
FlowVis Digital®
FlowVis Digital flow meters
This Means More…
FlowVis flow meters have been revolutionizing the way flow is measured in pool and spa applications since their inception in 2012. FlowVis Digital upgrades offer increased functionality and convenience to an already highly capable NSF 50 certified flow meter.
Digital options include the FlowVis Digital and FlowVis Digital Signal Converter, each of which is available for the vast majority of analog FlowVis models. A complete list of compatible FlowVis models can be found on this page.

KEY FEATURES
≥98.1% accuracy across the entire model range
Compatible with FlowVis models for 1.5” - 8” and metric DN80 - DN200 pipe diameters
4-20mA output for use with automation systems and VFDs
More NSF 50 certified models than any other brand of digital flow meter
Digital readout in GPM or optional LPM or m3/h*
Installs quickly and easily with no calibration required
Manufactured in the USA
3-year warranty
*Model FV-D only
FlowVis Digital Sensor (FV-D-SO)
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The FlowVis Digital Sensor (FV-D-SO) is a standard feature of any FlowVis Digital configuration. The sensor mounts directly on the side of any FlowVis model and provides a non-linear 4-20mA signal to e.g., FlowVis Digital, FlowVis Digital Signal Converter, or an automation system.
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Housing Material: Polycarbonate
Cable Length: 26.25 ft. (8M)
4-20mA Scaled to: 4mA = zero flow, 20mA = max flow rate limited of installed FlowVis
4-20mA Output Format: Voltage sourced from connected equipment, e.g., FlowVis Digital, FV-D Signal Converter, automation system, etc.
4-20mA Maximum Load: 250 Ohms
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FV-15; FV-15-L; FV-C-M-DN40; FV-15-U
FV-C; FV-C-S; FV-C-S-L
FV-2; FV-2-L; FV-C-M-DN50; FV-2-U
FV-C-M-DN65-HF-S
FV-3; FV-3-L; FV-C-M-DN80
FV-4; FV-4-L; FV-C-M-DN100
FV-6; FV-6-L; FV-C-M-DN150
FV-8; FV-8-L; FV-C-M-DN200
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OEM
eTail / Online Retail
FlowVis Digital Options
FlowVis Digital is available in two distinctly different variations. Choose which one best suits your needs.
FlowVis Digital (FV-D)
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FlowVis Digital (FV-D) offers advanced features and functionality for customers who require a remote digital readout of their flow rate. FV-D also provides a readout of the turnover rate, is capable of interfacing with external equipment, and allows the user to set visual flow rate alarms. Model FV-D is NSF 50 certified.
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Enclosure Material: ABS
Enclosure Rating: NEMA 4X / IP66
Dimensions (HxWxD): 6” x 6” x 3.5” (152mm x 152mm x 90mm)
Outdoor (UV inhibitor included): Special Order
Display: LCD
Backlight Colors: Red, Green, White
Display Cable with Socket: 138” (3.5M) long
Power Connection: Receptacle Style
Power Source: 100-240VAC, 0.4 Amps
Power Output: 12 VDC, 1.0 Amps
Low Voltage Cable Length: 120” (3M)
Auxiliary Relay Output Contacts: Double Pole, Double throw Form C Dry Contacts
Auxiliary Relay Contact Ratings: 20A max
Auxiliary Relay Coil: 12VDC (sourced and controlled by Display)
Accuracy: >97.9% for all FlowVis models
Operating Temperature: 32 to 122ºF (0 to 50ºC)
Storage Temperature: -4 to 140ºF (-20 to 60ºC)
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FV-15; FV-15-L; FV-C-M-DN40; FV-15-U
FV-C; FV-C-S; FV-C-S-L
FV-2; FV-2-L; FV-C-M-DN50; FV-2-U
FV-C-M-DN65-HF-S
FV-3; FV-3-L; FV-C-M-DN80
FV-4; FV-4-L; FV-C-M-DN100
FV-6; FV-6-L; FV-C-M-DN150
FV-8; FV-8-L; FV-C-M-DN200
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End-User (commercial)
End-User (residential)
Distribution
Pool dealers, installers, and builders
OEM
eTail / Online Retail
FlowVis Digital Signal Converter (FV-D-SC)
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FlowVis Digital Signal Converter (FV-D-SC) takes the non-linear 4-20mA signal provided by the FlowVis Digital Sensor (FV-D-SO), and linearizes it. FV-D-SC is the perfect solution for transmitting accurate flow readings to automation systems and other external equipment.
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Enclosure Material: Polycarbonate
Enclosure Rating: NEMA 4X / IP66
Dimensions (HxWxD): 4.5” x 3.5” x 2.1” (115mm x 90mm x 50mm)
Power Connection: Receptacle Style
Power Source: 100-240VAC, 0.4 Amps
Power Output: 12 VDC, 1.0 Amps
Low Voltage Cable Length: 120” (3M)
Accuracy: >97.9% for all FlowVis models
Operating Temperature: 32 to 122ºF (0 to 50ºC)
Storage Temperature: -4 to 140ºF (-20 to 60ºC)
Rated For: Indoor or outdoor use
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FV-2; FV-2-L; FV-C-M-DN50
FV-3; FV-3-L; FV-C-M-DN80; FV-3-40
FV-4; FV-4-L; FV-C-M-DN100
FV-6; FV-6-L; FV-C-M-DN150
FV-8; FV-8-L; FV-C-M-DN200
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OEM
To interface with automation systems and other external equipment
Distribution
Where to Buy
FlowVis Digital flow meters are available through many swimming pool retailers and distributors and directly from H2flow Controls.
For ordering information, please contact us.
FlowVis, FlowVis Digital Product Brochure (Imperial): English
FlowVis, FlowVis Digital Product Brochure (Metric): English | Spanish
FlowVis Digital Instruction Manual (Imperial): English
FlowVis Digital Instruction Manual (Metric): English
FlowVis Digital Signal Converter Manual: English
FlowVis Digital Signal Converter Wiring Diagram: English
FlowVis Certificate of Warranty: English
Specifications | |
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**Pipe Diameter** | 1.5", 2", 2.5", 3", 4", 6", 8", DN40, DN50/65, DN80, DN100, DN150, DN200 |
**Average Accuracy** | ≥97.9% across the entire model range |
**Warranty** | 3-years |
**Approvals** | NSF 50 certified (model FV-D) |

Upgrade to FlowVis Digital
Unlock the full potential of the FlowVis flow meter by ugrading to the FlowVis Digital or FlowVis Digital Signal Converter.
FlowVis Digital provides the user with remote indication via an LCD display, visual alarms at user-defined set points, provides pool turnover rate information, allows the user to operate external equipment at user-defined flow rates, and more.
If you’re already using FlowVis Digital, access the many unique features by installing the FlowVis Digital APM Configurator software. To do so, click the button below. Step-by-step instructions on how to use the APM Configurator software can be found in the FlowVis Digital instruction manual.
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Installs quickly and easily to existing FlowVis models
Pool Turnover rate functionality (FV-D only)
Linear 4-20mA output (FV-D-SC only)
Ability to interface with a multitude of external equipment
>98% accuracy
Ability to set flow rate alarms (FV-D only)
Offers remote indication of flow (FV-D only)
Manufactured in the USA
3-year warranty
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FV-3-LA: Exchange lid assembly for Digital upgrade for FlowVis model FV-3. Scale in GPM. Required for all existing ‘pre-Oct.2020’ FV-3 installations.
FV-4-LA: Exchange lid assembly for Digital upgrade for FlowVis model FV-4. Scale in GPM. Required for all existing ‘pre-Oct.2020’ FV-4 installations.
FV-6-LA: Exchange lid assembly for Digital upgrade for FlowVis model FV-6. Scale in GPM. Required for all existing ‘pre-Oct.2020’ FV-6 installations.
FV-8-LA: Exchange lid assembly for Digital upgrade for FlowVis model FV-6. Scale in GPM. Required for all existing ‘pre-Oct.2020’ FV-6 installations.
FV-3-LA-L: Exchange lid assembly for Digital upgrade for FlowVis model FV-3-L. Scale in LPM. Required for all existing ‘pre-Oct.2020’ FV-3-L installations.
FV-4-LA-L: Exchange lid assembly for Digital upgrade for FlowVis model FV-4-L. Scale in LPM. Required for all existing ‘pre-Oct.2020’ FV-4-L installations.
FV-6-LA-L: Exchange lid assembly for Digital upgrade for FlowVis model FV-6-L. Scale in LPM. Required for all existing ‘pre-Oct.2020’ FV-6-L installations.
FV-8-LA-L: Exchange lid assembly for Digital upgrade for FlowVis model FV-6-L. Scale in LPM. Required for all existing ‘pre-Oct.2020’ FV-6-L installations.
FV-DN80-LA: Exchange lid assembly for Digital upgrade for FlowVis model FV-DN80. Scale in m3/h. Required for all existing ‘pre-Oct.2020’ FV-DN80 installations.
FV-DN100-LA: Exchange lid assembly for Digital upgrade for FlowVis model FV-DN100. Scale in m3/h. Required for all existing ‘pre-Oct.2020’ FV-DN100 installations.
FV-DN150-LA: Exchange lid assembly for Digital upgrade for FlowVis model FV-DN150. Scale in m3/h. Required for all existing ‘pre-Oct.2020’ FV-DN150 installations.
FV-DN200-LA: Exchange lid assembly for Digital upgrade for FlowVis model FV-DN200. Scale in m3/h. Required for all existing ‘pre-Oct.2020’ FV-DN200 installations.
FVD-EC: Display extension cable; 26.25ft. (8 meters)
FVD-RK: Relay interface kit
FlowVis Digital in Your Industry

Pool and Spa
FlowVis Digital flow meters offer the same unparalleled accuracy and reliability as standard FlowVis models, with additional features and benefits.