User manual

USB DrDAQ User's Guide 27
Copyright © 2011 Pico Technology Ltd. All rights reserved. usbdrdaq.en
PicoLog's monitor view should now display 20.9% (or very close) for the oxygen
content in air. If so, you've successfully calibrated your USB DrDAQ oxygen sensor.
Storing the Oxygen Sensor
Ensure that the storage temperature and humidity ranges in the specification are not
exceeded. The sensor is not designed for use in liquids and using it in this way will
damage the sensor.
The sensor has a lifetime of 900,000 O2% hrs; in air at sea level the sensor will
operate effectively for over 4 years (this will decrease if the sensor is exposed to high
oxygen concentrations for prolonged periods).
The lifetime of the sensor can be affected by exceeding the storage / operating ranges
and exposure to some gaseous chemicals in high concentrations. Please avoid the
following: sodium hydroxide, acetone, MEK.