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Optical Deflection Monitor
The JMCJ-1003/1005 magnetic ring settlement water level gauge gives Kingmach Optical Deflection Monitor a manual borehole method for layered ground. It measures underground settlement by electromagnetic induction between the probe and magnetic rings, and it measures water level by conductivity when the probe contacts groundwater. The instrument uses a probe, reel, tape, battery, audible or visual indication, and magnetic rings placed at known depths. Published depth options include 30 m, 50 m, and 100 m, with plus or minus 1 mm accuracy, 9V battery power, maximum current of 50 mA, a probe about 17 cm long and 3 cm in diameter, and -20 degrees Celsius to 60 degrees Celsius operating environment. This product is useful where the engineer needs to know which soil layer compressed, not just how much the surface moved. A careful log should keep borehole number, ring depth, water depth, reference mark, operator, weather, and construction activity together for each visit.
Application of Optical Deflection Monitor
Layered soil, slope, and embankment projects often need Optical Deflection Monitor that can separate underground compression from groundwater variation. Kingmach JMCJ-1003/1005 magnetic ring settlement water level gauge serves that role through a probe, reel, measuring tape, magnetic rings, and water-level detection. Magnetic rings are placed at selected depths, and the probe gives audible and visual indication when it reaches a ring. Water level is detected by conductivity when the probe contacts water. Published options include 30 m, 50 m, and 100 m depths, plus or minus 1 mm accuracy, a 9V battery, and a probe about 17 cm long with 3 cm diameter. This manual instrument is useful when the engineering question is not just total surface settlement, but which soil layer is compressing. Field crews can compare ring depth, groundwater depth, rainfall, fill placement, cracks, retaining wall movement, and excavation activity. The resulting profile helps identify whether deformation is shallow, deep, water-related, or linked to a particular construction stage.
The future of Optical Deflection Monitor
Data fusion will define the future role of Optical Deflection Monitor 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 Optical Deflection Monitor
Manual-reading Optical Deflection Monitor should follow a repeatable procedure every visit. Use the same reference mark, reading direction, tape handling method, waiting time, and data sheet format. This is especially important for magnetic ring settlement gauges and borehole water level readings, where inconsistent field practice can create false changes. Record operator, weather, groundwater condition, borehole obstruction, battery condition, and any unusual sound or visual indication from the alert system. Do not round readings differently from one visit to the next. If manual data is later entered into software, keep the original field notes available for checking. Manual monitoring can be reliable over many years when the process is simple, dated, and boringly consistent. The goal is repeatability, not speed.
Kingmach Optical Deflection Monitor
Hydrostatic Optical Deflection Monitor are useful when several vertical movement points must be compared against a reference rather than read as isolated values. Kingmach JMDL-62XXADT and JMQJ-62XXADT use connected liquid paths and digital output to monitor vertical deformation in structures such as bridges, dams, tunnels, large buildings, and subgrades. The JMDL-62XXADT lists 50 mm, 100 mm, and 200 mm ranges with 0.01 mm resolution and RS485 output. The JMQJ-62XXADT micro range hydrostatic level sensor lists 50 mm and 100 mm ranges, 0.01 mm resolution, RS485 signal, and IP68 protection. These products are most useful when the tube route, reference point, cabinet, and baseline are documented clearly. If the reference is unstable, every curve downstream becomes harder to trust. A good point record also names the reference location, installation elevation, data channel, and maintenance access so later readings can be checked without guesswork. A good point record also names the reference location, installation elevation, data channel, and maintenance access so later readings can be checked without guesswork.
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
Matthew Garcia
Instrumentation cables are durable and perform well even in harsh environments. Will definitely order again.
Joshua Clark
We ordered a full monitoring solution including sensors and data loggers. Everything works seamlessly together. Great supplier!
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