Instruction Manual

Page 5
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 RTI 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 Customer Service for possible sensor
replacement.
CLEANING AND MAINTENANCE
Store the Nitrogen Tester in a temperature similar to its ambient environment of daily use.
The instructions given below describe the methods to clean the instrument, sensor and its
accessories:
Instrument
! When cleaning or disinfecting the exterior of the Nitrogen Tester, take appropriate care
to prevent any solution from entering the instrument. Do not immerse unit in fluids.
Oxygen Sensor
! Clean the sensor with a cloth moistened with a 65% alcohol / water solution.
! It’s not recommended to use spray disinfectants because they can contain salt, which
can accumulate in the sensor membrane and impair readings.
Accessory
! The threaded barbed adapter may be cleaned by washing it with a 65 percent alcohol
& water solution. The part must be thoroughly dry before it is re-used.
SPECIFICATIONS
Measurement Range: 0-99.9% Nitrogen
Resolution: 0.1% Nitrogen
Accuracy and Linearity: 1% of full scale at constant temperature, R.H. and pressure when
calibrated at full scale.
Total Accuracy: ±3% actual nitrogen level over full operating temperature range.
Response Time: 90% of final value in approximately 15 seconds at 23/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)
Humidity 0-95% (non-condensing)
Sensor Type: Galvanic fuel cell
Battery Type: 3V Lithium button-cell (Non-replaceable)
Expected Sensor Life: >900,000 O2 percent hours minimum 2-years in typical
applications
Weight: Approximately 3 ounces