MS7974 thermocouple or thermistor input signal isolator (one in one out)

·Suitable for thermocouple or thermistor signal input, after isolation, converted into standard DC signal output to control system or other instruments.

is an intelligent temperature transmission isolation safety barrier with a USB interface, which can be programmed through a PC and control software to set the input type and range.

·Single channel, one input, one output. Powered by an independent DC power supply, with isolation between the power supply input output.

It can be used in conjunction with unit combination instruments, DCS, PLC and other systems, and is widely used in various temperature detection and control systems in industrial production processes.

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

● Input

Input signal type: Thermal resistance P1100, Cu50, Cu100, etc

Thermocouples K, E, S, B, R, T, N, J, etc

Measurement range: depends on the type of sensor used

(The input signal type and range can be programmed, and the instrument has been set before leaving the factory or according to the user's requirements. Please refer to the data printed on the instrument label or casing for details.)

● Output

Output signal: 4-20mA, 1-5V, or other specified signal

Load resistance: ≤ 550 Ω (factory default) when outputting 4-20mA current

When the output voltage is 1-5V, ≥ 100K Ω

Output ripple:<10mV p-p

● Power supply

Power supply voltage range: 20~30VDC

Rated supply voltage: 24VDC

Current consumption (when powered by 24VDC):<30mA (1 in 1 out)

● Comprehensive parameters

Standard accuracy: ± 0.1% (see input type/range and measurement error table)

Wire resistance: Three wire input of thermal resistance, ≤ 10Q/wire

Influence of wire resistance: Three wire input of thermal resistance,<0.005%/Ω

Cold end compensation accuracy: ± 1 ℃ (compensation range -15~+75 ℃)

Temperature drift: ± 0.05% FS/10 ℃

Response time:<10ms

Power on stability time:<1s

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

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

Working environment temperature: -20-+60 ℃

Storage environment temperature: -40~+80 ℃

Shell material/protection level: PC (polycarbonate) material/IP20

Dimensions: 16 × 116 × 110 (mm)