10
User Manual EE072 Humidity and Temperature Probe with Modbus RTU
6 Maintenance and Service
EE072 does not require any special maintenance, nevertheless for high accurate measurements espe-
cially over wide RH and T ranges it is recommended to calibrate the probe every 12 months. If needed,
the enclosure may be cleaned and the device may be re-adjusted as described below.
6.1 Cleaning
Use a damp soft cloth to remove deposits of dust or dirt from the exterior of the probe. Do not use any
solvents or abrasive cleaning agents.
In case of dusty, oily and polluted environment:
• Use a damp soft cloth to remove deposits of dust or dirt from the exterior of the probe. Do not use any
solvents or abrasive cleaning agents.
• The filter cap shall be replaced once in a while with an E+E original one (see below).
• If needed, the sensing element of the humidity probe can be cleaned by the user (see cleaning inst-
ruction -
www.epluse.com/cleaning-instructions
)
6.2 Filter cap replacement
In a dusty or polluted environment it might be necessary to replace the filter cap once in a while. In most
of the cases, a clogged filter shows visible contamination or dirt. Longer response time of the humidity
measurement also indicates a clogged filter cap. In such cases, replace the filter by a new, original one,
Procedure
• Turn the filter cap counter-clockwise for removing it.
• Install the new filter cap finger tight by turning it clockwise.
While replacing the filter cap take very good care to not touch or rub the sensing element.
6.3 Protection during site cleaning operations
During site cleaning or sterilization process, if the EE072 remains on the measuring site the sensing
head can be protected with the optional protection cap for 12 mm
(0.47“)
probe (HA010783, see datas-
heet “Accessories”).
In case the probe is removed from the site, it is recommended to apply the protection cap for the M12
cable socket (HA010781) and the one for the EE072 M12 plug of (HA010782).
Fig. 6
Protection cap for
Ø12 mm
(0.47”)
probe
(ordering code
HA010783)
Fig. 7
Protection cap
M12
female connector
(
ordering code
HA010781)
Fig. 8
Protection cap
M12
female connector
(
ordering code
HA010782)