239 • Calibrating the 10.0 eV/Benzene PID Sensor GX-6000 Operator’s Manual
The instrument saves data from a Benzene Select Mode standard
measurement and from a Benzene Select Mode STEL measurement (if
performed). Data from a Benzene Select Mode standard measurement
will say “BENZENE SELECT” below the reading. Data from a Benzene
Select Mode STEL measurement will say “BENZENE SELECT” and
“STEL” below the reading. They are separate files. Data may also be
present from snap log data saved in Measuring Mode.
7 . Use the ▲AIR and SHIFT ▼ (PANIC) buttons to scroll through the
different snap log data screens. The gas readings will change but the
snap log ID is not visible from this screen.
8 . You can also go back and forth between the ID and data screens by
pressing and releasing the POWER/ENTER button.
9 . To return to the Snap Logging Screen, press and release the DISP/LOCK
button.
10 . To return to Measuring Mode, press and release the RESET button.
Calibrating the 10.0 eV/Benzene PID Sensor
Important Calibration Information
Calibration of the 10.0 eV/benzene PID sensor depends on your application
and on the calibration gas you have available. The most accurate way to
calibrate the sensor is to use benzene gas. If it is not practical or possible to
use benzene gas, another gas, such as isobutylene, can be used as long as the
calibration code indicated on the box of filter tubes is entered into the
instrument.
If you start using a new box of filter tubes, you may need to recalibrate. See
Step 6 on page 251 for further description.
See the table below for a summary of the calibration options and
requirements.
Application Calibration Options
Benzene Select
Mode benzene
detection
Option 1 1. AUTO CAL or SINGLE CAL with benzene, without tube
and holder
2. TUBE CAL with benzene, with tube and holder
Option 2 1. AUTO CAL or SINGLE CAL with isobutylene (or other
target gas)**
2. enter CAL CODE
Measuring Mode,
benzene detection
AUTO CAL with benzene (no TUBE CAL or CAL CODE required)
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