4
7. Use
After the device is switched on a quick test of the LED segments (basic initialisation) will be carried out and the cur-
rent battery status will be displayed for approx. 1.5 seconds.
The battery level will be displayed by means of the LED segments. For instance if the segment in the middle glows
the battery is half full/half empty.
Right after switching-on the warm-up phase for the sensors starts. The warm-up period should always take place
within an area of “clean air”, i.e. not on the designated place of measuring. The length of the warm-up phase depends
on the condition of the sensors. The longer the GSP1 was not in use, the longer takes the warm-up phase for the
sensors.
During the warm-up phase the graphical LED-Indicator goes back steadily. As soon as no more than one LED-
segment is glowing measuring can be started.
Leaks can be detected in a qualitative way if the sensor is moved along the places where they are assumed to be.
The measured concentration can be read of the graphical LED-Indicator. If the display has reached its highest status
there is a constant beep as acoustic alert.
During active measuring the battery status can be displayed by a short press (approx. 1.5 sec.) of the ON/OFF-
button.
Residues of gas, humidity and surrounding temperature can influence the zero point. The zero point can be corrected
manually. In order to do so the CAL-button has to be pressed for about a second. The new zero point remains as
long until the device is either switched off or a new zero point calibration is carried out.
The device switches off automatically if no button is pressed for more than 5 minutes or if no gas concentration above
80 ppm is measured during this period.
Directly before the device switches off there is an acoustic alert (approx. 5 sec.). If any button is pressed during this
period the device continues working until the next auto-off period.
If there is no sufficient voltage anymore the LowBatt-LED starts to blink. The device will eventually switch off without
any further warnings.
