The National Instruments 781348-01 is a PXIe-4353 PXI Temperature Input Module designed for high-performance temperature measurement in scientific and industrial applications. This module supports up to 32 thermocouple channels, along with two auto-zero channels and eight cold junction compensation channels, facilitating precise temperature sensing. It features a delta-sigma analog-to-digital converter (ADC) offering 24-bit resolution with a maximum sampling rate of 90 samples per second, and a voltage measurement range of ±80 mV. The operating temperature range is from 0°C to 55°C, while it can be safely stored in environments ranging from -40°C to 71°C, adhering to the IEC-60068-2-1 standard. This module operates effectively in relative humidity conditions of 10% to 90% (noncondensing) during use and 5% to 95% (noncondensing) during storage, in compliance with IEC-60068-2-56 standards.

The 781348-01 is compact, measuring 16 cm x 10 cm (6.3 x 3.9 in.) and weighing 139 g (4.9 oz), and connects to other devices via a 96-pin male DIN I/O connector. It requires a power supply of 570 mA at +3.3 V and 200 mA at +12 V, with a recommended warm-up time of 15 minutes and a calibration interval of one year. It remains operational at altitudes of up to 2000 meters under pollution degree 2 conditions indoors where non-conductive pollution is present. Furthermore, to withstand challenging environments, the module is designed to endure operating shocks of 30 g peak, complies with IEC-60068-2-27, and is rated for random operating vibration from 5 Hz to 500 Hz at 0.3 grms, and nonoperating vibration at 2.4 grms per IEC-60068-2-64. Compliance with various safety standards, including IEC 61010-1, EN 61010-1, UL 61010-1, and CSA 61010-1, confirms its suitability for measurement, control, and laboratory use while ensuring electromagnetic compatibility to minimize electrical interference.