The Consumer Guide to Differential Pressure Flow Transmitters |
Table of Contents |
| 0.0 Disclaimer |
(Page 5) |
| 1.0 Executive Summary |
(Page 6) |
2.0 Differential Pressure Flow Measurement
2.1 Principle of Operation of Differential Pressure Primary Flow Elements
2.2 Square Root Relationship Between Pressure Drop and Flow
2.3 Minimum Reynolds Number Constraints
2.4 Principle of Operation of Differential Pressure Flow Transmitters
2.5 Low Flow Characterization
2.6 Measured Quantity
2.7 Typical Applications
2.8 Additional Information |
(Page 7) |
3.0 Differential Pressure Flow Transmitter Technology
3.1 Capacitance
3.2 Differential Transformer
3.3 Force Balance
3.4 Piezoelectric
3.5 Potentiometer
3.6 Strain Gage |
(Page 16) |
4.0 Transmitter Design
4.1 Analog Transmitters
4.2 Digital Transmitters
4.3 Fieldbus Transmitters
4.4 Multi-Valve Manifolds
4.5 Traditional and Coplanar Construction
4.6 Safety Transmitters
4.7 High Static Pressure Transmitters |
(Page 18) |
5.0 Supplier Data
5.1 Process Limits
5.2 Ambient Limits
5.3 Output Signals
5.4 Reference Performance
5.5 Temperature Effects
5.6 Pressure Effects
5.7 Power Supply Effects
5.8 Mounting Position Effects
5.9 Stability (Drift) |
(Page 25) |
6.0 Supplier Data Analysis
6.1 Process Limits
6.2 Ambient Conditions
6.3 Reference Performance
6.4 Operating Effects |
(Page 30) |
| 7.0 Summary of Analysis |
(Page 34) |
8.0 Differential Pressure Flow Transmitter Performance
8.1 Accuracy Statements
8.2 Calculating Rate Statements
8.3 Measurement Range
8.4 Data Analysis |
(Page 35) |
9.0 Reference Performance
9.1 Primary Flow Elements
9.2 Effect of Transmitter Accuracy on Flow Measurement |
(Page 41) |
|
10.0 Actual Performance
10.1 Temperature Effects
10.2 Pressure Effects
10.3 Mounting Orientation Effects
10.4 Stability (Drift) |
(Page 44) |
11.0 Supplier Performance Claims
11.1 High Rangedown
11.2 High Turndown
11.3 High Accuracy
11.4 Reduced Calibration Requirements |
(Page 48) |
12.0 Installation Considerations
12.1 Fluid Characteristics
12.2 Piping and Hydraulic Considerations
12.3 Impulse Tubing
12.4 Differential Pressure Flow Transmitter Installation
12.5 Differential Pressure Flow Transmitter Calibration
12.6 Ambient Conditions |
(Page 52) |
13.0 Accessories
13.1 Wetted Parts
13.2 Non-Wetted Parts
13.3 Differential Pressure Flow Transmitter Signals |
(Page 57) |
| 14.0 Explanation of Attachments |
(Page 60) |
15.0 Differential Pressure Flow Transmitter Supplier Profiles
15.1 The Major Suppliers of Differential Pressure Flow Transmitters
15.2 Other Suppliers of Differential Pressure Flow Transmitters |
(Page 61) |
General Information
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