NEP-9500 MANUAL V1.01
Observator Instruments V1.01
Copyright 2017
©
Page 20
10.
MAINTENANCE
The new generation family of sensors can be fully configured and calibration using pc calibration
software and calibration communication hardware. For more information, please refer to the
analogue option of the NEP-5000 manual.
Wiper replacement
Note: This applies to the NEP-9500 versions only.
1. The effectiveness of the wiper in maintaining a clean optical surface will eventually be
compromised, the time being dependent on the water under investigation and the number of
wiping cycles carried out. We recommend periodic inspection of the wiper pad to determine
if the material is deteriorating or is impregnated with material from bio-fouling. Normally the
wiper should be replaced every 4 to 6 weeks of deployment. In addition, as a precaution we
recommend changing the wiper prior each deployment. The wiper is a consumable item and
a spare is provided with each NEP-9500 series probe along with a hex key to loosen and
fasten the wiper set screw. Wiper packs containing four wipers and a hex key are available
(Part Number NEP-9WIPE) as a standard accessory.
2. It is strongly recommended that the wiper be replaced prior to a new deployment. After a
deployment, the wiper pad may dry out and the collected material adheres to the probe face.
Operating the wiper under such conditions could then damage the internal mechanics. Such
damage is not covered under warranty.
