AAR145-S03 S1 Yokogawa RTD/POT Module Datasheet

Yokogawa AAR145-S03 S1 RTD/POT Input Module

Yokogawa AAR145-S03 S1 RTD/POT Input Module

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Configured for temperature and resistance measurement in Yokogawa control systems, the Yokogawa AAR145-S03 S1 (AAR145 RTD/POT Input Module) provides direct...

SKU: AAR145-S03

Manufacturer: Yokogawa
Product No.: AAR145-S03
Product Type: Analog Input Modules
Product Origin: JAPAN
Payment:T/T, Western Union
Weight: 300g
Shipping port: Xiamen
Warranty: 12 months

Description Reviews

Configured for temperature and resistance measurement in Yokogawa control systems, the Yokogawa AAR145-S03 S1 (AAR145 RTD/POT Input Module) provides direct physical/electrical execution. This hardware component interfaces analog field instruments, such as resistance temperature detectors and potentiometers, directly with the controller backplane to digitize variable thermal and mechanical displacement data.

Suffix Breakdown & Model Matrix

AAR145: Base RTD/Potentiometer Input Module card architecture
-S: Standard hardware type classification
0: Fixed configuration slot designator
3: ISA G3 environmental protection coating combined with an extended operating temperature range profile (-20 to +70 deg C)
S1: Hardware style revision indicator

Hardware Specifications

Parameter	Specification
Model	AAR145-S03 S1
Brand	Yokogawa
Origin	USA
Weight	0.3 kg
Dimensions	3.3 cm x 10.7 cm x 13 cm
Operating Temp	-20 to +70 deg C
Power Consumption	Max. 350 mA (5 V DC backplane draw)
Input Channels	16 isolated channels
Signal Types	RTD (Resistance Temperature Detector) / POT (Potentiometer)
Measurement Current	1 mA (for RTD configurations)
Accuracy	RTD: +/-150 mOhm; POT: +/-0.2% FS
Wiring Resistance	<= 150 Ohm per wire maximum allowance
Channel Isolation	200 V AC for 1 minute duration
System Isolation	500 V AC input-to-system (1500 V AC single card dielectric rating)
Relative Humidity	5-95 % RH (non-condensing)

Process Control & DCS Instrumentation Properties

The module utilizes independent analog-to-digital processing loops to handle 16 distinct signal paths simultaneously. Channel-to-channel isolation safeguards the internal multiplexing hardware against voltage differentials across field grounding points, suppressing common-mode electrical interference. Temperature computations account for lead-wire resistance offsets, while integrated cold junction compensation strategies or direct three-wire resistance matching ensure linear tracking of sensor vectors.

Frequently Asked Questions

Q: What are the installation restrictions regarding mixed sensor types across the 16 channels?

A: The AAR145-S03 allows per-channel configuration via the system software. RTD sensors and potentiometer inputs can be populated concurrently on the same card, provided the engineering software attributes match the physical wiring landing on each terminal block channel.

Q: How does the module react to a wire break or open-circuit condition on an active RTD channel?

A: The module executes a upscale or downscale burnout drive depending on system programming parameters. When wire resistance exceeds the 150 Ohm physical threshold, the input channels register an out-of-bounds fault state, triggering an error flag across the system backplane interface.

Q: What are the backplane load limitations when nesting multiple AAR145 modules within a single I/O node?

A: Each module demands up to 350 mA from the 5 V DC backplane supply. The total cumulative current consumption of all installed modules must remain beneath the aggregate capacity of the node power supply modules to prevent voltage sag conditions.

Field Installation Guidelines

Terminal Landing and Strain Relief: Maintain separation between low-voltage sensor lines and high-voltage power mains. Utilize shielded twisted-pair cables for all RTD/POT runs and terminate the drain wires directly at the cabinet instrument ground strip.
Environmental Enclosure Upkeep: Ensure the cabinet cooling or filtration infrastructure operates within parameters to prevent moisture buildup. The ISA G3 coating protects the inner circuitry from gas-phase chemical contamination, but liquid condensation will cause measurement drift.
Tightening and Wire Gauge Constraints: Confirm that field wiring leads do not exceed the 150 Ohm per-line resistance metric. Ensure terminal connections are torqued down securely to eliminate cold-junction variations or loose contact resistances at the terminal face.

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