From: curd@notformail.com   
      
   On Fri, 02 Feb 2018 16:02:52 -0800, Andy wrote:   
      
   > I bought an Excel XL 830L multimeter with the understanding that it was   
   > a RMS voltmeter.   
   >   
   > I also have UEI ElectroMate DM 200.   
   >   
   > When I checked the output of my APC unit with both meters, the readings   
   > were about the same.   
   >   
   > Is there a way to tell if a meter is an RMS type?   
      
   Simplest way is take a reading of the mains electricity in your house. If   
   you're in europe it should come out at about 230-240VAC and the meter (if   
   it's true RMS) will agree with that. I think in America and Japan the   
   domestic mains voltages are very different but you will no doubt know   
   what it should be in your own home country and a true RMS meter will   
   agree with it.   
      
      
      
      
      
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