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Idiomas disponibles
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Maintenance
Error code
Cause
E0
Supply voltage is below
12 V or above 30 V.
E1
Hardware error
E2
Memory error, error
when exporting calibra-
tion information
E3
Sensor not connected or
defective
E4
Sensor signal below –
5% LEL or lower than –
0.9% LEL
E5
Error during zero-point
calibration (e.g. offset
too high)
E6
Error during sensitivity
calibration (e.g. sensor
sensitivity
<0.08 mV/%LEL)
E7
Error while calibrating
the 4 to 20 mA output
signal
E8
System error
If it is not possible to eliminate the faults by employing the remedial measures
described, or if other faults occur, the transmitter must be checked by
specialists and repaired, if necessary.
32
7
Remedy
7.1
Correction of the supply
voltage.
Comply with EN 60079-29-2 and the relevant national laws and regulations.
Replace 4 to 20 mA con-
verter module.
Daily
Repeat calibration pro-
–
Visual inspection to establish operational readiness.
cedure. If calibration fails
again: Hardware error.
During commissioning
Replace converter mod-
–
Perform zero-point and sensitivity adjustment.
ule.
–
Check the signal transmission to the controller and alarm triggering.
Check sensor connec-
At regular intervals,
tion and replace sensor,
if necessary.
as specified by those responsible for the gas detection system, and not
exceeding an interval of 6 months:
Calibrate the zero-point
–
Perform zero-point and sensitivity adjustment.
and sensitivity.
–
Check the signal transmission to the controller and the triggering of the
alarms (SL function – set the current output to X mA, (see "SL – set current
Check zero gas and
output to X mA", page 25)).
sensor and replace sen-
In particular, regular checks must be performed to ensure that the sensor's gas
sor, if necessary.
inlet is in a condition that does not impair the gas infeed due to corrosion or
Repeat the procedure,
deposits (dust, oil, aerosol).
check the test gas and
sensor and replace sen-
Every six months
sor, if necessary.
–
Inspection by specialists.
Repeat calibration,
The inspection intervals must be established in each individual case, depending
check the measurement
on technical safety considerations, engineering conditions, and the technical
setup for errors.
requirements of the equipment. We recommend that a service contract be
obtained with Dräger and that all repairs also be carried out by them.
Replace 4 to 20 mA con-
verter module.
If necessary
–
Replacing the sensor.
Maintenance
Maintenance
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