NEW VERSION
There is a new version of this product available. The product on this page has been discontinued and the datasheet and manual are provided for informational purposes.
Product no longer stocked – limited availability
Contact for pricing and lead time--a minimum order quantity may apply
Contact for pricing and lead time--a minimum order quantity may apply
The RTD-Link™ -LXRS® is a specialized node designed for data acquisition from standard resistance temperature detectors.
Product Highlights
- Features a standard resistance temperature detector (RTD) input and an embedded temperature sensor
- Software-programmable on-board linearization algorithms designed to support 2 or 4 wire PT100 RTD type sensors
- Small form factor, low power consumption, and wireless framework optimizes deployment in remote and long-term monitoring applications.
- High resolution data with 24-bit A/D converter
- User-programmable sample rates up to 64 Hz
- Simultaneously transmit real-time data and log to memory
Wireless Simplicity, Hardwired Reliability
High Performance
- Measurement accuracy to ±0.1% of full scale
- 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
- 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
|
General |
|
|---|---|
|
Sensor input channels |
RTD sensor input, 1 channel |
|
Integrated sensors |
Temperature, 1 channel |
|
Data storage capacity |
2 Megabytes (up to 500,000 data points) |
|
Resistance Temperature Detector (RTD) Sensor Input |
|
|
Measurement range |
-200 °C to 850 °C (depending on the RTD sensor) |
|
Accuracy |
± 0.1 % of full scale or ± 2 °C, whichever is greater (does not include error from sensor or wire) |
|
Resolution |
0.0625 °C, 24 bit |
|
Repeatability |
± 0.1 °C (does not include error from sensor or wire) |
|
Integrated Temperature Channel |
|
|
Measurement range |
-40 °C to 85 °C |
|
Accuracy |
± 0.5 °C (from 0 to 70 °C) |
|
Resolution |
12 bit |
|
Sampling |
|
|
Sampling modes |
Synchronized, low duty cycle |
|
Sampling rates |
Continuous sampling: 1 sample/hour to 64 Hz Datalogging: 1 sample/hour to 64 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.- limited to 10dBm (10mW) |
|
Range for bi-directional RF link |
70 m to 2 km line of sight with RF power setting |
|
RF communication protocol |
IEEE 802.15.4 |
|
Power source |
Internal: 3.7 V dc, 250 mAh, rechargeable Li-poly battery External: 3.2 V dc to 9 V dc |
|
Power consumption |
25 mA at idle |
|
Operating temperature |
-20 ˚C to + 60 ˚C (extended temperature range available with custom battery/enclosure, -40 ˚C to + 85 ˚C electronics only) |
|
Acceleration limit |
500 g standard (high g option available) |
|
Physical Specifications |
|
|
Dimensions |
50 mm x 58 mm x 21 mm |
|
Weight |
49 grams |
|
Enclosure material |
ABS plastic |
|
Environmental rating |
Indoor use (unless mounted in a sealed enclosure) |
|
Integration |
|
|
Compatible gateways |
All WSDA® base stations and gateways |
|
Compatible sensors |
2 and 4 wire PT100 resistance temperature detectors (RTD) |
|
Connectors |
Screw terminal block |
|
Software |
SensorCloud™, SensorConnect™, 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 |
General Documentation
- RTD-Link-LXRS Product Datasheet
- RTD-Link-LXRS 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
- Synchronized Sampling on Startup
Videos
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.
