Bump Testing an Instrument with Special Sensors • 52
NOTE:
GAS 1 calibration gas will continue to be applied so that the total gas
application time is the time defined by the GAS TIME calibration
parameter. This time includes the time that the instrument was being
bump tested. If the GAS TIME
calibration parameter
is set to 90
seconds and the GAS TIME
bump test parameter
is set to 30
seconds, the instrument will sample gas for an additional 60 seconds if
the bump test fails to bring the total exposure time to 90 seconds.
The gas reading for the fifth and sixth channels will be replaced by
dashes while the standard 4 sensors are calibrated. The BUMP
LED will continue to flash amber and the CAL
LED will begin
flashing amber to indicate a calibration is taking place.
b. At the end of the calibration, the instrument displays the calibration
gas readings and the results from both the bump test and the
calibration for the standard 4 sensors with a P (pass) or an F (fail). A
bump test then begins on the fifth channel.
c. GAS 2 calibration gas will be applied to the fifth channel and the
SDM-E2 will determine if it passes bump testing. If it does not pass,
a calibration will automatically begin on that channel. If it does pass,
the bump test will continue as described in step e.
CH4 29%LEL BF CF
OXY 18.0vol% BF CF
H2S 25.0ppm BP CP
CO 45ppm BF CP
CO2 3500ppm B
NH3 ---------
CH4 29%LEL BF CF
OXY 18.0vol% BF CF
H2S 25.0ppm BP CP
CO 45ppm BF CP
CO2 3500ppm BF C
NH3 ---------
