Ref: GSV-6BT M8

High-speed standalone data logger with 7 analog inputs

Miniature standalone data logger
Recording on Micro-SD card or wireless real-time transfer via Bluetooth to Windows PC
7 Analog inputs: full-bridge, half-bridge, quarter-bridge strain gauges, PT1000, 0-5V or 0-10V input, 1 incremental encoder channel
Sampling rate: from 10 Hz up to 500 Hz (6 channels) / 3 kHz for 1 channel
Continuous, periodic, or trigger-based recording
Resolution: 16 bits
Power supply: Li-Ion batteries, integrated charging circuit 4.5 – 5.5V 0.5A
Configuration via PC software + Bluetooth 4.0 connection
Recording file format: CSV
IP66 enclosure, dimensions: 152 x 97 x 61 mm

Overview

The GSV-6BT M8 is a data acquisition module enabling the recording of analog measurement data (up to 6 channels) on a micro-SD card or wirelessly to a PC (Bluetooth connection). Four recording modes are available: continuous, periodic, external trigger, or threshold-based. The module features 4 programmable alarms, and recording files can be downloaded remotely via Bluetooth. A real-time clock enables timestamping of measurements.

Specifications

Parameter	Value
Input channels	7
Input types	Channel 1: full-bridge strain gauges, Channels 2 to 6: quarter-bridge, half-bridge, or full-bridge strain gauges, 0-5V, 0-10V, RTD, Channel 7: angular encoder
TEDS	On Channel 1 only
Recording	On SD card or wireless real-time via Bluetooth
Acquisition speed	1 channel: up to 3 kHz, 6 channels: up to 500 Hz
Resolution	16 bit
Power supply	Via integrated 2.6 Ah rechargeable battery, rechargeable via mains power supply
Connectivity	M8 or cable glands
Micro SD Card capacity	Up to 32 Gb
Acquisition software	GSVmulti included
Sensor excitation	3.3 VDC
Bluetooth	Version 4.0 LE
Recording modes	Continuous, periodic, external trigger, threshold-based
Data timestamping	Yes via internal clock
Digital inputs	4 digital inputs for trigger management, alarms, or synchronization of multiple modules
Dimensions	152 x 97 x 61

The Bluetooth connection is compatible with the following modes:

BT Classic with Serial Port Profile (SPP), for continuous transmission to the acquisition PC
BT Low Energy (LE), which can be used with a smartphone, for example.

Standalone data logger for structure monitoring

The GSV-6BT M8 is particularly suited for structure monitoring applications (bridges, buildings, sites, construction sites, etc.). The analog channels and acquisition frequencies allow connection to a wide range of sensors: displacement, force, torque, acceleration, crack meters, inclinometers, etc. Automatic file management and the use of a cellular router with Bluetooth connectivity enable instant access to recording files in a secure configuration.

Communication, Software

The Windows acquisition software GSVmulti included with the GSV-6BT M8 can be used to configure the GSV-6BT M8 module. It requires first creating a virtual COM port on the PC (driver provided).

An SDK is also available for application development in C, C++, or LabVIEW (Windows function library (MEGSV8w32.dll) with annotated C header and a library with wrapper VIs for this DLL).