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
