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EM AT04 Thermocouple module

4-channel thermocouple module

Model no

EM AT04

Article No

H7 288-3AT04-0AA0

Description

4-channel thermocouple module

Dimensions WxHxD(mm)

47×100×81mm

Product parameters Wiring diagram Relevant information
Specification parameters Model no

EM AT04

Article No H7 288-3AT04-0AA0
Description 4-channel thermocouple module
Conventional norm

Dimensions WxHxD(mm)

47×100×81mm
Power Consumption 1.5W
Current Consumption(SM bus) 120mA
Current Consumption(24V DC) 40mA
Analog Input

Number of Inputs

4
Range
Rated Range (Data word)
Overshoot/Undershoot Range (Data word)
Overflow/underflow (Data word)
Please refer to the thermocouple selection table
Measuring Principle Sigma-Delta
Resolution
.Temperature 0.1°C / 0.1°F
.Voltage 15 bits+ symbol bits
Max. Voltage Resistance ±35V
Isolation
.Field side and logic side 500V AC
.Field side and 24V DC side 500V AC
.24V DC side and Logic side 500V AC
Channel to channel Isolation Support
Common mode Rejection >120dB at 120V AC
Repeatability ±0.05%FS
The cold end temperature error ±1.5°C
Cable Loop Resistance (Max) 100Ω
Diagnosis Overflow/ underflow, circuit break, 24V DC low voltage
Cable Length 100m, shielded twisted pair
Rejection Frequency Selection 400Hz(2.5ms)
60Hz(16.6ms)
50Hz(20ms)
10Hz(100ms)
Remark: when 400Hz inhibition is selected, the integration time should be 10ms to ensure the resolution and precision of module. Meanwhile this selection will also suppress noise at frequency of 100Hz and 200Hz. It is recommended to use an integration time of 100ms while measuring thermocouple. Using smaller integration time will increase repeatability error of temperature reading.
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