VWdot

Vibrating Wire Datalogger

VWdot

Feature and Application

Introduction

The VWdot Vibrating Wire datalogger utilizes NB-IoT 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 can measure the frequency of vibrating wire sensors and thermistor temperature signals with low power consumption, ensuring accurate and continuous data collection even in harsh environments. The VWdot Vibrating Wire datalogger is equipped with a built-in 32 GB Micro SD card, providing sufficient storage capacity for over one million data records, making data analysis during long-term monitoring more comprehensive and ensuring that no critical data is missed. This datalogger is renowned for its excellent cost performance and reliability and has undergone rigorous testing and quality verification to deliver accurate and consistent measurement.

Applications

Key Features

Low-Power Consumption

MQTT Protocol

Powered by two 18650 Li-ion batteries, VWdot operates up to 8 months (RSSI < 15) to 16 months (RSSI ≥ 15) with hourly measurements.

Supports MQTT for versatile data acquisition and integration.

NB-IoT wireless transmission

Simple Operation

Real-time monitoring enabled via NB-IoT and dot cloud integration.

Data uploads to the dot cloud via simple Micro SD card setup.

Best Suited

Construction Site and Civil Engineering Project

Water Conservancy Project

Slope Safety

Bridge Engineering

Web Monitoring Tool and Software

The “dot Cloud” adopts a web-based architecture and primarily provides the NB-IoT datalogger developed by Sanlien Technology.

Web Monitoring Tool and Software

dot Cloud

The “dot Cloud” adopts a web-based architecture and primarily provides the NB-IoT datalogger developed by Sanlien Technology.

Product Specification

VWdot
VWdot4
Measurement Type
Vibrating Wire Sensor
Vibrating Wire Sensor
Measuring Range
450 to 6000 Hz
450 to 6000 Hz
Accuracy
±0.01 %@3000 Hz
±0.01 %@3000 Hz
Channel
1
4
LPWAN
NB-IoT
NB-IoT
Network Protocol
MQTT
MQTT
Storage
32 GB Micro SD Card (expandable)
32 GB Micro SD Card (expandable)
Power Supply
18650 Li-ion battery x2
(Supports 5‒18 Vdc charging via solar panel or external source)
18650 Li-ion battery x4
(Supports 5‒18 Vdc charging via solar panel or external source)
Power Consumption
8 months (RSSI <15)
16 months (RSSI ≥15)
one measurement per hour
15 months (RSSI <15)
24 months (RSSI ≥15)
one measurement per hour
Temperature Type
Thermistor
Thermistor
Temperature Resolution
0.1°C
0.1°C

Dimension (L x W x H)

100 x 100 x 60 mm (excluding antenna)
160 x 160 x 70 mm (excluding antenna)

*All prices, features, and specifications are subject to change without prior notice.