en
Maintenance
Fault
Cause
number
137, 64,
Instrument fault.
91
®
Polytron
87x0 IR-specific:
Fault
Cause
number
064, 071
Communication
fault.
083
PIR 7x00 optics
dirty.
086
Supply voltage out-
side range
087
4 to 20 mA fault at
PIR 7x00 sensor.
094, 095
Data error in the
instrument.
096
SIL password does
not match with PIR
7x00.
10.2 Warnings
Warning
Cause
number
101
Data logger in
Stack mode is 100
% full and is not
logging any more
data.
102
Data logger in
Stack mode is 90
% full.
103, 106
Data error in the
instrument. Some
dongle functions
like data logger,
sensor test, etc.
may no longer be
available.
104
Date or time setting
not valid.
105
Instrument fault.
107
Battery for data
memory empty.
Remedy
Cycle power.If this fault
occurs again: Have the
instrument checked by
DrägerService.
Remedy
Check connection to PIR
7x00.
Clean PIR 7x00 optics.
Check supply voltage.
Check 4 to 20 mA connec-
tion to PIR 7x00.
Reset the sensor to factory
default settings. If this fault
occurs again: Have the
instrument checked by
DrägerService.
Enter password again.
Remedy
Have the instrument
checked by DrägerService.
Download the data as soon
as possible and clear the
data logger.
Reset the instrument to fac-
tory default settings. If this
error occurs again: Have
the instrument checked by
DrägerService.
Set date and time
Have the instrument
checked by DrägerService.
Have the instrument
checked by DrägerService.
Warning
Cause
number
110, 111,
SW dongle has
112
been removed
without being deac-
tivated.
113
Alarms inhibited.
164, 165
Sensor warm-up
phase has not
ended. Increased
measurement error
must be expected.
167, 170
Calibration interval
expired.
Negative reading.
1)
171
Value below range
minimum.
Low EC sensor
1)
163
vitality
®
1) Polytron
8100 EC only
®
Polytron
87x0 IR-specific:
Warning
Cause
number
163
Sensor tempera-
ture is very high.
171
Zero drift too high.
172
PIR 7x00 optics
dirty.
173
Zero calibration
expired for span
calibration
182
Auto calibration not
possible with PIR
7200.
11
Maintenance
– The maintenance intervals must be established for each
individual installation. Depending on safety considerations
and application specific conditions the instrument is used
in, these might need to be shortened.
Every 6 months
– Inspection by trained service personnel.
– Check signal transmission to the central controller, LEDs
and triggering of alarm devices.
Calibrations have to be performed on a regular basis, see
9 Calibration
● To check the signal transmission to the central controller,
(see "Testing the analog interface", page 27)
● To check LEDs and triggering of alarm devices, (see
"Testing alarms/relays", page 26)
Remedy
Deactivate SW dongle.
Enable alarms
Wait until the sensor has
warmed up. Do not calibrate
before sensor is fully
warmed-up.
Recalibrate the instrument.
Recalibrate zero point.
Replace sensor
Remedy
Perform zero calibration
Clean PIR 7x00 optics.
Perform zero calibration
Perform new zero and span
calibration
®
Dräger Polytron
8000 Series