Re: Answer to hardware requiremnts for controlling RH of air
Hello, More than likely you will need to put an equation in your application. Here is a simple example of how the application would flow: 1. Take a current measurement from the Omega using the FP-AI-110. 2. Use an equation to convert the current to units that are meaningful. 3. Use another equation to determine what voltage needs to be sent out to the MKS. 4. Use the FP-AO-210 to produce a voltage. 5. The MKS receives the voltage and does some action. You do not need to use Matlab scripts. More than likely, you can do all of your equation coding in LabVIEW by using the Math pallette or you can use a formula node and program your formula like C code. You may want to take a looks at some example programs that ship with LabVIEW for assistance. Go to Help >> Find Examples and take a look.
Re: Answer to hardware requiremnts for controlling RH of air
Hi Thanks for your reply. I am new to using labview and hence having difficulties with programming my application. I also wanted to ask you that I would need to put in an equation which calculates the RH of the mixture of dry air steam and stream of known RH for this application. what would be the best way? I am not familiar with incorporating matlab scripts into labview. Here are the information you asked for: Field point modules: FP-AI-110 FP-TC-120 FP-AO-210 Labview version 6i The omega RH_4 gives a current output ranging 0.0035-0.021 Amps The MKS takes input volatage ranging 1-5 Volts and gives corresponding flows between 0-20 lpm. Please let me know if there are more questions. I look forward to your reply. You could email me at [EMAIL PROTECTED] thanks manish
Re: Answer to hardware requiremnts for controlling RH of air
Hello, Thank you for contacting National Instruments. I will need some additional information in order to make a good recommendation on how to program this application. From your post, it appears that you would like to read the voltage from the RH sensor and send a voltage to the MKS using your FieldPoint hardware. Please let me know if this is incorrect. Here are my questions: 1. What FieldPoint Modules do you have? (ie. FP-AI-110) 2. What version of LabVIEW do you have? 3. What range of voltage does your RH sensor produce? 4. What range of voltage can your MKS receive? I look forward to hearing from you. Simply reply to this posting. Regards, Bill B Applications Engineer National Instruments
