PortaSens II
Gas Detector
C16 Leak Detector
O & M Manual
Rev. G, 11/07
- 17 -
OPERATING MODES
Look at the display D10 on the previous page. Along the bottom line you will see the key
functions OFF, MENU, and SMPL. To turn the unit off, press and hold the OFF key as previously
described. If you do nothing, the LCD will indicate instantaneous gas concentration as samples
are drawn into the sensor manifold by the pump. This is the normal mode of operation.
Pressing the SMPL key activates an optional measuring mode that can be useful to
insure that measurements are done the same way every time. SMPL stands for “Sample Mode”,
and is a predefined series of steps resulting in a single measurement. In sample mode, the
detector will draw sample for a fixed period of time, then measure for a fixed period of time, and
then display the average value calculated during the measuring time. At the end of the
measurement, press the CLEAR button to prepare for another measurement. If the concentration
has not dropped below a preset limit, the display will show the message “CLEARING” until the
value falls back to that limit. The instrument will emit a “beep” when the sampling and measuring
times are completed.
The sampling time, measuring time, and clearing limit are all programmable variables.
Refer to the programming section of this manual for details on adjusting these variables.
Pressing the MENU key places the instrument in the menu mode. In menu mode, three
softkeys are display as shown below.
M1
P
0
PPM
NH3
LOG INFO DONE
Menu Mode display for access to information screens and
logging functions.
Pressing the INFO key from this display will allow you to review the information display
D4 through D9 explained on the previous page. This is useful if you need to review the values of
the programmed alarm setpoints.
Pressing the LOG key provides access to data logging variables. These adjustments are
explained in detail in the DATA LOGGING section of this manual beginning on page 27.
Pressing the DONE key will return you to the main display. If no key is activated within
30 seconds, the unit will revert to the main display automatically.
