34 Water/Wastewater
High Quality Bladder Pumps
Concentration Measurement, Phase Detection and Reaction Monitoring with LiquiSonic
The company SensoTech (Germany) provides with LiquiSonic a measuring and analytical system that measures the concentration in any type of liquid. Typical applications are the precise concentration determination of material mixtures, the phase detection, the neutralisation or reaction monitoring, such as polymerisations and crystallisations. Using the LiquiSonic system, quality and process safety are guaranteed as well as increased yield and saving in resources by reducing the consumption of raw material and energy at the same time. The concentration determination is based on the sonic velocity measurement that enables a high measuring accuracy and provides updated measuring data within seconds.
Solinst (Canada) Bladder Pumps provide consistent, reliable samples. Ensuring no air/water contact during operation, they are excellent for sampling VOC’s. Teflon Bladders are ideal for dedication, inexpensive polyethylene also available. Solinst Bladder Pumps are great for low flow and/or regular sampling. Stainless steel pumps can sample from up to 150 m (500 ft) while PVC models can operate to 30 m (100 ft).
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Early Warning Pollution Detection Device for Field Use
AquaMonitrix innovative microfluidic technology results in a convenient, portable device which can be deployed in streams or waterways. AquaMonitrix measures pH, nitrate and nitrite simultaneously in real-time, with wireless remote monitoring.
Using a new state-of-the-art microfluidic platform, in conjunction with reagent-based chemistry, the system can perform in-situ calibration and high frequency measurements over long deployment periods. AquaMonitrix can issue an immediate warning on detection of a pollution event and allow the monitor to communicate speedily, alerting relevant stakeholders and limiting environmental damage.
TE Laboratories (Ireland) have been active in the area of environmental analysis for over 20 years and are currently developing further analysis capability for AquaMonitrix: COD, conductivity, phosphate, ammonia, herbicides, pesticides, microbiological parameters and heavy metals will be available in the near future. View the product at Achema, hall 4.2 stand A49.
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New Turbidity Probe Reduces Sensor Fouling in Biologically Active Environments
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LiquiSonic consists of one controller and one or several sensors. The sensors are installed directly in the process, working maintenance-free and are usually manufactured in stainless steel. For using the sensors in chemically aggressive liquids there are special materials available. SensoTech is also flexible in providing different installation lengths, process fittings and electronic housings. The completely enclosed design, that requires neither gaskets nor moving parts or “windows” to the process, makes the sensors especially robust. In hazardous areas, SensoTech is able to provide a certification for ATEX and IECEx. The controller manages and visualises the reproducible measuring data. With connection to control systems, it is possible to regulate the process automatically.
SensoTech will be at ACHEMA 2012, in hall 11.1, booth F75. Reader Reply Card No. 155
On-Site Ammonium Test Kits Used at Water Treatment Works
A large UK Water Company uses Merck Ammonium test kits (1.11117.0001) exclusively available from VWR (UK) to carry out a quick on site test when problems at treatment works and pumping stations occur. Engineers carry out Ammonium tests to check that none of the untreated water has escaped in to the environment, giving an early warning should any preventative action be required. Any positive results are sent to an accredited laboratory for confirmation. This kit provides the engineers with a simple, quick and inexpensive way of checking that the job has been completed successfully or if further work is required. The kit requires no training and has been fully validated so that only those samples showing unacceptably high results require confirmatory analysis. This Merck Ammonium kit has been used to help prevent pollution incidents which is good for the environment but also reduces the chance of any fines being bought by the Environment Agency.
Reader Reply Card No. 157
New Portable Velocity Flow Meter
Hach Company Flow Meter Products & Services (USA) is pleased to announce the release of its latest flow monitoring innovation, the FH950 Portable Velocity Flow Meter with electromagnetic sensor.
Hach’s new FH950 simplifies the velocity measurement process for stream discharge measurements, primary device calibration and sewer spot-check measurements. Step-by- step instructions guide the user through the flow profiling process, and with the ability to log velocity and entered depth information within the meter, field time is cut in half. Discharge calculations are available real-time and collected flow data is conveniently downloaded to a computer via the USB connection, eliminating post-site visit manual data transfer and calculations.
The electromagnetic sensor is disconnectable from the meter, has no moving parts and never requires mechanical maintenance or calibration, making it the lowest maintenance solution on the market. The meter is a direct replacement for USGS type mechanical meters.
Reader Reply Card No. 159
Robust Differential Pressure Switches
The OBS500 submersible turbidity probe from Campbell Scientific (UK) has active anti-fouling capabilities for better measurements in biologically active water with both high and low turbidity.
It utilises backscatter and sidescatter techniques to measure turbidity and incorporates the CleanSensor anti-fouling method which includes an integrated shutter/wiper mechanism that only exposes the lens during measurement to reduce exposure to algae and other organisms. Additionally, a refillable chamber leaches biocide across the lens to further reduce fouling. An optional plastic sleeve is available that simplifies cleaning and an optional copper sleeve offers even greater protection, particularly in seawater.
Sensor outputs is SDI12 for easy connection to any compatible datalogger.
Reader Reply Card No. 158 IET May / June 2012
www.envirotech-online.com
The new mechanical differential pressure switch S4540 from tecsis GmbH (Germany) can switch a load depending on a pressure difference. The switch has a high overload safety. The overload pressure is 16 bar while the burst pressure is 25 bar. The switching point can be easily set with an adjusting knob between 10 % and 100 % of the full range, which vary from 0.6 bar up to 6 bar. The switch is available as NO or NC version. The typical hysteresis is 2 %. Typical applications can be found in heating, air-conditioning, and ventilation systems, in filter and flow control, and other building automation applications.
In addition tecsis offers the new electronic differential pressure switch S1510, which is as robust as the S4540. Two relays or MOSFET outputs can switch the connected loads depending on the pressure difference. The measured pressure difference can be displayed on an integrated 3½ digit LED. In addition the S1510 provides an analogue output signal (0…10V or 0/4…20 mA), which can be damped, spread, inverted or linearly transformed. The electronic differential pressure switch has a high accuracy of typical 0.8 % of the adjustment range. The switching point and the output signal can be easily programmed with three keys at the front. The S1510 is utilized in applications, where in addition to the switching function, the pressure values have to be monitored.
Reader Reply Card No. 160
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