Campbell Scientific Hydro-Wiper-C Operation Manual from Zebra-Tech User Manual
Page 5
Hydro-Wiper operation manual
Zebra-Tech Ltd
4
switched off. The optimal wipe interval will depend on environmental
conditions at the field site. Generally a wipe interval of 3 hours
should prove sufficient to keep the turbidity sensor clean in moderate
fouling conditions.
Wipe interval select
switch position
Wipe interval (minutes)
0 15
1 30
2 45
3 60
4 120
5 180
6 240
7 300
8 360
9 720
Table 1; Wipe interval select switch settings
Only good quality alkaline batteries should be used, such as
Energizer or Duracell.
The Hydro-Wiper wipe interval timer starts 0.5 seconds after the
power switch is turned on. The wipe interval is the time between the
start of one wipe, and the start of the next wipe.
To avoid the wiper from affecting the turbidity sensor measurements,
start the Hydro-Wiper out of sequence with the measurement
schedule. For example, if the turbidity sensor measurements are
scheduled every hour, then start the Hydro-Wiper at 30 minutes past
the hour.
When the Hydro-Wiper is switched on, the LED will blink every 15
seconds. Under normal operation, the LED will blink once. If a fault
condition exists, the LED will blink in a sequence as shown in the
table 2.