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Table of Contents
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1
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1.1
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1.1.1
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1.2
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1.3
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1.4
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1.4.1
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1.5
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1.6
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2
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3
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4
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5
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6
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7
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8
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9
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10
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11
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12
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Levelogger Installation and Trouble Shooting Communication
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13
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1.1.1 Pressure Calibration
The Levelogger Gold is calibrated against a range of set reference points to an accuracy of 3 decimal places. The units of pressure are in pounds per square inch. The conversion factor for pounds per square inch relates to pressure as follows:
1 pound per square inch
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= 0.0689476 bar
= 0.703070 m
= 6.895 kPa
= 2.31 ft. H20 @ 4°C.
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During the calibration procedure, the Levelogger is fully submerged in a highly accurate water bath. The bath is set to 15°C and allowed to stabilize. The pressure is then calibrated to six separate pressure points covering the entire range of pressure for that particular Levelogger to check for any nonlinearity. The process is repeated again at 35°C to check for temperature effects. Once done, the Levelogger is approved after all specifications for accuracy, precision, stability and hysteresis have been met.
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