I'm assuming you mean "HyperTerminal" when you say hyperlink, unless you're using another program called hyperlink? In any event, if you can get it to work with HyperTerminal then you can open the "Basic Serial Write and Read" example that ships with LabVIEW. To replicate how HyperTerminal behaves you basically need a while loop around the read part. In other words, the case structure sorrounding the read gets replaced with a while loop. Since the device continuously send out data, you don't need the write part and you can essentially delete it.
You will eventually need to implement looking for the start of the measurement and the end. If the device ends a measurement with a special character, such as a linefeed, then you can configure the serial port connection to use a termination character and set the termination character to the one the instrument uses. The "Advanced Serial Write and Read" shows you how to configure the serial port to use a termination character to end a read. You can also use this example to start with since that already has a loop around the read. I suspect that the extra serial port parameter line flow control are not relevant to this setup, and you can leave them at the default value.
