INFICON Sensistor ISH2000 Hydrogen Leak Detector - Manual (Page 84)

Sensistor ISH2000 Technical Reference Manual (TRM) EN- 84
E 140
E 140 Service menu
The Service Mode is reached by starting the instrument and at the same time
hold the right button down on the panel. After start a new main menu called
Service Settings will appear.
Show Password
Shows the chosen password in case the customer has forgotten the password.
Contact INFICON AB to have the code sent to you.
System Reset
Resets all parameters to default settings, stored in the detector and the prob if
it is connected. Contact INFICON AB to have the code sent to you.
Detector Signal Level
The Detector Signal Level is the level below which the sensor is considered to
have recovered from the last gas signal. It decides when the DET_SIGNAL out-
put will come on. This signal can be used to block the start of a calibration or
new test cycle in semi and fully automatic testers.
If DET_SIGNAL is high then this means that the sensor has detected hydrogen
and has not yet recovered.
Detector Signal Level can be adjusted in the Service Settings menu. You can
increase Detector Signal Level if you have many small disturbing signals. A high
setting of Detector Signal Level gives better tolerance to “noise” gas signals at
the expense of accuracy. A low setting gives best accuracy but lower tolerance
for “noise” gas signals. The Detector Signal Level is set as 1 to 100% of the
Reject Level. Default is 20%.
NOTICE! Increasing the Detector Signal Level may give poorer accuracy.
Trigg Level
Upper Limit setting for Peak hold in analysis mode.
Minimum Calibration Time
Lower limit setting for the timer which is used during calibration. Contact INFI-
CON AB to have the code sent to you.
Battery Mode
Selection of battery power. Only used to adapt software for the battery model.
Number of Significant Digits
Choice of a number of significant numbers in Analysis and Combined Mode. It
is used when a more exact measurement is needed. A good control of the envi-
ronment and calibration is required to be useful. Contact INFICON AB to have
the code sent to you.
Debug Mode
This mode is used during service and software development. Service Mode This
mode contains useful information to analyse the gas sensor behavor. If the
instrument starts in the Service Mode then it is possible to reach APC Service
Mode.Under APC Service Mode is useful information to check timers, I/O on
the Probe Control Port, and other.