Products / Vibrating Wire Data Logger
The CA-VWLog-8 multi-channel data acquisition instrument (hereinafter referred to as the acquisition instrument) is an enhanced 8-channel vibrating wire data logger. Its main core uses a 32-bit ARM Cortex-M3 CPU chip with a very high cost-performance ratio in the industry, which both guarantees the timeliness of data acquisition and completeness of functions and takes into account the overall cost of the device itself. Thanks to its own architecture, the acquisition instrument is suitable for automatic acquisition of frequency and temperature from vibrating wire sensors, whether in a single unit or in a multi-unit network, or for acquiring data from RS485 bus type sensors using different function modules, allowing it to adapt to various complex working conditions.

It can be widely used for monitoring in engineering fields such as buildings and structures, excavations, bridges, metro, dams and slopes.
| Parameter | Value |
|---|---|
| Power supply | DC6-24 V(±10%)/50-100 mA |
| Communication method | RS485 / 4G China Mobile, China Unicom |
| Vibrating wire acquisition | Acquisition channels |
| Excitation method | Sweep excitation |
| Sweep range | 400-6000 Hz |
| Excitation voltage | 3 – 15 V |
| Acquisition resolution | 0.01 Hz |
| Acquisition accuracy | ±0.1 Hz |
| Temperature acquisition | Acquisition channels |
| Sensor type | 3K specification NTC / DS18B20 |
| Temperature measurement range | 40 °C – 150 °C/-50 °C – 120 °C |
| Temperature measurement resolution | 0.05 °C |
| Temperature measurement accuracy | ±0.25 °C |
| Data acquisition type | Vibrating wire type sensors |
| Storage | 3. 20,000 records |
| Number of channels | 8 |
| Communication protocol | Custom / Modbus-RTU |
| Sensor connection method | 2EDG 5.08 Phoenix green terminal |
| Power supply method | Mains / solar / storage battery |
| Sensors that can be connected | Strain gauge / rebar strain meter / anchor cable dynamometer / axial force meter / piezometer |
| Software | PC-based commissioning software / client (custom protocol) |
| Dimensions | 155*147*41 mm |
| Mounting hole dimensions | 132.5*100 mm |