User Manual

output August 19, 2019 8:28 Page 10
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Light indication Explanation
Green, 1 per 4 sec Sensor is operating normally
Green, 1 per sec Calibration cap mounted
Green, 3 per sec Gas signal detected
Green and red, 1 per sec Minimum calibration
Green and red, 2 per sec Full calibration. Close and take off cap
Green, 15 times Calibration succeeded
Red, 15 times Calibration failed
2. Connect the gas bottle to the calibration cap with the sup-
plied flow regulator and gas tube
3. Mount the calibration cap on the sensor and make sure to
align the arrow of the calibration cap with the position of
the indicator light (this activates the magnetic switch in the
sensor). Thereby the calibration mode in the sensor is acti-
vated and the light indicator now switches to green flashes
with one flash every second (medium blinking)
4. Open the flow regulator on the gas bottle to allow H
2
S gas
to reach the sensor. After a short time the light indicator
should switch to green flashes at 3 flashes every second
(fast blinking)
5. After approximately 3 minutes a minimum calibration has
been achieved and the calibration procedure can be termi-
nated. This is indicated by an alternating green and red light
signal with one flash every second. If time allows we recom-
mend to continue the calibration until a full calibration has
been completed (see below)
6. A few minutes after the minimum calibration the flashing
rate switches to faster alternations between red and green
light at 2 flashes per second. This indicates that a full cali-
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