C for LNG tanks, cold storage, and medical cryogenic systems.

• Turbine & Rotating Equipment Monitoring
  Bearing and casing temperature measurement using dense RTD point configurations in power generation facilities.

Product FAQ

Q: Can RTDs and thermocouples be mixed on the same AMM32TJ module?
A: Yes. The module supports mixed sensor types across its 32 channels, provided each channel is correctly configured within the CENTUM system.

Q: What happens if a sensor wire is disconnected?
A: The AMM32TJ includes configurable burnout detection. Upon wire break, the signal is driven up-scale or down-scale and reported to the DCS within 20 seconds.