INFICON Sensistor ISH2000P Hydrogen Leak Detector, Panel Model - Manual (Page 26)

Hydrogen leak detector Sensistor ISH2000 - Operating Instructions
24 OP-Sensistor ISH2000-EN-201203
EN
In Analysis mode the probe should be moved directly from a background situation
to the test point. The size of the leak in PPM, or any other selected units, is shown
on the display. The probe can and should be removed from the measuring point as
the measured value remains on the display.
The period during which the measured value is displayed can be adjusted in the
Display Settings menu.
Reject level
Threshold level for Reject decisions. When this level has passed Reject it will be
indicated by audio and LED signals Reject on APC-bus high.
Note: The frequency of the acoustic signal in Analysis Mode is controlled by Reject
Level . A signal equal to the Reject Level will always give the same audio
frequency despite the actual signal strength.
Correlation Value
Correlation Value is used when it is necessary to correct the relation between the
detector signal and the displayed number. This might be necessary when you want
to display leak rate unit other than the calibrate leak rate unit.
Analysis Unit
The Analysis Unit is a text string with a maximum of 12 characters. It is not involved in
any calculations.
The following letters can be used; Upper and lower case English letters, the numbers
0 to 9, Е, Д, Ц, е, д, ц, %, /, and -. Space (““) is not supported. The string will be
shortened after the first space found.
Multipoint Analysis
Summing up of the analysis result. A fixed or moving number of measurements with
a maximum 25 measurement points can be chosen.The instrument must be in
Analysis Mode or Combined Mode for this function to be active. Toggle the Mode
function for hand probe, however, APC is inactivated with Multipoint Analysis.
To use Multipoint Analysis
If a fixed number of measurement points is used then measure according to the
following steps:
1. Push the probe button to begin the first measurement.
2. Place the probe on the measurement place during the time the staple moves. The
instrument registers the results.
3. You might need to wait until the next measurement. The instrument signals- Wait .
4. Repeat the procedure for the next measuring point.
When all measurements are made the sum of all leaks is shown. If the sum of all
leaks is greater or the same as the Reject Level then REJECT is shown. If the sum of
all leaks is under the Reject Level then ACCEPT is shown. And if the sum of all leaks
is greater than Reject Level before all measurements are made then REJECT is
shown.
Use < > to view individual measurements.
To begin a new measurement action or to stop a current measurement push the
probe button and hold the button for a moment.