22 Water/Wastewater Wireless Communication with Data Loggers
Keller (Switzerland) has now developed a universal, energy-optimised radio module with integrated data logger. The GSM-2 remote data transmission unit and the free PC software allow you to conveniently observe levels, measurements and trends and monitor limits from the comfort of your office. This applies to groundwater levels, waste water levels and the filling levels of mobile tanks on vehicles. However, it also applies to completely different measurements from appropriate sensors with suitable output signals.
The cylindrical design of the GSM-2 with a diameter of just 48 mm has been chosen so that the data logger, which ”self-dials” in accordance with user requirements, can simply be placed in the top of a normal 2-inch diameter sounding pipe that is used in groundwater measuring equipment. Installation takes a matter of seconds. The housing is designed to withstand condensation and being under water for short periods. The GSM antenna is covered with a lockable covering cap made from solid plastic. The data logger is therefore protected from theft and vandalism when level measurements are being taken outdoors.
Equipped with energy-efficient electronics and a robust lithium battery (3.9 V/32 Ah), the logger can send the results of 24 measurements to a PC
at headquarters for up to 10 years by e-mail, or transfer them to a mobile phone via SMS. The maximum measuring speed is 1 measurement per minute. Two voltage inputs (0 - 2.5 V), 2 digital inputs, a BUS interface (RS 485) for operating up to 5 level sensors or optionally the SDI12 interface for water analysis units make the GSM-2 data logger a universal data acquisition module for wide area measuring networks.
An air pressure sensor and a temperature sensor are already integrated in the GSM-2, especially for taking level measurements using pressure sensors with long-term stability such as the Keller 30 series. The actual sensor no longer has to be connected to the ambient air via a capillary tube in the supply cable. The measuring accuracies that can be achieved from the difference between the probe signal and the air pressure signal are within the range of a few millimetres.
The GSM2 DataManager, which is flexible, convenient and free software, takes over the key functions of a monitoring, acquisition, control and organisation unit. The DataManager acquires the measurements, allocates them, displays them in graphical format, provides a signal when limits are exceeded and then stores them in a mySQL database for which no licence fee is required. Third parties can access the measurements using various export and Internet functions and integrate them in their data acquisition systems. All parameterisation and monitoring of the individual GSM-2 data loggers is also carried out using the GSM2 DataManager software.
Reader Reply Card no 65 New Water Data Logger Manages Readings from Any Location
China’s first official water business exhibition
17 – 19 November 2010
China National Convention Center Beijing, China
Reader Reply Card no 66
New Low Cost Titanium Water Level Instruments In-Situ®
STS (Switzerland’s) newly developed watermanager solution allows for conveniently managing and reading data loggers from any location at any time. In case of an out-of-limits condition, a warning message is generated and transmitted automatically via SMS and e-mail. In this way, a maximum degree of flexibility and cost efficiency is attained with regard to the monitoring of water levels and temperatures of rivers, lakes, ground water, sources, and boreholes.
The WEB watermanager software offers a clear overview of all data loggers. It enables the configuration and monitoring of measuring data. Data may be downloaded directly into the customised analysis software or an Excel spreadsheet.
(USA) announce a new line of low-cost, titanium water level instruments. The durable, corrosion-resistant Rugged TROLL instruments monitor and record changes in water level, pressure, and temperature.
Rugged TROLL instruments withstand harsh conditions and can be used to monitor groundwater and surface water levels, coastal environments, landfills, flood events, storm surges, and more. Additionally, these instruments can be used to automate crest-stage gages. Two versions of the Rugged TROLL instrument are available.
The Rugged TROLL®
time data access via a telemetry system, PLC system, PC, or RuggedReader® Rugged TROLL 200 can be deployed on suspension cable. The Rugged TROLL®
200 instrument with direct-read cable is designed for applications that require real- handheld PC. If needed, the Com device is the
100 instrument is intended for long-term deployments that require minimal data access. Users deploy the Rugged TROLL 100 on suspension cable. Upon retrieving the instrument, users download data via a docking station to a PC or RuggedReader handheld PC.
communication interface between a Rugged TROLL 200 instrument and a PC or RuggedReader handheld PC. The Rugged TROLL®
These non-vented (absolute) instruments are compatible with In-Situ Inc.’s user-friendly Win-Situ® 5 software platform, which simplifies
programming and data downloads. For optimum accuracy and to correct for barometric pressure changes, the titanium Rugged BaroTROLL® instrument can be deployed along with a Rugged TROLL instrument. The Rugged BaroTROLL monitors and logs barometric pressure.
Reader Reply Card no 67
For more information please contact:
Messe Frankfurt (Shanghai) Co Ltd Tel: (86) 21 6160 8528 / 8565 Fax: (86) 21 5876 9332
water@china.messefrankfurt.com
www.waterexpochina.com
New Suspended Solids Monitoring Sensor
Optex (Japan) provide various sensors for Water Quality Monitoring that contribute to environmental protection which are easy to use at a low cost. Optex™s main products are the TC Series of suspended Solids Meters and Turbidimeters. The TC Series has 4 measurement ranges, 0-100, 0-500, 0-3000 FTU and 0-500 mg/l. The TS-200 allows 24 hour automatic suspended solids monitoring and has three main features which include, built-in wiper to keep lenses clean and practically maintenance free, scratch-proof sapphire windows as well as light gathering technology with specially designed lenses to enlarge the image of the water in 3 dimensions to enable accurate measurement. The Transmitter, SC-T3 and SC-T4 can indicate 4-20mA signal output, alarm relay output and self checking relay output. Calibration of the TS-200 can be performed out of water.
Reader Reply Card no 69 Reader Reply Card no 68
AET
August/September 2010
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