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deep settlement gauge
Kingmach deep settlement gauge also cover the JMQJ-62XXADT micro range hydrostatic level sensor, a compact instrument for small vertical deformation where fine reading stability matters more than large travel. The product page lists 50 mm and 100 mm ranges, 0.01 mm resolution, 0.5%FS accuracy, RS485 digital signal, DC 9V to 24V power, power consumption below 0.4W, IP68 protection, about 4.5 kg weight, temperature drift of plus or minus 0.001 mm per degree Celsius, and annual stability of plus or minus 0.1%FS. Typical sites include tunnels, subgrades, dams, bridges, slopes, and building foundations. Because the measuring span is small, installation quality has a strong effect on the usefulness of the readings. The installer should keep the mounting surface firm, shield the cable gland from standing water, protect the pipe connection, and label each sensor before cabinet wiring. Acceptance should include zero confirmation, response comparison between nearby locations, enclosure inspection, and a saved baseline table. For wet galleries, buried sections, or tunnel invert areas, the IP68 enclosure and low power demand help the instrument remain practical when access is limited. This model fits monitoring programs where gradual millimeter-scale movement must be recorded through long wet or buried service conditions.
Application of deep settlement gauge
Pile foundations, dykes, and embankments use deep settlement gauge to verify vertical response during loading, filling, or long-term service. Kingmach JMDL-47XXAT is described for pile foundation settlement, dyke compression deformation, embankment heave, roadbed settlement, and base uplift in deep foundation pits. Its assembly includes a settlement plate, electrical displacement sensor, measuring rod with metal flexible conduit, anchor head, extension rod, and bottom anchor head. Published range options are 100 mm, 200 mm, 300 mm, and 400 mm, with gauge lengths from 760 mm to 2210 mm. Because the sensor is embedded, the installation record is almost as important as the reading itself. Crews should document depth, plate position, rod connection, cable exit, protection method, and nearby fill material before the location is covered. During loading, the curve can be checked against fill height, pile test stage, water condition, and surface survey marks. The side-exit cable arrangement helps reduce interference during pavement compaction, which is useful when monitoring must continue as construction equipment passes over the area.
The future of deep settlement gauge
Data fusion will define the future role of deep settlement gauge in structural health monitoring. Settlement should be reviewed beside displacement, tilt, strain, load, pore pressure, rainfall, vibration, and water level data. For example, a subgrade settlement trend may be more meaningful when rainfall and traffic loading are visible. A foundation pit uplift reading may need groundwater and support force context. A bridge deflection reading may need temperature and bearing information. Kingmach settlement products can provide the vertical movement layer in this wider record. When different sensor types are reviewed together, warnings can be based on relationships rather than a single number. That helps engineers prioritize site checks and avoid overreacting to harmless movement or missing linked changes across several instruments. Future platforms should make these relationships easy to review without hiding the raw settlement readings.
Care & Maintenance of deep settlement gauge
Baseline control for deep settlement gauge is a continuing maintenance task. A zero value should be recorded only after plates, rods, anchors, hydrostatic tubes, reference sensors, magnetic rings, probes, cabinets, and power supply are stable. If the baseline is taken during active compaction, dewatering, grouting, traffic vibration, or support adjustment, every later value may be difficult to explain. Kingmach products can support manual or remote readings, but both methods need a clear starting point. Keep the baseline date, weather, water level, construction stage, operator, and instrument status in the file. If a point must be reset, keep the old value, the new value, and the reason for the change. Do not erase earlier trend data to make a curve look tidy. Future reviewers need to know when the measuring system changed, otherwise normal maintenance can be mistaken for real ground movement.
Kingmach deep settlement gauge
For procurement and technical selection, deep settlement gauge should be matched to expected movement scale, access, and monitoring method. A micro range hydrostatic sensor with 0.01 mm resolution is not the same tool as a wide-range differential pressure sensor covering up to 4000 mm, and neither replaces a magnetic ring gauge used for borehole layer readings. Kingmach's category includes JMDL-47XXAT, JMDL-62XXADT, JMQJ-62XXADT, JMYC-62XXAD, and JMCJ-1003/1005, each aimed at a different settlement task. Before ordering, engineers should define whether the point is embedded, connected by water tube, manually probed, remotely acquired, or compared with a reference sensor. The best specification starts with the field question, then selects the instrument. Procurement teams should therefore ask not only for range and accuracy, but also for installation method, reading method, protection level, and data handover format. Procurement teams should therefore ask not only for range and accuracy, but also for installation method, reading method, protection level, and data handover format.
FAQ
Q: What does JMDL-47XXAT measure?
A: It measures in-situ subgrade settlement, embankment heave, foundation pit base uplift, tunnel bottom uplift, dyke compression, and pile foundation settlement.
Q: What ranges are listed for JMDL-47XXAT?
A: The listed ranges are 100 mm, 200 mm, 300 mm, and 400 mm, with 0.01 mm resolution on the 100 and 200 mm models and 0.1 mm on larger models.
Q: How is the gauge installed?
A: It uses a settlement plate, electrical displacement sensor, measuring rod, metal flexible conduit, anchor head, extension rod, and bottom anchor head.
Q: Can traffic operation continue during monitoring?
A: The side-exit cable routing is designed to avoid interference with pavement compaction and can support monitoring during traffic operation when installed correctly.
Q: What should be recorded during installation?
A: Record plate position, anchor depth, extension length, cable route, baseline, model, range, and construction stage.
Reviews
Michael Anderson
The strain gauges and load cells are extremely accurate and stable. They performed very well in our bridge monitoring project. Highly recommended!
David Wilson
We purchased displacement transducers and settlement sensors, and the quality exceeded our expectations. Easy installation and reliable performance.
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