SCXI-1125 NI
This document provides important information about the SCXI-1125 module from National Instruments. The SCXI-1125 is a 32-channel thermocouple input module that provides high-accuracy temperature measurements.
Features
The SCXI-1125 module has the following features:
- 32 channels for measuring temperature using thermocouples
- High-accuracy temperature measurements with a resolution of 0.1°C
- Supports several types of thermocouples, including J, K, T, E, R, S, B, and N
- Built-in cold-junction compensation for increased accuracy
- 24-bit delta-sigma analog-to-digital converters (ADCs) for high-precision measurements
Specifications
The SCXI-1125 module has the following specifications:
- Input channels: 32 differential thermocouple inputs
- Input range: ±78 mV
- Input impedance: >10 GΩ
- Accuracy: ±0.5°C (J, K, T, E, N), ±1.0°C (B, R, S)
- Resolution: 0.1°C
- Maximum sample rate: 10 S/s
- Common-mode rejection ratio (CMRR): >110 dB
- Isolation: 250 Vrms, channel-to-chassis and channel-to-channel
Parameters
The following table lists the parameters for the SCXI-1125 module:
| Parameter | Value |
|---|---|
| Power requirements | 12 VDC, 0.5 A |
| Operating temperature range | 0°C to 55°C |
| Storage temperature range | -20°C to 70°C |
| Humidity range | 10% to 90% non-condensing |
| Dimensions | 127 mm x 210 mm x 56 mm |
| Weight | 0.8 kg |
Conclusion
The SCXI-1125 module from National Instruments is a high-accuracy temperature measurement module that supports various types of thermocouples. It has 32 channels and a resolution of 0.1°C, making it suitable for a wide range of temperature measurement applications. The module has a compact design and a rugged construction, making it ideal for use in harsh environments.
