Model

Input signal

Accuracy

Alarm

Analog

output

RS485 Communication

SR-R20B

TC,RTD 0-10V,

4-20mA, 0-50mV,

0-400Ω

±0.5%F.S

2

No

No

SR-C20B

2

Yes

No

SR-R28B

2

No

Yes

SR-C28B

2

Yes

Yes

Testing function

Testing with most kinds of sensors

Ambient temperature

0-50°C

Accuracy

±0.5%F.S

Power supply

50/60Hz 110/220V AC/DC

Ouput /Relay capacity

250VAC 3A, or 30VDC 5A

Sampling rate

4 times/s

Anti-jamming

>2KV

Dielectrical strength

≥2000VDC 60S

Power consumption 

5W

4-20mA transmit current with load

<600Ω

Input signal

K,J,E,T,R,S,B,N,CU50,CU100,PT100,JPT100,0-10V,4-20mV, 0-400Ω

Resolution

TC 1°C; RTD 0.1°C; Others 0.01%