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
Large Quantity & OEM Orders

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®
General

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

Accuracy

± 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

Resolution

12 bit

Sampling

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: http://www.microstrain.com/configure-your-system

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

Dimensions

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)

Weight

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

Integration

Compatible gateways

All WSDA® base stations and gateways

Compatible sensors

Bridge type analog sensors

Connectors

Strain gauge and battery interface connectors

Shunt calibration

Internal shunt calibration resistor 499 KΩ

Software

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): http://lord-microstrain.github.io/MSCL/

Regulatory compliance

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

 

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