National Instruments NI-9945

The NI-9945 Terminal Block from National Instruments is designed for seamless integration with the NI-9237 strain bridge input module, facilitating the addition of a quarter bridge configuration. This reliable terminal block enhances measurement precision and data acquisition capabilities while supporting the use of shielded cables for optimal signal termination with minimal noise interference. Available in two variants—part number 194739-01 for standard functionality and part number 194739-02 for high accuracy—the NI-9945 provides sturdy performance features.

Installation is straightforward; it requires a plastic tie strap for strain relief and an M4x20 screw to secure it within the appropriate clearance holes. Operating efficiently across a broad temperature range of -40 °C to 70 °C, the NI-9945 features a resistor value of 350 Ω, with minimal resistance drift of 0.0035 Ω/°C, ensuring stable and reliable measurements over time. The unit's resistor tolerance is maximized at 0.1% at 25 °C, and it supports a maximum resistor power of 0.25 W. Compact in size, measuring 2.6 in. × 0.85 in. × 0.90 in. and weighing just 1.1 oz, the NI-9945 Terminal Block offers a space-efficient solution without compromising on performance. A three-year warranty and manuals available for download further enhance user confidence in this essential addition to your control system.