Anyone know how to switch from 700 scale to 500?
If measuring EC, then the scaling is not addressed but on a table used to convert EC to PPM. No change in the meter is necessary.
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The manual says it can be switched but it doesnt show how really. Since im using general hydroponics nutrients I wanted it to read the 500 scale instead of 700. Make life easier lol
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Sunny beaches i just learned something new. Thanks Dave.
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@Audiofreak Glad I could help
I love 4 steps to accomplish one thing. I like my Apera PH20 pen but use the Bluelab conductivity pen for TDS/PPM. It has a separate button for units 500 700 F C. My brain can handle that.
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I agree with @beardless . I use the 2 different ones, also. I don’t want to hurn my brain with that new math. 
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Yeah,I kinda wish I went with a bluelab TDS meter instead. I love my apera ph meter though.
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Now that it is figured out and the learning curve is behind you, it will be a good piece of equipment to have.
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