Can I run YES instruments from batteries alone for portable operation?
Yes, for most instruments except for the TSI-880 and RSS/UVRSS-1024 systems which have internal heaters. YES products can be setup to run on DC. Use a lead-acid type RV/marine-type deep cycle battery. YESDAS-2 (which runs the UVMFR, MFR, SDR), will keep a battery float charged while plugged into the line. But if run “barefoot” a small wire jumper needs to be added from the “B+” to the “P+” terminal. Keep in mind that depending on the model, DC current requirements can be significant. Refer to the product data sheet to determine the maximum current drain for each sensor. If you will be making long term, remote measurements (off the AC power grid), you will need to plan how to keep the batteries charged. If you plan to back up the batteries with solar panels or a wind generator, this is possible but you will want to carefully size the system based on expected solar insolation and/or wind levels at your site. The technology for providing off-grid power tends to be well developed and often
