Description
The National Instruments SCXI-1321 Offset-Null and Shunt Calibration Terminal Block, with Part Number 777687-21, is specifically designed for use with strain gauges, RTDs, and thermistors in applications that involve temperature or voltage measurements across a high number of channels.
This High-Voltage Terminal Block is shielded for enhanced signal integrity and is compatible with the SCXI-1121 module revision C or later. It features 18 screw terminals for secure connections and includes a front-panel trimming potentiometer for manual nulling of offset voltage or bridge transducers.
Each channel of the SCXI-1321 is equipped with software controllable shunt calibration circuits, and a 301 k Ohm shunt resistor can be connected through a switch for calibration purposes. The nulling and shunt resistors are socketed, allowing for easy customization according to user requirements.
The terminal block can accommodate a maximum field wire gauge of 26-16 AWG and provides a cold junction sensor output with an accuracy of ±10 mV/°C and 1.3 °C. It is capable of operating at a maximum voltage of 300 V (CAT II), ensuring safety and reliability in various electrical environments.
Specification | Detail |
---|---|
Product Name | National Instruments SCXI-1321 Offset-Null and Shunt Calibration Terminal Block |
Part Number | 777687-21 |
Application | Strain gauges, RTDs, thermistors; temperature or voltage with high channel quantity |
Type | High-Voltage Terminal Block |
Shielding | Yes |
Compatibility | SCXI-1121 module revision C or later |
Screw Terminals | 18 |
Trimming Potentiometer | Front-panel, manual offset voltage or bridge transducer nulling |
Shunt Calibration | Software controllable circuits for each channel |
Shunt Resistor Value | 301 k Ohm |
Customization | Socketed nulling and shunt resistor |
Max Field Wire Gauge | 26-16 AWG |
Cold Junction Sensor Output and Accuracy | ±10 mV/°C and 1.3 °C respectively |
Max Working Voltage | 300 V (CAT II) |
Recommended Operating Temperature Range |