Water / Wastewater Non-Contacting Ultrasonic Pump Controller
Pulsar’s (UK) Quantum non-contacting ultrasonic pump controller is the most sophisticated self- contained control system yet developed for use in sites under risk of flooding and makes available to the operating company a level of functionality previously only available using a specially programmed PLC. Key to the success of the unit is its ability to accurately calculate the ‘time to spill’, avoid periods of high
energy cost, monitor pumping performance, report on pump failure and Quantum will even automatically re-set pumps that have failed or tripped out!
Quantum is a non-contacting ultrasonic system consisting of a transducer positioned above a waste water wet well and a fascia mounted controller. All pump station controllers will provide alarms for a high level, and are capable of switching on and off pumps to control the liquid level. A few will also provide alarms on the rate of change of level, so managers can react to a changing situation. Quantum goes a step further. Quantum can be programmed to provide an alarm based on the time remaining before the station spills over. This is vital for water companies, who face the risk of prosecution if a station pollutes the local environment.
The Quantum controller also features RS485 digital communications (Modbus & optional Profibus DPV 0 & DPV 1) allowing the status to be monitored and the unit to be programmed remotely. Additionally it has a large on board data-logging ability as standard.
Reader Reply Card no 104 New Water Sampling Station
The water quality in modern swimming pools and waterworks is guaranteed thanks to automatic measuring and control systems.
The water sampling station PM 01 developed by Lutz-
Jesco (Germany) complies with German Standard DIN 19643 and serves to record and control the concentration parameters of the free chlorine, the pH value, the Redox- Potential, the temperature and also, optionally, the conductivity.
The measurement of free chlorine is done on the basis of a potentiostatic measurement cell for residual chlorine, which requires a water flow rate of approx. 45 l/hr. Rotating balls thereby ensure a continuous electrode cleaning. The sensors used to measure the pH value, Redox-Potential and temperature are set depending on the application and are fitted in a see-through multi- function mounting block. A hydrostatic flow-through regulator of the water flow rate ensures a constant measuring condition. An automatic electric controller from the TOPAX range is in charge of regulating the water quality.
The sampling station is available in many various models: the basic equipment is the potentiostatic 3- electrode sensor to measure the concentration of free chlorine, the further sensor mounting is completely flexible. The following function elements and accessories are already pre- assembled on the sampling station and/or contained in the scope of supply: strainer, needle valve, tubing with overflow and gas separator, potential-compensating pin, swing-out pipe for taking the sample water, flow rate monitor to switch off the controller functions when there is a shortage of water, balls for the electrode cleaning, connection cable for all sensors as well as a set of calibrations fluids for the sensors.
Point Source Sampling
The Point Source Bailer from Solinst (Canada) is ideal for obtaining high quality representative samples of groundwater from specific depths. It is a simple, cost effective device for aquifer profiling. Dual ball valves, top and bottom, prevent the sample from mixing with water above the sampling zone during retrieval. A miniature model is made for use in narrow tubes and direct push devices.
Reader Reply Card no 105 Phosphate Reduction
A new range of pumps from Nitto Kohki (Germany), are set to push the standards in pumping technology to a new level. When talking about waste water treatment, phosphates are detrimental to the end product and must usually be eliminated. Using the BIMOR pump to introduce the necessary chemical into the process is the simplest solution for phosphate reduction.
While conventional liquid pumps historically use diaphragms which need complex mechanics to
operate, the “BIMOR” uses simple Piezoelectric “Bimorph” technology. As a consequence their life time is significantly longer and their power consumption is significantly lower than that of conventional pumps. By choosing the correct version from the Bimor range, Ferric Sulphate or Aluminium Chloride can be pumped without problems.
The maximum pressure is 180 mbar and the flow rate for water is 220 ml/min. The potential application range is extensive and stretches from medical technologies through computer technology to fuel cells.
Reader Reply Card no 103
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Reader Reply Card no 106
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 142
Reader Reply Card no 107 AET October/November 2008
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