INFICON Sensistor ISH2000P Hydrogen Leak Detector, Panel Model - Manual (Page 32)

Hydrogen leak detector Sensistor ISH2000 - Operating Instructions
30 OP-Sensistor ISH2000-EN-201203
EN
During operation the heat of the probe tip is 50ºC
Note: There are a variety of different probes that can be connected to the Sensistor
ISH2000. When using an active probe please refer to the respective probe
manual.
Changing the Probe
After attaching a probe the Sensistor ISH2000 needs to stabilize, and the green LED
should blink. If it does not, then there is a fault in the cable or the hydrogen sensor
inside the probe is faulty.
When the stabilisation period is over the green LED should stay on. Before using the
Sensistor ISH2000 the instrument needs to be calibrated. Repeat calibration after
one hour to achieve greatest accuracy.
Changing the Probe Tip
The probe tip is replaceable and is locked with a union nut. The union nut seals
against contact with moisture. If you are not sure about changing the probe tip
then we recommend that you send it to an authorized service center.
To change the probe tip do the following steps:
1. Turn off the instrument.
2. Loosen the safety nut with the appropriate tool (P/N 598-147) or with a 10 mm
wrench.
3. Remove the tip by hand. The o-ring creates some friction.
4. Remove the sensor by drawing it straight out.
5. Mount a new sensor. Make sure it is in correct position.
6. Observe the contact area between the probe pipe and the sensor. They should
contact each other.
7. Mount the union nut.
8. Tighten with a suitable tool.
8.13 Probe Control Port
The Sensistor ISH2000 is equipped with a parallel Probe Control port. This Probe
control port can be used for controlling active probes, feeding status signals to a
supervising computer system, and for simple test fixture control.
Note: Battery operated model Sensistor ISH2000C does not have a Probe Control Port .
Pin configuration for the different detector models is described under Model
Specific Specifications below.
See “Sensistor ISH2000 specifications” on page 43 for electrical specifications.
See “Status signal patterns” on page 31 for signal patterns.
CAUTION!
The Probe Control Port (25-pin D-type) on the
back of the instrument is not a computer or
printer port. Connecting a printer or any other
computer device may cause permanent damage
to the connected device.