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thompsonr

  • Posts: 36
calibration fluid
« on: December 04, 2008, 04:54:26 pm »
I today tested my tds meter in 20ppm calibration fluid.I t read 25ppm --5ppm out.
I future when I take a reading should I deduct 5 (ie a reading of 012 would really be 007) or should I deduct 25% (ie a reading of 012 would really be 009)?
I have got di reading of 005 and this would be the difference between 000 and 003-004
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bonsey

  • Posts: 203
Re: calibration fluid
« Reply #1 on: December 04, 2008, 04:58:04 pm »
just get a new tds meter  ;D
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steven ainger

  • Posts: 1953
Re: calibration fluid
« Reply #2 on: December 04, 2008, 05:00:10 pm »
you can adjust the tds meter with a small screwdriver at the rear
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Elginn

  • Posts: 235
Re: calibration fluid
« Reply #3 on: December 04, 2008, 05:02:02 pm »
Your using the wrong TDS Fluid
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steven ainger

  • Posts: 1953
Re: calibration fluid
« Reply #4 on: December 04, 2008, 05:03:22 pm »
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RSWindows

  • Posts: 286
Re: calibration fluid
« Reply #5 on: December 04, 2008, 05:05:38 pm »
i may be wrong here but if you get a higher caliberation fluid like say 337TDS fluid then you can get a more accurate differential reading.
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The Seven Bays Window Cleaning Company

  • Posts: 497
Re: calibration fluid
« Reply #6 on: December 04, 2008, 05:17:06 pm »
RO Man recomends using a calibration fluid nearer to the TDS you require - so a 20ppm calibration fluid is the right stuff for us.
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THE SEVEN BAYS WINDOW CLEANING COMPANY

Elginn

  • Posts: 235
Re: calibration fluid
« Reply #7 on: December 04, 2008, 05:43:08 pm »
Quote from: The Seven Bays Window Cleaning Company on December 04, 2008, 05:17:06 pm
RO Man recomends using a calibration fluid nearer to the TDS you require - so a 20ppm calibration fluid is the right stuff for us.

You better inform all the W/C suppliers who are suppling us with 342 ppm to calibrate are TDS meters with then.
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The Seven Bays Window Cleaning Company

  • Posts: 497
Re: calibration fluid
« Reply #8 on: December 04, 2008, 05:51:08 pm »
Nothing to do with me - just stating what was on the Ro-Man website.

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THE SEVEN BAYS WINDOW CLEANING COMPANY

steven ainger

  • Posts: 1953
Re: calibration fluid
« Reply #9 on: December 04, 2008, 06:14:54 pm »
Quote from: The Seven Bays Window Cleaning Company on December 04, 2008, 05:51:08 pm
Nothing to do with me - just stating what was on the Ro-Man website.



thats exactly what i was going to say
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Pages: [1]