42
Measuring Current
Measuring with the A range
3
Red
Black
1
2
Example: Measuring the current of the burner fl ame (A)
Control board
The measured current value of the burner fl ame varies with the
input impedance of the instrument.
The A input impedance of this instrument is approx. 100
.
Measuring with the A range
OFF
TEMP
/
Red
Black
3
1
2
Load
Power
supply
SHIFT
F
4