Dräger PIR 7000 Instrucciones De Uso página 22

Calibration of zero for Dräger PIR 7000 / Dräger PIR 7200
Action Status display
Prepare the device for zero calibration:
Place the magnetic Green/yellow flashes
wand on the " 0 " mark quickly alternately
and hold it there.
Remove magnetic Green and yellow on Measurement
wand.
Start zero calibration:
Within 2 seconds
apply the magnetic
wand for min.
1 second to the " 0 "
mark and then Green/yellow flashes
remove it. alternately
Position PIR 7000
calibration adapter.
Expose sensor to
nitrogen or synthetic
air at min. 0.5 L/min.
Ensure that the
measuring cuvette is
fully purged with the
selected zero gas
(min. 30 seconds,
adjust for local
conditions).
Place the magnetic Green and yellow on Maintenance
wand on the " 0 " mark
and hold it there.
Remove magnetic Green/yellow flashes
wand. slowly alternately
Display of the zero error:
Wait approx. 1 to Green flashes in a
2 minutes until the simple sequence:
yellow status light is
off. The zero error
Green flashes in a
can be read from the
double sequence:
flash rhythm of the
green status light.
Green flashes in a
triple sequence:
22
Output signal Meaning
Measurement Lock the device for zero-point
mode calibration.
Device is waiting for calibration
mode to start.
(Timeout after approx. 5 sec.)
Maintenance Calibration routine has started.
signal (Timeout after approx. 4 min.)
Confirm that the gas
signal transmitter is purged with the
selected zero gas.
Maintenance Device calculates the current
signal zero error.
(Timeout after approx. 30 min.)
Maintenance The zero error is less than the
signal defined "calibration range limit".
Maintenance Minor zero error.
signal
Maintenance The zero error is greater than
signal ±3 %LEL.
(Timeout after approx. 30 min.)
Action Status display
Adjust the zero:
Place the magnetic Green and yellow on Maintenance
wand on the " 0 " mark
and hold it there.
Remove magnetic Green/yellow flashes
wand. alternately
The gas transmitter terminates the calibration automatically and switches to measurement
mode (green on).
At the end of the calibration or if the timeout is exceeded, shut off zero gas and if necessary

remove the gas exposure accessories used for calibration.
Calibrating span for Dräger PIR 7000 / Dräger PIR 7200
Action Status display
Prepare the device for span calibration:
Place the magnetic Green/yellow flashes
wand on the " S " quickly alternately
mark and hold it there.
Remove magnetic Green and yellow on Measurement
wand.
Start span calibration:
Within 2 seconds
apply the magnetic
wand for min.
1 second to the " S "
mark and then Green/yellow flashes
remove it. alternately
Position PIR 7000
calibration adapter.
Expose the sensor
to calibration gas at
min. 0.5 L/min.
Ensure that the
measuring cuvette is
fully purged with the
selected calibration
gas (min. 30 seconds,
adjust for local
conditions).
Place the magnetic Green and yellow on Maintenance
wand on the " S "
mark and hold it there.
Remove magnetic Green/yellow flashes
wand. slowly alternately
Output signal Meaning
Adjustment is acknowledged.
signal
Maintenance Zero adjustment is completed.
signal
Output signal Meaning
Measurement Lock the device for span
mode calibration.
Device is waiting for calibration
mode to start.
(Timeout after approx. 5 sec.)
Maintenance Calibration routine has started.
signal (Timeout after approx. 4 min.)
Confirm that the gas
signal transmitter is purged with the
selected calibration gas.
Maintenance Device calculates the current
signal display error.
(Timeout after approx. 30 min.)