MSA ALTAIR 5X PID Operating Manual page 43

Performing a Bump Test
When bumping a PID sensor, use 100ppm isobutylene balanced in air.
(1) While the device is turned ON in a clean, fresh air environment, verify that readings indicate no
gas is present.
(2) From the normal measure screen press the
(3) Verify the gas concentrations displayed match the Calibration Check Gas Cylinder. If they do
not, adjust the values through the Calibration Setup menu.
Depending on the sensors installed, there could be one to five separate Bump Tests
performed, each with a different cylinder, regulator, and tubing used.
(4) Attach the demand regulator (supplied in the calibration kit) to the cylinder providing the indi-
cated gases.
(5) Connect tubing (supplied in the calibration kit) to the regulator.
(6) Attach the other end of tubing to the device pump inlet.
(7) Press the q button to start the bump test:
the progress bar advances
the sensors respond to the gas.
The message BUMP TEST PASS indicates a successful Bump Test of the sensors.
If any sensor fails the Bump Test:
-
the message BUMP TEST FAIL appears
-
the failed sensor is indicated.
If there are more sensors to be Bump Tested, the next sensor displays and the process repeats from
Step 4.
If there are no more sensors to be Bump Tested, the tubing can be removed from the device pump
inlet.
After the Bump Test
After all installed sensors pass the Bump Test, the √ symbol displays on the MEASURE page. This
√ symbol appears on the display in the upper feature bar
If any sensor was not bump tested, or fails the Bump Test, the √ symbol does not display.
The color display:
-
temporarily shows the √ symbol at each gas reading for successfully bump tested sensors
-
√ symbol is then replaced by the present gas reading.
The √ symbol shows for 24 hours after the Bump Test.
If a sensor fails the Bump Test, calibrate the device as described in chapter 4.10.
button to display "BUMP TEST?".
ALTAIR 5X PID
Operation
US
43