What is Flow Totalizer? How it Works?

 

An accessory for totalization of flow.

Design Features

totalize flow for virtually any flow meter with a 5 to 10 Vdc output (optional 0 to 5 Vdc) with no external power required.

This compact totalizer is designed to be used primarily with mass flow meters and mass flow controllers. It can also be used in conjunction with other types of instrumentation with 0 to 5 Vdc signal outputs.

The totalizer takes analog output flow signals of either 5 to 10 Vdc, from GFM mass flow meters and GFC mass flow controllers, or 0 to 5 Vdc from AFC mass flow controllers, AFM mass flow meters and other compatible products (jumper selectable).

The totalizer integrates and accumulates up to 7 digits of direct engineering units for the given gas and flow rate (i.e. standard liters, standard cubic centimeters, etc.).

In order to reduce low signal (noise) totalizing, provision is made for 1% cut off.

A built-in battery back-up holds the total reading for up to 20 years.

The totalizer can be connected to GFM mass flow meters or GFC mass flow controllers via either a modular jack replacing the LCD display or with an additional connector in parallel with the LCD display.

Each totalizer is shipped from the factory with adjustments made for specified flow rates. The totalizer can be re-scaled for a different flow range or engineering unit.

 

It totalizes flow. Say you have a 20 gpm flow. In a minute the flow totalizer would show 20 gallons of total flow, in an hour 1200 gallons.

 

The water meter in every house or every commercial building that reads out how many gallons or liters of water have been passed through the meter is a totalizer.

A totalizer measures the total flow through a meter.

How a totalizer works depends on the technology of specific totalizer. Many totalizers are an additional function on a flow rate meter, where a pulse output or a relay cycles every X number of gallons/liters. Since a rate meter 'knows' the instantaneous rate, it isn't too hard to sum or integrate rates over time to calculate a total.

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