Ion Science TVOC - Manual (Page 22)

TVOC MANUAL Ion Science Ltd
Page 22 of 32
Unrivalled Detection. www.ionscience.com
Maintenance
5. The PID sensor’s metal spring
cover can be pulled off using
moderate force. The electrode stack
and PID lamp can then be removed
by holding the PID sensor upside
down.
Warning:
Ensure the electrode stack and
PID Lamp falls onto a soft surface
such as a piece of tissue. This will
avoid damaging the parts as they
fall out and avoids finger contact
with the PID lamp window.
6. Clean the PID Lamp using
Alumina powder loaded onto a
cotton bud. Rub the cotton bud /
Alumina power on the PID lamp
window using a circular motion
until a light audible squeak can be
heard.
NOTE:
Contamination of the PID Lamp
window can considerably reduce
the detection capability of the PID
cell, even when the contamination
is not visible.
Cleaning of the lamp should be carried out on a regular
basis depending on the duty cycle of the PID lamp
and the environment.
Electrode
stack
PID lamp
Metal spring
cover
Alumina powder
Cotton bud / Alumina
powder
Diagram 17
Diagram 18
Pellet