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Vibrating Wire Strain Gauges for Bridge, Tunnel & Dam Monitoring: Complete Selection Guide
The global construction industry is experiencing a massive surge in large-scale infrastr...
Data Loggers that Handle the Field
Data Loggers
Monitoring soil movement or structural stress means your equipment has to work where conditions aren't ideal. Kingmach data loggers are built for that. We've been supplying geotechnical instruments for years, and the loggers reflect what we've learned from sites around the world: they need to be simple to connect, dependable across temperature swings, and compatible with a range of sensor types. Instead of listing features, here's what you can expect: a logger that doesn't stop recording when the temperature drops below freezing, a setup that takes minutes rather than hours, and data you can retrieve without trekking through mud with a laptop. We offer models with different channel counts and storage capacities, so you're not paying for more than you need. Custom firmware or special connector requests? We handle those too, often without long lead times.
Technical Detail
Configured around process stability, mold life, and long-term uptime.
Our data loggers cover the middle ground where budget meets reliability. They record from common geotechnical sensors—vibrating wire, strain gauges, thermistors, and 4–20 mA transmitters. Channel counts range from 4 to 32, with options for single-ended or differential inputs, which matters when you're running long cables in noisy environments. Sampling rates are configurable down to one second per channel, and memory holds millions of timestamped data points, so you can leave a site unattended for months. Power consumption is low; a single lithium battery pack typically lasts a full season. For compatibility, we test with sensors from all major manufacturers. The loggers output MODBUS RTU over RS-485, and we have SDI-12 variants for environmental work. If your network uses wireless, we integrate with 4G and LoRa modules, handling the protocol mapping so your SCADA reads directly. The aluminum enclosure carries an IP65 rating—dust-tight and protected against rain. Mounting flanges fit standard DIN rails or wall brackets. We provide software that plots trends and lets you export CSV, but we also document the communication protocol fully, so you can write your own interface. For projects that need something non-standard, our engineers can tweak the input conditioning or add a custom splash screen. This is practical gear, not laboratory silverware.
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Products
Production modules
Wireless Data Logger (low power consumption design) JMWX-5RTU
Wireless Data Logger (low power consumption design) JMWX-5RTU
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FAQ
Common technical questions
What's the real difference between 16-bit and 24-bit ADC in a data logger?
It shows up in small signal measurements. A 16-bit ADC gives you about 65,000 counts over the input range; a 24-bit pushes that past 16 million. In practice, with a vibrating wire sensor, 16-bit is fine for crack width monitoring, but 24-bit helps when you're looking for micro-strain changes in concrete. Our 24-bit models also use oversampling internally to filter out 50/60Hz noise, so you don't need to add signal conditioners.
Can I log data from third-party sensors?
Yes. We test our loggers with Geokon, RST, and Soil Instruments sensors routinely. The input circuits have trimpots for adjusting gain and offset, and the software lets you set the calibration factors per channel. Match the sensor's excitation requirements and you're set. If you have an unusual sensor, send us the spec sheet and we'll confirm compatibility.
How do you handle data retrieval from remote sites?
The logger stores data locally first. You can collect it via USB when visiting, or add a 4G/LoRa module for scheduled pushes. We support MQTT and FTP uploads. Configuration and data collection are entirely scriptable, so if you have your own data management system, you can integrate without our middleware. Cellular options work with roaming SIMs, which matters for border-area projects.
What does 'IP65 rated' actually mean for a field logger?
It means the enclosure passed tests with water jets and dust. In field terms, you can mount it outdoors without an extra shelter, as long as it's not submerged. The cable glands are sized for 5–9mm sensor cables, and we include blanking plugs for unused ports. Still, we recommend avoiding direct sun on the enclosure in hot climates—a simple sun shield improves internal temperature stability.
Do I need your software to work with these loggers?
No. The protocol is open; we provide a MODBUS map document. You can poll the logger directly from LabVIEW or Python. Our Windows software is free and handles firmware updates, but you're not locked in. For system integrators, we maintain a command set that covers all operations, including scheduled triggers and alarm thresholds.
Need a solution for your project?
Share your product type, target capacity, and application requirements. Our team can review the details and recommend a practical next step.