The 101D Water Level DrawDown Meter is ideal for:
- Measuring depth to water in wells, boreholes, standpipes and tanks
- Monitoring drawdown during:
- 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 function 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.
| Standard Length Options: | ||
|---|---|---|
| Small Reel | 30 m | 100 ft. |
| 60 m | 200 ft. | |
| 100 m | 300 ft. | |
| Medium Reel | 150 m | 500 ft. |
| 250 m | 750 ft. | |
| 300 m | 1000 ft. | |
Lengths available to 1500 m (5000 ft.).
LM2: Feet and tenths: with markings every 1/100 ft.
LM3: Meters and centimeters: with markings every mm
