Digital Flow Computers, Totalizers, and Indicators
Description
Digital flow computers, totalizers, and indicators are devices used to measure, calculate, and display flow rates and total flow volumes of fluids. They process input signals from various sensors to provide accurate flow measurements and calculations. These devices are essential for monitoring and controlling fluid flow in various industrial applications.
Working Principle
Digital flow computers, totalizers, and indicators operate by receiving input signals from flow sensors, such as differential pressure meters, true mass flow meters, and velocity meters. These inputs can include pulse (frequency), analog current, and analog voltage signals. The devices process these signals to calculate flow rates and total flow volumes. They also account for additional process variables like temperature and density to ensure accurate measurements. The processed data is then outputted through control outputs such as analog voltage, analog current, frequency (pulse), and switch outputs. These devices are useful because they provide precise flow measurements, which are crucial for efficient process control and resource management in industrial settings.
Applications
Digital flow computers, totalizers, and indicators are used in a variety of specific applications. In the oil industry, they are employed for flow monitoring and indication in oil rigs, pipelines, and oil wells, especially in remote and harsh environments. In water and wastewater plants, they help monitor and control fluid flow. They are also used in offshore maritime vessels for fuel consumption calculation and total flow calculation. Additionally, in chemical plants, they are used for ratio controlling, and in the food industry, they serve as batch controllers.
Advantages over other Flow Computers, Totalizers, and Indicators
One advantage of certain digital flow computers, totalizers, and indicators is their ability to function as standalone devices without the need for external power, making them suitable for harsh and remote environments. For example, the Fluidwell explosion-proof E-series flow monitors can withstand extreme conditions, which is a significant advantage over other devices that may require more infrastructure or are less durable in such environments.
Limitations
Some limitations of digital flow computers, totalizers, and indicators include their sluggish response to quick changes in flow, especially at high differential pressures. This can lead to inaccuracies in rapidly changing flow conditions. Additionally, they may be affected by solid impurities in the fluid, which can cause errors in measurement.
Considerations
When considering digital flow computers, totalizers, and indicators, it is important to evaluate initial costs, operating expenses, and maintenance requirements. These devices can vary in durability and accuracy, which can impact long-term costs and reliability. Replacement and maintenance costs should also be considered, as devices operating in harsh environments may require more frequent servicing or replacement. Ensuring that the chosen device meets the specific needs of the application, including the type of inputs and outputs required, is crucial for optimal performance and cost-effectiveness.
from McCrometer, Inc.
Flow monitoring at scale can be difficult. Whether you're managing complex water quality projects or need a reliable solution for multi-sensor data collection, the FL1500 flow logger offers the agility, accuracy, and ease of use that professionals in the field demand. The FL1500, a Hach Flow... [See More]
- Display Types: Digital Display (Readouts)
- Inputs: 4
- Media Type: Liquid
- Operating Temperature: -4 to 140
from ABB Measurement & Analytics
Flow-X series of flow computers is a powerful and versatile automation platform, especially designed for the custody transfer of liquid and gas. It provides different enclosure options for panel-mount and field-mount installation and possesses measurement certifications from multiple, 3rd-party... [See More]
- Display Types: Digital Display (Readouts)
- Rates Displayed: Volumetric; Mass
- Media Type: Gas/Steam
- Local Interface: Digital Front Panel
from ABB Measurement & Analytics
Flow-X series of flow computers is a powerful and versatile automation platform, especially designed for the custody transfer of liquid and gas. It provides different enclosure options for panel-mount and field-mount installation and possesses measurement certifications from multiple, 3rd-party... [See More]
- Display Types: Digital Display (Readouts)
- Rates Displayed: Volumetric; Mass
- Media Type: Gas/Steam
- Local Interface: Digital Front Panel
from ABB Measurement & Analytics
Flow-X series of flow computers is a powerful and versatile automation platform, especially designed for the custody transfer of liquid and gas. It provides different enclosure options for panel-mount and field-mount installation and possesses measurement certifications from multiple, 3rd-party... [See More]
- Display Types: Digital Display (Readouts)
- Rates Displayed: Volumetric; Mass
- Media Type: Gas/Steam
- Local Interface: Digital Front Panel
from ABB Measurement & Analytics
Time tested and field proven, μFLO is known throughout the industry as an extremely accurate and reliable gas flow computer. µFLOG5 features the Linux operating system, has persistent memory, and supports linear liquid measurement. Backwards compatibility is a high priority, and the... [See More]
- Display Types: Digital Display (Readouts)
- Local Interface: Digital Front Panel
- Media Type: Gas/Steam
- Inputs: 2
from ABB Measurement & Analytics
XFCG5 provides an upgraded path to new digital technologies and protocols such as MQTT and secured wireless connection (WiFi-Access Point or Bluetooth). This generation of flow computers and RTUs also offers a low-power, highly-reliable microprocessor-based unit with a Linux operating system,... [See More]
- Display Types: Digital Display (Readouts)
- Local Interface: Digital Front Panel
- Media Type: Gas/Steam
- Inputs: 2
from KOBOLD Instruments, Inc.
Product Features. Analog Input 0-5 V, 0-10 V, 1-5 V 4-20 mA or 0-20 mA. Display Rate, Total, Peak or Valley. Completely User Programmable. Analog or Serial Communications. NEMA 4X Front Panel. The KOBOLD INT series of controllers is designed to allow totalization and rate metering with sensors... [See More]
- Display Types: Digital Display (Readouts)
- Rates Displayed: Totalizer
- Media Type: Liquid
- Local Interface: Digital Front Panel
from Aalborg Instruments
Microprocessor driven digital Command Modules are. used in conjunction with any analog or digital mass flow. meters or controllers with 0-5 Vdc input /output signals. One, two, three and four channel Command Module. configurations are available. Command Modules contain. appropriate power supplies,... [See More]
- Display Types: Digital Display (Readouts)
- Rates Displayed: Volumetric; Mass; Totalizer
- Media Type: Gas/Steam
- Local Interface: Digital Front Panel; Computer Interface
from Liquid Controls Group; a Unit of IDEX Corporation
The LectroCount „ ¢LCR System is an electronic register that replaces the mechanical register, calibration gears and/or adjuster mechanism. This system utilizes Weights & Measures approved hardware and software. The LCR is available with or without internal pulser, and accepts direct... [See More]
- Display Types: Digital Display (Readouts)
- Rates Displayed: Totalizer
- Media Type: Liquid
- Local Interface: Digital Front Panel; Computer Interface (optional feature)
from AW Company
Fully automatic, audible alarm, NEMA 12 and 13 rating [See More]
- Display Types: Digital Display (Readouts)
- Rates Displayed: Volumetric
- Media Type: Liquid
- Local Interface: Digital Front Panel
from Siemens Process Instrumentation
The battery or mains powered SITRANS FUE950 is a universal custody transfer approved energy calculator. It is designed for use in hot water, chilled water and cooling/heating applications. The calculator has a modular construction which means that it can be fitted with optional output modules when... [See More]
- Display Types: Digital Display (Readouts)
- Local Interface: Digital Front Panel
- Rates Displayed: Totalizer
- Inputs: 5
from Willowglen Systems Inc.
Willowglen ’s Unisen Series 5 Flow Computer outperforms the competition – with standard and advanced features, and flexible configuration: · Available in different sizes to accommodate small to large numbers of flow meters (maximum 25 flow meters). · Flexible enough to deal... [See More]
- Display Types: Digital Display (Readouts)
- Rates Displayed: Volumetric
- Media Type: Liquid; Gas/Steam
- Local Interface: Digital Front Panel; Computer Interface
from OMEGA Engineering, Inc.
The FMA1000 Series industrial air velocity/ temperature transmitter/indicator measures and displays air velocity as well as air temperature in research and development labs, HVAC applications, and other manufacturing processes. The sensor design is based on three RTD elements, one measures air... [See More]
- Display Types: Digital Display (Readouts)
- Rates Displayed: Velocity
- Media Type: Gas/Steam
- Local Interface: Digital Front Panel; Computer Interface
from KROHNE Messtechnik
The SUMMIT 8800 is a digital flow computer for custody transfer (CT) measurement. Its state of the art full color graphical touch screen allows a graphical representation of the measurement process, with all measured values shown in real time; Up to 5 different types of meters combined in one flow... [See More]
- Display Types: Digital Display (Readouts); Computer
- Rates Displayed: Volumetric; Velocity; Mass; Totalizer
- Media Type: Liquid; Gas/Steam
- Local Interface: Digital Front Panel; Computer Interface
from Fluidwell bv
The F116 flow computer has been developed to calculate differential / consumption or total volume. The usual difficulties encountered in such applications include: pulsating flows, very low consumption readings, vibration and high ambient temperatures. These are all well catered for in the design... [See More]
- Display Types: Digital Display (Readouts)
- Rates Displayed: Volumetric; Mass; Totalizer
- Media Type: Liquid; Gas/Steam
- Local Interface: Digital Front Panel
from Flow Technology, Inc.
Battery or DC power and a compact size make the BR3000 Series Rate/Totalizer a versatile local indicator. It accepts magnetic pickup and DC pulse inputs. Rate and total are shown simultaneously on the easy-to-read, two-line, LCD display. Twenty point linearization is a standard feature, allowing... [See More]
- Display Types: Digital Display (Readouts)
- Local Interface: Digital Front Panel
- Rates Displayed: Totalizer
- Generic Inputs: Pulse (Frequency) Inputs; Analog Voltage Inputs
from Florite International, Inc.
The 900 Series is an economic one loop microcomputer-based instrument incorporating user selectable digital and analog inputs, as well as analog and relay outputs. Other 900 Series features include .005% high accuracy PID, batch, and dose control functions. Additionally, the 900 Series encompasses... [See More]
- Display Types: Analog Meter or Indicator; Digital Display (Readouts); Computer
- Rates Displayed: Volumetric; Velocity; Mass; Totalizer
- Media Type: Liquid; Gas/Steam
- Local Interface: Analog Front Panel; Digital Front Panel; Computer Interface
from Define Instruments
This simple and affordable counter/rate indicator is compatible with a range of sensors, and is ideal for indicating totalization and monitoring rates. At a glance: NPN, PNP, TTL, namur, tacho or closed contact sensors. Signal averaging on the rate. Simple, intuitive interface with scrolling text... [See More]
- Display Types: Digital Display (Readouts)
- Computer Interface: Serial
- Local Interface: Digital Front Panel; Computer Interface
- Control Outputs: 1
from Hoffer Flow Controls, Inc.
General Description. ACE II incorporates the newest technological advances in electronics and the time proven solutions in cryogenic measurements from the Hoffer ACE system. Graphical display and “soft keys ” allows for easy interaction between operator and the instrument. Multiple, easy... [See More]
- Display Types: Digital Display (Readouts)
- Rates Displayed: Volumetric; Totalizer
- Media Type: Liquid
- Local Interface: Digital Front Panel
from Spirax-Sarco
The M850 is a flexible and easy to use flow computer that accurately calculates mass and energy flow for steam, gas and liquids across a wide variety of applications. [See More]
- Display Types: Digital Display (Readouts)
- Rates Displayed: Mass
- Media Type: Liquid; Gas/Steam
- Local Interface: Digital Front Panel
from KOBOLD Instruments, Inc.
Product Features. Display Rate or Total. Batching Version Available. 2 Presets for Rate or Total. Fully Scalable. Analog or Serial Communications. NEMA 4X Front Panel. Pulse Input to 10 kHz. KOBOLD's MRT series of controllers offers users a full range of frequency input control options. Through use... [See More]
- Display Types: Digital Display (Readouts)
- Rates Displayed: Totalizer
- Media Type: Liquid
- Local Interface: Digital Front Panel
from Aalborg Instruments
Design Features. Displays instantaneous, total and accumulated flow rates. Built-in Flow Linearizer (10 point linearization of the flow curve). Up to 47 different volumetric and mass flow engineering units. Large 13mm (0.51") digits for flow rate and 5.5mm (0.21") for Total. Digital RS-232 or RS-485... [See More]
- Display Types: Digital Display (Readouts)
- Rates Displayed: Volumetric; Mass; Totalizer
- Media Type: Liquid; Gas/Steam
- Local Interface: Digital Front Panel; Computer Interface
from Liquid Controls Group; a Unit of IDEX Corporation
LectroCount3 „ ¢ POS System is an electronic register that replaces the mechanical register, printer, calibration gears and/or adjuster mechanism. Retrofits to most truck mounted meters regardless of brand or principle of operation. This system utilizes Weights and Measures approved... [See More]
- Display Types: Digital Display (Readouts)
- Rates Displayed: Totalizer
- Media Type: Liquid
- Local Interface: Digital Front Panel
from Siemens Process Instrumentation
The SITRANS FEC920 Thermal Energy Meter, the perfect solution for taking back control of your building ’s energy costs, provides the real-time data you need to verify your building ’s climate control systems are operating efficiently. De signed with a single or dual channel system... [See More]
- Display Types: Digital Display (Readouts)
- Local Interface: Digital Front Panel
- Rates Displayed: Volumetric; Totalizer
- Inputs: 2
from OMEGA Engineering, Inc.
The DPF60 is a combination microprocessor-based digital rate indicator and integrating totalizer. It accepts inputs of 4 to 20 mA, 0 to 20 mA, 0 to 5 V, or 1 to 5 V and can be scaled for engineering units directly from the NEMA 4X (IP66) rated front panel without tweaking internal potentiometers. [See More]
- Display Types: Digital Display (Readouts)
- Rates Displayed: Totalizer
- Media Type: Liquid; Gas/Steam
- Local Interface: Digital Front Panel
from Fluidwell bv
The F126-EG flow computer has been developed to calculate corrected gas volume at normal conditions. The corrected volumetric flow is calculated by measuring the uncorrected volumetric flow, actual line temperature and pressure which are processed with the equations stored in the flow computer. A... [See More]
- Display Types: Digital Display (Readouts)
- Rates Displayed: Volumetric; Mass; Totalizer
- Media Type: Gas/Steam
- Local Interface: Digital Front Panel
from Flow Technology, Inc.
The SL Series Flow Computers consist of three panel-mounted display units for use with liquid and gas flowmeters. All units are easily programmed through the front keypad or with a Windowsbased PC software program. Each device has multiple assignable outputs allowing tremendous flexibility to set... [See More]
- Display Types: Digital Display (Readouts)
- Local Interface: Digital Front Panel
- Media Type: Liquid; Gas/Steam
- Generic Inputs: Pulse (Frequency) Inputs
from Florite International, Inc.
The Florite Model 990X is an innovative, technically superior, high quality and reliable microcomputer-based controller suitable for any commercial or industrial application. The instruments user configurable screw-terminal channels enable any mix of up to eight inputs and or outputs regardless of... [See More]
- Display Types: Analog Meter or Indicator; Digital Display (Readouts); Computer
- Rates Displayed: Volumetric; Velocity; Mass; Totalizer
- Media Type: Liquid; Gas/Steam
- Local Interface: Analog Front Panel; Digital Front Panel; Computer Interface
from Define Instruments
What it does: Accepts digital pulse inputs from flow sensors and meters. Dual display shows the flow rate and volume. This dual display flow batching totalizer accepts a variety of flow sensor inputs, and has a variety of advanced features, including: flow batching, volumetric pulse, in flight... [See More]
- Display Types: Digital Display (Readouts)
- Local Interface: Digital Front Panel; Computer Interface
- Rates Displayed: Totalizer
- Computer Interface: Serial
from Hoffer Flow Controls, Inc.
The “ICE ” Integrated Cryogenic Electronics incorporates the newest technological advances in electronics and the time proven solutions in cryogenic flowmeter measurement. The ICE Cryogenic System is used to measure and record LIN, LOX, LAR, CO2 and other cryogenic liquids for truck... [See More]
- Display Types: Digital Display (Readouts)
- Rates Displayed: Volumetric; Totalizer
- Media Type: Liquid
- Local Interface: Digital Front Panel
from Spirax-Sarco
The M850 is a flexible and easy to use flow computer that accurately calculates mass and energy flow for steam, gas and liquids across a wide variety of applications. [See More]
- Display Types: Digital Display (Readouts)
- Rates Displayed: Mass
- Media Type: Liquid; Gas/Steam
- Local Interface: Digital Front Panel
from Siemens Process Instrumentation
The Milltronics SF500 integrator operates with any solids flow meter with up to two strain gauge load cells or LVDT sensor. The Milltronics SF500 integrator processes sensor signals for accurate flow rate and totalized weight of bulk solids. It can take on lower level control functions traditionally... [See More]
- Display Types: Digital Display (Readouts)
- Local Interface: Digital Front Panel
- Rates Displayed: Totalizer
- Inputs: 2
from OMEGA Engineering, Inc.
The FPM-5750 Battery Operated Flow Indicator and Totalizer is compatible with the following flow sensors: FP-5300, FP-5100, FP-5200 and FP-6000 flow sensors (see related links below). The large digital display indicates flow rate and totalized flow volume simultaneously. One of the three totalizers... [See More]
- Display Types: Digital Display (Readouts)
- Rates Displayed: Velocity; Totalizer
- Media Type: Liquid
- Local Interface: Digital Front Panel
from Fluidwell bv
The E126-EL delivers accurate measurement while withstanding the harshest conditions.The corrected volumetric flow is calculated by using the thermal expansion coefficient algorithm stored in the flowcomputer. The reference temperature can be defined as desired, e.g. 15°C, 20°C or 60°F. A typical... [See More]
- Display Types: Digital Display (Readouts)
- Rates Displayed: Volumetric; Velocity; Mass; Totalizer
- Media Type: Liquid
- Local Interface: Digital Front Panel; Computer Interface
from Florite International, Inc.
The Model N920 is an embedded version of the 900 Series instrument incorporating user selectable digital and analog inputs, as well as analog and relay outputs. Other Model N920 features include .005% high accuracy PID, batch, and dose control functions. Additionally, the Model N920 encompasses rate... [See More]
- Display Types: Analog Meter or Indicator; Digital Display (Readouts); Computer
- Rates Displayed: Volumetric; Velocity; Mass; Totalizer
- Media Type: Liquid; Gas/Steam
- Local Interface: Digital Front Panel; Computer Interface
from Define Instruments
What it does: Accepts digital pulse inputs from flow sensors and meters. Displays the flow rate information and in-built totalizers convert the rate into volume. This dual totalizer flow rate controller accepts a wide range of industrial pulse and frequency flow sensor types, and is ideal for a... [See More]
- Display Types: Digital Display (Readouts)
- Local Interface: Digital Front Panel; Computer Interface
- Rates Displayed: Volumetric; Totalizer
- Computer Interface: Serial
from Hoffer Flow Controls, Inc.
The HIT-4G is a compact digital gas flow computer with temperature, pressure and compressibility compensation. The HIT-4G is configurable from the instrument front panel keypad or via Modbus communications. OUTSTANDING FEATURES. LCD display for total, rate, temperature and pressure. Non-resettable... [See More]
- Display Types: Digital Display (Readouts)
- Rates Displayed: Totalizer
- Media Type: Gas/Steam
- Local Interface: Digital Front Panel
from Spirax-Sarco
The M800 gas flow computer receives signals from various pipeline transmitters and converts them to display flowrate, total flow, pressure and temperature. The flow computer operates with Gilflo, ILVA, linear flowmeters, vortex and orifice plates. The M800 can provide density compensation for... [See More]
- Display Types: Digital Display (Readouts)
- Rates Displayed: Volumetric; Totalizer
- Media Type: Gas/Steam
- Local Interface: Digital Front Panel
from OMEGA Engineering, Inc.
FDT-40 Series ultrasonic flow and energy meters clamp on to the outside of pipes and do not come in contact with the internal liquid. The technology has inherent advantages over alternate devices including: low-cost installation, no pressure head loss, no moving parts to maintain or replace, no... [See More]
- Display Types: Digital Display (Readouts)
- Rates Displayed: Volumetric; Totalizer
- Media Type: Liquid
- Local Interface: Digital Front Panel
from Fluidwell bv
he F016 is a local indicator which displays the actual flow rate, total and accumulated total. In addition to the average K-Factor or Span, eight linearization points can be entered with their frequencies or values. The unit will interpolate between these points, greatly enhancing accuracy in any... [See More]
- Display Types: Digital Display (Readouts)
- Rates Displayed: Volumetric; Mass; Totalizer
- Media Type: Liquid; Gas/Steam
- Local Interface: Digital Front Panel
from Florite International, Inc.
The 700 Series is an economic one loop microcomputer-based instrument incorporating a digital input, as well as a relay output. Other 700 Series features include rate metering, dual totalizing, easy menu navigation, multiple audio/visual alarm functions, a serial RS-232 port, LWAN (modem)... [See More]
- Display Types: Analog Meter or Indicator; Digital Display (Readouts); Computer
- Rates Displayed: Volumetric; Velocity; Mass; Totalizer
- Media Type: Liquid; Gas/Steam
- Local Interface: Digital Front Panel; Computer Interface
from Define Instruments
What it does: Accepts mA input from a flow meter and displays a total. Offers optional relay and analog output for set point alarming and control, plus serial communications. This rate meter and totalizer is ideal for flow rate monitoring of transmitters and sensors with mA output. It features dual... [See More]
- Display Types: Digital Display (Readouts)
- Local Interface: Digital Front Panel; Computer Interface
- Rates Displayed: Volumetric; Totalizer
- Computer Interface: Serial
from Hoffer Flow Controls, Inc.
Introduction: The Nova-Flow Series of flow computers is a family of highly flexible, modular flow computers designed for basic rate and total flow display, batch control for liquid and gas flow measurement, as well as for thermal energy measurement. With more than 500,000 unique configurations... [See More]
- Display Types: Digital Display (Readouts)
- Rates Displayed: Volumetric; Totalizer
- Media Type: Liquid
- Local Interface: Digital Front Panel
from OMEGA Engineering, Inc.
The DPF301 Series comprises 4 to 20 mA loop-powered panel-mount indicators that display process variables in engineering units (GPM, LPM, psig, %RH, etc.), with an adjustable decimal point for rate and total display. Because these indicators take power directly from the current loop, the user can... [See More]
- Display Types: Digital Display (Readouts)
- Rates Displayed: Volumetric; Totalizer
- Media Type: Liquid; Gas/Steam
- Local Interface: Digital Front Panel
from Fluidwell bv
The F010 is a local indicator with large 26mm (1") high digits which displays the actual flow rate. The measuring and time unit to be displayed below the flow rate are simply selected through an alphanumeric configuration menu. No adhesive labels have to be put on the outside of the enclosure: a... [See More]
- Display Types: Digital Display (Readouts)
- Rates Displayed: Volumetric; Mass
- Media Type: Liquid; Gas/Steam
- Local Interface: Digital Front Panel
from Hoffer Flow Controls, Inc.
The Model 2005 is a microprocessor based temperature compensated flow rate indicator/totalizer that provides local display and transmits flow data for control capability. The unit is part of a cost effective family of flow products designed to accept inputs from pulse producing or analog producing... [See More]
- Display Types: Digital Display (Readouts)
- Rates Displayed: Mass; Totalizer
- Media Type: Liquid
- Local Interface: Digital Front Panel; Computer Interface
from OMEGA Engineering, Inc.
The FDT100 Series comprises advanced-technology water flowmeters. This series uses transit-time ultrasonic technology in which the signal is transmitted and received alternately between 2 flow sensors and the “time of flight ” determines the flow rate. The battery-powered transmitter... [See More]
- Display Types: Digital Display (Readouts)
- Rates Displayed: Volumetric; Totalizer
- Media Type: Liquid
- Local Interface: Digital Front Panel
from Fluidwell bv
The F090-A-PL is an economical loop powered general purpose indicator with large 26mm (1") high digits. The measuring unit to be displayed is simply selected through an alphanumeric configuration menu. No adhesive labels have to be put on the outside of the enclosure: a weather proof and... [See More]
- Display Types: Digital Display (Readouts)
- Rates Displayed: Volumetric; Mass
- Media Type: Liquid; Gas/Steam
- Local Interface: Digital Front Panel
from Hoffer Flow Controls, Inc.
Hoffer Flow Controls, Inc. of Elizabeth City, North Carolina proudly introduces the LCD HIT-4U Rate Indicator with Dual Totalizers, Modbus and Data Logging. Featuring a 6-digit rate display and separate 8-digit resettable and non-resettable flow totalizers; the HIT-4U is configurable for 4-20 mA... [See More]
- Display Types: Digital Display (Readouts)
- Rates Displayed: Volumetric; Totalizer
- Media Type: Liquid
- Local Interface: Digital Front Panel