Looking at the tech spec sheet, this unit appears to be (Obviously) aimed at industrial quality control rather than scientific accuracy in engine oils...in fact it seems of scant use in engine oils period.
The number 3 rotor can do 0.3 to 13 dPas. 0.3dPas is 30Cp.
CP and Cst are used at BITOG interchangeably, which they ARE when measuring water as the relative density is "1", but we are using oils, with densities considerably less than 1.
http://www.bobistheoilguy.com/forums/ubbthreads.php/topics/3742278/Cp_and_Cst_-_the_confusion_bet
So min range for this machine, assuming density of 0.9 (high for a multigrade) is 33Cst...and as we've been told, all engines are "designed" for "10"...if the indication in that range is 0.1dPas (likely), then it only measures in 11Cst increments.
So this machine can/could be used for fun, but only around the KV40 range...or some other mid point, bit clearly no 100C, even with the thickest Australian oil.
Looking at the measurement errors and reproducability, they are offering 10%+/-, +/- 1 value of indication, and a reproducibility of 5%.
Further, if you are varying the temperature, you need to be aware of how accurately you can hold that, and then calculate the density. You can get the KV40, but the density is at 15C.
So even if it could measure "10", it would be somewhere between 9 and 11 at the best.
I'd spend my money piece by piece at Blackstone, and get more and other values out of it too.
