The 101D Water Level DrawDown Meter uses a corrosion resistant stainless steel probe connected to clearly marked flat tape, fitted on a well-designed reel. It is powered by a standard 9 volt battery.
In water level mode, when the zero point on the probe enters water, an electronic circuit is completed, activating the buzzer and light. The depth to water is then read off the tape. 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 water level and drawdown modes. The on/off sensitivity control allows the buzzer to be turned down in cascading water and ensures a clear signal in high and low conductivity conditions.
The 101D uses the same probe as the 101 P7 Water Level Meter, which is submersible up to 1000 ft. (300 m). The sensor at the tip of the probe provides consistent measurements with almost zero displacement. A protective shroud is included on the probe. The tape seal plug design allows the probe to be quickly and easily replaced if required.
An optional carry case is available to purchase separately.
Manufactured by: Solinst
Model: 101D Water Level DrawDown Meter
Measuring depth to water in wells, boreholes, standpipes and tanks
Monitoring drawdown during:
Pumping, slug, hydraulic conductivity, step and other aquifer/well tests
Low flow groundwater sampling
Well development and purging
|Operating temperature of reel:
|-20°C to +50°C
|Submerged operating temperature (tape/probe):
|-20°C to +80°C
|Wetted materials (tape/probe):
|PVDF, Santoprene, Delrin, Viton, 316 stainless steel
|Probe pressure rating:
|Submersible to 1000 ft. (300 m)
|~4.5 ounces (128 g)
|5/8" dia., 5.38" long (16 mm x 137 mm)
|Reel IP rating:
|IP64 (dust and splash proof)
The P7 probe is pressure rated and can be entirely submerged up to 300m, so can be used to measure total well depth. The zero point on this probe is very near to the probe tip and therefore has near to zero displacement.
The P7 probe connects promptly to the Tape seal plug of the Solinst PVDF Laser Marked flat tape used and, if required, the tape seal plug can be replaced with ease.
The P2 probe is used for tagging the water level and therefore should ideally not be submerged, but has a shielded design to significantly reduce false readings in descending water. The zero point is near the middle of the probe so more displacement may occur.
The P2 probe is permanently installed onto the heat embossed high quality polyethylene tape.
Both use a flat tape which come with markings every millimetre or 1/1000 ft and have a thick dog-bone design to deter from attachment to wet surfaces.