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Ultrasonic Oxygen Indicator
ENVIRONMENTAL EFFECTS
Temperature
Under normal operating conditions 32º F to 105º F (0º C to 41º C), the
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unit's microprocessor and temperature circuit will
compensate for variations in temperature. The temperature during storage
and shipping should not reach below -29º F (-34º C) or above 160º F (71º
C).
If the unit has been stored at other than normal room temperatures,
allow unit to
stabilize at room temperature for 15 to 30 minutes. Unit will stabilize quicker
if turned on.
Barometric Pressure
The
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multifunctional unit's microprocessor makes it
unnecessary to recalibrate during minor altitude changes. Please verify
calibration if used over 5,000 feet.
Note: If readings do not seem accurate, recalibrate the unit.
Vibration
It is recommended that the unit be used in a stable position to prevent the
display reading from fluctuating.
Note: Unit will not withstand excessive shock or vibration.
Relative Humidity/Water Vapor
The relative humidity (RH) of the gas being sampled will affect the reading
being displayed. As the RH increases, the sample gas becomes diluted with
water vapor. This decreases the percentage of all gases measured including
oxygen. Gases from high-pressure cylinders and oxygen concentrators are
basically dry (< 0.5% RH). Gas measured after a humidifier or that has a
high RH can cause a reading up to 10% lower than the actual reading.
Note: For accurate results, never measure oxygen percentage downstream
from a humidifier. This can damage the unit.
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