Flow Computers - Fluidwell

General Information

Introduction

The product group "Flow Computers" offers a unique range of comprehensive solutions to calculate the consumption and net flow at standard conditions or the ratio between two flows. Typical applications are found on board of ships to calculate the fuel consumption, gas flow calculation in power plants and the monitoring of two component blending.

The functionality of these products is based on the F1-Series hardware platform as multiple inputs are required for flow, temperature and pressure measurement.

All models are available for both safe area and hazardous area applications. Moreover, wireless data re-transmission and remote process monitoring is offered with our M-Series and ProcessMonitor.com products and services.

For an explanation of the various options such as analog and pulse output signals, communication, power supply and enclosures, please read the section detailing the F-Series products.

Functions

The following features are available in the flow computer models range. A more detailed description of each flow computer and it’s typical features can be found in the products datasheet.

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ratio (A/B) - model F114

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sum (A+B) - model F116

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differential / consumption (A-B) - model F116

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differential / consumption (A-B) with temperature compensation - model F127

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liquid volume calculation with temperature compensation - model F126-EL

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gas volume calculation with temperature and pressure compensation - model F126-EG

Configuration menu

All configuration settings are accessed via a simple operator menu which can be passcode protected to prevent unauthorized access. Each setting is clearly indicated with an alphanumerical description, therefore avoiding confusing abbreviations and baffling codes. There are no sensitive DIP-switches or trimmers, you simply select "Flowmeter" as main function, after which you can select "NPN pulse" or "span" etc. Once familiar with one F-Series product, you will be able to program all models in the series without a manual. All settings are safely stored in EEPROM memory. The clear and easy structured configuration menu is one of the most appreciated features of the F-Series.

Signal input type

For the flow computers, four basic signal input types are available:

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Pulse signals for flow measurement: sine wave (coil) low sensitivity (80mVp-p), sine wave high sensitivity (20mVp-p), Namur, NPN, PNP, reed-switch or active pulses. For most signals a low pass filter can be enabled to ignore pulse bounce. The sine wave input can even be supplied with 10mV or 5mVp-p sensitivity (option ZF and ZG).

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Analog signal (0)4 – 20mA for flow, temperature and pressure measurement. The input signal can be tuned within this range (e.g. from 4.0mA to 10.0mA). To avoid incorrect signal processing at minimum signal, a low cut-off filter is available.

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Analog signal: 0 – 10V DC for flow, temperature and pressure measurement. The input signal can be tuned within this range (e.g. from 2.0 to 5.0V DC). A low cut-off filter is available here too, to avoid signal processing at minimum signal.

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PT100 signal for temperature measurement.

Data protection

All settings and totals are stored in EEPROM memory ensuring that no information is lost in the event of power failure or battery exchange.

To reset total, the CLEAR key must be pressed twice to avoid undesired initialization. Accumulated total cannot be reset to zero. The configuration menu and alarm values can be passcode protected to prevent unauthorized access.

Flow computers

F126-EL

Flow computer with temperature compensation for corrected liquid volume

F126-EG

Flow computer with temperature and pressure compensation for corrected gas volume

F127

Differential flow computer with temperature compensation for corrected liquid volume

Ratio

F114

Ratio monitor / totalizer with high / low alarms and analog outputs

Differential / Sum

F116

Differential / sum flow computer with analog and pulse outputs