Small water treatment plants, secondary disinfection plants etc. tend to suffer from similar problems wherever they are in the world. The first is lack of communications SCADA infrastructure, the cost of which to install can be prohibitive. The second is the lack of a central DCS control infrastructure, again the installation of which can be cost prohibitive. The third is the remote location. Often these water treatment plants are in remote and difficult to access locations.
As increasing environmental regulations are being applied to industry all over the world there is a requirement for a single controller that can measure the online pH of multiple streams, can provide the control to automate pH neutralisation, can datalog the whole pH neutralisation process and can communicate back to the appropriate personnel if anything goes wrong.
The whole range of pHSense pH meters can be fitted with additional sensors such as chlorine or ORP. Please ask your local distributor for more details.
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Whatever the process being monitored is, there is often something in the sample water capable of fouling a sensor, and therefore causing erroneous results. The obvious solution to this problem is to clean the sensor, but how regular should inspection and cleaning programs be for each piece of instrumentation? Too regular and the inspection and cleaning regime is time consuming and unnecessarily costly. Not often enough and the instrumentation will give false results and probably fail prematurely.
Pi’s AutoClean and AutoFlush systems can give trouble free and fouling free functioning of sensors for weeks, if not months, at a time.
If using air to clean a DO sensor the system can also automatically verify that the sensor is still responding correctly, removing any need to remove the sensor from the sample for months at a time.
| Document | Type | Size |
|---|---|---|
| pHSense | Brochure | 635kB |
| pH Selection | Brochure | 744kB |
| The Effect of Temperature on pH | Technical Note | 583kB |
| pH Probe Maintenance | Technical Note | 584kB |
| Probe Fouling | Technical Note | 459kB |
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