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  1.   Trademarks
  2. 1Introduction
  3. 2Flow Meter Design
    1. 2.1 Mechanical Considerations
    2. 2.2 Magnetic Considerations
      1. 2.2.1 Material
      2. 2.2.2 Geometry
      3. 2.2.3 Magnetic Deign Tools
    3. 2.3 Hall-Effect Sensor Considerations
      1. 2.3.1 Device Sensitivity
      2. 2.3.2 Unipolar Switch
      3. 2.3.3 Omnipolar Switch
      4. 2.3.4 1D Latch
      5. 2.3.5 2D Integrated Latch
      6. 2.3.6 Bandwidth
      7. 2.3.7 Package
      8. 2.3.8 Power Consumption
  4. 3Flow Meter Development
    1. 3.1 3D-Print Recommendations
    2. 3.2 Flow Meter Assembly Considerations
    3. 3.3 Flow Meter Assembly Guide
      1. 3.3.1 Shaft Installation
      2. 3.3.2 Bearing Installation
      3. 3.3.3 Magnet Installation
      4. 3.3.4 Impeller Installation
      5. 3.3.5 O-ring Installation
      6. 3.3.6 Flow Meter Top Installation
      7. 3.3.7 PCB Mounting
      8. 3.3.8 Cover Installation
  5. 4Flow Meter Evaluation
    1. 4.1 Flow Meter Testing
  6. 5Error Sources
    1. 5.1 Mechanical Error
    2. 5.2 Sampling Error
    3. 5.3 Magnetic Error
  7. 6Flow Meter PCB
    1. 6.1 PCB Schematic
    2. 6.2 PCB Layout
  8. 7Bill of Materials (BOM)
  9. 8References

3.2 Flow Meter Assembly Considerations

Prepare all 3D printed parts by removing any existing support material. Due to printers having varying degrees of precision, some parts may require alteration to ensure proper fit.

Table 3-1 shows the 3D printed files required for flow meter design. All files are available from Mechanical Flow Meter Design Files.

Table 3-1 Flow Meter Assembly
Parameter Vertical Sensor Alternate Vertical Sensor Horizontal Sensor
Magnet Compatibility Phoenix America ring magnet
(G8-H-315-50-8)		 ¼ in × 1/16 in - disc magnets ¼ in × 1/16 in - disc magnets
Flow Meter Body 3D Print File Flow Body.STL Flow Body.STL Flow Body.STL
Flow Meter Impeller 3D Print File Ring Mag Impeller.STL Alternate Mag Impeller.STL Horizontal Mag Impeller.STL
Flow Meter Top 3D Print File Vertical Top.STL Vertical Top.STL Horizontal Top.STL
Flow Meter Cover 3D Print File Vertical Cover.STL Vertical Cover.STL Horizontal Cover.STL