Environmental Effects; Temperature; Vibration; Relative Humidity - Salter Labs PRO2 check Elite Operation Manual

ENVIRONMENTAL EFFECTS

Temperature

Under normal operating conditions 32º F to 105º F (0º C to 41º C), the PRO 2 check Elite® unit's mi-
croprocessor and temperature circuit will compensate for variations in temperature. The temperature
during storage and shipping should not reach below -29ºF (-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 tem-
perature for 15 to 30 minutes. Unit will stabilize quicker if turned on.
Barometric Pressure
The PRO2 check Elite® multifunctional unit's microprocessor makes it unnecessary to recalibrate
dur- ing minor altitude changes. Please verify calibration if used over 5,000 feet.
Optional Altitude Adjustment
The PRO 2 check Elite® is pre-set at the factory at 2000 feet above sea level. Depending on the
altitude of the region in the world where the PRO2 check Elite® is being used, it may be necessary
to re-set the altitude setting on the device. This is easily done by a qualified service technician who
reviews and follows these simple instructions:
SET ALTITUDE COMPENSATION:
1. Press the On/Off switch to turn the PRO2 check Elite® OFF.
2. With The PRO2 check Elite® off, press and HOLD the FLOW switch, then press and release The
On/Off switch. The PRO2 check Elite® displays "Pro", "O2", then "---".
3. Release the flow switch. The PRO2 check Elite® displays "ELx" where x is a value from 0 to 7.
4. Press the FLOW switch to change altitude settings in increments of 1000 foot steps to the closest
altitude of the current location. Example ( EL3 is the setting for 3000 foot).
5. After approximately 10 seconds from the last switch press, The PRO2 check Elite® stores the
current altitude setting and starts oxygen concentration measurement displaying "Concentrator",
"O2" , and a value.
After performing the above calibration procedure, all functions of the PRO2 check
Elite® should function within the tolerances specified in this manual.
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 fluc-
tuating.
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 read-
ing up to 10% lower than the actual reading.
Note: For accurate results, never measure oxygen percentage downstream from a humidifier. This can
also damage the unit!
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