The National Instruments CAL-4353 Calibration Terminal Block (Part Number: 781350-01) is a vital accessory for the precise calibration of the PXIe-4353 32-Channel, 24-Bit PXI Temperature Input Module. This front-mounting device simplifies the calibration procedure, ensuring accurate temperature measurements by facilitating the verification of the input module's performance. Its design allows compatibility with both 2-wire voltage calibrators and 4-wire resistance calibrators, providing flexibility in calibration methods. The CAL-4353 incorporates several safety features, including protection against ±30 VDC to ground and between TC+ and TC– inputs, minimizing the risk of damage during calibration. For optimal performance, annual calibration is recommended, along with a 15-minute warm-up period prior to use to guarantee consistent and accurate results.

With compact dimensions of 15.28 x 12.95 cm (6.02 x 5.10 in.) and a weight of 525 g (18.5 oz), the CAL-4353 is designed for easy handling and integration into calibration setups. It operates effectively in ambient temperatures ranging from 0°C to 55°C, withstanding non-condensing relative humidity levels of 0% to 90%. For storage, it can endure temperatures between -40°C and 71°C and non-condensing humidity levels from 5% to 95%. Additionally, it meets MIL-PRF-28800F Class 2 standards for durability, offering shock resistance up to 30 g peak, half-sine, 11 ms pulse, and resilience against random vibrations during both operational and non-operational phases. The CAL-4353 is an essential tool for ensuring the reliability and accuracy of temperature measurements in industrial applications.