Features:
- Measuring depth to water in wells, boreholes, standpipes and tanks
- Low flow groundwater sampling
- Well development and purging
- Dewatering applications
- Pumping, slug, hydraulic conductivity, step and other aquifer/well tests
The 101D Water Level DrawDown Meter uses the same ergonomic reel, laser-marked flat tape, durable electronics and probe as the 101 P7 Water Level Meter, but has the added feature of a drawdown mode.
A simple toggle switches between static water level and drawdown measurements. Water level mode allows accurate depth to water measurements; the drawdown is used to monitor falling hydraulic head.
In water level mode, when the zero point on the probe enters water, an electronic circuit is completed, activating the buzzer and light. In drawdown mode, the circuit is reversed-the buzzer and light are triggered when the probe is in air.
The battery test button can check the circuit in both modes. The electronics are powered by a 9V battery.
The 101D uses the P7 Probe, which is submersible the full length of the tape.
