49391
Revision 3
34
Gasurveyor 700
USER MANUAL
CAUTION: Always zero the monitor in clean atmosphere.
3. After the monitor has made a discrimination, the decision is displayed as shown in
Figure 44:
PGT Discrimination
.
Figure 44: PGT Sampling
Note: The ’Methane Only!’ and ‘Other Hydrocarbons’ messages can be changed
during the monitor procurement.
Note: GS700 will indicate if the gas sample is Methane or other hydrocarbons,
providing:
• The measured sample is >1% Volume Gas
• The sample source contains a minimum of 2% Ethane
Decision point will improve with increased concentration of heavier hydrocarbons in
measured mixture (e.g. 5% of Ethane will bring the descision point to 0.5% Vol).
4. Continue the survey until the countdown is complete or press the
Stop
button.
5. After sampling is completed, the Peak reading is displayed as shown in
Figure 45: PGT Results
.
Figure 45: PGT Results
6. Press the
Quit
button to return to normal operating screen.
Note: Each completed PGT session is recorded in the instrument datalogger.
