10
WARNING
Do not remove the
seal and protective
plastic tube before
polarization has
been set correctly,
the sensor has been
pre-polarized as
described for each
type of sensor, and
calibration has
been successfully
completed
GETTING STARTED
u
npacking
a
new
sensor
When receiving a new microsensor remove the shock-absorbing
grey plastic net .
Do not remove the seal and protective tube
before the following steps are successfully completed.
P
olarization
The signal from the H
2
S sensor is generated in pA . Therefore, the
H
2
S sensor must be connected to a picoampere amplifier during
measurements .
IMPORTANT
: Wrong polarization may destroy the sensor!
Type I hydrogen sulfide sensors (label on the sensor shaft reads:
SULF-xxx-xxxxxx) should be polarised with +200 mV .
Type II hydrogen sulfide sensors (label on the sensor shaft reads:
H
2
S-xxx-xxxxxx) should be polarised with +85 mV .
Setting polarization on the amplifier
• Connect the sensor to a pA-channel .
Polarization is set to 0 mV when connecting
the LEMO plug . Note that when connecting
Type II sensors sold before 1 March 2018 the
correct polarization will automatically be set .
• Highlight Sensor for manual settings using
the arrow keys and press
S
elect
• Go to the Polarization line with the arrow
keys and press
S
elect
. Set the polarization
using the up or down arrow keys . The
selected polarization does not become active
until
S
elect
is pressed .
