ZEN-LOG-MAN-16V03 (0930)
Copyright © 2016 Define Instruments
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7
INPUT WIRING & SPECIFICATIONS
CAUTION
Risk of electric shock.
Dangerous and lethal voltages may be present on the input termi-
nals. Please take appropriate precautions to ensure safety.
CAUTION
Risk of danger.
The sensor input can potentially float to dangerous and unexpected volt-
ages depending on what external circuit it is connected to. Appropriate considerations
must be given to the potential of the sensor input with respect to earth common.
7.1 - Current input
Range
0–20mA, 4–20mA
Input impedance
45Ω
Maximum over-range
protected by PTC
to 24V DC
Accuracy
0.1% FSO max
Linearity & repeatability
0.1% FSO max
Channel separation
0.001% max
Ambient drift
0.003%/°C FSO typical
RF immunity
1% effect FSO typical
0/4–20mA DC is the most commonly used analog signal in industry, and is universally accepted.
As a current loop, it is unaffected by voltage drops in cables, and can be transmitted over long
distances without signal degradation.
Current
0/4–20mA
2 Wire Loop
Powered
Transmitter
4–20mA
External
+24V
Supply
3 Wire
Transmitter
0/4–20mA
O
utput
Output
External
+24V
Supply
4 Wire
Transmitter
0/4–20mA
O
utput
O
utput
External
+24V Supply
