Automated Water & Effluent Ltd



AWE Ltd Watermark

Automated Water & Effluent Ltd Celebrates 35 Years of successful trading!

Happy Birthday Automated Water & Effluent Ltd.

pH Transmitter model P3436

We are pleased to announce this our 35th year in business! We officially started started trading on September 1st 1982.

Where has all the time gone?

Over those 35 years we have seen many changes to the products we are now supplying and the way we are supplying them. What is important, as much today as it was in 1982 or in 1973 when I started as an instrument engineer in the service department, is service.

Service is something we at Automated Water & Effluent Ltd pride ourselves on offering. You only offer a good service when you have a good product, and good knowledge.

Product knowledge is not something you learn by just reading the product data sheet or the handbook.

It takes years of experience working with the product and being on site with customers for the commissioning of the equipment and fault finding problems that are not listed in any hand books of common faults.

Then looking after the product for a customer, carrying out after sales servicing and calibration on a customer's installation.

This way you learn how a product performs over an extended time period. In the case of Automated Water & Effluent Ltd this time period is now 35 years and counting.

We have seen new products supplied, installed and commissioned and experienced how they have performed for our customers over the life of the product.

We still see customers using controller models APPL2 for pH and ACPL2 for conductivity which we supplied from 1986 to 1995, and our P7615 and C7615 which we supplied from 1995 to 2010.

These instruments are very often installed in poor conditions, controlling the pH, Redox, conductivity or measuring the discharge flow in waste or water treatment plants at the back of some industrial process.

That's our business!

Keith Young

Technical Tips:- Tank Level Measurement Accuracy

Measuring liquid level in a tank using an ultrasonic level transducer

While visiting a customer we were asked about the accuracy of our level measuring instruments when used to measure the volume of chemical reagent in a chemical storage tank.

The customer had purchased equipment elsewhere and was unhappy with the accuracy that they were obtaining.

The customers process included mixing and blending special chemical reagents as intermediaries which were then delivered to his customer for use in their products.

The ready mixed expensive chemical reagents were stored in several large diameter vertical tanks. The customer wanted to measure the volume of the tanks accurately, so that sufficient volume was available to fill the tanker with the required delivery volume.

The problem with measuring the volume in a tank is not with the level transducer, which, lets say, has an accuracy of ±1% of its full measuring range, which maybe fine.

But - when measuring the volume of the tank, the accuracy will not be ±1% of the tank volume because this will also include the diameter of the tank.

a 3.3 meter tall tank, 1.5m in diameter with a working height of 3 metres will hold 5303 litres.

The same tank with a 3 metre diameter will 21214 litres.

Both tanks are the same height and our transducer will measure to ±30mm, but each millimetre of level in the 1.5m diameter tank is equal to 1.77 litres, so the accuracy is ±53.04 litres.

However, each millimetre of level in the 3m diameter tank is equal to 7.071 litres, so the accuracy is actually ±212 litres; which is a lot of chemical reagent.

This could even worse if this was alcohol which attracts duty to HM Customs and Excise.

Our recommendations were to use a flow meter and batch counter to accurately batch the desired volume into the tanker for deliver to the customers site.

We are of course happy to supply batching systems to suit a wide range of chemical reagents.




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AWE Summer 2017 Watermark

The 2017 Summer Watermark is available as a PDF for printing or to read offline.

If you would like to receive email reminders when the Autumn Watermark is published then please fill in your contact details on the Past Newsletters Page or at the bottom of this page.

AWE Catalogue 2017

The 2017 AWE Catalogue from Automated Water & Effluent Ltd is now available.

If you would like to receive a copy of the 2017 catalogue with prices on our pH / Redox transmitters, and our new range of paperless chart recorders then please fill in your contact details on the Past Newsletters Page

If you require any more information on our products or services, then please don't hesitate to get in touch.

We offer replacement electro-chemical sensors, instrumentation, as well as a number of engineered solutions including our process control systems and control panels, or backplate systems, dosing skids and cabinets.

Whether it's water treatment, process control or effluent treatment, our engineering team have the experience and the expertise to advise on our engineered solutions to assist with your requirements.

For more information on our systems or to discuss a specific system please don't hesitate to get in touch on 01785 254 597 or by emailing sales@awe-ltd.co.uk and we will be happy to discuss your process or requirement.

Contact AWE Ltd sales on 01785 254 597 for more information or to purchase our products.