INFICON 2020ppbPRO Portable Photoionization Detector - Manual (Page 92)

86 ISP-074-576-P1D 86
may notice a decreased
response.
UV lamp is failing. Install a new UV lamp. See
page 77.
High concentrations of
non-ionizable compounds. Chemical compounds with an
ionization potential higher than
10.6 eV or 11.7 eV scatter and
absorb UV light. Sensitivity
may be decreased. Contact
INFICON for more information.
Erroneous high
readings Sampling environment is
very humid. Water vapor may contain
mineral salts which carry a
charge. The water vapor
becomes an electrolytic
solution which becomes
ionized when it enters the
detector.
The 2020ppbPRO is not
properly calibrated. Ensure that the calibration gas
is the correct concentration
and calibrate the 2020ppbPRO
as described on page 59.
Memory Slots have not
been properly
programmed. Program the memory slots.
See page 57.
Detector has been short-
circuited by foreign
material. Contact INFICON
Date and time
setting are not
retained The battery pack was
removed before the
2020ppbPRO was turned
off. Replace the battery pack and
reset the time and date. See
page 37 & 52.
The 2020ppbPRO has not
been used for 3 months or
more. Connect the 2020ppbPRO to
the battery charger and
recharge the battery. Reset
the date and time.
Display is blank Battery pack is critically
low. Recharge or replace the
battery pack.
The battery pack is not
connected to the
2020ppbPRO properly. Ensure the battery pack
connector is securely attached
to the 2020ppbPRO.
Sample flow is
less than 300
ml/min/ Inlet filter is plugged. Replace the inlet filter. See
page 80.
Inlet filter is incorrectly
installed. Ensure the inlet filter is
installed correctly.