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WWW.MAXTEC.COM • (800) 748-5355
6.0 CALIBRATION ERRORS AND
ERROR CODES
The N2 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 pos-
sible 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 calibra-
tion. If unit repeats this error more than three times, contact Maxtec 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 calibra-
tion. 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.
7.0 CLEANING, MAINTENANCE, AND
DISPOSAL
Store the N2 analyzer in a temperature similar to its ambient environment of daily use. The
instructions given below describes the methods to clean the instrument, sensor and its
accessories:
7.1 Instrument
•
When cleaning or disinfecting the exterior of the N2 analyzer, take appropriate
care to prevent any solution from entering the instrument.
DO NOT
immerse unit in fluids.
7.2 Oxygen Sensor
•
Clean the sensor with a cloth moistened with a 65% alcohol / water solution.
•
We do not recommend use of spray disinfectants because they can contain salt,
which can accumulate in the sensor membrane and impair readings.
DO NOT
throw away. Dispose of properly in accordance with local regulations.
7.3 Accessory
•
The threaded barbed adapter may be cleaned by washing it with a 65% alcohol/
water solution. The part must be thoroughly dry before it is re-used.
8.0 SPECIFICATIONS
Sensor Type: .............................................................................................................. Galvanic fuel cell
Measurement Range: ..............................................................................................0-99.9% Nitrogen
Resolution/Display: ........................................................................................................................0.1%
The three digit LCD indicates values between 0.0 - 99.9% oxygen.
Over range indicated by one decimal point on display located after the first digit.
Accuracy and Linearity: ................................± 1% of full scale at constant temperature, R.H. and
@ 15˚C - 40˚C pressure when calibrated at full scale.
± 3% actual oxygen level over full operating temperature.
Response Time: ..........................................................< 15 seconds for 90% step change. (at 25˚C)
Warm-up Time: .............................................................................................................None required
Operating Temperature: ...........................................................................15˚C - 40˚C (59˚F - 104˚F)
Storage Temperature: ................................................................................-15˚C - 50˚C (5˚F - 122˚F)
Operating Pressure: .........................................................................Atmospheric pressure to 3psig.
Environmental: .....................................................General purpose housing equivalent to NEMA 1.
The Handi+ is not waterproof. 0-95% RH, non-condensing.
Warranty: ....................................................Twenty-four months in normal operating conditions.
Power Requirements: ................................................................................Powered by one internal,
non-replaceable Lithium battery, CR2450.
Power on push button automatically shuts off after 80 seconds time-out.
Electronics rated general purpose;
not for use in hazardous areas or for use with flammable gases.
Weight: ......................................................................................................................Approx. 3 Ounces
Battery Life:................................................................................Approx. 1850 hours (74,000 cycles)
Sample Port: .................................................................M16 x1 Thread with barbed tubing adapter.
Operating Pressure: ........................................................................Atmospheric pressure to 3 psig
Expected Storage Life : ............................................... Two months with freshness seal on sensor.
2305 South 1070 West
Salt Lake City, Utah 84119
(800) 748-5355
www.maxtec.com