INFICON Sensistor ISH2000 Hydrogen Leak Detector - Manual (Page 30)

Hydrogen leak detector Sensistor ISH2000 - Operating Manual
30 OM-Sensistor ISH2000-EN-201304
EN
Displayed Gas
Displayed Gas is the unit shown on the display. If another gas is chosen, the
measured value is automatically recalculated.
Note: When selecting different types of gas it is assumed that the same type of
tracer are used in both calibration leak and test objects (typically 95% N2 /5%
H2). The conversion of different types of gas assumes laminar flow in the leak,
which is normal. The instrument displays the total flow of the tracer gas.
Multipoint Measuring
Summing up of the Measuring result. A fixed or moving number of measurements
with a maximum 25 measurement points can be chosen.The instrument must be in
Measuring Mode or Combined Mode for this function to be active. Standard probe
button functions is not available when using Multipoint Measuring, only in Locating
Mode.
To use Multipoint Measuring
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 point during the time the bar 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.
It is possible to measure or search in Combined Mode for a leak without registering
the measurement. The measurement value registers only when the staple moves
(Multipoint Measuring Time).
If a dynamic number of measurement points is selected then do the measurement in
the following steps:
1. Push the probe button to begin the first measurement.
2. Place the probe near the measurement point during the time the staples move
(Multipoint Measuring Time).
3. You might need to wait until the next measurement. The instrument signals- Wait .
4. Repeat the procedure for the next measuring point.
5. To sum up all the measurements, push and hold the probe button a short time.
Multipoint Measuring Time
Set the time for each measurement.