866.4.Maxtec www.maxtec.com6
4.4 Humidity Effect
Humidity has no effect on the performance of the Handi+ other than diluting
the gas, as long as there is no condensation. Depending on the humidity,
the gas may be diluted by as much as 4%, which proportionally reduces the
oxygen concentration. The device responds to the actual oxygen concentration
rather than the dry concentration. Environments where condensation may
occur are to be avoided since condensate may obstruct passage of gas to the
sensing surface, resulting in erroneous readings and slower response time.
For this reason, the following is recommended:
» Avoid usage in environments greater than 95% relative humidity.
» When used in a breathing circuit, place the sensor upstream of the humidifier.
5.0 CALIBRATION ERRORS AND ERROR CODES
The Handi+ analyzers have a self test feature built into the software to detect
faulty calibrations, oxygen sensor failures, and low operating voltage. These are
listed below, and include possible actions to take, if an error code occurs.
E03: No valid calibration data available
Make sure unit has reached thermal equilibrium. Press and hold the
Calibration Button for three seconds to manually force a new calibration.
E04: Battery below minimum operating voltage
Unit is at end of life, see page I for proper disposal.
CAL Err St: O2 Sensor reading not stable
Wait for displayed oxygen reading to stabilize when calibrating the device at
100% oxygen. Wait for unit to reach thermal equilibrium (Please note that this
can take up to one half hour, if the device is stored in temperatures outside the
specified operating temperature range).
CAL Err lo: Sensor voltage too low
Press and hold the Calibration Button for three seconds to manually force
a new calibration. If unit repeats this error more than three times, contact
Maxtex Customer Service for possible sensor replacement.
CAL Err hi: Sensor voltage too high
Press and hold the Calibration Button for three seconds to manually force
a new calibration. If unit repeats this error more than three times, contact
Maxtec Customer Service for possible sensor replacement.
CAL Err Bat: Battery voltage too low to recalibrate
Unit is at end of life, see page I for proper disposal.
To Next Page
Loading...
Need help?
General
