PortaSens II
Gas Detector
C16 Leak Detector
O & M Manual
Rev. G, 11/07
- 26 -
FIGURE 5 - CALIBRATION FLOW SCHEMATIC
To zero the detector, start at display PD1 and press the SENS key. The display CD1 will
appear.
CD1
P
0
PPM
NH3
ZERO SPAN DONE
Initial display for access to zero and span functions. Press
ZERO to automatically store sensor zero. Press SPAN to
adjust sensor span value. Press DONE to exit.
To adjust the zero, press the ZERO key and display CD2 will appear. Be sure that the
unit is drawing in air free of the target gas or any interferences. Adjust as described in CD2
below.
CD2
P
0
PPM
NH3
ABORT SAVE
Zero the unit by pressing the SAVE key. Any offset will be
stored automatically and the display set to zero. Press
ABORT to return to CD1 without saving the new zero.
To adjust the span of the sensor module, press the SPAN key and display CD3 will
appear. At this point, it will be necessary to feed span gas through the bypass “T” connected to
the manifold. Turn on span gas flow at a minimum of 500 cc./min. and allow to flow for 10
minutes. Span gas cylinders will be marked with the concentration of the specific gas on the
label. After 10 minutes, adjust the display to the indicated span gas value as described in CD3.
CD3
P
50
PPM
NH3
ABORT INC DEC SAVE
Adjust the display value to the span gas value using the INC
key to increase and the DEC key to decrease the value.
Press SAVE when done. Press ABORT to return to CD1.
When calibration is complete, press DONE as needed to return to the main display.
C16
PortaSens II
CAL GAS
SOURCE
BYPASS “T”
TO VENT
