Features:
WJ27 General parameters:
(typical @ +25 ℃, Vs to 24VDC)
Input type: thermocouple signal input, supports a variety of thermocouple signal, J/K/T/E/R/S/ B type thermocouple
Accuracy: 0.1% ( not contains cold junction sensor error)
Temperature drift:± 30 ppm / ℃ (± 50 ppm / ℃, maximum)
Input resistance: >1MΩ
Cold junction compensation sensor accuracy: ± 0.5 ℃
Bandwidth: -3 dB 10 Hz
AD Conversion rate: 10 Sps
Common Mode Rejection (CMR): 120 dB (1kΩ Source Imbalance @ 50/60 Hz)
Normal Mode Rejection (NMR): 60 dB (1kΩ Source Imbalance @ 50/60 Hz)
Input Protection: over-voltage protection, over-current protection
Communication: RS-485 protocol or RS-232 standard characters protocols and MODBUS RTU communication protocol
Baud Rate (2400,4800,9600,19200,38400,57600,115200 bps) can be selected via software
Address (0 to 255) can be selected via software
Communication Response Time: 100 ms maximum
Power Supply: +8 ~ 32VDC wide range power supply, internal anti-reverse and over-voltage protection circuit
Power Loss: less than 1W
Operating Temperature: - 45 ~ +80 ℃
Humidity: 10 ~ 90% (no condensation)
Storage Temperature: - 45 ~ +80 ℃
Storage Humidity: 10 ~ 95% (no condensation)
Isolation Voltage: input / output: 3KVDC, 1 minute, leakage current:1mA
Which output signal and power supply are common ground.
Shock Voltage: 3KVAC, 1.2/50us (peak)
Dimensions: 120 mm x 70 mm x 43mm
More details,please check :http://www.wayjun.net/Datasheet/Signal/WJ27-EN.pdf
PIN | Name | Description | PIN | Name | Description |
1 | IN5+ | Channel 5 thermocouple signal input + | 11 | IN0- | Channel 0 thermocouple signal input - |
2 | IN5- | Channel 5 thermocouple signal input - | 12 | IN0+ | Channel 0 thermocouple signal input + |
3 | IN6+ | Channel 6 thermocouple signal input + | 13 | IN1- | Channel 1 thermocouple signal input - |
4 | IN6- | Channel 6 thermocouple signal input - | 14 | IN1+ | Channel 1 thermocouple signal input + |
5 | IN7+ | Channel 7 thermocouple signal input + | 15 | IN2- | Channel 2 thermocouple signal input - |
6 | IN7- | Channel 7 thermocouple signal input - | 16 | IN2+ | Channel 2 thermocouple signal input + |
7 | DATA+ | RS-485 signal + | 17 | IN3- | Channel 3 thermocouple signal input - |
8 | DATA- | RS-485 signal - | 18 | IN3+ | Channel 3 thermocouple signal input + |
9 | PW+ | Power supply + | 19 | IN4- | Channel 4 thermocouple signal input - |
10 | GND | Power supply-, digital signal output ground | 20 | IN4+ | Channel 4 thermocouple signal input + |