Cannon D155 Instruction & Operation Manual

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Cannon D155 Instruction & Operation Manual Manual pdf 25 page image

22CANNON ® D155 Density Meter Instruction & Operation ManualVersion 1.1c – March 2017; CANNON® Instrument Company2139 High Tech Road • State College, PA • 16803 • USA3-4. Clean measuring cell after measurementsThe measuring cell must be cleaned when a different type of sample is to be measured or when a seriesof measurement is complete. Follow the following steps:Instrument with optional peristaltic pump1) Remove the sampling tube from the sample and wipe with tissue paper.2) Put the sampling tube into the cleaning solution/solvent and draw the solution/solvent with [PUMP]key. For more effective cleaning, we suggest that you pull out the tube from the solution/solventmomentarily (while the pump is running) - several times to draw in some air. Continue pullingsolution/solvent until roughly 10 mL have been pulled through the cell. Some samples may requiremore than 10 mL of cleaning solution/solvent to effectively remove the sample from the cell (seenote below).3) Take the sampling tube out of the cleaning solution/solvent. When the solution/solvent is clear fromthe sample tube, press [PUMP] key to stop the pump.4) Remove the sampling tube from the cleaning solution/solvent and wipe with tissue paper.Instrument without pump1) Remove the sample syringe from the sample inlet and wipe the inlet with tissue paper.2) Ensure the sampling tube (outlet) on the D155 (upper port) is placed in a suitable waste containersuch as a beaker or bottle.3) Fill a 10 mL syringe with cleaning solution/solvent and inject the solution into the cell. Periodicallyremove the syringe and re-insert to allow air to be introduced into the cell for more effective cleaning.Repeat this step if necessary. Some samples may require more than 10 mL of cleaningsolution/solvent to effectively remove the sample from the cell (see note below).Note:When viscous samples are measured, rinse the measurement cellthoroughly with the cleaning solvent/solution to remove the sample.Correct measurement results cannot be expected if any residue of theprevious sample remains in the measuring cell.