Photoionization Detector Module PIM CPN
User Manual
PIM_CPN - User Manual (en) - 1.08.docx
Analytical Control Instruments GmbH, Volmerstraße 9A, 12489 Berlin, Germany, www.aci-berlin.com
Page 43 of 48
13.2
How To
–
Clean the PID Lamp
On normal operation over time and for most of VOCs like benzene, toluene, hexane, acetone and others
when concentration does not exceed several tens of ppm, it is not necessary to clean the lamp window.
If PID readings often exceed 100 ppm or other heavy compounds are measured, then it is recommended to
clean the lamp window. The interval between cleaning depends on concentration level and is governed by
results of checking with use of calibrating SPAN gas.
Cleaning procedure:
1.
Remove the PID lamp like described in chapter 13.1.
2.
For window cleaning it is recommended to use cotton buds saturated with pure methanol ( analytic
grade or better ). Only wipe with light force onto the lamp window and rub in a circular motion. Repeat
this 2-3 times.
3.
After cleaning process take short brake of 1 min before the lamp will be installed into PID sensor block.
4.
Switching on the device and after 15 min operation, the calibration procedure can be started.
CAUTION
Follow common safety instruction for using methanol
Do not touch the lamp window during installation.
13.3
Maintenance Intervals
The maintenance intervals must be set keeping the environmental conditions in mind (especially in high-
polluted environment).
A periodic inspection of the module must be performed at least once a year. The first inspection shall take 3
month after installation.
It is strongly recommended that the maintenance intervals below be respected in order to guarantee reliable
operation.
Part Number
Parts
Maintenance Interval
Comment
0002975
Front isolation
12 month
The front isolation shall be exchanged
no later than 1 year after continuous
operation.
0002954
10,6eV Lamp
24 month
Parts shall be exchanged no later than
2 years after continuous operation.
0003023
11,8eV Lamp
4 month
0002974
Sensor block
24 month