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V. TECHNICAL SPECIFICATIONS
5.1. Technical characteristics
Manufacturer:
OLDHAM
Type:
SURVEYOR 4B
Function:
Control station for explosive gas detectors
Capacity:
1 channel: 1 or 2 detectors
Measurement:
Measurement:
Display unit:
Continuous
None
Visual alarms:
Failure: yellow
Gas, 1st threshold: red
Gas, 2nd threshold: red
Audio alarm:
Integrated
Acknowledgement:
Manual or automatic
Electric power supplies:
AC:
DC:
230 V ~ (207 to 242 V) (programmed in factory)
12 V - - - (11.5 to 14 V)
Power consumption:
5 VA or 4 W (detector connected)
Electrical protection:
Fuse
Relays:
Relay 1: >
Relay 2 :
Common to gas and fault
Gas
Contact:
SPDT, relay 1 (positive safety)
SPDT, relay 2
Max. breaking capacity:
60 VA or 28 W resistive
Maximum voltage:
240 V ~ or 60 V - - -
Maximum current:
1 A
Measuring line:
Cable:
Maximum line length:
Maximum loop resistance
:
3 conductors
40 m (with conductor 1.5 mm²)
1.4 ohms
Mechanical:
Mounting:
On symmetrical DIN rail
Miscellaneous:
Technology:
Mains indicator light:
Housing:
Warranty:
SMC (surface mounted component)
Green LED
NORYL
1 year
Dimensions:
58 x 105 x 90 mm
Weight:
0.360 kg
Cable inlets/outlets:
Screw type terminal block
Protection of S4B box:
IP30
Operating conditions
Ambient temperature:
Relative humidity:
-10°C to +45°C
5% to 95% non-condensed
Noise level:
Not significant
