Appendix B – Accessories: Mechanical wiper
OTT ecoN UV nitrate sensors with path lengths (measuring ranges) of 1, 2, 5 and
10 mm can be equipped with an optional mechanical wiper (see "Accessories")
for cleaning the optical path.
Depending on the path length, a corresponding wiper shaft and a wiper blade
are required (see "Spare parts/consumables").
The wiping operation (duration: approx. 2 ... 3 seconds) is started by connecting
the supply voltage. This causes a wiper blade fitted with several rubber lips to
rotate twice through the optical path and remove any deposits on the measuring
windows of the OTT ecoN. The wiper blade then moves to a park position outside
the optical path. To start another wiping operation, the supply voltage must be
disconnected for at least 1 second.
The mechanical wiper is installed by fitting and screwing two housing sections
onto the OTT ecoN housing tube.
The mechanical wiper has a separate, permanently installed connecting cable with
M8 industrial connector; length: 10 metres. To connect to the supply voltage, a
corresponding connecting cable (length: 1.5 metres) with open ends and M8 sock-
et is available (see "Accessories").
Fig. B1: Mechanical wiper, installed on
housing tube of OTT ecoN UV nitrate sensor.
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