Geotechnical News - September 2015 - page 2

info@rstinstruments.com
www.rstinstruments.com
TELEPHONE | 604 540 1100 | FAX 604 540 1005
TOLL FREE (NORTH AMERICA) | 1 800 665 5599
WESTERN USA | 831 899 1632
Wireless technology providing automated data
acquisition with minimum per channel cost.
WIRELESS DATA
ACQUISITION for Geotechnical
Instruments
Y o u r i n s t r u m e n t s Y o u r f i e l d d a t a Y o u r w o r k s t a t i o n Y e s . . . i t i s t h a t e a s y .
L900S Y S T E M
An RSTAR L900 System uses L900 RSTAR Nodes (see left) at the sensor level, deployed in a star topology
from an active L900 RSTAR Hub, which consists of an L900 RTU interfaced to a FlexDAQ datalogger.
The system is based on the 900 MHz, 868 MHz and 2.4 GHz spread spectrum band (country dependent)
with extensive open-country range through use of simple dipole or directional antennae.
900 MHz, 868 MHz, 2.4 GHz
(country dependent)
Spread Spectrum band
ANTENNA
Solar
Panel
Battery
Datalogger
L900 RTU
Ethernet
Spread Spectrum Radio
Wi-fi
Multi-drop
Cellular
Storage Module
USB
RF Modem to RF Base Station
Short Haul Modem
Iridium ISU
CUSTOMER’S
SERVER
or
WORKSTATION
RSTAR HUB
D I A G R A M
DT2011B DATA LOGGER
Monitor a single vibrating wire
sensor and thermistor.
DT2055B DATA LOGGER
Monitor up to 10 sensors.
Can be any mix of vibrating wire
sensors and thermistors.
DT2040 DATA LOGGER
Monitor up to 40 sensors.
Can be any mix of vibrating wire
sensors and thermistors.
DT4205 DATA LOGGER
Monitor up to 10 channels.
Can be any mix of 4-20mA
sensors or thermistors.
DIGITAL TILT LOGGER
Low cost, lithium ‘D’ cell
powered data logger & tilt meter
in a single, compact unit.
RSTAR
L900
NODE
Vibrating
Wire
(ie:Piezometer)
RSTAR
L900
NODE
Thermistor
or
Thermistor
String
RSTAR
L900
NODE
MEMS
Tilt Meter
RSTAR
L900
NODE
4-20mA
Transmitter
Typical RSTAR configuration for the RSTAR L900 System.
Antenna can be
easily attached in field.
Sensor
C ON
NEC T W I TH
U
S
L900
RSTAR
Node
MIG0296C RST Instruments Ltd. reserves the right to change specificationswithoutnotice.
http://www.linkedin.com/company/rst-instruments-ltd-
F E A T U R E S
Excellent Hub-Node range - up to 14 km in open country depending on antenna.
Ultra-low quiescent power. RSTAR Nodes powered by 1 lithium ‘D’ cell (up to 7 years of life).
Simple star routing - no mesh overhead.
Simple network setup: add node serial number to RSTAR Hub list, deploy.
Based on proven flexDAQ experience and technology - up to 255 L900 Nodes per flexDAQ.
Multiple telemetry options such as cell, modem, LAN, radio, satellite (see diagram).
Data accessible at multiple locations via WWW - protected at all stages by encrypted, error-corrected transmission & storage.
WORKS WITH
GeoViewer
REAL-TIME MONITORING
More info at: www.rstinstruments.com/rstar.html