EN
ar
bg
hr
cs
da
nl
fi
fr
de
el
hi
it
ko
no
pl
pt
ro
ru
es
sv
tl
iw
id
lv
lt
sr
sk
sl
uk
vi
et
hu
th
tr
fa
ms
hy
ka
ur
bn
mn
ta
kk
uz
ku
Deflectometer
Kingmach Deflectometer include the JMDL-47XXAT smart single-point settlement gauge for buried positions where a defined vertical movement must be followed through construction. It is used for subgrade settlement, embankment heave, base uplift in deep foundation pits, tunnel bottom uplift, dyke compression deformation, and pile foundation settlement. Published range options are 100 mm, 200 mm, 300 mm, and 400 mm. Resolution is 0.01 mm on 100 mm and 200 mm models, and 0.1 mm on 300 mm and 400 mm models. Gauge lengths cover 760 mm, 1240 mm, 1720 mm, and 2210 mm. The assembly includes a settlement plate, electrical displacement sensor, measuring rod with metal flexible conduit, anchor head, extension rod, and bottom anchor head. Its side-exit cable design helps reduce interference during pavement compaction. The product is strongest when the installation depth, plate location, cable route, fill layer, and first stable reading are documented before the buried parts disappear under later work.
Application of Deflectometer
Tunnels and subway structures place special demands on Deflectometer because access is narrow, moisture is common, vibration is continuous, and many instruments may share the same station or section. Kingmach JMDL-47XXAT is described for tunnel bottom uplift deformation and underground engineering settlement, making it suitable for embedded positions where the invert or base layer must be followed after construction. JMQJ-62XXADT can support hydrostatic level observation in tunnel settlement projects, with 50 mm and 100 mm ranges, 0.01 mm resolution, RS485 output, and IP68 protection. A tunnel layout should use point names that match chainage, ring number, track side, or station grid, otherwise later interpretation becomes slow and error-prone. Readings should be compared with excavation progress, lining closure, groundwater drawdown, rail bed work, train operation, and vibration records. The important question is whether vertical change is a short construction response, a reversible operating effect, or a continuing deformation trend. Good installation photos and baseline notes are especially useful because many embedded parts cannot be checked after the tunnel returns to service.
The future of Deflectometer
Remote infrastructure will shape the future of Deflectometer. Many settlement points sit along long railways, expressways, dams, embankments, slopes, and tunnel portals where routine manual reading is expensive and sometimes unsafe. Low-power acquisition, wireless gateways, solar power, and clear cabinet layouts can reduce unnecessary visits while keeping settlement trends visible. Kingmach hydrostatic sensors and settlement gauges that support remote data collection can fit this direction, especially when RS485 channels, power supply, and reference points are documented well. Remote monitoring should still include scheduled field checks, because tubes, probes, cables, and reference points can be affected by weather and construction. The best future setup will combine fewer emergency trips with better evidence for deciding when a site visit is truly needed. The practical goal is to keep settlement data understandable after the original installation crew has left, so owners can compare old and new readings without reconstructing the field history from memory. The same record should remain readable for designers, contractors, owners, and maintenance teams, because settlement monitoring often continues long after the first construction report is finished.
Care & Maintenance of Deflectometer
Remote acquisition for Deflectometer needs commissioning checks across the whole data chain. Verify RS485 wiring, bus address, power supply, channel name, units, reference point, and platform display before routine collection begins. For Kingmach hydrostatic sensors and automated settlement systems, move through each channel and confirm that the displayed point matches the physical location. Label cabinets, cables, tubes, and sensor numbers clearly. During operation, data gaps should be compared with power outages, communication faults, storms, cabinet work, or platform changes. If a sensor is replaced, record the old serial number, new serial number, old baseline, new baseline, and reason for replacement. Remote data is only trustworthy when the physical point and digital channel stay aligned. The record should include who inspected the point, what changed on site, and whether nearby instruments showed the same trend, so the maintenance team can separate sensor trouble from real settlement. The record should include who inspected the point, what changed on site, and whether nearby instruments showed the same trend, so the maintenance team can separate sensor trouble from real settlement.
Kingmach Deflectometer
Hydrostatic Deflectometer 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 are Deflectometer used for?
A: They measure vertical deformation such as foundation settlement, subgrade settlement, embankment heave, tunnel bottom uplift, dam settlement, bridge deflection, and building settlement.
Q: Which Kingmach models are related to this group?
A: Common models include JMDL-47XXAT, JMDL-62XXAT/ADT, JMQJ-62XXADT, JMYC-62XXAD, and JMCJ-1003/1005.
Q: What is the difference between single-point and hydrostatic monitoring?
A: Single-point gauges measure settlement at a specific embedded point, while hydrostatic systems compare several points against a reference level through connected liquid paths.
Q: Can the readings be collected remotely?
A: Yes. Several Kingmach hydrostatic and settlement instruments support RS485 output or automatic acquisition systems for remote collection.
Q: Why is the reference point important?
A: Settlement is often calculated relative to a reference. If the reference changes or is poorly documented, the whole settlement curve can become misleading.
Reviews
Joshua Clark
We ordered a full monitoring solution including sensors and data loggers. Everything works seamlessly together. Great supplier!
James Thompson
The tiltmeters and accelerometers are very sensitive and provide precise data. Perfect for our structural health monitoring system.
Latest Inquiries
To protect the privacy of our buyers, only public service email domains like Gmail, Yahoo, and MSN will be displayed. Additionally, only a limited portion of the inquiry content will be shown.
Ava***@gmail.comAustralia
Hi, I am looking for reliable tiltmeters and accelerometers for structural health monitoring. Please...
Amelia***@gmail.comSingapore
Hello, I am looking for visualization software for monitoring system data analysis. Please let me kn...
Related product categories
- hydrostatic liquid level sensor
- hydrostatic pressure level sensor
- hydrostatic pressure sensor level measurement
- hydrostatic level sensor principle
- hydrostatic level sensors
- hydrostatic pressure level sensors
- Wide-Range Differential Pressure Hydrostatic Level Sensor
- Inductive Frequency-Modulated Hydrostatic Level Sensor
- water level gauge
- water gauge water level gauge
- water gauge level
- gauge water level