VEGA VEGABAR 21 - Manual (Page 24)

24 VEGABAR 21
Checking the electrical components
Diagnosis
Voltage
- the terminal voltage on VEGABAR must be
at least 12 V DC
Current
Current value Condition
3,8 … 20,5 mA standard range for output current
0 mA signal line open circuit
3,6 mA oscillator or pressure sensor ele-
ment defect
22 mA short-circuit in the signal line,
oscillator or pressure sensor ele-
ment defect
~
1 2 3
+
–
– – +
mA
Voltage Current
V
External
energy source
Current meter for
local control mA