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  1. Fritzfrederix

    P&ID norm ISA or ISO

    Hello, I changed a year ago from job, now at my new plant we are starting to draw P&ID's (finaly). They have selected the ISO3511 norm als there standaard but I used to work, in my former companies (chemical plants) with the ISA S5.1. What is the most common used norm in the chemical industry...
  2. Fritzfrederix

    SO2 recal

    Hello, Thus anybody know who to calculate SO2 mg/m³ to ppm thanks in advance
  3. Fritzfrederix

    reverse osmose

    Hello, Can we use water that's coming out a water treatmentunit of reverse osmose directly into our steamboiler? Iow is it already demiwater? Rudi
  4. Fritzfrederix

    Isolator block Zinc electrolyses

    Hello We're struggeling for many months with an isolator problem in the electrolyse plant. What's the problem: We've numeros cranes which or working above the elektrolyses celles and they or elektrical separated from the rest of the building. For this reason we use isolator blocks between the...
  5. Fritzfrederix

    Sulfur blokage

    Hello, We've got a small problem at our waterpurification installation. Our wastewater is on the one hand compensated with HCl and on the other hand with Javel(NaOHCl2). We use small water flushpots with our Redox and pH measurement probes. Those water flushpots our connected to our piping with...
  6. Fritzfrederix

    Use of OPC servers with legacy DCSes

    Hello, Connecting a TDC3000 through OPC is very unlikely. I'me not saying it isn't possible, but I would like to see how they going to connect to the APM or HPM cpu's. With our newer system (Experion) everything is possible but with the old TDC it's not economicly interesting. Now my question...
  7. Fritzfrederix

    Centrifugal pump with Freq. converter

    Hi, We've have a discussion about a centrifugal pump which is driven by an Frequency converter. I believe that your frequency converter only can use a small part of your pumpcurve. My collegue is saying that you can use the full scale off the pump. In other words you can use from 10 to 60 Hz of...
  8. Fritzfrederix

    PLC's for HVAC control.

    Hi there, I've installed recently a cooling compressor and Plc used was an Siemens S7-300. Next month were gonna install a bigger one and again were gooing to use a Siemens PLC but this time a S7-400H. Other PLC's used or Johnson Control, Steffa, Honeywell, DDC eso. Rudi
  9. Fritzfrederix

    ET200 module IS

    Hi Folks, Does anyone know what's the difference is between an IS-module and an ISP-module for an Intrinsic safe application Rudi
  10. Fritzfrederix

    Control valves engineering

    Quark, This was exactly what I was looking for. Thanks a lot Rudi
  11. Fritzfrederix

    Control valves engineering

    Hello, Is there somewhere on the web some good information/software for defining/engineering controlvalves for the chemical industrie? Any help is highly appreciated. Rudi
  12. Fritzfrederix

    SCADA/HMI packages

    Hi, I'm still missing one WINCC of Siemens. I've worked with WinCC ver 5.2 but ver 6.0 now also uses for scripting VBS they also changed from database Sybase to MSSQLServer. Also worked with Citect, Genesis, IC2000 and Intouch but not much differnce between those. Rudi
  13. Fritzfrederix

    Intouch syntax problem

    Hello, I'm strugling for a few days with a syntax error in some scripting code I wrote for Intouch. I'm trying to connect to an SQLServer. I can connect and disconnect but when I'm trying the function SQLSelect I always get an faultmessage...
  14. Fritzfrederix

    WinCC question

    Hello, I've found the solution, I just reduced the second screen and copied it into the first screen and made it invisible. So now everyting works in the background. Rudi
  15. Fritzfrederix

    WinCC question

    Hello, I'm using WinCC ver 6.0 and i've build several screens. One of those screens has to be active all the time, also when another screen is selected. How can I do this? Now the screen has to be displayed otherwise it doesn't work. Rudi
  16. Fritzfrederix

    Magmeter Accuracy?

    Hello, Coriolis meters worked for me, We have about 40 installed. We took them in our preventive maintenance program. Every two years we flush and clean them because our product is leaving a small film on the inside of the two tubes of the coriolis. Which have effect on the measurement...
  17. Fritzfrederix

    VBS problem

    Hello Salma, I've got one small thing left to ask you if you don't mind? I'm trying to make a Hardcopy of the screen. I know there is a special function for it but I would like to put it behind a button. I think that's possible but do you know the code in VBS? Thanks in advance Rudi
  18. Fritzfrederix

    VBS problem

    Salma, I didn't solve the problem yet, I really tried everything. I even tried Int(Cdate(V3)) and it was so obvious. Thanks
  19. Fritzfrederix

    WinCC ocx problem

    John, Thanks for the reply. The solution to my problem was installing Office because I used an OCX of microsoft. As simple as that
  20. Fritzfrederix

    VBS problem

    Hello everybody, I'm facing at the moment a small problem with VBS. I'm writing data from WinCC towards a SQL Server, that part works but with retrieving this data I got a problem. I send a date to a Table in an SQL Server WinCC (datatype) Tex tag 8 bit character set SQL (datatype)...

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