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6
Technical characteristics of OLC 20
Power supply
:
voltage on detector terminals = 2.8 V max
Power consumption
:
3-wire version = 400 mA max
Measurement signal
:
Wheatstone bridge
Line length
(shielded cable):
3-wire version = 1 km as 3x 1.5 mm
2
(32 ohms in loop mode)
Output signal
mV bridge output, 3 wires
Ingress Protection
IP66
Weight
800 g
Dimensions
60 X 120 mm
7
Technical characteristics of OLCT 20
A)
Explosion-proof version
Power supply
:
voltage on detector terminals = 15 V to 30 V
Power consumption
:
3-wire version = 100 mA
2-wire version = 25 mA
Load resistance
:
maximum resistance = 250 ohms
Line length
(shielded cable):
3-wire version = 1 km as 3x 1.5 mm
2
(32 ohms in
loop mode)
2-wire version = 4 km as 3x 1.5 mm
2
(32 ohms in
loop mode)
B)
Intrinsic safety version
Characteristics of ZENER barrier:
28 V - 300 ohms
Supply voltage for barrier:
19 V to 26 V
Voltage on detector terminals:
10 V to 26 V
Power consumption:
25 mA max
Load resistance:
47 ohms
Line length (shielded cable):
1 km as 3x 1.5 mm
2
(32 ohms in loop mode)
Output signal
Source mode current
4-20 mA
Max. current
25 mA
Fault current
<1 mA
Miscellaneous
Ingress Protection
IP66
Weight
800 g
Dimensions
60 X 120 mm