The DVRT-Link™-LXRS® is a specialized node designed for high performance data acquisition from inductive displacement sensors including all of the LORD MicroStrain® DVRT sensors.
Product Highlights
- Designed for a wide range of inductive displacement sensors including all LORD MicroStrain DVRTs
- Wireless technology and a rechargeable battery make the DVRT-Link®-LXRS® ideal for remote, long-term monitoring of micro-miniature displacement measurements.
- User-programmable sample rates up to 4096 Hz
- Simultaneously transmit real-time data and log to memory
Designed for ease of use and general versatility, this printed circuit card provides complete temperature compensated conditioning for any sensors. The DEMOD-DVRT® -TC utilizes both alternating current and direct current excitation of the sensor’s inductive bridge to accurately measure position in the face of temperature gradients. Each card contains the requisite components to facilitate plug-and-play use, including active, jumper selectable low pass filters, input supply line filters with reverse input protection, and output line buffers. The DEMOD-DVRT® -TC sine wave excitation and synchronous demodulator provide excellent noise rejection and elimination of thermally induced potentials.
DatasheetThe DEMOD-DC in-line signal conditioner makes LVDT sensors as easy to use as a potentiometer. With integral signal conditioning electronics, simply connect power, ground, and analog out, and the DEMOD-DC outputs a buffered, high-frequency response voltage proportional to linear position. During the manufacturing process the analog output voltage is digitally trimmed, ensuring every LVDT’s offset and gain values produce optimal system output accuracy. The DEMOD-DC provides internal power regulation and reverse polarity protection and operates with a wide range of input voltages.
THIS PRODUCT HAS BEEN DISCONTINUED AND IS NO LONGER AVAILABLE FOR PURCHASE.
DatasheetWireless Simplicity, Hardwired Reliability
High Performance
- Node-to-node synchronization up to ±32 microseconds
- Scalable, long range wireless sensor networks up to 2 km
- Lossless data throughput under most operating conditions
Ease of Use
- Low power consumption allows extended use.
- Remotely configure nodes, acquire and view sensor data with Node Commander®.
- Optional web-based SensorCloud™ interface optimizes data storage, viewing, and analysis.
- Easy integration via comprehensive SDK
Cost Effective
- Out-of-the box wireless sensing solution reduces development and deployment time.
- Volume discounts
High Performance
- Temperature compensated signal conditioning
- Precision synchronous demodulation
- Rapid warm-up time
Ease of Use
- Plug-and-play with LORD MicroStrain® motherboards
- Compatible with all LORD MicroStrain® DVRT sensors
- Adjustable trimmers to set resolution range
Ease of Implementation
- Out-of-the-box use with all standard LORD MicroStrain® DVRT® sensors
- Miniature body for embedded and space restricted applications
- Identical performance between units for quick scaling
High Performance
- High dynamic range for difficult measurements
- Ready for use with LORD MicroStrain® wireless sensor network
General |
|
---|---|
Sensor input channels |
Inductive displacement sensor,1 channel |
Integrated sensors |
Internal temperature, 1 channel |
Data storage capacity |
2 M bytes (up to 1,000,000 data points, data type dependent) |
Displacement Sensor Input |
|
Sensor excitation |
Regulated sine wave, 150 kHz standard (other frequency options available) |
Low-pass filter |
250 Hz standard (factory configurable 10 Hz – 20 kHz) |
Resolution |
12 bit |
Signal-to-noise ratio |
1,000 to 1 typical (factory calibrated with DVRT® sensor) |
Integrated Temperature Channel |
|
Measurement Range |
-40 °C to 85 °C |
Accuracy |
± 2 °C (at 25 °C) typical |
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 |
|
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.A.- limited to 10 dBm (10 mW) |
RF communication protocol |
IEEE 802.15.4 |
Range for bi-directional RF link |
70 m to 2 km line of sight with RF power setting |
Power source |
Internal: 3.7 V dc, 250 mAh rechargeable Lithium polymer battery External: 3.2 V dc to 9.0 V dc |
Power consumption |
See power profile : http://files.microstrain.com/DVRT-Link- LXRS-Power-Profile.pdf |
Operating temperature |
-20 ˚C to + 60 ˚C (extended temperature range available with custom battery and enclosure, -40 ˚C to + 85 ˚C electronics only) |
Maximum acceleration limit |
500 g standard (high g option available) |
Physical Specifications |
|
Dimensions |
61 mm x 61 mm x 27 mm |
Weight |
58 grams |
Enclosure material |
ABS plastic |
Integration |
|
Compatible gateways |
All WSDA® base stations and gateways |
Compatible sensors |
All LORD MicroStrain DVRT® sensors. Other inductive displacement transducers possible (contact LORD MicroStrain Technical Support) |
Connectors |
LORD MicroStrain DVRT® sensor connector |
Sensor warm-up time |
30 seconds recommended |
Software |
SensorCloud™, Node Commander®, WSDA® Data Downloader, Live Connect™, Windows XP/Vista/7 compatible |
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 |
Compensates for a temperature gradient across the sensor
Sensor types |
inductive (DVRT®) |
Excitation |
regulated sinewave, 70 KHz typical |
Demodulation |
synchronous, DC output |
Output |
± 4.5 volts typical |
Gain |
factory adjustable 10-10,000 |
Low pass filter |
2 pole, active Butterworth, 3 dB down @ 1 KHz standard; factory adjustable 10 Hz-8 Khz |
Supply voltage |
motherboard supplies power (typical), ± 6.5 volts min, ± 16 volts max (when used without motherboard) |
Supply current |
30 milliamps per rail |
Warm-up time |
15 minutes recommended |
Operating temperature |
-40 to 85˚C |
PC board size |
120mm x 48mm x 20mm (thick) |
Connectors |
10 pin, .1" pitch header (power, ground); LEMO 4 pin receptacle (bridge points); BNC (analog output) |
Trimmers |
offset (std.) |
Signal Conditioner
- Sensor Types: Parker LORD inductive LVDT (formerly DVRT®) sensors
- Excitation: Regulated sinewave, 150 kHz standard (other frequencies available on request)
- Demodulation: Asynchronous, DC output
- Gain: Factory adjustable from 10 to 10,000
- Low-Pass Filter: 2 Pole, 3dB down @ 800Hz standard, factory adjustable 10Hz to 20kHz for higher bandwidth (lower resolution) or higher resolution (lower bandwidth)
Operation
- 0 to 5V typical, digitally trimmed
- Unique calibration curves provided with each unit for optimal accuracy
- Supply Voltage: +6 to +16 VDC
- Supply Current: 22 mA typical (~15 mA when modified for use with V-Link-200 wireless node)
- Warm-Up Time: 30 seconds recommended
Package
- Operating Tempurature: -40 to +85°C
- Enclosure Size: 65.7mm x 19.9mm x 8.3mm
- Connector:
- Interface: micro-D (MIL-C-83513/5) mating connector included for power supply, ground, analog output
- Sensor: 4-pin PEEK LEMO connector
- Weight: 12g
General Documentation
- DVRT-Link™-LXRS® Product Datasheet
- DVRT-Link™-LXRS® Quick Start Guide
- Microminiature and Subminiature Gauging DVRT® Quick Start Guide
- Non-Contact DVRT® Quick Start Guide
- Node Commander Wireless Sensing Software User Manual
- Wireless Products Comparison
Technical Notes
- Powering a Wireless Node with Sources Greater Than 9 Volts
- LXRS® Firmware Upgrades
- Outputting a 4 to 20 mA Current Loop
- Wireless Sensor Node Power Profiles
- DVRT-Link™-LXRS® Power Profile
- Battery Use and Replacement
- DVRT-Link™-LXRS® Understanding the Calibration
- Using External Power With Wireless Sensor Nodes
- Synchronized Sampling on Startup
Mechanical Prints (Uncontrolled)
Videos
General Documentation
- DEMOD-DVRT-TC Datasheet
- Microminiature and Subminiature DVRT® Quick Start Guide
- Microminiature and Subminiature Gauging DVRT® Quick Start Guide
- Displacement System Chart
- Motherboard Quick Start Guide
Technical Notes
Mechanical Print (Uncontrolled)
General Documentation
Software
- SensorConnect Data Acquisition Software (beta)
- Node Commander Data Acquisition Software
- MicroStrain Communication Library (MSCL)
- Software Systems Overview (link)
- SensorCloud Overview (link)
- MicroStrain SDK LabView Examples (legacy)
Firmware
Mechanical
There are no downloads for this product.
Software/Firmware
There are no software or firmware downloads for this product at this time.