TVOC 2 MANUAL
Ion Science Ltd
Page 15 of 32
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Installation – Hazardous location
4-wire Control equipment sensing 4 – 20 mA on return line
Diagram 8
Notes:
§
For intrinsically safe installations, the enclosure may be opened while the system is live, provided the work is
undertaken by competent personal and suitable safety precautions are taken.
Initial calibration
TVOC 2 is calibrated at Ion Science before dispatch using 100 ppm Isobutylene. However, if you wish to calibrate your
TVOC 2 after installation, Ion Science recommends the unit is left to run on its chosen settings (see ‘TVOC 2 Set-up
Section’) for 24 hours before an initial calibration is carried out, to allow the instrument to stabilise.
NOTE: If the 0-10 ppm range is selected the TVOC 2 will require calibration using 10ppm Isobutylene before use (See the
calibration section of this manual)
