GX-6000 Operator’s Manual
Appendix H: 10.0 eV/Benzene PID Sensor • 219
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 7 on
page 231 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)
Measuring Mode,
general VOC
detection*
Option 1
AUTO CAL or SINGLE CAL with benzene
Option 2
AUTO CAL or SINGLE CAL with isobutylene (or other target
gas)**
* Even though it is possible to use the 10.0 eV/benzene PID sensor for general VOC detection, RKI
Instruments, Inc. recommends using the low range or high range 10.6 eV sensor instead.
** In order to calibrate to a gas other than benzene or isobutylene, you must select that other gas for the 10.0 eV/
benzene sensor in the PID Gas Name Screen in Display Mode as described in
“PID Gas Name Screen” on page 48. You must also select the appropriate calibration gas during the
calibration procedure.