Computrac MAX-1000 User's Manual - Arizona Instrument

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12.1.9 If this is the first test of the day, discard the results of this test for stability reasons.12.1.10 Record the final result. The value should fall between 37.48 and 37.52.12.1.11 If the results do not meet this criteria a weighing error has occurred.12.1.12 The most common causes of such errors are bent or dirty sample pans, ordebris falling into the balance shaft interfering with the pan support’s ability tofreely move up and down.12.1.13 After the instrument is cleaned:! Use a new sample pan and repeat the weight test five more times.! Calculate the results.! If the results are still outside the specified range, call AZI Customer Service forassistance.12.2 PRECISION WEIGHT TEST12.2.1 Run five weight tests and record the results.12.2.2 The recorded results should fall within the following.NUMBER OFSAMPLES5MEAN 37.48 TO 37.52STANDARDDEVIATIONCOEFFICIENT ofVARIATIONLESS THAN 0.01LESS THAN 0.03%12.3 SODIUM TARTRATE TESTThe sodium tartrate test verifies the heater and force balance operation. Sodiumtartrate dehydrate is a chemical with a known moisture concentration which givesup moisture at temperatures greater than 120 o C.Because of its consistent moisture concentration, it is used as a standard inmoisture measurement using oven or titration methods. To obtain consistently56
eliable results, use a high quality or reagent grade (ACS certified) granular sodiumtartrate. Avoid using sodium tartrate that contains lumps or has an unevenconsistency since lumps indicate the absorption of ambient humidity and will yieldvariable results. Sift the sodium tartrate through a #20 sieve to eliminate anylumps or large crystals that pop off the sample pan during the test.The test uses approximately 8 grams of sample and is run at 150°C. Resultsshould be within a range of ±0.100% of the assayed value on the label of thechemical. (typically 15.61% - 15.71%)12.3.1 From the FINAL TEST screen, press the “Memry” key.12.3.2 If the highlight bar is not already on it, use the up and down arrows to select“01 ID: TARTRATE.”12.3.3 Press the “START” key.12.3.4 When the OPEN LID appears on the screen, open the lid and GENTLY place anew, clean sample pan on the pan support.12.3.5 Close the lid and allow the unit to tare.12.3.6 When the OPEN LID appears on the screen again, open the lid and gently andevenly shake sodium tartrate over the surface of the sample pan until the displayshows that 7.9 to 8.1 grams of sample are loaded.12.3.7 Close the lid and the test will begin.12.3.8 Wait for the end of test signal.12.3.9 If this is the first test of the day, discard the results of this test for stability reasons.12.3.10 Results should be within a range of ±0.100% of the assayed value on the bottlelabel.12.4 PRECISION TARTRATE TEST12.4.1 Run five sodium tartrate12.4.2 The mean of the sodium tartrate results should be ±0.10% of the value on thebottle label.12.4.3 If the result is still out of tolerance, The most common causes of such errors arebent or dirty sample pans, or debris falling into the balance shaft, interfering withthe pan support’s ability to freely move up and down. Also, clean the heaterassembly and check the temperature sensor.12.4.4 Repeat the tartrate test again, using a clean sample pan for each of the fivesamples, and analyze the results.57
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USER MANUALCOMPUTRAC ® MAX ® 1000
Page 5 and 6:
PACKING and SHIPPING INSTRUCTIONSTh
Page 7 and 8:
Figure 1 MAX-1000 PACKING DIAGRAMvi
Page 9 and 10:
TABLE of CONTENTSPACKING and SHIPPI
Page 11 and 12:
12 PERFORMANCE VERIFICATION .......
Page 13 and 14:
1 INTRODUCTIONThe Arizona Instrumen
Page 15 and 16:
Location SelectionSelect a location
Page 17 and 18: 2.3.2 Obtain a sample of test mater
Page 19 and 20: 3.4 CONTROLS3.4.1 The front panel c
Page 21 and 22: 3.6.4 After “START” has been pr
Page 23 and 24: 4.1 INSTALLATION OF BALANCE PAN SUP
Page 25 and 26: 4.2 AC POWER CONNECTIONFigure 7 MAX
Page 27 and 28: 4.5 NITROGEN PURGE SETUP4.5.1 Some
Page 29 and 30: 4.7.4 Connect tubing from the conne
Page 31 and 32: 4.10 ENABLE PRINTER OUTPUT4.10.1 Wi
Page 33 and 34: 5 MENU SYSTEM: INSTRUMENT CONFIGURA
Page 35 and 36: 6 “MEMRY” KEY: MEMORY START SEL
Page 37 and 38: 7.1.1 To select a menu item, move t
Page 39 and 40: Test TemperatureThe current setpoin
Page 41 and 42: Start Temp ControlThe START TEMP CO
Page 43 and 44: Some samples contain more than one
Page 45 and 46: The PAN TARE OPTIONS offers the use
Page 47 and 48: ! RESULT DISPLAY OPTIONSTest result
Page 49 and 50: 7.4 CALIBRATION MENU7.4.1 CALIBRATE
Page 51 and 52: connected (IBM or Epson). Select th
Page 53 and 54: tags entered by the operator to ide
Page 55 and 56: ! SYRINGE TESTThis function is usef
Page 57 and 58: 8 “PARAM” KEY: TEMPORARILY CHAN
Page 59 and 60: 9 MISCELLANEOUS MENU MESSAGES9.1 CO
Page 61 and 62: 10.1.4 The final portion of the cur
Page 63 and 64: Figure 54 MOISTURE VS. TEMPERATURE
Page 65 and 66: 11.2.2 The sample should be added e
Page 67: 12 PERFORMANCE VERIFICATIONPeriodic
Page 71 and 72: 13 ROUTINE MAINTENANCEThe MAX-1000
Page 73 and 74: 13.3 SAMPLE PAN SUPPORTThe sample p
Page 75 and 76: SYMPTOM DIAGNOSIS REMEDYNo power to
Page 77 and 78: TEMPERATURE CIRCUITProbable cause:A
Page 79 and 80: FeatureSpecificationTest DisplayInt
Page 81 and 82: 18 APPENDIX A18.1 PARAMETER DEVELOP
Page 83 and 84: PARAMETER DOCUMENTATION:To ensure o
Page 85 and 86: If smaller standard deviations are
Page 87 and 88: 21 MAINTENANCE CONTRACTArizona Inst
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Computrac MAX-1000 User's Manual - Arizona Instrument

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