101 P7 Water Level Meter
Portable water level meter with a pressure-proof P7 probe and laser-marked PVDF flat tape for depth-to-water measurements.
- Sensor at the tip of the probe for consistent readings with almost zero displacement
- Permanent laser markings every 1/100 ft or millimetre on non-stretch PVDF tape
- Loud buzzer and light with an adjustable sensitivity dial
Overview
The Solinst Model 101 P7 Water Level Meter measures the depth to water in wells, boreholes, standpipes and tanks. It pairs a pressure-proof P7 probe, with its sensor at the tip, with a laser-marked PVDF flat tape on a stand-alone reel. When the probe reaches the water, a loud buzzer and a light activate, and the depth is read directly from the tape to 1/100 ft or each millimetre.
Typical applications
- Measuring depth to water in wells
- Measuring depth to water in boreholes
- Measuring depth to water in standpipes and tanks
- Groundwater monitoring in monitoring wells
- Measuring total well depth in ideal conditions
Key Features
- P7 probe with the sensor at the tip, for consistent measurements with almost zero displacement
- Probe fully submersible to the depth of all tape lengths, so total well depth can be measured in ideal conditions
- Permanent laser markings every 1/100 ft or millimetre, traceable to NIST and EU measurement standards
- Non-stretch PVDF tape with stainless steel and copper-coated steel strands in each conductor
- Thick dog-bone tape design prevents adherence to wet surfaces and lets the tape hang straight
- Sensitivity control adjusts to high or low conductivity and can turn the buzzer off in cascading water
- Tape seal plug design allows the probe to be replaced quickly and easily
- Stand-alone reel with carrying handle, probe holder, brake and a front battery drawer
- Tape guide supplied with each meter, for repeatable readings and to protect the tape
Benefits
- Sensor-at-the-Tip Design: The sensor is at the tip of the probe, giving consistent readings with almost zero displacement.
- Dual-Function Testing: Measures depth to water and, in ideal conditions, total well depth.
- Heavy-Duty Construction: Corrosion-proof stainless steel probe, fully submersible to the depth of all tape lengths.
- No-Cling Dog-Bone Profile: The thick dog-bone tape design prevents adherence to wet surfaces and lets the tape hang straight.
- Permanent Precision Markings: Laser markings every 1/100 ft or millimetre on the PVDF tape.
- Non-Stretch Structural Integrity: Stranded stainless steel and copper-coated steel conductors give the tape high tensile strength and electrical efficiency.
Specifications
MEASUREMENT |
|
Measures | Depth to water; total well depth in ideal conditions |
Marking resolution | Every 1/100 ft or every millimetre |
Zero measurement point | Near the tip of the P7 probe |
Indication | Buzzer and indicator light |
Sensitivity | Adjustable, on/off sensitivity dial |
P7 PROBE |
|
Size | 5/8" dia., 5.38" long |
Weight | ~4.5 oz (128 g) |
Wetted materials (tape/probe) | PVDF, Santoprene®, Delrin®, Viton®, 316 stainless steel |
Probe pressure rating | Fully submersible to depth of all tape lengths |
TAPE |
|
Tape | PVDF laser-marked flat tape, 3/8" (10 mm) wide |
Conductors | 13 strands of stainless steel and 6 strands of copper-coated steel in each tape conductor |
Tape lengths | 100 to 5000 ft |
REEL AND POWER |
|
Reel IP rating | IP64 (dust and splash proof) |
Operating temperature of reel | -20 °C to +50 °C |
Submerged operating temperature (tape/probe) | -20 °C to +80 °C |
Power | 9 V alkaline battery |
Controls | On/off sensitivity switch, light, buzzer, battery test button, brake |
Tape guide | Supplied with each meter; fits well casing 2" (50 mm) diameter or larger; measuring point offset 6 cm (2/10 ft) |
STANDARD REEL LENGTHS |
|
Small reel | 100 ft / 30 m |
Medium reel | 500 ft / 150 m |
Large reel | 1250 ft / 400 m |
X-Large reel | 1650 ft / 500 m |
ORDERING CODES |
|
LM2 | PVDF tape, feet and tenths, with markings every 1/100 ft |
LM3 | PVDF tape, meters and centimeters, with markings every mm |
Drawing

Downloads
| 101 Water Level Meter Family Datasheet (EN) | Download101 Water Level Meter Family Datasheet (EN) |
|---|---|
| 101 P7 Water Level Meter User Manual (EN) | Download101 P7 Water Level Meter User Manual (EN) |