Application Notes
26
Hydromette
®
BL LG 17
4.2
Cleaning of the Sensor Head
A dusty or dirty sensor head can be blown off with compressed air
(do not impress hard pressure shocks!). If this procedure does not
help, the sensor head can be treated by immersion and rinsing in
alcohol (e.g. isopropanol) which dries without leaving residues. The
sensor is not ready for measurement again until after the alcohol
has completely dried.
Do not shake, knock or tap the wet sensor!
Never attempt to clean the sensor head with mechanical
influences of any kind. Any contact with the sensor element
recessed in the chamber head results in irreversible damage to
the sensor.
Do not use any abrasive cleaning agents, brushes or other
objects, fluffy cloths, etc. to clean the sensor head!
Unsuitable cleaning agents can deposit on the sensor element
and thus result in incorrect measurements or permanently
damage the sensor element.
If the chamber head gap of the sensor head is completely filled
with cleaning liquid, accelerate the drying process by blowing
out if necessary.
Alcohol (dries up residue-free) and hydrogen peroxide are
permitted as disinfectants. If the sensor element is heavily wetted
with the cleaning liquid, the "contamination detection" of the sensor
can be activated. The sensor automatically returns to its normal
function after the sensor element has dried. Due to its capillarity,
the chamber head gap of the sensor head can be completely filled
with cleaning liquid. In this case, it can take
more than an hour
for
the liquid to evaporate and for the sensor to function properly
again. It is recommended to blow the measuring gap free with a
