9211 National Instruments 4-Channel Thermocouple Input Module

Description

9211 National Instruments 4-Channel Thermocouple Input Module

Product Dimensions：

Product Description

The NI 9211 is a 4-channel, 24-bit thermocouple input module for National Instruments’ C Series platform. It’s a key component for high-accuracy temperature measurements in a variety of industrial and research applications. The module is designed to connect directly to thermocouples and provides a number of features to ensure precise and reliable data, including integrated signal conditioning, cold-junction compensation, and a high-resolution delta-sigma analog-to-digital converter.

Product Parameters

• Model: NI 9211
• Product Type: C Series Thermocouple Input Module
• Channels: 4 thermocouple or ±80 mV analog input channels
• Resolution: 24 bits
• Maximum Sampling Rate: 14 S/s (samples per second) aggregate
• Input Range: ±80 mV
• Isolation: Channel-to-earth ground double isolation
• Integrated Features: Anti-aliasing filters, open-thermocouple detection, cold-junction compensation (CJC)
• Operating Temperature: -40 °C to 70 °C (-40 °F to 158 °F)
• Connectivity: Screw-terminal connectors

Product Advantages

• High Accuracy: The 24-bit resolution and integrated cold-junction compensation (CJC) allow for highly accurate and precise temperature measurements, which is critical for many applications.
• Safety and Reliability: The module features channel-to-earth ground double isolation, providing protection against ground loops and common-mode voltages. This ensures the safety of the user and the integrity of the measurement data in noisy electrical environments.
• Built-in Signal Conditioning: With integrated anti-aliasing filters and open-thermocouple detection, the NI 9211 reduces the need for external signal conditioning, simplifying wiring and setup.
• Rugged and Versatile: The module is built for a wide operating temperature range and is suitable for use in hazardous locations (Class I, Division 2, Groups A, B, C, D, T4), making it ideal for deployment in industrial settings.

Precautions

• Hazardous Voltages: Hazardous voltage wiring should only be performed by qualified personnel. The module should be properly insulated from human contact and circuits with hazardous voltages should not be mixed with human-accessible circuits.
• Thermocouple Wiring: To ensure the highest accuracy, use small-gauge thermocouple wire and avoid running it near hot or cold objects. It’s also recommended to keep the ambient temperature around the module as stable as possible.
• ESD Protection: As with any electronic device, proper electrostatic discharge (ESD) precautions should be taken when handling the module to prevent damage.
• Correct Installation: The module must be installed in a compatible C Series chassis and wired according to the official documentation to ensure proper functionality and safety.

Product Applications

The NI 9211 is an excellent solution for a variety of temperature measurement tasks, particularly where high accuracy and reliability are required. Its applications include:

• Industrial Process Monitoring: Monitoring temperature in ovens, furnaces, and other industrial machinery.
• Automotive Testing: Measuring temperatures in engine compartments and on test benches.
• Environmental Monitoring: Collecting temperature data for environmental chambers and research.
• Research and Development: Accurate temperature measurement for scientific experiments and material testing.

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