Flow

The Flow Control market encompasses various technologies and solutions designed to manage and regulate the flow of liquids, gases and other fluids across several market sectors. Flow control devices, including valves, pumps, actuators, indicators, switches and flow meters play a crucial role in industries such as Oil & Gas, Pulp & Paper, Water & Wastewater, Power Generation, Chemical Processing, Pharmaceuticals and others. Effective flow control is vital for optimizing process efficiency, ensuring safety, minimizing energy consumption and maintaining system integrity across industries.  Multiple technologies, including paddle wheel, turbine, vortex, ultrasonic, thermal dispersion and others are used, depending on the media.  Davis Controls supplies the following brands of Flow Control solutions.

Explore our solutions by clicking on the brand below:

Intek, Inc. is now The Bionetics Corporation
Rheotherm flow measurement instruments include flow meters and flow switches that provide accurate and repeatable outputs with our no-moving-parts sensor design for reliable operation with little or no maintenance. Rheotherm and RheoVac instruments consist of a flow sensing transducer and integral or remote electronics with a wide range of outputs including analog 4-20mA, 0-5vDC and 0-10vDC and as well as several digital protocols such as serial, modbus, and Hart.
Key features of the Rheotherm product family of measurement instruments include:

  • No Moving Parts
  • Highly Repeatable Output
  • Wide Rangeability
  • Low Maintenance
  • Versatile Design
  • ISO 9001:2015 Certified
Low Flow Liquid Meters

We have a unique capability to measure very low flow liquid rates – from a few gallons per minute to as low as 1 gallon per year (10 cc/day). These low flow meters can measure slurries and most low- and high-viscosity homogenous liquids, including liquid chlorine, magnesium sulfate, sodium hypochlorite, and ferric chloride.

Each flowmeter can be configured from a variety of chemically compatible alloys such as, Quartz, Hastelloy, Monel, Titanium, Tantalum, Inconel, and Stainless Steel. The unique design of these sensors creates an unobstructed path for liquid flow, so nothing makes contact with the fluid except the wall of the tube. Solids in the fluid flow cannot harm the sensor. A variety of standard or custom process connections are available, such as NPT, Tri-Clover, Flanges, or Tube Stubs to best adapt to your existing equipment.

Low Flow Gas Meters

TU and TUL sensors are ideal for measuring low gas flows, whether the gases are explosive, corrosive, dirty, or just too difficult for other meter technologies. Our low flow meters can work with most gases, including ammonia, butane, ethanol, methane, natural gas, and sulfur dioxide.  

You can also choose electropolished sensors that can be used to measure ultrahigh purity gases. These inline gas flow meters are often used on small lines (1″ or smaller) with flow rates ranging from 25 SCFM to a few hundred SCFM.

Duct Flow Meters, Air & Gas

For pipes and ducts from one inch to several feet in diameter, our chemically compatible stainless steel, Hastelloy, or titanium insertion probes provide reliable mass flow measurement. Often used to monitor stack gas, digester gas, and vent air, these mass flow measurement devices are easily installed and designed to provide years of low-maintenance service.

They are suited for use with most non-condensing gases, even explosive and corrosive gases. For areas where little or no straight run is available, the RheoVac™ flow conditioner and its unique honeycomb design works to eliminate measurement errors that routinely confound ordinary sensors. A variety of standard or custom process connections are available, such as NPT, Tri-Clover, or Flanges to best adapt to your existing equipment.

Low Flow Controller

The Rheotherm Model 210 Low Flow Controller is capable of measuring and controlling extremely low flow rates with high accuracy and reliability and can be used with most gases and homogeneous liquids with low or high viscosity. The desired flow rate setpoint is set in the flow controller and is easily adjusted by the user at the unit or remotely, and analog output of the flow rate is also available.

Flow Switches

With no mechanical parts, this technology is great for reliable low- or high-flow indication in liquid or gas service. Flow switches differ from conventional gas or liquid thermal flow meters by changing the state of an output relay once certain flow parameters are met.

Each of our flow switches has an adjustable set point—a minimum or maximum flow rate—and once the measured fluid reaches this point, the device transmits a trip signal to another device (such as a pump) that modifies the rate of flow. Flow switches are often used as a lower cost alternative to a flow meter for measuring flow if all that is needed is indication of flow beyond (above or below) a particular value.

RheoVac Multisensor Flow Monitor 

The RheoVac family of instruments from Bionetics are unique multi-sensor flow meters that incorporate four primary measurements: flow, pressure, temperature, and humidity. Using these measurements and a sophisticated calculation engine, the probe is able to separate the air and water components of the flow and provide an air mass flow rate, water mass flow rate, humidity, dew point, partial pressure and other important process parameters.

The electronics transmitter provides these outputs to your control system over analog 4-20mA, Modbus or OPC protocols. The RheoVac probe is ideal for power plant condenser performance monitoring as well as industrial drying, evaporation monitoring, vacuum pump capacity monitoring and more.

Great Plains Industries is home to GPI®, GPRO®, and FLOMEC® brands. Known for reliability and accuracy in fluid transfer and fluid measurement applications, whether you require a reliable manual hand pump or standard-duty gear pump, GPI pumps offer the perfect solution GPI, GPRO, and FLOMEC meters are designed to deliver precise and dependable metering in a variety of fluid applications, including fuel, water, solvents, and chemical processes.

These flow meters are optimized for accuracy and reliability using turbine, oval gear, ultrasonic, and nutating disc technologies.

Whether you need metering solutions for turf-irrigation, water distribution systems, fuel transfer operations, solvent handling, or chemical processing, Great Plains Industries flow meters deliver consistent results. Explore the various options for end-of-hose metering, inline metering, or pump-mounted metering applications, and find the perfect fit for your fluid measurement needs.

TM Series (Water Meters)

  • Easy to install
  • Displays in gallons, litres and cubic feet
  • Indicates Batch, Cumulative Totals and Rate of Flow
  • Available in Spigot, NPT, BSP (1”, 1-½” and 2” only), 150# ANSI Flange (3” and 4” only) and DIN Flange 
  • Non-volatile totals mean amounts are retained when batteries are replaced or power is lost
  • Alkaline battery life: 2 years

Eldridge Products, Inc. (EPI™) manufactures the Master-Touch™ and ValuMass™ thermal mass flowmeters & sensors for the measurement of virtually any gas or gas mixture. The measurement of gas flows can be an integral part of plant and process operation, a requirement for environmental reporting, a part of energy and cost savings efforts, or all three.

EPI offers gas measurement solutions for your high temperature (XT), high purity (PURE), and large duct (MultiGEN) applications. Additionally, the VAL series provides a more economical solution while maintaining the high standards that EPI has set for accuracy and reliability.

GEN meters are certified for use in ordinary locations (non-hazardous) and CSA/Cus Class 2252-03 & 2252-80 approved instruments. Assembled with stainless steel wetted materials (optional Hastelloy C-276®) the GEN series is available in both inline and insertion configurations.

Flow Measuring Instruments:  For everything from paddle flow switches to turbine flow sensors and flow meters with no moving parts (i.e. magnetic inductive or vortex) SIKA has the optimal device for your application.

For customized solutions tailored to a specific measuring task, SIKA has ten different types of sensors from which to choose the best fit.
For more than 100 years, SIKA is known for precise mechanical measuring instruments whose measuring principals cover a large portion of standard measuring technology.

This extensive product range includes industrial and dial thermometers (and matching thermowells) as well as high-quality manometers, and an extensive range of force sensors and load cells.

The product range for flow measurement technology includes devices with features just as versatile as their applications. In addition to electromagnetic flowmeters, the JUMO product range includes paddlewheel and flow sensors as well as differential pressure transmitters. The right solution is available for every application whether you want to measure the flow of gases, liquids, or sludges.

VorTek Instruments is a leading manufacturer of precision flowmeters for the measurement of liquid, gas, steam, and energy.

Technologies include vortex, ultrasonic, electromagnetic, turbine, and differential pressure. Vortek serves customers in various industries, including district energy/HVAC, chemical, food & beverage, life sciences, power generation, oil & gas, and water & wastewater.

Vortex flow meters measure fluid velocity using a principle of operation referred to as the von Kármán effect. It states that when flow passes by an obstruction in the flow path, vortices are generated in a repeating pattern.

In a vortex flow meter, this obstruction is referred to as a bluff body. The bluff body causes the process fluid to separate and form areas of alternating differential pressure known as vortices around the backside of the bluff body. In Pro-V vortex flowmeters, a sensitive piezoelectric crystal sensor detects these vortices. The frequency at which the vortices are shed is directly proportional to the flow velocity. With the fluid velocity and area of the pipe known, a volumetric flow rate is calculated.

With optional integrated temperature and pressure sensors, Pro-V vortex flowmeters can provide a compensated mass flow rate. With the energy monitoring option, Pro-V meters can also provide a reliable (BTU) energy measurement of water, thermal oils, and steam. Insertion style vortex flowmeters are a more economical option on large line sizes and can be installed under full process conditions (hot tapping).

 

Pro-V® multivariable flowmeters utilize three primary sensing elements – a vortex shedding velocity sensor, an RTD temperature sensor, and a solid-state pressure transducer – to measure the mass flow rate of gases, liquids and steam.

Systems that use external process measurements to calculate mass flow may not provide adequate compensation for the fact that process conditions can change radically between the point of velocity measurement and the point where upstream or downstream pressure and temperature measurements are being made. Because the Pro-V multivariable flowmeter measures all of these parameters in a single location, it delivers a more accurate process measurement.

Integrating multivariable output capability with a single line penetration also simplifies system complexity and helps reduce initial equipment cost, installation cost and maintenance costs.

Azbil North America supplies world-class field instrumentation to the Chemical & Petrochemical Industry. Electromagnetic flowmeters, multivariable mass flow vortex meters and advanced pressure transmitters provide accurate, stable, and reliable measurements of cooling water, wastewater, brine water, heavy media flow, and steam. High accuracy allows for tighter process control and reduced product variability.

Most Chemical and Petrochemical Industry processes run continuously in harsh environments: abrasive process slurries, corrosive chemicals, high process temperatures, poor steam quality, and other factors can damage instruments, leading to process downtime and increased production costs. Azbil’s Chemical and Petrochemical industrial automation solutions provide peace of mind when measuring and controlling pressure, level, flow, and temperature.

Integral Ultrasonic Flowmeter S-Flow

Easy Installation, Space Savings

Flow rate is “visualized” using Fuji Electric’s long-cultivated ultrasonic technologies. Contributes to energy savings and production process solutions.

  • Easy Clamp-on type by simply tightening 4 screws.
    No need for pipe modification.
  • Integrated detector and flow transmitter for space savings.
  • Built-in temperature sensor enables simultaneous measurement of flow rate and temperature (Optional).

Water Optimized Vortex Shedders: Fluidic flowmeters generate oscillations as a result of flow. Increasing flow increases the frequency of oscillation. A sensor detects the oscillations and a transmitter generates a flow measurement signal

Lubrication Optimized Vane / Piston Style: Vane-style variable area flowmeters have a spring-opposed vane that moves in relation to the flow rate. Similarly, piston variable area flowmeters use a spring-opposed piston that moves in relation to the flow rate.

Water Optimized Vane / Piston Style FlowMeter: Variable area flowmeters measure flow by allowing the flow stream to change the opening within the flowmeter by moving an internal part. When the flow increases, the fluid generates more force and moves the internal part farther.

Variable Area (Float Style): Spring-opposed float designs allow this type of flowmeter to be installed in horizontal pipes because the functioning of the float is not dependent upon gravity. These flowmeters can be read locally because their glass or plastic metering tubes have markings that relate the height of the float (that can be seen) with the flow rate of the fluid. 

Laminar Flow Element Flowmeter: Laminar flow elements, present a special case wherein the fluids are in a laminar regime (low Reynolds number) and the pressure drop is linear in relation to the flow rate. That makes it very useful for reading the low end of the scale and increases the “turn down” from the usual 10:1 to 100:1. This technology is optimal for clean gas flows.

Thermal Flowmeter for Compressed Air: In a typical thermal flowmeter, a measured amount of heat is applied to the heater of the sensor. Some of this heat is lost to the flowing fluid. As flow increases, more heat is lost. The amount of heat lost is sensed using temperature measurement(s) in the sensor. 

Paddle Wheel Flowmeter: Paddlewheel flowmeters use the mechanical energy of the fluid to rotate a paddlewheel in the flow stream. When the fluid moves faster, the paddlewheel spins proportionally faster. Shaft rotation can be sensed mechanically or by detecting the movement of the paddles. 

Coriolis Mass Flowmeter: Coriolis mass flowmeters measure the force resulting from the acceleration caused by mass moving toward (or away from) a center of rotation. In a Coriolis mass flowmeter, the “swinging” is generated by vibrating the tube(s) in which the fluid flows. The amount of twist is proportional to the mass flow rate of fluid passing through the tube(s). 

Magnetic Flowmeter: Magnetic flowmeters use Faraday’s Law of Electromagnetic Induction to determine the flow of liquid in a pipe. In a magnetic flowmeter, a magnetic field is generated and channeled into the liquid flowing through the pipe. Following Faraday’s Law, the flow of a conductive liquid through the magnetic field will cause a voltage signal to be sensed by electrodes located on the flow tube walls. When the fluid moves faster, more voltage is generated. Faraday’s Law states that the voltage generated is proportional to the movement of the flowing liquid.

Positive Displacement Flowmeter: Positive displacement is the only flow measurement technology that directly measures the volume of the fluid passing through the flowmeter. Positive displacement flowmeters achieve this by repeatedly entrapping fluid in order to measure its flow. 

Turbine Flowmeter: Turbine flowmeters use the mechanical energy of the fluid to rotate a “pinwheel” (rotor) in the flow stream. Blades on the rotor are angled to transform energy from the flow stream into rotational energy. The rotor shaft spins on bearings. When the fluid moves faster, the rotor spins proportionally faster.

Differential Pressure Flowmeter: Differential pressure flowmeters use Bernoulli’s equation to measure the flow of fluid in a pipe. Differential pressure flowmeters introduce a constriction in the pipe that creates a pressure drop across the flowmeter. When the flow increases, more pressure drop is created. Impulse piping routes the upstream and downstream pressures of the flowmeter to the transmitter that measures the differential pressure to determine the fluid flow.

Water Optimized Vane / Piston Style FlowMeter: Variable area flowmeters measure flow by allowing the flow stream to change the opening within the flowmeter by moving an internal part. When the flow increases, the fluid generates more force and moves the internal part farther.

Variable Area (Float Style): Spring-opposed float designs allow this type of flowmeter to be installed in horizontal pipes because the functioning of the float is not dependent upon gravity. These flowmeters can be read locally because their glass or plastic metering tubes have markings that relate the height of the float (that can be seen) with the flow rate of the fluid. 

Laminar Flow Element Flowmeter: Laminar flow elements, present a special case wherein the fluids are in a laminar regime (low Reynolds number) and the pressure drop is linear in relation to the flow rate. That makes it very useful for reading the low end of the scale and increases the “turn down” from the usual 10:1 to 100:1. This technology is optimal for clean gas flows.

Thermal Flowmeter for Compressed Air: In a typical thermal flowmeter, a measured amount of heat is applied to the heater of the sensor. Some of this heat is lost to the flowing fluid. As flow increases, more heat is lost. The amount of heat lost is sensed using temperature measurement(s) in the sensor. 

Paddle Wheel Flowmeter: Paddlewheel flowmeters use the mechanical energy of the fluid to rotate a paddlewheel in the flow stream. When the fluid moves faster, the paddlewheel spins proportionally faster. Shaft rotation can be sensed mechanically or by detecting the movement of the paddles. 

Coriolis Mass Flowmeter: Coriolis mass flowmeters measure the force resulting from the acceleration caused by mass moving toward (or away from) a center of rotation. In a Coriolis mass flowmeter, the “swinging” is generated by vibrating the tube(s) in which the fluid flows. The amount of twist is proportional to the mass flow rate of fluid passing through the tube(s). 

Magnetic Flowmeter: Magnetic flowmeters use Faraday’s Law of Electromagnetic Induction to determine the flow of liquid in a pipe. In a magnetic flowmeter, a magnetic field is generated and channeled into the liquid flowing through the pipe. Following Faraday’s Law, the flow of a conductive liquid through the magnetic field will cause a voltage signal to be sensed by electrodes located on the flow tube walls. When the fluid moves faster, more voltage is generated. Faraday’s Law states that the voltage generated is proportional to the movement of the flowing liquid.

Positive Displacement Flowmeter: Positive displacement is the only flow measurement technology that directly measures the volume of the fluid passing through the flowmeter. Positive displacement flowmeters achieve this by repeatedly entrapping fluid in order to measure its flow. 

Turbine Flowmeter: Turbine flowmeters use the mechanical energy of the fluid to rotate a “pinwheel” (rotor) in the flow stream. Blades on the rotor are angled to transform energy from the flow stream into rotational energy. The rotor shaft spins on bearings. When the fluid moves faster, the rotor spins proportionally faster.

Differential Pressure Flowmeter: Differential pressure flowmeters use Bernoulli’s equation to measure the flow of fluid in a pipe. Differential pressure flowmeters introduce a constriction in the pipe that creates a pressure drop across the flowmeter. When the flow increases, more pressure drop is created. Impulse piping routes the upstream and downstream pressures of the flowmeter to the transmitter that measures the differential pressure to determine the fluid flow.

Flow Switches FS8000

The robust FS8000 inline flow switch is the peak of reliability and performance in high-pressure applications. Engineered to resist clogging and deliver consistent, reliable switching, the FS8000 showcases innovation through its one-piece magnetic Ryton piston. Tailored for high-pressure applications in industrial cleaning equipment and cooling systems, it embodies the perfect synergy of straightforward design and operational dependability. Low pressure drop over the sensing range makes this the ideal solution for most applications. 

  • Flow Rate Setpoint: 0.10 – 3.0 GPM
  • Housing Material: 316 St. St.
  • Piston Material: Ryton R4
  • Maximum Pressure: 1500 psi 
  • Maximum Temperature: 275°F / 135°C 
  • Electrical Ratings: 120V AC, 0.28A; 24V DC 1.28A

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