Configured for multi-channel thermal resistance evaluation in Yokogawa industrial control platforms, the Yokogawa NFAR181-S00 (NFAR181 RTD Input Module) provides direct physical/electrical execution. The solid-state sub-assembly conditions low-level analog data directly at the hardware tier to update centralized register parameters over the system backplane bus.
Hardware Specifications
Parameter
Specification
Model
NFAR181-S00
Brand
Yokogawa
Origin
Japan
Weight
Nominal low-mass profile
Dimensions
Standard Style S2 module footprint
Operating Temp
Standard industrial processing ambient limits
Power Consumption
Base logical draw from system backplane rails
Module Type
Resistance Temperature Detector (RTD) Input
Style Configuration
Style S2 execution
Analog-to-Digital Resolution
16 bit binary processing depth
Channel Capacity
4 independent measurement paths
Mounting Profile
Integrated DIN rail installation bracket
Product Type
Analog Input Modules
Process Control & Distributed System Infrastructure
Channel-to-Channel Isolation Parameters The internal circuit topology incorporates dedicated galvanic separation across all 4 individual measurement paths. This electrical boundary blocks common-mode voltage propagation and potential ground loop deltas between active field elements, preserving the integrity of the 16 bit measurement registers without data corruption on the shared bus.
4-20 mA HART Loop Protocol and Secondary Scaling While processing raw resistance vectors from external sensors, the module works alongside process control infrastructure utilizing the 4-20 mA HART loop protocol. The embedded firmware synchronizes individual register values to match standard distributed control system (DCS) data models, allowing direct variable transformation without introducing software-tier calculation latency.
