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The Torque-Link-LXRS® is a specialized analog sensor node designed to fit over rotating shafts for wireless strain and torque measurements.

Product Highlights

  • One or two differential analog input channels designed for full-bridge strain gauge integration
  • Ideal for static and dynamic torque measurements with full temperature compensation and bending cancellation
  • Rugged ABS housing designed for remote, long-term installation on cylindrical shafts
  • Wireless data transmission allows installation on rotating components without a slip ring
  • Standard and custom diameters available
  • User-programmable sample rates up to 4096 Hz
Datasheet Manual Software
Where to Buy?
U.S. International OEM

Wireless Simplicity, Hardwired Reliability

High Performance

  • Lossless data throughput and sensor-to-sensor sampling synchronization of ±32 μS in LXRS-enabled modes

Ease of Use

  • Wireless framework reduces installation complexity
  • Installs over existing strain elements and shafts with no mechanical modifications
  • Configurable housing geometry will accommodate any shaft size
  • Low power consumption allows extended use
  • Remotely configure sensors, acquire, and view sensor data with Node Commander®

Sensor input channels

Differential analog, 1 channel (standard),

2 channels (optional)

Integrated sensors

Internal temperature, 1 channel

Data storage capacity

2 M bytes (up to data points)

Analog Input Channels

Measurement range

Differential: full-bridge, 350 Ω


± 0.1% full scale typical

Anti-aliasing filter bandwidth

Single-pole Butterworth

-3 dB cutoff @ 500 Hz

Bridge excitation voltage

+ 3 V dc (pulsed @ sample rates 16 Hz to conserve power)

Measurement gain and offset

User-selectable in software on differential channels, gain values from 20 to 2560

Integrated Temperature Channel

Measurement range

-40 °C to 85 °C, ± 2 °C (at 25 °C) typical


12 bit


Sampling modes

Synchronized, low duty cycle, datalogging

Sampling rates

Continuous sampling: 1 sample/hour to 512 Hz

Periodic burst sampling: 32 Hz to 4096 Hz

Datalogging: 32 Hz to 4096 Hz

Sample rate stability

±3 ppm

Network capacity

Up to 2000 nodes per RF channel (and per gateway) depending on the number of active channels and sampling settings. Refer to the system bandwidth calculator:

Synchronization between nodes

± 32 μsec

Operating Parameters

Wireless communication range

100 m (typical)

Radio frequency (RF)

transceiver carrier

2.405 to 2.470 GHz direct sequence spread spectrum over 14 channels, license free worldwide, radiated power programmable from 0 dBm (1 mW) to 16 dBm (39 mW); low power option available for use outside the U.S.- limited to 10dBm (10mW)

RF communication protocol

IEEE 802.15.4

Power source

Replaceable, non-rechargable battery pack (3.0 V dc, 1.2 Ah Li/MnO2 batteries in series configuration)

Power consumption

1 to 25 mA (configuration dependent)

Operating temperature

-20 ˚C to + 80 ˚C

Angular acceleration limit

500 g standard (high g option available)

Maximum RPM

2500 to 4200 RPM (diameter dependent, high RPM option available)

Physical Specifications


Height 88.9 mm (3.5 inches), ID varies for use on 50.8 to 152.4 mm (2 to 6 inch) diameter shafts (custom sizes available)


200 to 525 grams (0.44 to 1.16 lb), depending on size

Environmental rating

IP66, tested to DO-160 standards for temperature variation, humidity, and vibration

Enclosure material

ABS thermoplastic


Compatible gateways

All WSDA® base stations and gateways

Compatible sensors

Bridge type analog sensors


Strain gauge and battery interface connectors

Shunt calibration

Internal shunt calibration resistor 499 KΩ


SensorCloud™, Node Commander®, Windows 7 (or newer)

Software development

Open-source MicroStrain Communications Library (MSCL) with sample code available in C++,Python,and.NET formats (OS and computing platform independent):

Regulatory compliance

FCC (U.S.), IC (Canada), ROHS


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.

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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