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The LORD MicroStrain® ENV-Link™ -Pro -LXRS® is a ruggedized environmental sensing node with inputs for two thermocouples, four single-ended 0 - 5 V sensors, and a relative humidity and temperature sensor (RHT).
Product Highlights
- Inputs for two thermocouples, four single-ended 0 to 5 V dc sensors, and a relative humidity/temperature (RHT) sensor
- Ideal for remote, long-term environmental monitoring including; measurements of solar irradiance, temperature, relative humidity, soil moisture, leaf wetness, precipitation, wind speed and direction, water level, barometric pressure, conductivity, strain, and more
- Simultaneously transmit real-time data and log to memory.
- Sealed IP67 enclosure for use outdoors and in harsh environments
LORD MicroStrain® LXRS® Wireless Sensor Networks enable simultaneous, high-speed sensing and data aggregation from scalable sensor networks. Our wireless sensing systems are ideal for sensor monitoring, data acquisition, performance analysis, and sensing response applications.
The gateways are the heart of the LORD MicroStrain wireless sensing system. They coordinate and maintain wireless transmissions across a network of distributed wireless sensor nodes . The LORD MicroStrain LXRS wireless communication protocol between LXRS nodes and gateways enable highspeed sampling, ±32 microseconds node- to- node synchronization, transmission range up to 2 kilometers, and lossless data throughput under most operating conditions.
Users can easily program nodes for data logging, continuous, and periodic burst sampling with the Node Commander ® software. The web- based SensorCloud™ interface optimizes data aggregation, analysis, presentation, and alerts for gigabytes of sensor data from remote networks.
High Performance
- Node-to-node sampling synchronization up to ±32 microseconds
- High resolution data with 24-bit A/D converter
- Scalable, long range wireless sensor networks up to 1 km
Ease of Use
- Rapid deployment with wireless framework
- 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, alerts, and analysis.
- Easy custom integration with comprehensive SDK
Cost Effective
- Out-of-the box wireless sensing solution reduces development and deployment time
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General |
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Sensor input channels |
Thermocouple inputs, 2 channels 0 to 5 V dc inputs,4 channels RHT sensor input, 1 channel each (temperature and humidity), integrated sensor optional |
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Data storage capacity |
2 M bytes (up to 500,000 data points) |
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Thermocouple inputs |
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Measurement range |
-210 °C to 1820 °C (depending on the thermocouple type) |
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Accuracy |
± 0.1 % FSO or ± 2 °C (not including error from sensor or wire) |
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Resolution |
0.0625 °C, 24 bit |
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Repeatability |
± 0.1 °C (does not include error from sensor or wire) |
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0 to 5 V DC inputs |
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Measurement range |
0 to 5 V dc |
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Accuracy |
0.01 % typical (absolute accuracy) |
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Resolution |
24 bit |
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Sensor excitation |
2 or 3 V dc (user selectable) |
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Relative Humidity and Temperature (RHT) Sensor Input |
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Measurement range |
0 to 100 % RH, -40 °C to 123 °C |
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Accuracy (RH) |
± 2 % (10 to 90 % RH), ± 4 % ( 0 to 10% RH and 90 to 100% RH) |
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Accuracy (temperature) |
± 0.3 °C typical |
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Resolution |
14 bit |
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Sampling |
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Sampling modes |
Synchronized, low duty cycle, datalogging |
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Sampling rates |
1 sample/hour to 2 Hz |
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Sample rate stability |
±3 ppm |
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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 |
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Synchronization between nodes |
± 32 μsec |
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Operating Parameters |
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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) |
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RF communication protocol |
IEEE 802.15.4 |
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RF range |
70 m to 1 km line of sight with RF power setting |
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Power source |
Internal: rechargeable 3.6 V dc, 740 mAh Lithium ion battery (standard), or size D-cell 3.6 V dc Lithium thionyl chloride battery (optional); External: 3.3 V dc to 9.0 V dc |
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Operating temperature |
-20 ˚C to + 60 ˚C (with rechargeable Lithium ion battery) -40 ˚C to + 85 ˚C (electronics only) |
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Physical Specifications |
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Dimensions |
140 mm x 140 mm x 101 mm |
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Weight |
1360 grams |
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Environmental rating |
IP67 |
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Enclosure material |
Fiberglass reinforced polyester |
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Integration |
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Compatible gateways |
All WSDA® base stations and gateways |
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Compatible sensors |
Thermocouple inputs: all types 0 to 5 V dc inputs: pyranometers, photosynthetic photon flux, soil moisture, and leaf wetness sensors (all available from LORD MicroStrain® ), thermocouples, rain and strain gauges, anemometers, and other 0 to 5 V dc sensors RHT input: LORD MicroStrain® RHT sensor, others may work but have not been tested, RHT sensor integration optional |
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Connectors |
Water-tight cable seals with terminal blocks inside enclosure |
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Software |
SensorCloud™, Node Commander®, WSDA® Data Downloader, Live Connect™, Windows XP/Vista/7 compatible |
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Software development kit (SDK) |
Data communications protocol available with EEPROM maps and sample code (OS and computing platform independent) http://www.microstrain.com/wireless/sdk |
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Regulatory compliance |
FCC (U.S.), IC (Canada), ROHS |
General Documentation
- ENV-Link™-Pro-LXRS® Datasheet
- ENV-Link™-Pro -LXRS® Sensors Datasheet
- Node Commander Wireless Sensing Software User Manual
- MicroStrain Wireless Sensor Networks LXRS™ Data Communications Protocol
- Wireless Products Comparison
Software Development Kit
Technical Notes
- LXRS® Firmware Upgrades
- Outputting a 4 to 20 mA Current Loop
- Battery Use and Replacement
- Synchronized Sampling on Startup
FAQ's
What is Multipath?
Multipath is the phenomenon whereby a radio signal arrives at a receiver’s antenna by more than one path. This occurs by the reflection, diffraction, or scattering of radio waves from atmospheric ducting, reflection from water bodies or terrestrial objects (like mountains), etc.
Does Multipath impact signal strength?
Yes, multipath propagation of radio signals causes fading of the transmitted signal, which can be indicated by fluctuations in signal strength when received by the signal receiver.
How do I mitigate Multipath?
Pe-position base station or node to mitigate possible multipath interference.
Ensure a clear path to the antenna for the strongest signal, enhancing the strength of the strongest signal AND reducing the strength of the weaker signals.
Learn More: Mutipath Propagation
The WSDA-RGD (with internal GX3 inertial sensor) is configured to produce the following messages on startup.
GPS Data (1 Hz):
- UTC Time
- LLH Position
- NED Velocity
AHRS Data (100 Hz):
- Euler Angles
From this output the WSDA logs:
GPS (1 Hz):
- latitude
- longitude
- height above ellipsoid
- height above MSL
- horizontal accuracy
- vertical accuracy
- speed
AHRS (100 Hz):
- roll
- pitch
- yaw
The WSDA-RGD does not log any data until it gets a valid time, if it is set to get time from GPS only it will not log any output from the GX3 until the UTC timestamp from the GX3 is valid, even though the GX3 is producing valid AHRS data.
This data is not user configurable and is not available as a live stream through LiveConnect.
All LORD MicroStrain wireless sensor nodes, wireless base stations, and wireless sensor data aggregators are shipped from the factory with their radio frequency set to channel 15 (2.425 GHz).
This channel setting was established during 2012.
Previously all wireless products were set to channel 25 (2.475 GHz).
If you are mixing new nodes and base stations with older nodes and base stations, please be cognizant of these different channel settings.
The Node Discovery function of Node Commander will help you sort out which nodes are on what channels; Node Discovery is channel independent and allows the base station to communicate with any node, no matter what channel it is on
Sampling methods such as synchronized sampling, low duty cycle, network broadcast, etc. require that all nodes are on the same frequency so you will want to insure that you have adjusted the channels settings of the nodes to suit.
