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Bump Testing and Calibration Setup
Manually calibrate using a fixed-flow regulator (flow
rate between 0.5 and 1.0 liters per minute) and the
supplied special calibration adapter that covers the gas
inlet:
1. Connect the gas cylinder, flow regulator, and tubing
(must use Teflon tubing for a PID sensor) to the
instrument.
2. With the instrument in Normal Mode, enter
Programming Mode by pressing and holding both
[MODE] and [N/-] until the password screen appears.
3. Input the 4-digit password. (The default password is
"0000." If you do not know the password, select
"Done.") Then follow the menus to select single- or
multi-sensor bump test, zero, or span calibration.
Important! After a bump test or calibration, disconnect
tubing (if used) to ensure correct readings.
Single Sensor Zero Calibration
This allows you to perform zero (fresh air)
calibration on individual sensors. Even though most
toxic gas sensors can be zeroed in fresh air, some
sensors such as a parts-per-billion PID sensor for
volatile organic compounds (VOCs) should not be
zeroed in fresh air. VOCs are normally present in
ambient air, so zeroing these sensors in ambient air
will not allow for a true zero to be set for such
sensors. The parts-per-billion PID sensor with
should only be zeroed with zero air or in ambient
air using a charcoal filter or a VOC zeroing tube.
1. If you are using a charcoal filter, connect it to
the instrument.
2. If you are using dry air, connect the instrument
to a source of zero air.
Fresh Air Calibration
This procedure determines the zero point for all the
sensors that require a zero calibration. For the
oxygen sensor, Fresh Air calibration sets the point
equal to the concentration of oxygen in ambient air
(approximately 20.9% volume). To perform Fresh
Air calibration on multiple sensors at the same time:
1. Connect the instrument's inlet to a source of
dry, clean ambient air.
2. At the Calibration Menu, select "Fresh Air."
Press [Y/+] once to enter the fresh air
calibration sub-menu.
3. Start the flow of dry zero air, if used.
4. Press [Y/+] to start fresh air calibration.
5. A countdown screen appears. You can abort the
calibration at any time during the countdown by
pressing [N/-].
6. After completion, shut off the flow of zero air (if
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used) and remove any connected tubing.
3.
At the Calibration Menu, select "Single Sensor
Zero." Press [Y/+] once to enter the zero
calibration sub-menu.
4. Start the flow of zero air, if used.
5. Press [Y/+] to start zero calibration.
6. A countdown screen appears. You can abort the
calibration at any time during the countdown
by pressing [N/-].
7. If the calibration is not aborted, the display
shows the sensor names and tells you whether
the zero calibration passed or failed, followed
by the sensors' zero calibration readings.
Multi-Sensor Span Calibration
Depending on the configuration of your AreaRAE
Plus/Pro and the span gas you have, you can
perform a Span calibration simultaneously on
multiple sensors.
The selected sensors are shown on the screen,
along with the concentration settings for their Span
gas. With calibration gas connected to the
instrument, start a multi span by applying gas to the
instrument. Calibration should start after a few
seconds. If not, press [Y/+]. If you do not want to
perform a multi span, press [MODE].
Note: You can abort a multi span by pressing [N/-]
once testing has started.
When the Multi Span is done, a screen is shown,
with the sensor names and either "Pass" or "Fail"
shown next to them.
13.
Multi Sensor Bump
Depending on the configuration of your AreaRAE
Plus/Pro and the span gas you have, you can
perform a bump test simultaneously on multiple
sensors.
The selected sensors are shown on the screen.
With calibration gas connected to the instrument,
start a multiple bump test by applying gas to the
instrument and pressing [Y/+]. If you do not want
to perform a multiple bump test, press [MODE].
Note: You can abort a multiple bump test by
pressing [N/-] once testing has started.
When the Multi Bump test is done, a screen is
shown, with the sensor names and either "Pass" or
"Fail" shown next to them.
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