Is there a way to short the SensION+ pH1?
Shorting test for the sensION+ pH1 meter
Yes - this can be done by shorting the +/- terminals on the electrode input using a paperclip or piece of wire. When shorted out, the mV readings should go to 0.0 (+0.2mV) and you should have a stable reading. Then removing the short, the readings should jump around or peg out at the upper or lower limit (i.e. 2000mV). Don't forget to press the read key again, as the meter most likely stabilized when the meter was shorted. If these check out, continue to troubleshoot the meter/electrode as normal.