Yokogawa AMM32C RTD Input Multiplexer Module
The Yokogawa AMM32C, also cataloged as the AMM32C RTD Input Multiplexer Module, operates as a dedicated hardware component for multiplexed resistance temperature detector signal acquisition and cold junction compensation within industrial DCS networks.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | AMM32C |
| Brand | Yokogawa |
| Origin | Japan |
| Weight | 1.8 kg |
| Shipping Weight | 5 kg |
| Dimensions | Not specified in source data |
| Operating Temp | 0 deg C to +50 deg C |
| Power Consumption | Not specified in source data |
| Product Type | RTD Input Multiplexer Module |
| Connecting Cable | KS8 |
| Insulation Resistance | At least 100 Mohm (500 VDC) |
| Withstanding Voltage | 500 VAC |
| Ambient Humidity | 5% to 90% RH |
Cold Junction Compensation and Channel-to-Channel Isolation
This multiplexer module executes RTD signal conditioning across multiple temperature sensing channels, converting resistance variations into standardized temperature readings. Cold junction compensation (CJC) is implemented to compensate for thermocouple reference junction temperature variations when interfacing with mixed-signal backplanes. The module requires KS8 connecting cables for field wiring termination, providing standardized connector interface for RTD element connections. Channel-to-channel isolation characteristics must be verified against system grounding requirements, as multiplexed RTD architectures share common return paths that may introduce ground loop currents in unbalanced field installations. The insulation resistance of at least 100 Mohm at 500 VDC and withstanding voltage of 500 VAC provide dielectric protection between field circuits and the DCS backplane.
Frequently Asked Questions (FAQ)
Q: What type of connecting cable is required for the AMM32C module?
A: The AMM32C requires KS8 connecting cables for field wiring termination to RTD sensing elements.
Q: What is the insulation resistance specification of this module?
A: The AMM32C provides insulation resistance of at least 100 Mohm when tested at 500 VDC, with a withstanding voltage rating of 500 VAC.
Q: What is the operating temperature range for this RTD multiplexer module?
A: The AMM32C operates within an ambient temperature range of 0 deg C to +50 deg C with humidity tolerance of 5% to 90% RH (non-condensing).
Field Installation Guidelines
Mount the AMM32C module in the designated slot position per the DCS hardware manual. Ensure the backplane power supply is de-energized before inserting or removing the module. Use only approved KS8 connecting cables for field wiring termination to maintain signal integrity and connector compatibility. Route RTD sensor cables in shielded twisted-pair configuration with the shield grounded at the DCS cabinet only to prevent ground loops. Verify RTD element type (Pt100, Pt1000, Cu100, etc.) matches the module configuration before commissioning. Perform lead wire resistance compensation verification for 2-wire and 3-wire RTD connections. Confirm ambient temperature at the installation location does not exceed +50 deg C to maintain specified accuracy. Inspect all KS8 cable connectors for proper seating and locking mechanism engagement before applying power.
Yokogawa AMM32C RTD Input Multiplexer Module
Yokogawa AMM32C RTD Input Multiplexer Module
The Yokogawa AMM32C, also cataloged as the AMM32C RTD Input Multiplexer Module, operates as a dedicated hardware component for multiplexed resistance temperature detector signal acquisition and cold junction compensation within industrial DCS networks.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | AMM32C |
| Brand | Yokogawa |
| Origin | Japan |
| Weight | 1.8 kg |
| Shipping Weight | 5 kg |
| Dimensions | Not specified in source data |
| Operating Temp | 0 deg C to +50 deg C |
| Power Consumption | Not specified in source data |
| Product Type | RTD Input Multiplexer Module |
| Connecting Cable | KS8 |
| Insulation Resistance | At least 100 Mohm (500 VDC) |
| Withstanding Voltage | 500 VAC |
| Ambient Humidity | 5% to 90% RH |
Cold Junction Compensation and Channel-to-Channel Isolation
This multiplexer module executes RTD signal conditioning across multiple temperature sensing channels, converting resistance variations into standardized temperature readings. Cold junction compensation (CJC) is implemented to compensate for thermocouple reference junction temperature variations when interfacing with mixed-signal backplanes. The module requires KS8 connecting cables for field wiring termination, providing standardized connector interface for RTD element connections. Channel-to-channel isolation characteristics must be verified against system grounding requirements, as multiplexed RTD architectures share common return paths that may introduce ground loop currents in unbalanced field installations. The insulation resistance of at least 100 Mohm at 500 VDC and withstanding voltage of 500 VAC provide dielectric protection between field circuits and the DCS backplane.
Frequently Asked Questions (FAQ)
Q: What type of connecting cable is required for the AMM32C module?
A: The AMM32C requires KS8 connecting cables for field wiring termination to RTD sensing elements.
Q: What is the insulation resistance specification of this module?
A: The AMM32C provides insulation resistance of at least 100 Mohm when tested at 500 VDC, with a withstanding voltage rating of 500 VAC.
Q: What is the operating temperature range for this RTD multiplexer module?
A: The AMM32C operates within an ambient temperature range of 0 deg C to +50 deg C with humidity tolerance of 5% to 90% RH (non-condensing).
Field Installation Guidelines
Mount the AMM32C module in the designated slot position per the DCS hardware manual. Ensure the backplane power supply is de-energized before inserting or removing the module. Use only approved KS8 connecting cables for field wiring termination to maintain signal integrity and connector compatibility. Route RTD sensor cables in shielded twisted-pair configuration with the shield grounded at the DCS cabinet only to prevent ground loops. Verify RTD element type (Pt100, Pt1000, Cu100, etc.) matches the module configuration before commissioning. Perform lead wire resistance compensation verification for 2-wire and 3-wire RTD connections. Confirm ambient temperature at the installation location does not exceed +50 deg C to maintain specified accuracy. Inspect all KS8 cable connectors for proper seating and locking mechanism engagement before applying power.
