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Wide-Range Smart Differential Pressure Water Level Meter
A differential pressure water level meter works by measuring the pressure difference between the liquid and the atmosphere. When you need to track water levels ranging from a few meters to tens of meters—or more—a wide-range sensor becomes essential. Kingmach’s take on this instrument includes built-in intelligence: digital signal processing, automatic temperature compensation, and the ability to talk to your data logger without fuss. It’s been used in groundwater wells, open channels, reservoirs, and dam seepage monitoring. The design focuses on keeping drift low over time and handling field conditions that aren’t always gentle. Rather than a one-size-fits-all box, the meter can be configured to the cable length, output protocol, and mechanical mounting your project demands. If you’re setting up a network of monitoring points, the smart communication helps cut down on wiring and manual readings.
Technical Detail
Kingmach builds instruments for geotechnical and environmental monitoring, and this differential pressure level meter fits into a larger lineup that includes piezometers, inclinometers, and data acquisition systems. Because many monitoring jobs need more than a single sensor, we keep the interface options flexible: 4-20 mA, RS-485, SDI-12, and others can be selected depending on what your central unit expects. The sensor element itself is chosen to stay stable over months and years, which matters when you’re looking at long-term groundwater trends or dam safety. Temperature effects are compensated digitally, so you don’t have to post-process for seasonal swings. For installations where the sensor sits submerged for long periods, the housing and cable materials are picked to resist corrosion and biofouling. Custom ranges are possible—if a standard 10 m or 20 m span doesn’t match your site, a wider or narrower version can be built without sacrificing resolution. We ship to projects around the world and provide technical backup through setup and beyond. If an existing logger or SCADA system needs a specific output scaling, that’s something we handle before the sensor leaves the factory.
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The range can vary from a few meters to over 100 meters of water column. Kingmach offers standard spans like 5 m, 10 m, 20 m, 50 m, and 100 m. Wider custom ranges are possible on request. We match the sensor to your site’s expected water level fluctuations.
Yes, the wetted parts are made of stainless steel (usually 316L) and the cable jacket is selected for chemical resistance. For highly aggressive media, we can discuss additional coating options. It’s commonly used in coastal aquifers and landfill monitoring wells.
The meter can be ordered with analog outputs (4-20 mA or 0-5 V) or digital interfaces (RS-485 with Modbus RTU, SDI-12). We configure the output before shipping. If your logger requires a specific register map or scaling, just let us know during ordering.
The sensor body diameter is typically around 16–22 mm, so it fits into most monitoring wells (ID 25 mm or larger). Check your casing inner diameter. If space is tight, we can recommend a slim version.
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Address: No. 188 Tongzipo West Rd, Changsha, Hunan, China