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Allen Bradley Bulletin 931 Signal Conditioners 931U-C9C7C-BC

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931U-C9C7C-BC

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The 931U-C9C7C-BC from Allen Bradley is a versatile signal conditioner designed for precise temperature measurements. This device is suitable for use with both thermocouples and RTDs, enhancing its application range for different sensor types.

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Rockwell Disclaimer: The product is used surplus. DO Supply is not an authorized surplus dealer or affiliate for the Manufacturer of this product. The product may have older date codes or be an older series than that available direct from the factory or authorized dealers. Because DO Supply is not an authorized distributor of this product, the Original Manufacturer's warranty does not apply. While many Allen-Bradley PLC products will have firmware already installed, DO Supply makes no representation as to whether a PLC product will or will not have firmware and, if it does have firmware, whether the firmware is the revision level that you need for your application. DO Supply also makes no representations as to your ability or right to download or otherwise obtain firmware for the product from Rockwell, its distributors, or any other source. DO Supply also makes no representations as to your right to install any such firmware on the product. DO Supply will not obtain or supply firmware on your behalf. It is your obligation to comply with the terms of any End-User License Agreement or similar document related to obtaining or installing firmware.

Technical specifications for 931U-C9C7C-BC

ManufacturerAllen Bradley
Product TypeSignal Conditioner/Converter
Product LineBulletin 931 Signal Conditioners
Part Number931U-C9C7C-BC
Weight0.56 lbs (0.26 kg)
UPC612598753710
MountingDIN-rail
Converter TypeUniversal TC/3-Way Active
Power Supply20–40 V DC
Input TypeThermocouple/RTD
Isolation2.5 kV
Input Current50 mA
Output TypeActive Current Loop
Response Time100 ms
Output Current20 mA
Output Signal4–20 mA/0–50 mA
Accuracy0.001
ProtectionReverse polarity & short-circuit
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The Allen Bradley 931U-C9C7C-BC is a sophisticated signal conditioner and converter that excels in translating sensor inputs into usable output signals. It supports a broad range of inputs, specifically designed for thermocouples and resistance temperature detectors (RTDs). This device operates on a power supply between 20 and 40 V DC, making it adaptable to various systems.

When mounted on a DIN-rail, the unit presents a compact design that saves space while ensuring easy installation. The 931U-C9C7C-BC offers an isolation level of 2.5 kV, providing robust protection against electrical noise and ensuring reliable signal transmission. The input current specification reaches a maximum of 50 mA, allowing it to handle inputs from various sensors effectively.

In terms of output capabilities, this signal conditioner is designed to provide an active current loop output of 20 mA. Users can choose between two output signal configurations: 4–20 mA and 0–50 mA, ensuring flexibility for different control applications. The device boasts a rapid response time of 100 ms, enhancing its utility in dynamic environments requiring quick signal processing. Additionally, the accuracy of this conditioner is rated at 0.001, providing users with reliable and precise readings. Protection features include safeguards against reverse polarity and short circuits, which contribute to the overall durability and reliability of the unit.