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The operation terminal isolation barrier (http://yunrun.com.cn/product/2326.html) isolates the 4-20mA signals from the safe area and transmits them to the hazardous area where explosion protection is required, thereby driving on-site actuators, valves, valve positioners, and other devices. http://yunrun.com.cn/upload/201901/02/201901022207362724.png Ordering models for operation terminal isolation barriers: YR9130-EX-N – 1-input/1-output operation terminal isolation barrier (1 x 4-20mA input, 1 x 4-20mA output, powered by DC24V); YR9132-EX-N – 2-input/2-output operation terminal isolation barrier (2 x 4-20mA inputs, 2 x 4-20mA outputs, powered by DC24V); YR9130-EX-LP – 1-input/1-output operation terminal isolation barrier with surge protection (1 x 4-20mA input, 1 x 4-20mA output, with input surge protection, powered by DC24V); YR9132-EX-LP – 2-input/2-output operation terminal isolation barrier with surge protection (2 x 4-20mA inputs, 2 x 4-20mA outputs, with input surge protection, powered by DC24V). Technical specifications for operation terminal isolation barriers: ◆ Applicable areas and devices: Zone 0, Zone 1, Zone 2, hazardous areas IIA, IIB, IIC; suitable for valve positioners and electro/pneumatic converters. ◆ Accuracy of operation terminal isolation barriers: 0.1% F.S. ◆ Operating voltage: 20V–35V DC ◆ Power consumption: Approximately 1W for 1-input/1-output models ； Two-way binary output, approximately 2W ◆ Input signal range: 4-20mA ◆ Output signal range: 4-20mA ◆ Allowable output load capacity: 0-650Ω ◆ Surge protection: Surge protection is an optional feature; indicated by the LP mark at the end of the model number ； Maximum continuous operating voltage: 30VDC (line to ground, line to line) ； Rated discharge current In: 5kA (line to ground, line to line) ； Maximum discharge current Imax: 10kA (line to ground) ◆ Insulation strength: 2500VAC/1 minute between intrinsically safe and non-intrinsically safe sides ； 1000VAC/1 minute between non-intrinsic safety terminals ◆ Temperature drift: 0.01%F.S/℃ ◆ Operating temperature: -20℃ to +60℃ ◆ Relative humidity: 35% to 85%RH ◆ Storage temperature: -40℃ to +80℃ ◆ Dimensions: 16.5 mm in thickness, 106 mm in width, 112 mm in height ◆ Product structure: The isolation safety gate at the operation end is mounted using 35mm rails; it has an ABS housing and plug-in terminals ◆ Total weight: 150g ◆ Product features: The isolation safety gate at the operation end can be connected to valve positioners and electric/pneumatic converters; it offers a wide range of power supply options and complies with EMC standards ◆ Installation location: The environment surrounding the installation site of the isolation safety gate should not contain any substances that could corrode chromium, nickel, or silver platings