Fundamentals
Determination of cleaning intervals
Objectives of a demand and condition orientated cl...
Determination of cleaning intervals
Special methods for measuring the deposit amounts (2)
Culvert pressure unit
A special development in the measurement of deposit amounts is the culvert pressure unit. The device uses two pressure sensors connected to an electronic data acquisition system to collect pressure data at two points within the pipe. The data storage unit is located in a watertight plastic capsule that is pulled through the sewer section.
Image:
Culvert pressure unit [Source: visaplan GmbH]
As shown in the figure, one sensor is located in the capsule and measures the pressure h2, while the second sensor is dragged over the deposits and measures the water pressure h1. The difference in the pressure values between the two sensors is used to determine the height of the deposits.
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