National Instruments CAL-9214 Calibration Terminal Block
The CAL-9214 (Part Number: 781771-01) is a National Instruments-designed special-purpose calibration terminal block to be used with the high-precision NI 9214 thermocouple input module. The CAL-9214 is able to perform exacting calibration via solid connections of the 16 channels for thermocouples and 3 for cold-junction compensations in the module. It's the perfect complement that will assure one that an accurate result would be gained by the use of the NI 9214 at temperature measurements.
The CAL-9214 connects directly to the front connector of the NI 9214 and is securely fastened using two jackscrews. The system of connection ensures stability without the slightest chance of interference or loss of signal. The design has a pinout configuration for precision calibration and testing, thus allowing the connection of high-accuracy voltage and resistance calibrators. The CAL-9214 should be correctly installed without overtightening the screws for continued functionality.
This terminal block is critical in calibration and verification procedures. It allows for controlled testing of voltage and resistance across the NI 9214's channels, supporting verification of as-found and as-left conditions. During calibration, the CAL-9214 allows for adjustments to the NI 9214 voltage and CJC channels to meet specified accuracy requirements under defined environmental conditions. It also extends to updating EEPROM for keeping calibration coefficients and settings directly in the module for performance consistency.
The CAL-9214 uses a certain specification in environmental parameters for optimal results. The ambient temperature it requires is 23°C ±5°C; shielded copper wire should be used to reduce noise and thermal offsets. Safety and functionality require not connecting voltages over 10 VDC with the CAL-9214. Extremely robust, the compatibility of a high-precision calibration system like Fluke 5520A makes it an ideal choice in many high-demand industrial and laboratory requirements.
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