J/K/T/E/R/S/B Type Thermocouple Signal to RS232 or RS485 Converter

Themalcouple A-D Converter Technical Parameter:

(typical @ +25℃，Vs is rated value)

Input: Thermocouple: J type: 0℃～760℃，K type: 0℃～1000℃，T type:-100℃～400℃，

       E type:0℃～1000℃，R type: 500℃～1750℃，S type:500℃～1750℃，B type: 500℃～1800℃

       (Input type can be set through software)

Accuracy: @+25℃ as shown in Table 1.

Input Imbalance: ±0.02 uV/℃

Temperature Drift: ±1 ppm/℃(±3 ppm/℃, Max.)

Input Resistance: 100 M Ω

Band width: thermocouple   -3 dB 3.27 Hz

Switching rate: thermocouple     3.76 Sps

Common mode restraint (CMR): 120 dB(1kΩ Source Imbalance @ 50/60 Hz)

Normal mode restraint (NMR):  60 dB (1kΩ Source Imbalance @ 50/60 Hz)

Input terminal protection: 240Vrms, sustainable

                           ANSI/IEEE C37.90.1-1989 transient protection

Cold Junction Compensation Sensor

Accuracy： @+25℃          ±0.25℃ (±0.75℃, Max.)

Accuracy： +5℃～+45℃     ±0.5℃ (Non-linearity ±0.0125℃/℃)

Communication:  RS-485 interface or RS-232 interface；ASCII character protocol and MODBUS RTU communication protocol. Baud rage(300bps、600 bps、1200 bps、2400 bps、4800 bps、9600 bps、19200 bps、38400bps)(can be set through software).

Address (00H~FFH)can be set through software

Response time: 100 ms Max.

Operation Power Supply：+8 ～ 50 VDC wide range power，internal anti-inverse connection and over-voltage protection circuit.

Power Consumption：≤1W

Operation Temperature：- 45 ~ +85℃         

Operation Humidity：10 ~ 90% (no dew)

Storage Temperature：- 45 ~ +85℃               

Storage Humidity：10 ~ 95% (no dew)                                    

Isolation Withstand Voltage： 3KVDC between input and output，1 minute，stray current 1mA, Output and power are common-ground

Endure Impact Voltage： 3KVAC， 1.2/50us(peak value)

Dimension：101 mm  x  23 mm  x  116.5 mm