DIPMETER water level, up to 50m
Valid Article
OC subscriptions: included in supply or field order tools (e.g. UniField)
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SC subscriptions: included in supply or field tools
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OC validations: approved for procurement and use by an OC for international or local orders specifying context and activity in Medical Standard Lists (MSL)
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DIPMETER water level, up to 50m
Form
Dipmeter water level, sounding apparatus made of a 50 meters.
The dipper comprises a stainless-steel probe fitted to a flexible graduated cable which is wound on a hand reel. The cable contains a transistorised switched circuit acting as a sensor. Audio and visual indicators and a battery are fixed on the housing of the reel. The sensor probe incorporates an insulating gap which acts as a switch, the circuit being completed when contact is made with the water.
Other name: Water level meter.
Fit
Often used together with a flow meter during pumping tests or for monitoring of wells.
Function
Used to check/determine the static and dynamic water levels inside boreholes and wells during pumping tests and monitoring.
When tape is lowered down a borehole and the sensor on the tip of the tape makes contact with water a buzzer sounds and an LED light in the reel comes on. A reading can then be taken from the tape at the top of the borehole to indicate the water depth.
Regardless if conducting a pumping test or monitor wells: do make sure to record all readings so they are available for further analysis and/or reference.
If dipper is not used: store it in a dry area, remove the battery and add info that battery is needed and should be replaced if dipper is in use again. Do not stretch the tape as this would result in incorrect readings.
Please refer also to Public health engineering in Precarious situations, 2nd edition, MSF 2010, TB 2.27 on the use of a dipper and on pumping tests
Local purchase: please do ask advise from your WatSan advisor.