# XNP-6371RHG # Lime # water stain # foreign substances
1. Installation case
- Purpose : Installed outdoor PTZ camera for dam water gate monitoring
- Environment
. Installed to a distance close enough to get waterdrops when gates are open
. In order to secure whole scene of the dam, the camera was installed as tilted
2. Symptom
- Foreign substances stuck on the lens surface
- Wiping off with smooth clothing does not improve the symptom
[Symptom]
3. Cause
- Unsuitable model selection(Non Wiper PTZ) and installation status(Tilted angle), it should have
been more careful in terms or installation environment
4. Measures
- Wiper PTZ is recommended for the environment where might have waterdrop interference
- If the camera is not a wiper PTZ, periodic lens cleaning is required, and if foreign substances are
adsorbed, cover replacement is recommended
※ The use of chemicals such as lime remover and stain remover can damage the anti-reflection (AR)
coating on the lens
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