Dräger PIR 7000 User Manual

11
Span calibration Dräger PIR 7000 / Dräger PIR 7200
Make sure that the
measuring cuvette is
completely purged
with the chosen zero
gas.
Put magnetic wand
onto the mark » 0 «,
then remove again.
Green/yellow are on Maintenance
signal
Confirm that the gas transmit-
ter was purged with the cho-
sen zero gas.
Green/yellow flash
alternately and
slowly
Maintenance
signal
The device determines the
current zero point deviation.
Display of the zero point deviation: Deviation of 0.0 %LEL or 0.00
vol.-% CO
2
:
Green flashes at a
single rhythm:
Maintenance
signal
<1,5 %LEL resp.
<0,013 vol.-% CO
2
1)
Green flashes at a
double rhythm:
Maintenance
signal
>1,5 %LEL to <3 %LEL
resp. >0,013 vol.-% CO
2
to
<0,030 vol.-% CO
2
Green flashes at a
triple rhythm:
Maintenance
signal
>3 %LEL resp.
>0,030 vol.-% CO
2
Carry out a zero calibration:
Place the magnetic
wand on the mark
» 0 «.
Green and yellow are
on
Maintenance
signal
Calibration is acknowledged.
Remove the mag-
netic wand.
Green/yellow
flashes alternately
Maintenance
signal
Zero calibration is terminated.
Attention: Turn off the zero gas.
Remove calibration adapter PIR 7000.
Measuring mode is auto-
matically activated after
finishing calibration.
Action Status Indicator Output Signal Meaning
Prepare the device for span calibration:
Place the magnetic
wand on the mark
"S".
Green/yellow flash
alternately and
quickly
Measuring
mode
Unlock device for span cali-
bration.
Remove the mag-
netic wand.
Green and yellow are
on
Measuring
mode
Device waits for the start of
calibration.
Initiate the span calibration:
Place the magnetic
wand within 2 sec-
onds on marking
» S « for at least
1 second and then
remove it.
Green/yellow
flashes alternately
Maintenance
signal
The calibration routine is
started.
Action Status Indicator Output Signal Meaning
1) Details see Technical Handbook
Place on calibration
adapter PIR 7000.
Feed the calibration
gas to the sensor at
a rate of 0.5 L/min.
Make sure that the
measuring cuvette is
completely purged
with the correspond-
ing calibration gas.
Put magnetic wand
onto the mark » S «,
then remove again.
Green/yellow are on Maintenance
signal
Confirm that the gas transmit-
ter is completely purged with
the corresponding calibration
gas.
Green/yellow flash
alternately and
slowly
Maintenance
signal
The current calibration gas
concentration is determined.
Display of the sensitivity deviation: Current deviation from cali-
bration value which was last
saved
Green flashes at a
single rhythm:
Maintenance
signal
<5 % from last value
1)
Green flashes at a
double rhythm:
Maintenance
signal
>5 % to <10 % from last
value
Green flashes at a
triple rhythm:
Maintenance
signal
>10 % from last value
Carry out the span calibration:
Place the magnetic
wand on the mark
»S «.
Green and yellow are
on
Maintenance
signal
Calibration is acknowledged.
Remove the mag-
netic wand.
Green/yellow
flashes alternately
Maintenance
signal
The gas transmitter waits with
the termination of the calibra-
tion until the gas concentra-
tion is the same as prior to
calibration with an accuracy
of ±5 %.
Attention: Remove calibration adapter
PIR 7000 . Turn off the calibration gas.
Make sure that the gas transmitter is
no longer being purged with the corre-
sponding calibration gas.
Measuring mode is auto-
matically activated after
finishing calibration.
Action Status Indicator Output Signal Meaning

Dräger PIR 7000 Specifications

General

Detection Principle	Infrared (IR)
Pressure Range	700 to 1300 hPa
Ingress Protection	IP66/67
Gases Detected	Hydrocarbons
Measurement Range	0 - 100 %LEL (Lower Explosive Limit) or 0 - 100 vol.%
Operating Temperature	-40 to +65 °C
Output Signal	4-20 mA
Housing Material	Stainless steel
Certifications	ATEX, IECEx, UL, CSA
Response Time	t90 ≤ 4 s