Solartron Mobrey 7828 - Introduction to the 7828 Density Transmitter; About the 7828 Density Transmitter

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7828 Density Transmitter Technical Manual Contents

78285000_AB v

Contents

SECTION 1 - INTRODUCTION

1.1 ABOUT THE 7828 DENSITY TRANSMITTER.................................... 1-1

1.1.1 What is it?..........................................................................................1-1

1.1.2 7828 measurements..........................................................................1-2

1.1.3 What is it used for?............................................................................1-2

1.1.4 Typical 7828 application....................................................................1-3

1.2 7828 OPTIONS................................................................................... 1-4

SECTION 2 - MECHANICAL INSTALLATION

2.1 INTRODUCTION ................................................................................ 2-1

2.2 BOUNDARY AND VISCOSITY EFFECTS.......................................... 2-3

2.2.1 Boundary effects................................................................................2-3

2.2.2 Viscosity effects.................................................................................2-6

2.3 STANDARD INSTALLATIONS........................................................... 2-7

2.3.1 7828 orientation.................................................................................2-8

2.3.2 Free stream installation - flanged fitting.............................................2-9

2.3.3 Free stream installation - weldolet...................................................2-10

2.3.4 T-piece installation...........................................................................2-11

2.3.5 T-piece weldolet installation.............................................................2-12

2.3.6 Flow-through chamber installation...................................................2-13

2.4 INSTALLATION IN THE PIPELINE OR SYSTEM ............................ 2-14

2.4.1 Fluid at the sensor...........................................................................2-14

2.4.2 Thermal effects................................................................................2-14

2.4.3 Flow rate..........................................................................................2-15

2.4.4 Entrained gas...................................................................................2-15

2.4.5 Solids contamination........................................................................2-15

2.4.6 Example installation.........................................................................2-15

2.5 COMMISSIONING............................................................................ 2-16