MC-II Plus EXP Maintenance - Cameron

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MC-II Plus EXP Flow AnalyzerSubstituting in the formula:The divisor is rounded off to 270.246 since the MC-II Plus EXP will take only the six most significantdigits of the divisor.Substituting into the formula, the rate multiplier is:The rate multiplier is rounded off to 319.708 since the rate multiplier entry will accept only the sixmost significant digits.Note: The rate multiplier in this example was determined by the time constant divided by thepreviously calculated divisor. This will save a calculation step when calculating the rate multiplier ifthe flow rate is in the same units as the volume (in this example cubic meters for volume and cubicmeters per day for flow rate). When the volume and flow rate are to be in different units, such ascubic meters and liters per hour, the volume divisor and divisor for the rate multiplier must becalculated separately.The divisor and rate multiplier are entered in the same manner as the divisor and rate multiplier wereentered in the Liquid Measurement Using a Calculated Divisor and Rate Multiplier example.Time Out FeatureThe MC-II Plus EXP has a Time Out Feature, which prevents it from being left in theCalibrate Mode indefinitely. If the MC-II Plus EXP is left in the Calibrate Mode and nokeypad activity is seen for approximately 10 minutes, it will return to the Run Mode. If theunit is in Calibrate Mode and a Time Out occurs, any data that has been input with theENTER key being pressed afterward will be saved to memory. Any data that has been inputwithout the ENTER key being pressed afterward will not be saved when Time Out occursand the data entered from a previous calibration will be retained.Presetting VolumeTypically when a new totalizer is placed in service, the accumulated volume will start at 0.In some applications where an existing piece of instrumentation is being replaced, it ispreferable to resume the volume where the former instrument left off. The MC-II Plus EXPhas the capability to accept a preset volume. The volume unit of measurement (BBL, GAL,etc) and the decimal position for the volume (0.0, 0.00, etc.) must be defined prior topresetting the volume.22 October 2009
MC-II Plus EXP Flow AnalyzerThe steps required to preset a volume are:1. Enter the calibration mode by pressing the ACCESS key.2. At the prompt tot Eng, press INCR to select BBL, GAL, M³, MCF or USER. PressENTER.3. At the prompt tot d.P, press INCR to change the decimal point position for the volume.Press ENTER.4. At the prompt SEt tot, press INCR to toggle between yES or no until yES is selected.Press ENTER.5. At the prompt SEt.tot, use INCR and STEP to change the volume. The currentlyselected volumetric unit of measure will be displayed and the current decimal point willbe indicated. Press ENTER.6. At this point, the volume has been preset. Pressing ACCESS exits the Calibrate Modewithout making any further changes, or the remaining steps may be implemented.Setting Flow Rate FilterThe flow rate filter smoothes sudden changes in the rate indication and 4-20 mA rate outputdue to variations in flowmeter frequency. In all cases, the display will still update once persecond.The degree of filtering is set by accessing the rAtE.dLY selection in the calibration menu. Itis located just after the rAtE.EnG selection.From the rAtE.dLY selection, you may choose any of four filter settings, as describedbelow.DisplaySettingnonEFilter disabled – factory default setting5 Time equal to 5 rate samples to reach 90% of final value10 Time equal to 10 rate samples to reach 90% of final value20 Time equal to 20 rate samples to reach 90% of final valueThe nonE setting disables the filter. At this setting, the calculated flow rate tracks the inputfrequency so any variation in the meter frequency will produce the correspond-ing variationin the rate indication and 4-20 mA rate output.Each subsequent setting of 5, 10 and 20 will dampen the changes in flowmeter frequency,resulting in an increasingly smooth display of the flow rate.The steps required to change flow rate filtering on a calibrated unit are:1. Enter the Calibrate Mode by pressing the ACCESS key.2. Accept the current settings by pressing ENTER until the rAtE.dLY prompt is displayed.October 2009 23
Page 1 and 2: NUFLO TMMC-II Plus EXPFlow Analyzer
Page 3 and 4: Table of ContentsIntroduction .....
Page 5 and 6: MC-II Plus EXP Flow AnalyzerIntrodu
Page 7 and 8: MC-II Plus EXP Flow AnalyzerInstall
Page 9 and 10: MC-II Plus EXP Flow Analyzerand sel
Page 11 and 12: MC-II Plus EXP Flow AnalyzerLCD. It
Page 13 and 14: MC-II Plus EXP Flow Analyzer4. At t
Page 15 and 16: MC-II Plus EXP Flow Analyzersea lev
Page 17 and 18: MC-II Plus EXP Flow Analyzer4. At t
Page 19 and 20: MC-II Plus EXP Flow AnalyzerPress S
Page 21: MC-II Plus EXP Flow Analyzer9. At t
Page 25 and 26: MC-II Plus EXP Flow AnalyzerThe Pul
Page 27 and 28: MC-II Plus EXP Flow AnalyzerCaution
Page 29 and 30: Appendix A - InstallationGeneralApp
Page 31 and 32: Appendix A MC-II Plus EXP Flow Anal
Page 45 and 46: Appendix B MC-II Plus EXP Flow Anal
Page 47 and 48: Appendix B MC-II Plus EXP Flow Anal
Page 49 and 50: Appendix C MC-II Plus EXP Flow Anal
Page 57 and 58: Appendix D MC-II Plus EXP Flow Anal
Page 63 and 64: Appendix E - Data TablesAppendix E
Page 65 and 66: Appendix F MC-II Plus EXP Flow Anal
Page 67 and 68: Appendix G MC-II Plus EXP Flow Anal
Page 69 and 70: Appendix H MC-II Plus EXP Flow Anal
Page 71 and 72: Appendix H MC-II Plus EXP Flow Anal
Page 73 and 74:
Appendix H MC-II Plus EXP Flow Anal
Page 75:
WARRANTY - LIMITATION OF LIABILITY:
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MC-II Plus EXP Maintenance - Cameron

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