PortaSens II
Gas Detector
C16 Leak Detector
O & M Manual
Rev. G, 11/07
- 24 -
SETTING SAMPLE MODE VARIABLES
As previously explained, the C16 detector provides the capability of measuring gas
concentrations using a predefined measuring cycle. The measuring sequence used in “Sample
Mode” measurements include the following sequence.
1. Draw sample for a predefined sampling time.
2. Measure gas concentration for a predefined measuring time. Calculate and average value
for this measuring time.
3. Allow the measured value to recover below a predefined recovery value before allowing
another cycle to start.
The sampling time, measuring time, and clearing limit are adjustable functions. To adjust
Sample Mode variables, start at display PD2 and press the SMPL key. The display shown below
will appear.
SD1
P
SAMP MEAS CLEAR DONE
Press the SAMP key and the sampling time adjustment display will allow adjustment of
the sampling time. Press the MEAS key to adjust the measuring time, and the CLEAR key to
adjust the gas concentration below which the detector must fall before another measurement
cycle can be initiated.
SD2
P
SAMPLING
00:30
ABORT INC DEC SAVE
Adjust the sampling time using the INC key to increase and
the DEC key to decrease the amount of sampling time. Press
SAVE when done. Press ABORT to return to SD1.
SD3
P
MEASURING
00:30
ABORT INC DEC SAVE
Adjust the measuring time using the INC key to increase and
the DEC key to decrease the amount of measuring time.
Press SAVE when done. Press ABORT to return to SD1.
SD4
P
15
PPM
NH3
ABORT INC DEC SAVE
Adjust the clearing value limit using the INC key to increase
and the DEC key to decrease the gas value. Press SAVE
when done. Press ABORT to return to SD1.
When sample mode variables have been programmed press DONE as needed to return
to the main display.
