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Microbridge Rejustor™ Design Challenge Official Entry |
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Title: |
Rejustor improves the pH Meter |
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Abstract: |
A pH meter is used to measure the acidity or alkalinity of a solution, semi-solid, soil and
other substances. A pH meter can be implemented in electronics with special probes.
The probe output is a potential of about 0.05916V per pH unit. The probes also have a
high input impedance of the order of 50 to 1000 Mohm. From this we get an estimate
of the accuracy needed in these types of instruments.
The advantages provided by rejustor's in this application are,
1. Better temperature compensation for the probe + solution temperature
2. Better / easier gain adjustment for probe in the probe amplifier stage
3. Better / easier gain adjustment for the offset adjustment.
4. Correcting temperature related(not solution temperature) offsets in the offset
amplifier stage |
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Submitted By: |
seenath |
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Submitted On: |
10/2/2007 |
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Total Views: |
1040 |
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