Check battery voltage before the charge and after overnight charge. Your right about the 8 volt charger. You can use an automotive charger but will have to watch that it does not overcharge the battery. The 12 volts on 8 volt will charge it, but the best would be a 24 volt charger, where you could charge 3 at a time.
A high accuracy electronic cold junction compensation circuit maintains typical system accuracy of Â±0.2Â°C over an ambient temperature range of 15 to 35Â°C. Individual offsets may be added to each input in software to facilitate individual calibration of each channel. For information on our wide selection of Type T Thermocouple temperature probes.
Relative humidity range is 20 to 90%, resolution is 1% RH, and accuracy is Â±8%. Memory recalls highest and lowest temperature and humidity readings. Clock shows time of day to the minute, with accuracy to 0.0190 seconds. Easy-to-read LCD reports temperature with accuracy to Â±1Â°C and resolution to 0.1Â°C/Â°F.