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Hi I work with PLC and SCADA applications. Reacently we have been looking at monitoring our systems remotely, changing and monitoring variables via SMS, remote access to HMI etc. I have been thinking strongly about making a web page that would allow me to display and alter variables from any...

Hi We are in the process of designing a septicity dosing system for a waste water pumping station to reduce the H2S04 further up the rising main, we are planning to dose with Nutriox (calcium nitrate) From looking at existing systems I can see that the inputs to the system are mainly the level...

Hi Im involved in a project where I am setting up a system to remotely monitor the energy consumed by a industrial plant with a number of motors, pumps etc. Im in Ireland. I have gotten to the stage where I can send a CSV file each hour that lists the instantaneous KW, KVA, KVAR, power factor...

Hi I have come across Yaskawa J1000 family of inverters and am considering purchasing one to control a pump on a variable frequency. I have read a few posts in this forum where the voltage used was slightly different to the rating of the inverted and this led to over excitation and tripping...

Hi Is there a calculator or rule of thumb to use for selecting start and run capacitors for single phase inductance motors if i know the supply voltage and current ratings for the motor. I normally refer back to the manufacturer but was hoping for an alternative method. Justin

Hello Im searching for a pump for lifting water from a sump through a filter. The max distance to lift is 1.5 metres and the filter requires another 0.2 bar of suction. I require a pump with suction head of 4 metres but the flow rate must be kept at 70 l/hour. Does anyone have any...

Hi does any one know of a competitively priced Ultrasonic level sensor that will provide a 4-20mA, 0-5v or 0-10v output for use in a PLC? The sensor application is for waste water and will be used on sump tanks of max depth 10 metres. Thanks Justint

Hi Has anyone ever heard of a conductive level probe that is based on one probe only with incremental pairs of contacts at levels along the probe? I know such a device exists but any search string results in probes with 2 or more electrodes or pendular probes. Any help appreciated Justin Trainor