Matthew, thank you for your advice. Now I know a little more about what can be measured, I am thinking that we can capture all the information I could ever need. Can you suggest a device that will collect all the following information? We are an electroplating company with 10 vats/rectifiers. I would like to measure the following information from each vat,
A) Voltage - as discussed earlier being +/- 12V dc.
B) Current - at the moment we have simple ammeters reading 0-75mVs generated by shunts in one of the dc busbars.
C) Temperature - at the moment we have 'J' type thermocouples connected to digital temperature controllers which operate heaters/cooling coils.
3 measurements per vat X10 = 30 channels. Will one unit do the lot? I look forward to your reply. Many thanks, Spencer.