The YOKOGAWA AMM22T, also cataloged as the AMM22T Thermocouple Input Multiplexer Module, operates as a dedicated hardware component for multiplexing thermocouple inputs for industrial temperature measurement and control within distributed control system platforms.
Hardware Specifications
Parameter
Specification
Model
AMM22T
Brand
Yokogawa
Origin
Country of Origin Varies by Batch
Weight
0.5 kg (1 lb 2.1 oz)
Dimensions
5.1 cm x 7.6 cm x 22.9 cm (2.0" x 3.0" x 9.0")
Operating Temp
Standard Industrial Temperature Range
Power Consumption
Standard Backplane Rail Supply
Channel Capacity
Supports up to 16 thermocouple inputs
Signal Conversion
Converts thermocouple signals to digital data for efficient processing
Channel-to-Channel Isolation and 4-20 mA HART Loop Protocol
The module integrates seamlessly with Yokogawa's automation and control systems, providing signal conversion to process thermocouple inputs efficiently. Heat management features include design precautions to prevent reference junction compensation errors caused by external heat sources. Furthermore, channel isolation layers and cold junction compensation (CJC) support safeguard measurement accuracy against thermal gradients and common-mode noise.
Frequently Asked Questions (FAQ)
Q: What is the maximum channel capacity supported by the AMM22T module?
A: The module supports up to 16 thermocouple inputs.
Q: Which expansion modules are compatible with the AMM22T hardware?
A: It is compatible with the AMT16T module, which connects directly to the bottom of the AMM22T.
Field Installation Guidelines
Ensure power to the corresponding rack segment is completely isolated before mounting or dismounting the AMM22T module. Secure the unit onto the standard backplane slot, verifying that alignment pins engage correctly without mechanical binding. Avoid installing non-AMM22T or AMM22TJ modules directly below the AMM22T to prevent reference junction errors. If heat sources are installed below the module in 19-inch rack-mounted configurations, thermal shields must be installed between the module and heat sources to maintain temperature accuracy. Check all terminal connections for proper torque specifications prior to system initialization.
