CM31 NPEXA 单通道电流信号

【电压范围】15~30VDC

【响应时间】<10ms(0~90%)

【电流消耗】<45mA

【外形尺寸】W12.8×H115×D102(mm)

【额定电压】24VDC

【隔离能力】2.5KV，1min，50Hz

【输入信号】4~20mA、0~20mA、0~5V、0~10V【绝缘电阻】≥100MQ/500VDC【输出电流】4~20mA;0~20mA;0~10mA

【工作温度】-20~+60°℃

【输出电压】1~5V;0~5V;0~10V

【储存温度】-40～＋80°℃

【标准精度】士0.1%

【温度范围】5~95%RH(无冷凝)

【电压阻抗】≤500Q

【机壳材质】阻燃ABS+PC

【输出纹波】<10mVp-p

【防护等级】IP20

【温度漂移】士0.015%/°C

【整机重量】约95g~110g

NPEXA-CM31、CM311单通道电流信号输入隔离安全栅

I商品描述

隔离式安全栅采用了将输入﹑输出以及电源三方之间相互电气隔离[1〕的电路结构，同时符合本安型限制能里的要求。与齐纳式安全相比，虽然价格略高,但它其它方面的突出优点却为用户应用带来了更大的受益:

1.由于采用了三方隔离方式，因此无需系统接地⒆绵路，给设计及现场施工带来极大方便。2对危险区的仪表要求大幅度降低。现场无需采用隔离式的仪表。

2由于信号线路无需共地s使得检测和控制回路信号的稳定性和抗干扰能力大大增强·从而提高了整个系统的可靠性。

3.隔离式安全栅具备更强的输入信号处理能力，能够接受并处理热电偶、热电阻、频率等信号，这是齐纳式安全栅所无法做到的。

4.隔离式安全栅[2]可输出两路相互隔离的信号，以提供给使用同一信号源的两台设备使用·并保证两设备信号不互相干扰。同时提高所连接设备相互之间的电气安全绝缘性能。

单通道电流信号输入隔离安全栅有NPEXA-CM31S1SC31T1和NPEXA-CM31CM311两种型号，价格都在35元左右，起订量为50台。

CM31单通道电流信号输入隔离安全栅是一种保护装置，可以将现场设备和工业控制设备安全地隔离开来，防止由于电力故障、雷电、人为破坏等原因而产生的危险信号，保障人身及设备安全。

隔离栅输出的是纯电流信号。

CM31隔离式（配电）检测端安全栅将来自危险区的电流信号，经隔离变送输出单路电流/电压信号到安全区，并可对现场二线制变送器提供配电功能。产品具有高精度、高可靠性和高安全性的特点，广泛用于油田、石化、电力、化工、冶金等行业DCS系统中。检测端隔离安全栅安装在空气中不含对铬、镍、银镀层起腐蚀作用的介质的控制柜内，需要外接20-35VDC电源。安全栅输入、输出和电源之间完全隔离，安全栅稳定性、可靠性、低温度漂移和精度等质量核心技术指标在国产仪表中名列前茅。

【 Voltage range 】15~30VDC

【 Response time 】<10ms(0~90%)

【 Current consumption 】<45mA

【 Dimensions 】W12.8×H115×D102(mm)

[Rated voltage] 24VDC

[Isolation capacity] 2.5KV, 1min, 50Hz

[Input signal] 4~20mA, 0~20mA, 0~5V, 0~10V [insulation resistance] ≥100MQ/500VDC [Output current] 4~20mA; 0~20mA; 0~10mA

[Operating temperature] -20~+60° C

【 Output voltage 】1~5V; 0~5V; 0~10V

【 Storage temperature 】-40 ~ +80° C

[Standard accuracy] is 0.1%

【 Temperature range 】5~95%RH(non-condensing)

Voltage impedance ≤500Q

[Case material] flame-retardant ABS+PC

Output ripple <10mVp-p

[Protection level] IP20

【 Temperature drift 】 0.015%/°C

[Machine weight] About 95g~110g

CM31 NPEXA 单通道电流信号

NPEXA-CM31, CM311 single-channel current signal input isolation safety gate

I Product Description

The isolated safety gate adopts a circuit structure that electrically isolates the input, output and power supply [1], and meets the requirements of the endogenous safety type limiting energy. Compared with Zener type safety, although the price is slightly higher, its other outstanding advantages bring greater benefits to the user application:

1. Because of the three-way isolation method, there is no need to ground the system, which brings great convenience to the design and site construction. 2 The requirements for instruments in dangerous areas are greatly reduced. There is no need to use isolated instruments in the field.

2 Because the signal line does not need common ground s, the stability and anti-interference ability of the detection and control loop signals are greatly enhanced, thus improving the reliability of the entire system.

3. The isolated safety gate has a stronger input signal processing ability, and can accept and process thermocouples, thermal resistance, frequency and other signals, which is not possible with Zener safety gate.

4. Isolated safety grid [2] can output two mutually isolated signals to be used by two devices using the same signal source and ensure that the signals of the two devices do not interfere with each other. At the same time, improve the electrical safety insulation performance between the connected devices.

Single-channel current signal input isolation safety grid has two models, NPEXA-CM31S1SC31T1 and NPEXA-CM31CM311, the price is about 35 yuan, the MOQ is 50 sets.

CM31 single channel current signal input isolation safety grid is a protective device that can safely isolate field equipment and industrial control equipment to prevent danger signals caused by power failure, lightning, human damage and other reasons to ensure personal and equipment safety.

The isolation grid outputs a pure current signal.

The CM31 isolated (distribution) detection terminal safety grid will output a single current/voltage signal from the danger zone through the isolated converter to the safety zone, and can provide power distribution function for the field two-wire transmitter. Products with high precision, high reliability and high safety characteristics, widely used in oilfield, petrochemical, electric power, chemical, metallurgy and other industries DCS system. The detection end isolation safety grid is installed in a control cabinet that does not contain media that corrodes the chromium, nickel, and silver coatings in the air and requires an external 20-35VDC power supply. The safety gate input, output and power supply are completely isolated, and the safety gate stability, reliability, low temperature drift and accuracy and other quality core technical indicators are among the best in domestic instruments.