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8 in Red Meter installed beside a nuclear density gauge at a Utah phosphate and potassium plant.

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/ / / Utah

60 days beside a nuclear gauge: phosphate and potassium, Utah

An 8 in Red Meter ran in series with a nuclear density gauge on the main process line, on phosphate and potassium. Average operating pressure was 242 ± 8 psig.

Prose

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How the comparison was run

Both instruments ran under normal production for a 60-day evaluation. Three sections of 20 to 32 hours each were compared. Both systems were calibrated before testing.

The Red Meter's output rate is 1 Hz, a new reading every second.

Results table

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Specific gravity side by side with the nuclear gauge

Across the trial a Red Meter read within ±2.5% of the nuclear reference, with no radioactive source.
SectionHoursNuclearThe Red MeterDifferenceStd. dev.
A, dense phosphate211.3211.321±0.0%0.047
B, lighter potassium321.1021.130+2.4%0.018
C, transitional feed201.1191.116-0.2%0.022

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