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TVOC MANUAL Ion Science Ltd

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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

1 2 ... 17 18 19 20 21 22 23 24 25 26 27 ... 31 32

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