Divesoft He/O2 Analyzer, Руководство пользователя

Страница: 30 / 33

| 30 |
He/O
2
Analyzer
Defects and removal thereof
13. Defects and removal thereof
Upon activation, the analyzer is automatically tested to identify one of the following errors.
All the error messages can be confirmed by the
key and the instrument will continue to
work; however in some circumstances in a limited operation mode. The overvoltage message
(see below) is an exception, as it may be displayed at any time.
13.1 Error messages
Error 1 Helium sensor doesn‘t work correctly
• There is an error in the electronic or mechanical section of the helium sensor. The instru -
ment can be used in an emergency mode for measuring the oxygen concentration. The
analyzer must be repaired to be able to measure helium.
Error 2 Oxygen sensor damaged or missing
• The oxygen sensor is removed, disconnected or destroyed. The measuring of the oxygen
concentration will be incorrect. The sensor can be temporarily deactivated ( Menu/O2
cell used = Off ), the oxygen concentration measured by another instrument and entered
manually as a constant ( Menu/O2 substitute = n ). The method of displaying the measured
values cannot be changed, nor can oxygen sensor calibration performed.
Warning Oxygen sensor switched off
• This message is displayed every time the O2 sensor is switched off.
Error 3 Oxygen sensor expired
• The oxygen sensor is old and its output voltage is too low. The measuring will be inaccu -
rate (the “Incorrect” warning is displayed next to the value of the O2 concentration) and
some measuring modes cannot be activated. The sensor must be immediately replaced
with a new one of the recommended type.
• This error may also occur if the instrument is filled with a hypoxic mix (a mix with low
oxygen content) upon activation, for example immediately after previous measurement or
if the measured hypoxic mix is delivered before the analyzer is activated. In such a case,
switch off the instrument for a while, or connect it to a source of air before its activation.
Never use your mouth to blow air in the inlet or the outlet of the analyzer to avoid vapor
condensation inside the instrument (careful aspiration of gas by mouth is possible).
Error 4 Device is too cold
• The temperature of the analyzer is too low and the measuring may be inaccurate. Warm up
the analyzer in a warm room to increase its temperature above the freezing point (32°F).
Do not use a hot-air blower, air dryer, an oven or any other similar method to warm up
the analyzer.