Lamotte DO 4000 Dissolved Oxygen Meter User Manual

INITIAL/REPLACEMENT PROBE CALIBRATIONA precalibration procedure must be performed on a new meter andprobe or each time a new probe is attached to the

CALIBRATIONThe DO 4000 should be recalibrated daily using one of the followingmethods to account for changing environmental conditions. For mostaccura

SATURATED WATER USING A CALIBRATION CHARTThe saturated water calibration using a chart requires more carefulaeration and assumes the water is saturate

SOLUBILITY OF OXYGEN IN WATER°C O2°C O2°C O2°C O20.0 14.621 13.0 10.537 26.0 8.113 39.0 6.5151.0 14.216 14.0 10.306 27.0 7.968 40.0 6.4122.0 13.829 15

SATURATED WATER USING A WINKLER TITRATIONThe saturated water method using a Winkler titration to check theoxygen level is limited by the accuracy the

ZERO CALIBRATIONDissolved Oxygen meters often include a zero point calibrationprocedure. Generally the most common source of zero point drift isfillin

TESTINGThe DO 4000 has a constant polarization feature, which eliminates the15 minute warm-up time between periodic use. If the meter has notbeen set

PERCENT SATURATION READING1. Press “%SAT” button to turn meter on. 2. Set the Salinity Compensation knob to the salinity of the samplewater. 3. Keepin

TROUBLESHOOTINGIf dissolved oxygen readings appear erratic or unusual, there are severalthings which can be checked.1. Check that the BAT Low indicato

METER CARECONNECTING THE PROBEIf it is necessary to remove probe from the meter, reconnect the probewith the arrow on the probe connector facing up. S

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CLEANING THE PROBETHE CATHODE1. Remove membrane cartridge, wipe probe dry.2. Lay crocus paper on a table or other flat surface.3. Holding the electrod

WARRANTY INFORMATIONPACKAGING AND DELIVERYExperienced packaging personnel at LaMotte Company assure adequateprotection against normal hazards encounte

REPLACEMENT PARTS & ACCESSORIESDESCRIPTION CODEDO probe & cable 1913Membrane replacement package (includes 2787-G & 3 membrane cartridges

LaMOTTE COM PANYHelping Peo ple Solve An a lyt i cal Challenges®PO Box 329 ♦ Chestertown ♦ Mary land ♦ 21620 ♦ USA800-344-3100 ♦ 410-778-3100 (Out sid

TABLE OF CONTENTS PageSpec i fi ca tions ... 4Dis solved Ox y ge

SPECIFICATIONSMEASUREMENTS1. Oxygen concentration expressed in parts per million (ppm) of O22. Oxygen concentration expressed as percent (%) of oxygen

DISSOLVED OXYGEN BASICSOxygen, in the form of a gas, is a major component of air. Humans,plants, and animals use this oxygen to respire, or breathe. G

The dissolved oxygen test is also important to operators of waste waterfacilities, both at the operation site and in the lab. Dissolved oxygenlevels a

FUNCTIONS OF THE DO 4000 METER7

ASSEMBLING THE PROBE GOOD PRACTICE GUIDELINESKeep the membrane wet at all times. Between readings the probe can be stored with the tip in a beaker of

POLARIZATIONPolarization is the term used to describe when the probe has reachedequilibrium, and is able to produce stable, reliable measurements. For