Sensor Replacement - Dräger Polytron 8900 UGLD Instrucciones De Uso

Fault Cause
number
090 Sensor lock function is
activated. A sensor with
a different part number
has been connected.
105 Instrument fault.
137 Instrument fault.
064 Communication fault.
071
086 Supply voltage outside
range
087 4 to 20 mA fault at
UGLD sensor.
094 Data error in the instru-
095 ment.
096 SIL password does not
match.
8.2 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 Data error in the instru-
106 ment. Some dongle
functions like data-log-
ger, sensor test, etc.
may no longer be avail-
able.
104 Date or time setting not
valid.
105 Instrument fault.
107 Battery for data mem-
ory empty.
Instructions for use |
Dräger Polytron
Remedy
Use a sensor with the
same part number or
disable the sensor lock
function.
Have the instrument
checked by DrägerSer-
vice.
Cycle power.If this fault
occurs again: Have the
instrument checked by
DrägerService.
Check connection to
Polytron 8900 UGLD.
Check supply voltage.
Check 4 to 20 mA con-
nection to Polytron
8900 UGLD.
Reset the sensor to fac-
tory default settings. If
this fault occurs again:
Have the instrument
checked by DrägerSer-
vice.
Enter password again.
Remedy
Have the instrument
checked by DrägerSer-
vice.
Download the data as
soon as possible and
clear the data-logger.
Reset the instrument to
factory default settings.
If this error occurs
again: Have the instru-
ment checked by
DrägerService.
Set date and time
Have the instrument
checked by DrägerSer-
vice.
Have the instrument
checked by DrägerSer-
vice.
®
8900 UGLD
Warning Cause
number
110 SW dongle has been
111 removed without being
112 deactivated.
113 Alarms inhibited.
164 Sensor warm-up phase
165 has not ended.
Increased measure-
ment error must be
expected.
167 Calibration interval
170 expired.
163 Sensor temperature is
very high.
171 Zero drift too high.
182 Auto calibration not
possible.
9 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 12 months
– Inspection by trained service personnel.
– Check signal transmission to the control unit, LEDs and
triggering of alarm devices.
– Perform bump test
9.1

Sensor replacement

A sensor can be replaced in the hazardous, classified area,
without interrupting the power supply.
Sensor change function
With the menu function Change Sensor, a sensor can be
changed during operation without triggering a fault signal at
the control unit. It also ensures that all sensor data in the
microprocessor can be saved in the sensor memory
(EEPROM) before disconnecting the sensor.
Replacing the sensor
Refer to figure B on the fold-out page.
A sensor can be replaced at any time.
1. Select Settings > Sensor > Change Sensor and confirm.
 The maintenance signal is generated on the 4-20mA
interface. The display shows Please remove the
sensor.
 The Maintenance symbol is displayed.
2. Replace the old sensor with a new sensor:
a. Loosen set-screw (2)
b. Unscrew bayonet ring (3)
|
Maintenance en
Remedy
Deactivate SW dongle.
Enable alarms
Wait until the sensor
has warmed up. Do not
calibrate before sensor
is fully warmed-up.
Recalibrate the instru-
ment.
Perform zero calibra-
tion
Perform new zero and
span calibration
17