M-SYSTEM WRS-3AA-R 3A038235 RTD Temperature Transmitter

Overview

M-SYSTEM WRS-3AA-R, serial number 3A038235, is a plug-in dual-output RTD signal conditioner from the M-System W-UNIT WRS series. WRS-3AA-R accepts Pt100 platinum resistance temperature sensor input, isolates and converts temperature signals into two independent analog outputs for DCS, PLC and indicator devices. This M-SYSTEM WRS-3AA-R 3A038235 is widely stocked as spare temperature transmitter for process control automation assemblies.

Features

M-SYSTEM WRS-3AA-R RTD Transmitter supports Pt100 sensor input, compatible with 2-wire or 3-wire RTD connection. It provides two isolated analog outputs, both can be configured as 4–20mA or voltage signal.WRS-3AA-R adopts three-way isolation structure: input, output 1, output 2 and power supply are mutually galvanically isolated to suppress ground loop interference. It has front panel zero and span trim potentiometers for on-site calibration, and burnout detection function for open or broken RTD wire. This plug-in module fits dedicated DIN rail base socket. It features high basic accuracy of ±0.2% FS, stable performance under industrial temperature drift. It complies with IEC and EMC standards, designed for 24/7 continuous operation in chemical, water treatment, power and oil & gas control cabinets.

Specifications

M-SYSTEM WRS-3AA-R Dual Output RTD TransmitterBrand: M-SYSTEM (MG CO.,LTD.) Model: WRS-3AA-R Serial No.: 3A038235 Series: W-UNIT WRS Type: plug-in RTD temperature signal conditioner Input: Pt100 (IEC / JIS), 2-wire / 3-wire Excitation current: 2 mA Output: 2 independent isolated analog outputs, 4–20mA / 1–5V selectable Isolation: input / output1 / output2 / power mutual isolation Dielectric strength: 2000VAC 1 min between input and output, 1000VAC 1 min between two outputs Basic accuracy: ±0.2 % FS Function: RTD burnout detection, zero / span adjustable Mounting: plug-in socket, DIN rail Terminal: M3.5 screw terminal Protection class: IP20 Ambient temperature: -10℃ ~ +55℃ Status: classic active M-System signal conditioner spare

Principle

M-SYSTEM WRS-3AA-R 3A038235 supplies constant excitation current to the Pt100 sensor. This RTD Temperature Transmitter samples resistance change caused by temperature variation, converts it into standardized analog signal, and sends two isolated output signals to the control system. The module monitors sensor continuity and triggers burnout alarm if the RTD circuit opens. Isolation barriers eliminate common-mode noise and ground loop disturbance.

Applications

M-SYSTEM WRS-3AA-R is deployed in chemical plants, boiler control systems, refrigeration units, food processing and water treatment process temperature monitoring. It transmits temperature signals to DCS and PLC with dual redundant analog output. M-SYSTEM WRS-3AA-R 3A038235 is stocked as spare RTD temperature transmitter for M-System process signal conditioning assemblies.