National Instruments NI-9217 C Series Temperature Input Module

National Instruments' NI-9217 (Part Number: 779592-01) is a precision analog input module intended for industrial use, namely in scenarios involving resistance and temperature measurement. With four 24-bit analog input channels, this module provides excellent precision and dependability. Resistance temperature detectors (RTDs) with three or four wires can be used with it; channels are automatically detected and configured appropriately.

The NI-9217 ensures accurate measurements over its wide operating temperature range of -200 to 850°C thanks to its 1 mA current excitation per channel. Its integrated circuitry ensures precise readings by correcting mistakes brought on the lead resistance in 3-wire mode.

Two sample rate settings are offered by the module: high-speed and high-resolution. It provides a 200 ms conversion time per channel in high-resolution mode and a 2.5 ms conversion time per channel in high-speed mode. With a balance between speed and accuracy, this adaptability meets a wide range of industrial demands.

An important feature is noise immunity, and the NI-9217 shines in this area. It ensures accurate measurements even in noisy situations with noise levels as low as 0.003°C in high-resolution mode. Furthermore, its ability to reject common modes reduces interference and preserves data integrity. A broad range of ±250 Vrms COM-to-earth ground and 50 mV channel-to-COM common-mode voltage is one of the module's input characteristics. Safety and dependability in a range of electrical configurations are guaranteed by this sturdy design.

Additionally, to prevent voltage spikes, the NI-9217 has an integrated ±30 V overvoltage protection between inputs. The industrial environments may rely on it because of its Mean Time Between Failures (MTBF) of 891,597 hours at 25°C.

This energy-efficient NI-9217 contributes to overall system sustainability with its power consumption capped at 350 mW in active mode and as low as 1 mW in sleep mode. Stable performance is guaranteed because thermal dissipation is negligible even at high operating temperatures.

Applications of the NI-9217 span across industries such as manufacturing, automotive, aerospace, and energy. It is utilized in temperature monitoring systems, quality control processes, and environmental monitoring applications where precise and reliable measurements are paramount.