How to clean the pressure probe
Required equipment
▶
Brush with hard bristles
▶
Common household scale remover
▶
Clear water for rinsing the pressure probe
CAUTION Risk of injury to eyes and skin during maintenance works!
When cleaning the measuring cell, aggressive dirt particles and acidic scale
remover can get into the eyes/on the skin .
▶
Wear eye protection goggles during maintenance work!
▶
Wear suitable protective gloves during maintenance work!
▶
Observe the application and warning instructions of the scale remover used!
■
Uninstall OTT PLS 500 (see Chapter 5).
■
Remove the black protective cap.
■
Clean the measuring cell carefully using a brush (hard bristles). Lime scale
deposits can be removed using a common household scale remover.
■
Rinse the pressure probe
thoroughly
with clear water!
■
Reattach the black protective cap.
■
Reinstall OTT PLS 500 (see Chapter 5).
■
Determine measured value and compare to reference value (staff gauge, contact
gauge) and correct if necessary
1)
(enter reference or offset value or use the scal-
ing function of the connected data logger).
1)
for example, via interface converter
"
OTT USB/SDI-12 Adapter
"
in combination with the PC software
"
OTT SDI-12 Interface
"
; see Chapter 6
Black
protective cap
Pressure sensitive
measuring cell membrane
Pressure probe
OTT PLS 500
Fig. 10: Cleaning the pressure probe.
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