Hi Brad, Where did you get this ***from. You have not described a TDS-1. For sure you don't know how it works. Try reading the spec sheet. :-) Then take one apart and make the circuit diagram. Then put some good test equipment on it and see what it does. :-)
Bless you Bob Lee Brad Kirby wrote: > The Hanna TDS-1 has a accuracy of +- 10 ppm (@ 20 deg C. or 68 deg F) > . > When calibrated with the 800 ppm packets, your readings have a range > of 20 ppm. Your distilled water that measures 0 ppm with this meter > could actually have 10 ppm of Total Dissolved Solids. Also a CS > solution that is actually 10 ppm may have a meter reading range from 0 > to 20 ppm ( 100% error). The TDS-1 was designed to measure ppm in the > range 200 ppm ( 5% error) or higher. Both the TDS-1 and the PWT are > conductive meters. They function electrically identical by passing a > current between two electrodes and performing temperature, range and > calibration factors built into each unit. I own a TDS-1. -- oozing on the muggy shore of the gulf coast [email protected]
