Density Meter LB 444 Table of Contents
ii
Calibration and Connection of Pt 100 Resistance Thermometer............................ 43
Basic Settings ............................................................................................... 43
Calibration..................................................................................................... 46
5.1.1.3 One-point Calibration............................................................. 46
5.1.1.4 Two- and Multi-Point Calibration ...........................................47
5.2 Measurement................................................................................................ 49
5.3 Error Messages............................................................................................. 50
Resetting Error Messages ............................................................................ 50
Error Messages during Operation................................................................. 50
Error Messages during Calibration ............................................................... 50
Error Messages during Measurement .......................................................... 51
5.4 Starting/Stopping Operation of the System .................................................. 52
6. BASICS OF DENSITY MEASUREMENTS ............................................................ 53
6.1 Temperature Compensation......................................................................... 53
Temperature Measurement .......................................................................... 53
Monitoring the Temperature Signal .............................................................. 53
Function of Temperature Compensation...................................................... 54
Calculation of the Temperature Coefficients ................................................54
Calculation of the Square Temperature Coefficient...................................... 56
Reference Temperature................................................................................ 57
Temperature Coefficient Calculation without Table Values.......................... 57
6.1.1.1 Linear temperature coefficient............................................... 57
6.1.1.2 Square Temperature Coefficient ........................................... 58
6.2 Calibration Method........................................................................................ 59
Calibration Modes......................................................................................... 59
One-Point Calibration ................................................................................... 61
Two and Multi-Point Calibration.................................................................... 64
Correction of Analysis Values....................................................................... 65
Checking the Calibration............................................................................... 67
6.2.1.1 One-Point Calibration ............................................................ 67
6.2.1.2 Two-Point Calibration ............................................................ 67
6.2.1.3 Multi-Point Calibration............................................................ 68
6.3 Interference Radiation Detection .................................................................. 69
6.4 Automatic Measuring Time Switchover ........................................................ 70
6.5 Measurements of Suspensions and Solutions ............................................. 71
Measurement................................................................................................ 71
Calculating the Density of Individual Components ....................................... 73
6.6 Correcting the Results: Addition and Multiplication ...................................... 75
Additive Constant.......................................................................................... 75
6.6.2 Multiplication Factor............................................................................. 75
7. TECHNICAL DATA ................................................................................................ 77
7.1 Evaluation Unit LB 444 ................................................................................. 77
7.2 Detector ........................................................................................................ 79
8. SERVICE INSTRUCTIONS .................................................................................... 81
9. RADIATION PROTECTION ................................................................................... 82
9.1 Basics and Guidelines .................................................................................. 82
Shielding Installation..................................................................................... 85
Point Source Replacement........................................................................... 85
9.2 Radiation Dose Calculations......................................................................... 87
9.2.1 Exposure when Installing the Shielding............................................... 88
9.2.2 Exposure when Replacing Point Sources ...........................................88
9.3 Emergency Instructions ................................................................................ 90
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