11 Maintenance and cleaning
PIOX R721 11.1 Maintenance
61
UMPIOX_F72xV1-3EN, 2021-09-01
11.1 Maintenance
The transmitter and the sensor are practically maintenance-free. In order to ensure security, the following maintenance
intervals are recommended:
11.2 Cleaning
Generally, the regular process cleaning and rinsing cycles are sufficient to keep the optical surfaces of the measuring
prism or window clean. However, depending on the nature of the measured liquid, it can be necessary to clean the
measuring prism or window regularly to avoid the formation of deposits.
For manual cleaning the sensor is dismounted and cleaned with a cloth, see Fig. 11.1.
Tab. 11.1: Recommended maintenance intervals
item maintenance step interval measure
transmitter • visual inspection for
corrosion, damages and
contamination
annually or more frequently,
depending on the ambient
conditions
cleaning
• firmware check for updates annually update, if necessary
• functional test annually reading of measured and
diagnostic values
sensor • dismounting and visual
inspection of the O-rings and
measurement optics for
corrosion, damages and
contamination
annually or more frequently,
depending on the ambient
conditions
cleaning, change the O-rings,
if necessary
• functional test annually reading of measured and
diagnostic values
Important!
Do not use aluminous abrasives when cleaning the measuring prism and window.
Notice!
When using aggressive detergents observe the chemical resistance of the corresponding parts.
Fig. 11.1: Cleaning of measuring prism and window
window
measuring prism
measuring prism
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