PortaSens
III
Portable Gas Leak Detector, Model D16
Operation and Maintenance Manual
Rev-A Feb 2018
- 35 -
Averaging
The gas concentration reading is computed 5 times per second and is
digitally “damped” by the D16 to suppress noise. Damping is controlled by
the “Averaging” setting, a value that ranges from 1 to 100, and represents the
number of seconds required to achieve approximately 95% of the final value
after
the sensor output changes. The default is normally 5-15, but varies
depending on the sensitivity
4
of the sensor. More damping may be
temporarily required while viewing the “un-blanked” gas reading during
calibration.
Configuring the Sensor
Table 13 Configuring the sensor.
Description
Display
Sensor Menu Page
On the “Main Display” page, touch the “Menu”
button, and then touch the “Sensor” button. This
will present the “Sensor Menu” page, as shown
on the right.
Range
On the “Sensor Menu” page, touch the “Range”
button. The numeric keypad control will appear
and display the current value, as shown on the
right. Use the keypad to enter the new value, and
then touch the “Ok” button to save it. Touch the
“Back” button to close the control and return
without saving.
Setting range
: “Range” may be set from the lower
to the upper limit, which appears on the “Sensor
Info” page (see below).
Warning
: Alarm levels do change when the
sensor full scale range is changed. Care should
be taken to ensure alarm levels are not
configured above the full scale range of the
sensor.
4 Usually expressed as output current per unit of gas exposure, ie, “uA/PPM”.