Ion-science TVOC Bedienungsanleitung PDF herunterladen (Seite 18)

TVOC MANUAL Ion Science Ltd

Page 18 of 32

Unrivalled Detection. www.ionscience.com

Calibration

Calibration routine

Ion Science recommends calibrating TVOC after any maintenance or lamp cleaning is carried out and on a 3

monthly basis to ensure TVOC is working to specification.

NOTE: Please read this entire calibration procedure before attempting a calibration.

TVOC calibration is undertaken in four steps:

1. Setting the ZERO (Using clean gas via carbon filter)

2. Setting the gas tolerance (1 – 200 ppm Isobutylene on 0-100 ppm and 0-1000 ppm ranges)

(0.1 – 20.0 ppm Isobutylene on the 0-10ppm range)

3. Setting the SPAN (Using the SPAN gas)

Setting the ZERO

1 – Place the calibration magnet over the top right hand corner of the Ion Science logo to enter

calibration mode. The ‘ZERO LED’ will illuminate and the ‘STATUS LED’ will extinguish.

2 – Remove the calibration magnet

3 – Insert the calibration adaptor into the sensor cap, attach the carbon filter to the calibration adaptor.

The carbon filter should be attached to the hand aspirator.

4 – Again place the calibration magnet over the logo. The ‘ZERO LED’ will flash, during this stage

TVOC displays a direct millivolt (mV) output from the PID sensor.

STATUS LED

ZERO LED

SPAN LED

FAULT LED

Calibration adaptor

Carbon filter

Hand

aspirator

Diagram 11

Diagram 12: LED’s

STATUS, ZERO, SPAN, FAULT

Diagram 13

1 2 ... 13 14 15 16 17 18 19 20 21 22 23 ... 31 32

Keine Kommentare

Ion-science TVOC Bedienungsanleitung Seite 18