UNISENSE SULFILOGGER User Manual page 15

table on page 13 for more details on the ordering of calibration
equipment. Figure 2 shows how the calibration kit and gas bottle
is mounted on the SulfiLogger™ sensor. The reduction valve on
the gas bottle ensures that the correct flow of gas is exposed to
the sensor, and the valve should therefore be opened fully when a
calibration is ongoing.
Figure 2: Mounting of the calibration cap and gas bottle
Overview of light indications on the SulfiLogger™ sensor
The indicator light on the SulfiLogger™ sensor is constantly giving
a status of the sensor and can as such be used to check that the
sensor is on. Before calibration is initiated it is important to be
familiarized with the various status signals that the sensor uses as
indications and calls for operator actions. These are summarized
in the table below.
The calibration procedure of the SulfiLogger™ sensor consists of
the following steps:
1. Initially, check that the sensor is on and is in normal opera-
tion mode showing Green flashes on the indicator light with
one flash every 4 seconds. (slow blinking)
9