The G-Link-200 has an on-board triaxial accelerometer that allows high-resolution data acquisition with extremely low noise and drift. Additionally, derived vibration parameters allow for long- term monitoring of key performance indicators while maximizing battery life.

Product Highlights

  • On-board triaxial accelerometer with ±2 to 8g* and ±10 to 40g** measurement ranges
  • Continuous, periodic burst, and event-triggered sampling
  • Output raw acceleration waveform data or derived vibration parameters (Velocity, Amplitude, Crest Factor)
  • LXRS protocol allows lossless data collection, scalable networks, and node synchronization of ±50 µs.
  • 1 Sample per hour to 4096 Samples per second
  • Ruggedized IP-67 rated enclosure

*G-Link-200-8G

**G-Link-200-40G

 

 

Datasheet Manual Software
Where to Buy?
U.S. International OEM

High Performance

  • User-configurable low and high pass filters
  • Extremely low noise on all axis 25 µg/√Hz* or 80 µg/√Hz **
  • High accuracy temperature sensor ±0.1 °C
  • Wireless range up to 2 km (800 m typical)
  • Datalog up to 8 million data points
  • *G-Link-200-8G

    **G-Link-200-40G

Ease of Use

  • End-to-End wireless sensing solution reduces development and deployment time
  • Remote configuration, acquisition, and display of sensor data with SensorConnect
  • Optional web-based SensorCloud platform optimizes data storage, viewing, alerts, and analysis.
  • Easy custom integration with open-source, comprehensive communications and command library (API)

Accelerometer Channels

Measurement range 8 g 40 g
± 2 g, ± 4 g, or ± 8 g
configurable
±10 g, ±20 g, or  ±40 g

configurable
Noise density 25 µg/√ Hz 80 µg/√ Hz
0 g offset ±25 mg (±2 g) ±50 mg (±10 g)
0 g offset vs temperature ±.1 mg/ °C (typical),
±.15 mg/ °C (maximum)
±0.5 mg/ °C (typical),
±0.75 mg/ °C (maximum)
Integrated Sensors Triaxial MEMS accelerometer, 3 channels
Accelerometer bandwidth DC to 1 kHz
Resolution 20-bit
Scale factor error < 1% full-scale
Cross axis sensitivity 1%

Sensitivity change (temperature)

±0.01%/° C
Anti-aliasing filter 1.5 kHz (-6 dB attenuation)
Low-pass digital filter 26 to 800 Hz - configurable
High-pass digital filter Off to 2.5 Hz - configurable
Integrated Temperature Channel
Measurement range - 40 °C to 85 °C
Accuracy ±0.1 °C (over full range)
Sampling
Sampling modes Continuous, periodic burst, event triggered
Output options

Acceleration, Derived channels: Velocity (IPSrms), Amplitude (Grms and Gpk-pk ) and Crest Factor

Sampling rates 1 sample/hour to 4096 samples/second
Sample rate stability ±5 ppm
Network capacity Up to 128 nodes per RF channel (bandwidth calculator:)
http://www.microstrain.com/configure-your-system
Node synchronization ±50 µsec
Data storage capacity 16 M Bytes (up to 8,000,000 data points)
Operating Parameters
Wireless communication range Outdoor/line-of-sight: 2 km (ideal)*, 800 m (typical)**, Indoor/obstructions: 50 m (typical)**
Radio frequency (RF)
transceiver carrier
License-free 2.405 to 2.480 GHz with 16 channels
RF transmit power

User-adjustable from 0 dBm to 20 dBm. Power output restricted regionally to operate within legal limits

Power source 3 x 3.6 V, ½  AA batteries (Saft LS 14250 recommended)
Battery input range 0.8 V to 5.5 V
Operating temperature -40 °C to +85 °C
Physical Specifications
Dimensions 46.6 mm x 43 mm x 44 mm
Mounting ¼ - 28 UNF - 2B 4.8 mm [.19 in] DP.
Weight Node with 3 batteries: 122 grams
Environmental rating IP67
Enclosure material 300 series stainless steel with polycarbonate cover
Integration
Compatible gateways All WSDA base stations and gateways
Software SensorCloud, SensorConnect, Windows 7, 8 & 10 compatible
Software development kit (SDK)
http://www.microstrain.com/software/mscl
Regulatory compliance FCC (USA), IC (Canada), CE (European Union), JET (Japan)

Mechanical Drawing

Firmware

When you open the SensorConnect application you will find an icon in the top right corner of the window that looks like 3 horizontal lines:

When this icon is highlighted in orange that indicates that an update is available.  Click on the icon and select “update available”:

This will direct you to the location of the SensorConnect downloads page on the MicroStrain website.

Click on the download that corresponds to your system’s configuration (64-bit vs. 32-bit).  Once the download has completed double click the “SensorConnect_X.X.X.msi” file to run the installation.  Follow the on-screen prompts to perform the update.  Note:  SensorConnect will need to be closed in order to complete the installation.

When you re-open SensorConnect the icon in the top right corner or the window should no longer be highlighted in orange, indicating that you are running the latest version of the application.

Refer to the power profiles available under the documentation tab of the node of interest.

V-Link 200: http://www.microstrain.com/misc/v-link-200_power/Web%20V-Link%20200%20po...

G-Link 200: http://www.microstrain.com/misc/Power_Profile/test%20e.htm

G-Link 200 OEM: Coming soon

The 200 series wireless nodes have 16 Mbytes of datalogging memory.  

Now the question arises, ‘how long can a node datalog before its memory is full?’. The answer is that it varies depending on how many channels are being sampled, sample rate, and data type. Here are two examples:

V-Link-200 set so that channel 1 is enabled with a sample rate 2048 Hz, and data type of Float(4 byte).  Our calculation would be:

  • 1 channel x 2,048 samples per second = 2,048 data points per second
  • 2.048 data points x 4 byte float data packet = 8,192 bytes per second
  • 16 MB (rounded down) ÷ 8,192 bytes per second = 1953 seconds (rounded down)
  • 1953 seconds ÷ 60 seconds per minute = ~32 minutes to fill the memory

G-Link-200 set so that channels 1, 2 and 3 are enabled with a sample rate of 32 Hz, and data type of int24(3 byte).  Our calculation would be:

  • 3 channels x 32 samples per second = 96 data points per second
  • 96 data points x 3 byte int24 data packet = 288 bytes per second
  • 16 MB (rounded down) ÷ 288 bytes per second = 55,555 seconds (rounded down)
  • 55,555 seconds ÷ 60 seconds per minute = ~925 minutes (~15 hours) to fill the memory

The % bandwidth has to do with how many nodes/channels you can use at one time.  When setting up a Synchronized Sampling network, SensorConnect will interrogate each node and assign transmission slots for them to send data to the base station.  This is designed to keep the nodes from broadcasting at the same time and causing data loss.  The more channels, and higher sample rate of a node will require more transmission slots, thus higher % of available bandwidth used.

Excel displays our time stamp incorrectly.  If you were to open the data file in Notepad you would see the correct time format. 

To correct the data in Excel, Highlight all of column A, right click on the highlighted region and select Format Cells.  Under the Number tab select Custom, Scroll to the bottom of the list that appears and select “m/d/yyyy h:mm”.  You will need to add “:ss.000” to the end of this, so it looks like this “m/d/yyyy h:mm:ss.000” .  Setting the cells to this will give you the highest resolution that Excel can show.

We use Universal Coordinated Time (UTC) to collect data on all of our devices.  There is no provision to set the time to a local time zone. 

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