VWdot4 Vibrating Wire Datalogger

The Sanlien VWdot4 Vibrating Wire Datalogger utilizes LTE-M wireless transmission technology and is specially designed to meet the needs of geotechnical engineering applications. It is a reliable choice for automated safety monitoring in civil engineering, water conservancy, construction, and other fields. This datalogger measures the frequency of vibrating wire sensors and thermistor temperature signals with low power consumption, ensuring accurate and continuous data collection even in harsh environments.

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Datasheet Manual

Product information:

Applications

Water level monitoring - Water level transducers measurement
Water pressure monitoring - Piezometers measurement
Stress monitoring - Rebar strain gauges measurement
Strain monitoring - Strain gauges measurement
Load monitoring - Load cells measurement
Crack monitoring - Crackmeters measurement
Landslide monitoring - Displacement transducers measurement
Suitable for monitoring in construction for site, civil engineering, water conservancy construction, bridge engineering and slope safety

Key Features

Real-time monitoring enabled via LTE-M wireless transmission and dot cloud integration
Supports MQTT protocol for versatile data acquisition and integration
Low-power consumption
Robust and waterproof enclosure
Data uploads to the dot cloud via simple Micro SD card setup
Built-in 32 GB Micro SD card stores over 1 million data records

Technical Specifications

Measurement Type: Vibrating Wire Sensor
Measuring Range: 450 to 6000 Hz
Accuracy: ±0.01 %@3000 Hz
Channel: 4
LPWAN: LTE-M
Network Protocol: MQTT
Storage: 32 GB Micro SD Card (expandable)
Power Supply: 18650 Li-ion battery x4 (Supports 5‒18 Vdc charging via solar panel or external source)
Power Consumption: up to 15 months (RSSI < 15) to 24 months (RSSI ≥ 15) with hourly measurements
Temperature Type: Thermistor
Temperature Resolution: 0.1°C
Dimension (L x W x H): 160 x 160 x 70 mm (excluding antenna)