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biaxial tiltmeter
The JMZX-7100L sliding inclinometer is a field profiling instrument within the Kingmach biaxial tiltmeter group. It is used for measuring horizontal displacement changes inside soil masses in dams, building foundations, embankment slopes, underground construction projects, geotechnical slopes, and port engineering. The instrument combines a sliding inclinometer probe with a 3D-MEMS silicon capacitor biaxial inclinometer sensor and an integrated testing instrument. It supports mobile phone APP reading, Bluetooth transmission, large storage capacity for millions of readings, data download for numerical and graphical analysis, real-time wireless network sending, Chinese and English menus, and dedicated post-processing software. Published specifications include +/-90 degrees sensor range, 500 mm guide wheel spacing reference, a probe size of 26 mm by 776 mm, 8.5 kg total weight, 2 kg probe weight, -20 degrees Celsius to +60 degrees Celsius operation, 180 m water pressure impermeability, and 100 g vibration resistance.
Application of biaxial tiltmeter
Tunnel projects use biaxial tiltmeter to observe lining deformation, invert response, station box movement, shaft walls, and surrounding ground behavior. Fixed tiltmeters can be installed on structural surfaces, while in-place inclinometer systems can measure internal movement near excavation zones or adjacent slopes. JMQJ-7315ADS has IP68 protection and RS485 output, making it suitable for wet underground environments when the cable route and cabinet are protected. JMQJ-7315RTU may be useful where wireless transmission is practical. Data review should include excavation stage, support closure, groundwater, vibration, train operation, displacement readings, and crack records. The installation file should show chainage, ring number, side, axis direction, and photographs because many tunnel points look similar after construction finishes.
The future of biaxial tiltmeter
Manual and automated methods will continue to coexist in future biaxial tiltmeter programs. JMZX-7100L supports APP reading, Bluetooth transmission, large storage, data download, and post-processing software for sliding inclinometer surveys. Fixed products such as JMQJ-7315ADS and JMQJ-7315RTU support automated structural tilt monitoring. In practice, a site may need both. Automated sensors can watch key points continuously, while manual inclinometer profiling can confirm deeper deformation at scheduled intervals. Future monitoring plans should define how manual profiles and automated curves are compared, who reviews differences, and how field notes are stored. This mixed approach is useful in slopes, ports, foundation pits, dams, and underground works where access and risk change over time.
Care & Maintenance of biaxial tiltmeter
Temperature and environment checks help maintain biaxial tiltmeter accuracy. JMQJ-7315ADS operates from -30 degrees Celsius to +80 degrees Celsius, JMQJ-7315RTU from -10 degrees Celsius to +55 degrees Celsius, and JMQJ-7915ATS from -30 degrees Celsius to +70 degrees Celsius. Temperature drift, condensation, direct sunlight, ice, and cabinet heat can affect readings or communication hardware. Maintenance records should note weather, enclosure condition, ventilation, shading, and nearby heat sources. If a tilt curve moves with daily temperature, compare it with structural temperature and other sensors before treating it as deformation. Environmental review does not weaken the warning; it makes the warning more credible by filtering out explainable operating effects.
Kingmach biaxial tiltmeter
Kingmach biaxial tiltmeter help engineers measure angular change in structures and ground where visual inspection cannot show early deformation. A small tilt in a bridge pier, retaining wall, building column, railway structure, or slope borehole can indicate load change, foundation movement, lateral soil pressure, or hidden internal displacement. Kingmach products use MEMS sensing, digital communication, sealed housings, and automated acquisition paths to support long-term monitoring. Fixed sensors such as JMQJ-7315ADS can measure biaxial tilt relative to the horizontal plane, while vertical in-place inclinometer systems observe multi-point deformation inside boreholes. The value of tilt monitoring is not only the angle value; it is the way repeated readings show rate, direction, and timing. When the baseline, location, axis direction, and structural event are recorded clearly, tilt data becomes a practical warning layer for civil works.
FAQ
Q: How should biaxial tiltmeter be installed?
A: The mounting surface or borehole position should be stable, the axis direction must be recorded, and the baseline should be saved after the instrument settles.Q: Why is axis direction important?
A: Tilt values only have engineering meaning when the positive and negative directions are tied to the structure, slope, tunnel, or borehole drawing.Q: Can these instruments work in wet sites?
A: Several Kingmach models list IP65, IP67, or IP68 protection, but glands, connectors, cabinets, and cable entries still need field inspection.Q: What should be checked during commissioning?
A: Check model, range, serial number, communication, power, baseline, point name, mounting photo, channel address, and related site condition.Q: Can a tiltmeter be reset after installation?
A: It can be re-baselined when necessary, but the old value, new value, reason, date, and technician should remain visible in the record.
Reviews
Robert Taylor
The weir flow meter is well-built and delivers accurate measurements. Great value for water management applications.
Daniel Brown
Excellent environmental monitoring sensors. The data is consistent, and the system integrates smoothly with our existing setup.
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