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tiltmeters
The JMQJ-7315ADS fixed tiltmeter is a key Kingmach tiltmeters product for biaxial structural tilt monitoring. It uses MEMS technology, a high-precision acceleration integrated chip, differential measurement principles, 16-bit AD sampling, RS485 digital communication, a unique electronic code, and lightning protection design. The product is used to observe inclination angle change and deformation of bridges, buildings, railways, and other structures relative to the horizontal plane, including hidden parts that are difficult to observe by conventional methods. Published specifications include +/-15 degrees dual-axis measuring range, 0.001 degree resolution, 0.01 degree accuracy, DC 9V to 24V supply, power consumption below 0.5W, RS485 digital output, -30 degrees Celsius to +80 degrees Celsius operating environment, 55 mm by 55 mm by 46 mm dimensions, IP68 protection, and 0.6 kg weight.
Application of tiltmeters
Port and underground construction projects use tiltmeters to follow soil movement, retaining structures, and deep displacement where surface survey alone is limited. JMZX-7100L is described for port engineering and underground construction projects, with Bluetooth communication, APP reading, large storage, and post-processing software. The sliding probe method is useful when engineers need a deformation profile along an inclinometer casing rather than one fixed surface angle. Field crews should keep casing ID, depth interval, probe orientation, reading direction, groundwater condition, and operator notes consistent. Data can then be compared with excavation, dredging, surcharge loading, pile work, or retaining wall movement. Good field discipline prevents a profile change from being confused with probe handling differences.
The future of tiltmeters
Manual and automated methods will continue to coexist in future tiltmeters 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 tiltmeters
Replacement of tiltmeters should preserve measurement continuity. When changing a fixed tiltmeter, integrated wireless unit, in-place string component, acquisition module, or sliding inclinometer accessory, record model, serial number, range, old reading, new reading, reason, date, technician, and any change to axis direction or channel name. Do not hide the replacement by forcing the new curve to look continuous without explanation. If a borehole string is reconfigured, update depth mapping and group communication records. If a wireless unit is replaced, check battery, antenna, and upload timing. A clear replacement record lets future engineers understand the curve and prevents maintenance work from being mistaken for structural deformation.
Kingmach tiltmeters
For automated monitoring, Kingmach tiltmeters can reduce the need for repeated manual survey work in hidden or hazardous locations. Fixed and integrated units can connect to acquisition systems, while in-place inclinometer strings can collect multi-depth data through an orifice module. JMQJ-7315RTU is designed for remote unattended automatic measurement using 4G wireless communication. JMQJ-7915ATS supports wired or wireless upload from the acquisition module, and its low-power mode activates sensors only during data measurement. These features matter where access is restricted by traffic, excavation, weather, or operating infrastructure. Automation does not remove the need for field checks, but it gives owners a continuous record that can be compared with rainfall, groundwater, blasting, train operation, loading, or nearby construction events.
FAQ
Q: How accurate is the JMQJ-7315ADS tiltmeter?
A: The product page lists 0.001 degree resolution and 0.01 degree accuracy for the +/-15 degree dual-axis model.Q: What protection grade does JMQJ-7315ADS have?
A: It is listed with IP68 waterproof protection and an operating environment from -30 degrees Celsius to +80 degrees Celsius.Q: What range does JMQJ-7315RTU provide?
A: The integrated wireless model lists +/-30 degree and +/-15 degree dual-axis range options, with 0.001 resolution.Q: How many sensors can JMZX-4QH support?
A: The module lists four channels and support for up to 100 sensors in a multi-point inclinometer system.Q: What is the guide wheel spacing for JMZX-7100L?
A: The sliding inclinometer page lists a 500 mm guide wheel spacing reference and a +/-90 degree sensor range.
Reviews
David Wilson
We purchased displacement transducers and settlement sensors, and the quality exceeded our expectations. Easy installation and reliable performance.
James Thompson
The tiltmeters and accelerometers are very sensitive and provide precise data. Perfect for our structural health monitoring system.
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