PAGE 13
ZERO CALIBRATION
continued
6. Once the reading falls below 0.5% the monitor will wait for the
reading to stabilise and then take a reference reading, this should take
several minutes, the longer the better. Once this is complete the screen
will stop flashing ‘CAL’ ›and display ~0.00%.
7. Now repeat the full calibration by pushing the ‘cal’ button until ±20.94
appears in the screen.
Again, do not randomly use this facility. It is preferable that this
zero calibration only be carried out when the PurgEye
®
100 ‘IP65’
is fitted with a new sensor.
Note: The longer the purge time and the higher the purity of gas, the better
the low level accuracy.
We will gladly carry out the replacement sensor activity for you and
provide you with an up to date calibration certificate. Please ask
your nearest HFT
®
Distributor for a quotation, or contact us directly
at sales@huntingdonfusion.com.
Your Monitor is now
ready for use.