8
– Technical Specifications
19
| Technical Specifications
Common
Ingress Protection
IP66
Weight
800 g
Dimensions
60 X 120 mm
Source mode current
4-20 mA
Max. current
25 mA
Fault current
<1 mA
OLC 20d
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 with 3x1.5 mm2 (32 ohms
in loop mode)
Output signal
mV bridge output, 3 wires
OLCT 20d
Power supply:
voltage on detector terminals = 15 Vdc to 30 Vdc
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 mm2 (32 ohms in
loop mode)
2-wire version = 4 km as 3x 1.5 mm2 (32 ohms in
loop mode)
OLCT 20i
Zener barrier:
28 Vdc max - 300 ohms
Supply voltage for barrier:
19 Vdc to 26 Vdc
Voltage on detector terminals: 10 Vdc to 26 Vdc
Power consumption:
25 mA max
Load resistance:
47 ohms
Line length (shielded cable):
1 km as 3x 1.5 mm2 (32 ohms in loop mode)
Summary of Contents for OLCT 20
Page 1: ...1 User manual OLCT 20 Part Number NPO20GB Revision E 0 The Fixed Gas Detection Experts...
Page 8: ...1 Overwiew 4...
Page 22: ...7 Accessories 18...
Page 28: ...8 Technical Specifications 24...
Page 29: ...9 EU Declaration of Conformity 25 EU Declaration of Conformity...
