SCXI-1321 偏置零点和分流校准端子 带来了调零和分流校准

【产品详情】

National Instruments SCXI-1321偏置零点和分流校准接线端子

NI SCXI-1321 （部件号： 777687-21） 是 使用 应变 计、 RTD 或 热 敏电阻 的 应用 的 理想 应用。该型号非常适合具有大量通道的温度或电压应用。这款高压接线端子采用屏蔽设计，可实现快速、可靠的信号连接。SCXI-1321 为 SCXI-1121 应变片应用带来了调零和分流校准，但只能与 SCXI-1121 模块修订版 C 或更高版本一起使用。NI SCXI-1321上有18个螺丝端子。

还有一个前面板微调电位器，使用户能够手动将失调电压或电桥传感器归零。每个通道都有分流校准电路，可以通过软件作为一个整体进行控制。用户还可以触发SCXI 1321接线端子上的开关，将301 k欧姆分流电阻与应变片并联。接线端子上的归零和分流电阻器是插座式的，因此用户可以轻松定制。该器件的最大场线规为 26-16 AWG，冷端传感器输出，精度分别为 ±10 mV/°C 和 1.3 °C。它的最大工作电压为 300 V （CAT II）。

偏移归零是一种硬件归零过程，惠斯通电桥探头具有初始偏移误差。修复此错误将提高测量精度。SCXI-1321 上的归零电路可与四分之一桥、半桥和全桥应变计布置配合使用。每个通道都有独立的归零电路，以及一个指定的微调电位器。例如，通道 0 对应于电位计 R1。通道 1 对应于电位计 R2。接下来，通道 2 对应于电位计 R14。最后，通道 3 对应于电位计 R15。

它的推荐工作温度范围为 0 至 50 °C，存储温度范围为 –20 至 70 °C，非冷凝相对湿度范围为 10% 至 90%。NI 设备 设计 符合 以下 电气 安全 标准： IEC 61010-1、 EN 61010-1、 UL 3111-1、 UL61010B-1 和 CAN/ CSA C22.2 No. 1010.1。

 SCXI-1321 偏置零点和分流校准端子 带来了调零和分流校准

【英文介绍】

National Instruments SCXI-1321 Offset zero and shunt calibration terminals

The NI SCXI-1321 (Part number: 777687-21) is ideal for applications using strain gauges, RTDS or thermistors. This model is ideal for temperature or voltage applications with a large number of channels. The high voltage terminals feature a shielded design for fast and reliable signal connections. The SCXI-1321 brings zeroing and shunt calibration to SCXI-1121 strain gauge applications, but can only be used with SCXI-1121 module Revision C or later. The NI SCXI-1321 has 18 screw terminals.

There is also a front panel trimmer potentiometer that enables users to manually zero out offset voltage or bridge sensors. Each channel has a shunt calibration circuit that can be controlled by software as a whole. The user can also trigger a switch on the SCXI 1321 terminal to parallel the 301 k ohm shunt resistor with the strain gauge. The zeroing and shunt resistors on the terminals are socket type, so users can easily customize them. The device has a maximum field line gauge of 26-16 AWG, cold-end sensor output, and accuracy of ±10 mV/°C and 1.3 °C, respectively. It has a maximum operating voltage of 300 V (CAT II).

Offset zeroing is a hardware zeroing process. The Wheatstone bridge probe has an initial offset error. Fixing this error will improve measurement accuracy. The zeroing circuit on the SCXI-1321 can be used with quarter-bridge, half-bridge and full-bridge strain gauge arrangements. Each channel has its own zeroing circuit, as well as a specified fine-tuning potentiometer. For example, channel 0 corresponds to potentiometer R1. Channel 1 corresponds to potentiometer R2. Next, channel 2 corresponds to potentiometer R14. Finally, channel 3 corresponds to potentiometer R15.

It has a recommended operating temperature range of 0 to 50 °C, a storage temperature range of -20 to 70 °C, and a non-condensing relative humidity range of 10% to 90%. NI equipment is designed to comply with the following electrical safety standards: IEC 61010-1, EN 61010-1, UL 3111-1, UL61010B-1 and CAN/ CSA C22.2 No. 1010.1.

 SCXI-1321 偏置零点和分流校准端子 带来了调零和分流校准

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