Oxygen Sampling Data Logger User’s Manual
Page
17
of
24
Calibration
All units are shipped factory‐calibrated. When it is time to re‐calibrate, you
have two choices. You can ship your Sampling Data Logger to us for
recalibration, or you can calibrate it yourself.
Why
is
Calibration
required?
Over time all sensors require recalibration. During recalibration, the sensor is
exposed to a known gas source, multiple readings are taken, an average is
calculated, and the difference between the new reading and the original
reading when the sensor was originally calibrated at the factory is stored in
EPROM memory. This “offset” value is then automatically added or subtracted
to any subsequent readings taken by the sensor during use.
Factory
Calibration
Factory calibration is a pre‐paid service CO2Meter offers. It not only corrects
for sensor drift, but provides a Certificate of Calibration. A Certificate of
Calibration is required for products in ISO 9000, FDA‐regulated, government
contracted, or other industries that requires traceability.
To order factory calibration, you must first get a Return Material
Authorization (RMA) number. This number insures we know your unit is
coming back to CO2Meter and returned to you the same day if possible. To
obtain an RMA number, call (877) 256‐4910 M‐F 9‐5pm EST or send an email
to:
. Please have your original order number ready.
You will receive an authorization code to access the RMA system.
Once you have an authorization code, go to
http://rmasupport.net/rma2.aspx
.
Fill in the form, enter the authorization code you were provided and an RMA
number will be assigned to you.
Please use the original packaging (if available) when returning the meter to
CO2Meter. Include the provided RMA number on the outside of the box,
preferably on the shipping label. Secure the meter inside the package properly
to prevent any damage during transit. Ship the meter to the address listed on
your RMA paperwork.