Does anyone have experience using a scaling file for a temp/resistance table? The file's location doesn't seem to be documented in the user guide... that, along with the location of the plw.ini file as well. I have version 6 of Picolog installed, and a Windows search comes up with nothing. Is the documentation out of date perhaps?
Quote from page 122 of the Picolog User Manual: "PicoLog and other Pico software products are provided with a set of .psc files that contain scaling information on a wide range of sensors."
The PicoLog User manual is for version 5 of the software and the files would be in the installation directory. PicoLog 6 is new, and a completely different piece of software, so I will need to check on how scaling files can be used as it hasn't been asked before.
For the DrDAQ you can create a dds file as shown in "Section 2.10.5 USB DrDAQ scaling files (.DDS)" of the DrDAQ User Guide and put this with the usbdrdaq.dll in "C:\Program Files\Pico Technology\PicoLog 6\resources"
Martyn wrote:For the DrDAQ you can create a dds file as shown in "Section 2.10.5 USB DrDAQ scaling files (.DDS)" of the DrDAQ User Guide and put this with the usbdrdaq.dll in "C:\Program Files\Pico Technology\PicoLog 6\resources"
There's no explanation about how to enter temp / resistance values, only volts. Do I have to figure out what the volts are for each resistance value? Perhaps an example table would be helpful... what our project is using is a 4kohm thermister with a non-linear curve. Here's a snippet:
The Signal Input channel has 100 kΩ pull-up resistors to 2.5 V, so with the resistance of the RTD from the signal input to ground you have a voltage divider which will map voltage to temperature. This information can then be used in a .DDS file.