GJ-EX
IS GJ-EX 1008.doc
5
GB
FEATURES
GJ-EX is a gas detector used for explosive gases and for
Ammonia.
GJ-EX is normally used with and connected to central unit
G27C or MPU4C / MPU6C.
GJ-EX is normally calibrated with the central unit when
delivered.
FUNCTION
The sensor continuously measures the gas concentration and
gives an analogous signal 0-5 VDC (not linear) to the control
unit.
There are 2 (3) levels set on the central unit, “
Warning”
as a
pre-alarm and
“Alarm”
to indicate high gas concentration.
When these levels are exceeded indications and relays in the
central unit are activated.
The central unit will continuously monitor the cable and indicate
“Fault alarm”
when there is a break or a short-circuit on the
cable or in the detector itself.
INSTALLATION INSTRUCTIONS
Connect the gas monitoring system according to the wiring
diagram. Control the function of the unit by applying gas to the
detector (can easily be done with gas from a cigarette lighter).
Testing of the system function, calibration and alarm levels is
recommended twice a year.
WIRING DIAGRAM
Specifications subject to change.
MODELS
GJ-EX-(NH3)-4000
GJ-EX-(CH)
GJ-EX-(H2)
GJ-EX-(HFC)
TECHNICAL DATA
Material:
Black nylon, Stainless steel
Ambient temp.:
- 30
o
C to + 50
o
C
Sensor cable:
3 x 0,75 mm
2
max. 50 m
3 x 1,5 mm
2
max 150 m
Dim. (WxHxD):
83 x 161 x 79 mm
APPROVAL:
"Equipment or Protective System intended for use in Potentially
Explosive Atmospheres, Directive 94/9/EC"
Certificate nr:
DEMKO 03 ATEX 130741X
Classification:
II 2G EEx de IIC T5
Complies with the demands for health and safety according to:
EN 500 14: 1997 E incl. A1+A2
EN 500 18: 2000 E
EN 500 19: 2000 E
