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2.4 Direct Flow Calibration (Configuration B)
1. Attach the Barbed Adapter to the Handi+.
2. Connect the clear sampling tube to the Barbed Adapter.
3. Attach the other end of the clear sampling tube to a source of oxygen with
a known oxygen concentration value and initiate flow of the calibration
gas to the unit at a rate of 1-10 liters per minute (2 liters per minute is
recommended).
4. Allow the oxygen to saturate the sensor. Although a stable value is usually
observed within 30 seconds, allow at least 2 minutes to ensure complete
saturation of the sensor with the calibration gas.
5. If the Handi+ is not already turned on, do so now by pressing the analyzer
“ON” button .
6. Press the “CAL” button on the Handi+. The calibration gas value on the
analyzer display should read 20.9 or 100 depending on the gas stream used.
3.0 OPERATING THE HANDI+
To Check the Oxygen Concentration of a Sample Gas:
1. Maintain the Handi+ in an upright position such that you can read the
product label.
2. Place the Handi+ in the sample gas stream.
IMPORTANT:
» When using a standard "T" adapter, make sure that the sensor is mounted in the
adapter with the flow diverter pointing down.
» Make sure that there is a tight fit between the flow diverter and the "T" adapter.
3. Start the flow of the sample gas to the sensor.
4. Allow the oxygen sensor to remain in the flow of the sample gas until stable.
5. If the Handi+ is not already turned on, do so now by pressing the analyzer
ON button .
6. Read the value displayed on the LCD.
Configuration A
Flow Diverter
"T" Adaptor
Configuration B
Clear
Tubing
Barbed
Adapter
(To gas)
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