48
Entek IRD 6666 and 6667 Protection Monitors
Testing Calibration and Relays
Repeat this process for channels 2–6.
The following table gives you example settings, inputs, and readings for several 6667
monitor configurations.
Note: Accuracy is ±2.5% of full scale.
*
When using a DC voltage source, the cold junction temperature voltage must be
subtracted from the input voltage.
** When using a thermocouple simulator, the 6667 thermocouple conditioning unit
corrects for the cold junction temperature.
“B” config
“H” config
“P” config
Thermocouple type
K
T
J
Display units (UNITS 1)
°C
°C
°F
Full scale low
0
0
0
Full scale high
200
100
300
Cold junction temp /voltage (mV)
20°C / 0.798
20°C / 0.789
20°C / 1.019
Input voltage 50% full scale (mV)*
4.068-0.789
2.138-0.789
3.528-1.019
Input temperature 50% full scale**
100°C
50°C
150°F
Front panel digital display
100
50
150
4–20 mA recorder terminals (mA)
12
12
12
Input voltage full scale high (mV)*
8.137-0.789
4.277-0.789
7.942-1.019
Input temperature full scale high**
200°C
100°C
300°F
Front panel digital display
200
100
300
4–20 mA recorder terminals (mA)
20
20
20
Input voltage full scale low (mV)*
0-0.798
0-0.789
-0.886-1.019
Input temperature full scale low**
0°C
0°C
0°F
Front panel digital display
0
0
0
4–20 mA recorder terminals (mA)
4
4
4
