140ARI03000C
Schneider Electric
Overview
The Schneider Electric 140ARI03000C is an RTD (resistance temperature detector) input module for the Modicon Quantum platform. It provides eight temperature input channels using sigma-delta ADC conversion at 15-bit resolution, making it suitable for accurate temperature measurement in process and machinery monitoring.
The module achieves 120 dB common-mode rejection and 60 dB differential-mode rejection, with internal recalibration to maintain accuracy over time. It is rated for 0 to 2000 m altitude and 0 to 60 °C ambient operation, with IP20 protection and storage from −40 to 85 °C. Eight channels in a single slot make it an efficient way to bring multiple temperature points into a Quantum controller.
Application & Technical Notes
The 140ARI03000C is purpose-built for RTD sensors rather than general voltage or current signals, so it should be applied with the correct sensor types and wiring (typically 2-, 3- or 4-wire RTDs). The 15-bit sigma-delta conversion and 120 dB common-mode rejection deliver stable, accurate readings even in electrically noisy plants, and internal recalibration reduces drift-related maintenance.
Integration should follow RTD best practice: use 3- or 4-wire sensing to cancel lead resistance, keep sensor wiring away from power circuits, and confirm the controller scaling matches the sensor. Plan the backplane current and addressing for eight channels, and verify the sensor range falls within the module's supported limits.
Maintenance & Diagnostics
The 140ARI03000C is low-maintenance thanks to internal recalibration, but commissioning verification against a known temperature reference is still worthwhile. Inspect RTD wiring and terminations for corrosion or loose connections, since most temperature faults originate in the sensor or cabling rather than the module. Keep the rack within 0–60 °C and the rated altitude.
De-energise the rack before insertion or removal. Verify status indicators during startup, and store spares between −40 and 85 °C in original packaging. For critical temperature loops, cross-check against a secondary measurement at planned intervals rather than assuming continued accuracy.
Sourcing & Procurement
The 140ARI03000C is an eight-channel Quantum RTD input module; confirm your RTD sensor types (2-, 3- or 4-wire) and temperature ranges before specifying it. Genuine Schneider Electric modules are recommended for new builds and safety-related loops because they retain the original certifications and warranty.
Compatible equivalents may exist, but verify channel count, resolution, isolation and sensor support before substitution. For long-lead parts, refurbished genuine units from a reputable supplier are typically safer than clones. Buy from authorised distributors where possible and retain serial traceability.
Frequently Asked Questions
What does the 140ARI03000C measure?
It is an RTD input module providing eight resistance-temperature-detector channels for accurate temperature measurement.
What resolution and conversion method?
15-bit resolution using sigma-delta ADC conversion, with internal recalibration to limit drift.
What noise rejection does it offer?
120 dB common-mode rejection and 60 dB differential-mode rejection.
What is the operating temperature range?
0 to 60 °C ambient, with storage from −40 to 85 °C and IP20 protection.
What wiring is recommended?
3- or 4-wire RTD sensing to cancel lead resistance, with shielded cable kept away from power circuits.
Specifications
The Schneider Electric 140ARI03000C is a reliable RTD input module designed explicitly for the Modicon Quantum series. It supports eight channels and utilizes sigma delta technology for ADC conversion, providing an input resolution of 15 bits, making it suitable for accurate temperature measurement applications.
Description
| Note | The 140ARI03000C RTD input module by Schneider Electric is engineered for integration with the Modicon Quantum series. This component offers eight dedicated channels for temperature input, leveraging advanced sigma delta technology for conversion, which results in a precise input resolution of 15 bits. An impressive common mode rejection ratio of 120 dB enhances its performance, minimizing the effects of noise on the operational signals. Additionally, it features a differential mode rejection of 60 dB, which further ensures the accuracy of readings in various applications. Internal recalibration allows for easy maintenance of measurement precision. The operational altitude range extends from sea level to 2000 meters, making this module applicable in varied geographic conditions. When it comes to temperature management, the 140ARI03000C is viable in environments from 0 to 60 °C and capable of withstanding severe storage conditions down to -40 °C, and up to 85 °C, ensuring functionality in diverse climates. Designed with an IP20 protection class, this module is intended for indoor use, safeguarding against solid objects larger than 12.5 mm. Weighing 209 grams, the compact design supports efficient installation into existing systems, making it a practical choice for users seeking reliable RTD inputs in industrial applications. |
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Reproduced from the manufacturer's published data. Values marked "Not available" are absent from the source document.