Thermocouple input isolation safety barrier

1、 Product Overview

The thermocouple signal input suitable for hazardous areas on site is isolated and converted into a standard DC signal, which is output to the control system or other instruments in the safe area.

2、 Functional Features

1. Powered by an independent DC power supply, with isolation between the power supply input output.

2. Standard 35mm DIN rail card installation. Plug and unplug terminal block with spring compression connection.

3、 Technical indicators

1. Power supply:

Supply voltage range: 20-30VDC

Rated supply voltage: 24VDC

Current consumption (when powered by 24VDC):<30mA

2. Input from danger zone:

Input thermocouple: K; E; S；B； R；T； N；W； J and other types of thermocouples

3. Output to the safe zone:

Output current: 4-20mA; other specified currents

Output voltage: 1-5V; other specified voltages

Load resistance: ≤ 350 Ω (factory default) when outputting 4-20mA; When outputting 1-5V, ≥ 100K Ω

4. Comprehensive general parameters:

Standard accuracy: ± 0.2%,

Temperature drift: Basic error/10 ℃

Response time:<10ms

Isolation capability: 2.5KV, 1min, 50Hz between input output power supply

Insulation resistance: ≥ 100M Ω/500VDC between input output power supply

Shell material: PC (polycarbonate) material

Dimensions: 16 × 116 × 110 (mm)

Working environment temperature: -20 to+60 ℃

Suitable for connecting on-site equipment and hazardous areas: thermocouples or millivolt signal sensors. Zone 0, Zone 1, Zone 2; IIA, IIB, IIC hazardous areas.

5. Explosion proof grade mark: [Exia Ga] IIC

4、 Selection and Specifications