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.
Bimetal Thermometers  Ashcroft bimetal thermometers are available in a variety of case styles, temperature ranges, and Each Ashcroft industrial bimetal thermometer is backed by a limited five year warranty. Each thermometer is manufactured to a standard accuracy of 1% of span. Gas-Actuated Thermometers  Ashcroft Duratemp gas-actuated thermometers are available with direct and remote mount case styles. Accuracy is within 1% of span. Thermowells  Thermowells must be used on any application where the stem of the bimetal thermometer may be exposed to pressure, corrosive fluids or high velocity.