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Calcimeter

Gauge-Read Model #152-95

Recording Model #152-96

Instruction Manual

Updated 1/27/2011

Ver. 2.2

OFI Testing Equipment, Inc.

11302 Steeplecrest Dr. · Houston, Texas · 77065 · U.S.A.

Tele: 832.320.7300 · Fax: 713.880.9886 · www.ofite.com

©

Copyright OFITE 2011

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Summary of Contents for 152-95

Page 1: ...Model 152 95 Recording Model 152 96 Instruction Manual Updated 1 27 2011 Ver 2 2 OFI Testing Equipment Inc 11302 Steeplecrest Dr Houston Texas 77065 U S A Tele 832 320 7300 Fax 713 880 9886 www ofite com Copyright OFITE 2011 ...

Page 2: ...nts 3 Safety 4 Setup 5 Recording Calcimeter 5 Gauge Read Calcimeter 6 Test Procedure 7 Creating a Calibration Curve 9 Chart Recorder 11 Maintenance 13 OFITE 11302 Steeplecrest Dr Houston TX 77065 USA Tel 832 320 7300 Fax 713 880 9886 www ofite com 1 ...

Page 3: ...curve is created by reacting HCl with pure reagent grade CaCO3 By using a known weight of CaCO3 reagent you can deter mine the relationship between the amount of pressure released and the weight of CaCO3 in the sample Since all reaction cells are slightly differ ent this relationship will be different for each cell Therefore a calibration curve is required to obtain accurate results The calcium ca...

Page 4: ... 152 96 3 Stainless Steel Case 152 96 4 Chart Paper for Minigraph 152 96 5 Pressure Transducer 152 96 6 Porcelain Mortar 65 mL 152 96 7 Porcelain Pestle 152 96 8 30 Gear Train 152 96 10 Power Supply 152 96 11 Female Cable Jack 152 96 12 Male Cable Plug 152 96 13 Insulated Banana Plug Black 152 96 14 Insulated Banana Plug Red 153 02 Brush Graduate 11 2 103 4 153 18 Glass Graduated Cylinder 10 mL 2 ...

Page 5: ...of accidental exposure get med ical attention immediately Refer to the Material Safety Data Sheet MSDS for more information on Hydrochloric Acid The OFITE Recording Calcimeter uses an electrically powered transducer and recorder to record the pressure in the reaction cell Observe the fol lowing safety considerations at all times 1 Make sure the power switch is off before connecting the power cable...

Page 6: ...e red cord goes into the red plug and the black cord goes into the black plug 4 Connect the transducer to the power supply The cable connectors are keyed to prevent an incorrect connection Be sure to tighten the cable lock to keep the connection secure 5 Plug the chart recorder and power supply into an appropriate AC power outlet OFITE 11302 Steeplecrest Dr Houston TX 77065 USA Tel 832 320 7300 Fa...

Page 7: ...ipment Inspect each piece to ensure everything is clean and in good operating condition Inspect the cell cap o ring for cracks or wear OFITE 11302 Steeplecrest Dr Houston TX 77065 USA Tel 832 320 7300 Fax 713 880 9886 www ofite com 6 Gauge Bleed Valve Cell Cap O ring ...

Page 8: ...e reaction cell and top Make sure both are clean and dry c Make sure the reaction cell o ring on the top and the o ring on the bleed valve are in good condition Use a light coating of vacuum grease on the o ring seals Make sure all pipes or tubing connec tions are tight and do not leak d Hold the reaction cell in a horizontal position and slide one piece of paper and its sample to the bottom Brush...

Page 9: ...e dolomite pressure To calculate the dolomite pressure subtract the CaCO3 pressure 30 second reading from the total pressure 30 45 minute reading 6 Refer to the graph below to interpret the pressure readings 7 Use the equations below to calculate the percentages of CaCO3 and dolomite For values of Slope refer to the Creating a Calibration Curve section below CaCO3 Dolomite OFITE 11302 Steeplecrest...

Page 10: ...g acid into the pressure gauge or pressure transducer As soon as the reaction has started observe the rapidly rising pressure Record the peak pressure to the nearest 0 1 PSI 0 5 kPa as the CaCO3 pressure for the sample weight used If a mechanical shaker is available it may be used to agitate the cell rather than swirling the reactants Agitate the sample for 10 minutes 4 Repeat steps 2 and 3 for ea...

Page 11: ...alcium Carbonate and Dolomite As described above Slope 20 PSI for a 1g sample therefore CaCO3 5 Pressure Dolomite or Dolomite 4 6 Total Pressure CaCO3 Pressure OFITE 11302 Steeplecrest Dr Houston TX 77065 USA Tel 832 320 7300 Fax 713 880 9886 www ofite com 10 Total Pressure CaCO3 Pressure 92 100 1 g 20 Sample Calibration Curve Pressure 100 1 g 20 ...

Page 12: ... has a range from 0 to 15 PSI However the chart readings represent milliamperes not pressure In order to convert the reading to PSI figure the percentage of full scale that is being displayed Then multiply that percentage by 15 This will give you the PSI reading The chart paper included with the recorder shows 10 large divisions If the chart paper shows a value on the third division 30 of full sca...

Page 13: ...ations fit into the sprocket and drive rollers 8 Press the supply roll tension arm toward the left side plate Set the supply roller pins into the notches of the side plates and snap the roller retaining lock clips down into the lock position 9 Pull the chart paper out from the supply roll until it extends out beyond the top of the door 10 Press down on the right hand side plate Flip the chassis la...

Page 14: ...arrel and diaphragm for build up of calcium deposit over long periods of time A warm Chlorox wash should clean these parts 4 To check for leaks pressurize the instrument as described in Creating a Calibration Curve above using a 6 g sample Let the unit stand for at least one hour The pressure within the reaction cell should remain stable unless leaks are present Calibration Data Does Not Give a St...

Page 15: ...the power switch on the recorder is ON 3 Check the plug and receptacle going into the recorder to make sure they are making a good connection 4 Check the plug and receptacle connecting the transducer to the recorder Make sure this plug and receptacle are making a good connection OFITE 11302 Steeplecrest Dr Houston TX 77065 USA Tel 832 320 7300 Fax 713 880 9886 www ofite com 14 ...

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