In-line Volumetric Liquid Flow Switches
Description
In-line volumetric liquid flow switches are devices designed to monitor and control the flow of liquid within a pipeline. They detect the presence or absence of flow and can trigger an action, such as activating an alarm or shutting down a system, based on the flow conditions.
Working Principle
In-line volumetric liquid flow switches operate by measuring the volumetric flow rate of a liquid, which is the volume of liquid passing through a point in the system per unit of time. These switches can be equipped with either solid-state or electromechanical components. Solid-state switches offer fast switching capabilities without the wear and tear associated with moving parts, while electromechanical switches provide robust control over a wider range of current and voltage options. The utility of these switches lies in their ability to ensure system safety and efficiency by providing real-time monitoring and control of liquid flow.
Applications
Volumetric liquid flow switches are used in various applications where monitoring liquid flow is critical. For example, in water systems, these switches are often made from materials like brass or bronze due to their resistance to corrosion and rust. They are also used in chemical processing industries where the flow of aggressive or abrasive liquids needs to be monitored to prevent system damage or failure.
Advantages over other Materials - Metals
Plastic materials used in volumetric liquid flow switches offer several advantages over metals. They are lightweight, extremely durable, and resistant to rust, making them suitable for applications where metal components might corrode or degrade. Additionally, plastics can be used in environments that are not prone to freezing or high-temperature expansion, providing a cost-effective alternative to metal switches in certain conditions.
Limitations
Volumetric liquid flow switches have specific limitations, such as being suitable only for liquids and requiring a minimum conductivity level of 0.05 µS/cm. Additionally, the presence of gas inclusions in the liquid can cause measurement errors, which may affect the accuracy of the flow monitoring.
Considerations
When selecting in-line volumetric liquid flow switches, several factors should be considered. Initial costs can vary depending on the materials and technology used, with solid-state switches generally being more expensive due to their advanced capabilities. Operating expenses may be lower for plastic switches due to their resistance to corrosion and reduced maintenance needs. Durability and accuracy are critical, with plastic switches offering long-lasting performance in non-corrosive environments. Replacement and maintenance costs should also be evaluated, as electromechanical switches may require more frequent servicing due to their mechanical components.
from ABB Measurement & Analytics
HygienicMaster FEH610 is ideally suited for hygienic standard applications featuring all functions required - no more and no less. The perfect device for everyday applications. Simple and economical. Field-proven powerful and flexible transmitter technology. – ABB common HMI concept. –... [See More]
- Mounting: In-line
- Pipe Diameter: 0.04 to 4.00
- Meter Technology: Electromagnetic
- End Fittings: In-line Clamp (optional feature); In-line Flanged (optional feature); Socket Weld / Union (optional feature); In-line Threaded (optional feature)
from Fluid Components Intl. (FCI)
The FLT93L inline type FlexSwitch for flow and temperature monitoring represents the first true technological breakthrough in thermal technology in over a decade. FCI is the only thermal manufacturer providing temperature compensation to ensure set point accuracy for process temperatures that vary... [See More]
- Mounting: In-line
- Pipe Diameter: 0.75 to 1.00
- Meter Technology: Thermal
- End Fittings: In-line Flanged (optional feature); In-line Threaded
from ABB Measurement & Analytics
HygienicMaster FEH630 – The first choice for all hygienic applications. Advanced features and functionality that enable you to operate more efficiently, reduce costs and increase profitably. Real-time diagnostic keep your process up and running. – Detecting critical process conditions at... [See More]
- Mounting: In-line
- Pipe Diameter: 0.04 to 4.00
- Meter Technology: Electromagnetic
- End Fittings: In-line Flanged; In-line Threaded
from ABB Measurement & Analytics
ProcessMaster FEP610 is ideally suited for industrial standard applications featuring all functions required - no more and no less. The perfect device for everyday applications. Simple and economical. Field-proven powerful and flexible transmitter technology. – ABB common HMI concept. –... [See More]
- Mounting: In-line
- Pipe Diameter: 0.10 to 80.00
- Meter Technology: Electromagnetic
- End Fittings: In-line Flanged
from ABB Measurement & Analytics
ProcessMaster FEP630 – The first choice for all industrial applications. Advanced features and functionality that enable you to operate more efficiently, reduce costs and increase profitably. Real-time diagnostic keep your process up and running. – Detecting critical process conditions... [See More]
- Mounting: In-line
- Pipe Diameter: 0.10 to 80.00
- Meter Technology: Electromagnetic
- End Fittings: In-line Flanged
from Proteus Industries Inc.
100 Series Flow Switches > Flow rates from 0.2 to 227 LPM / 0.06 to 60 GPM > Adjustable trip point > Flow switch cannot jam in Flow OK position > 5-year warranty. Active Design Assures Reliability Cannot Jam in “Flow OK ” Position Models span 0.08 to 60.0 GPM Adjustable Trip... [See More]
- Mounting: In-line
- End Fittings: In-line Threaded
- Meter Technology: Paddlewheel
- Meter Type: Volumetric Flow Meter
from OMEGA Engineering, Inc.
This switch package offers a complete solution for flow or no-flow switching in pipes or ducting ranging up to 16". The compact relay controller provides reliable actuation of valves, pumps or blowers rated up to 1 /2 HP. Common applications include low flow pump or process protection. To complete... [See More]
- Mounting: In-line
- End Fittings: In-line Threaded
- Pipe Diameter: 0.75 to 12.00
- Meter Type: Volumetric Flow Meter
from Malema Sensors
The M-100 Series is an extremely sensitive flow switch. It has been engineered to monitor vital sample flow parameters for instrumentation in process control and inert blanket gases. It is used as an auxiliary alarm monitor for flow meters and is ideally suited for applications when installed on a... [See More]
- Mounting: In-line
- Process Media Type: Liquid; Gas
- Meter Type: Volumetric Flow Meter
- Liquid Volumetric Flow Rate: 0.00 to 0.25
from Brooks Instrument
Features. Wide range of flow ratings. Operating temperature range 33 to 125 °F (1 °C to 52 °C). Pressure ratings up to 500 psig / 34 bar. Two accuracy levels to choose from: 2% or 1% Full Scale. Optional high and low-flow reed switch or inductive alarm, also for safe use in explosive... [See More]
- Mounting: In-line
- End Fittings: In-line Threaded
- Meter Technology: Rotameter; Variable Area
- Meter Type: Volumetric Flow Meter
from Bijur Delimon International
Application. Individually calibrated and adjustable, Oil Flow Meters regulate and monitor oil flow. Features. Regulate and monitor oil flow to bearings and gears. Individually calibrated and adjustable with out graphs and viscosity curves. Various flow rates available in single meters or in banks of... [See More]
- Mounting: In-line
- End Fittings: In-line Threaded
- Meter Technology: Piston
- Meter Type: Volumetric Flow Meter
from Gems Sensors & Controls
Flow Rate Settings: 0.75 GPM to 14.0 GPM. Port Size: 3/4". Primary Construction Material: Bronze. Setting Type: Adjustable. Provides accurate flow detection in water and oil with 1% repeatability. Flow settings on the adjustable version can be easily changed without disassembly. A shuttle by-pass... [See More]
- Mounting: In-line
- End Fittings: In-line Threaded
- Pipe Diameter: 0.75
- Meter Type: Volumetric Flow Meter
from Orange Research, Inc.
Differential Pressure Flowmeters. Our new, fully integrated differential pressure flowmeters are compact and rugged, with directly connected, large throated, non-clogging flow nozzles. This unique design reduces size and cost while minimizing errors and leaks. Simply select the flow rate and... [See More]
- Mounting: In-line
- Pipe Diameter: 0.50 to 2.00
- Meter Technology: Flow Nozzle
- End Fittings: In-line Threaded
from Suttner America Company
Reed switch encased in protective vacuum sealed glass tube eliminating exposure to corrosive cleaning chemicals.. Mounts further downstream in pumping system than traditional vacuum switches, thereby minimizing potential leak points that can cause vacuum switches to close.. Easy reed switch... [See More]
- Mounting: In-line
- End Fittings: In-line Threaded
- Pipe Diameter: 0.38
- Meter Type: Volumetric Flow Meter
from Bionetics
Rheotherm flow meters are an excellent, and often times the only choice for reliable liquid flow measurement at low flow rates. For flow rates from 1 gallon/year (10 cc/day) to a few GPM, they provide repeatable liquid flow measurement with little or no maintenance. Options for hazardous locations... [See More]
- Mounting: In-line
- Pipe Diameter: 0.06 to 1.00
- Meter Technology: Thermal
- End Fittings: In-line Flanged (optional feature); In-line Threaded (optional feature); Tube End/Hose Nipple; Sanitary
from Sitron
The CF12 series of thermal flow switches is designed to monitor flow status of liquids and gases and can also be used to detect level. A chain of 8 LED ’s gives the user a visual indication of the flow status of the switch. There are two red LEDs that indicate whether or not the unit has... [See More]
- Mounting: In-line
- End Fittings: In-line Threaded
- Pipe Diameter: 0.25 to 0.50
- Meter Type: Volumetric Flow Meter
from KOBOLD Instruments, Inc.
Product Features. No Features Available [See More]
- Mounting: In-line
- End Fittings: In-line Threaded
- Meter Technology: Paddlewheel
- Meter Type: Volumetric Flow Meter
from Invotec Solutions Ltd.
The Tracer Electronic Switching Flowmeter is designed for permanent installation to closely monitor water flow andtemperature conditions. Selectable analogue signal transmits 0 to 5 or 0 to 10 Volts; signal is scaleable for flow and temperature. The SPDT switch in the Tracer flow meter can be wired... [See More]
- Mounting: In-line
- End Fittings: In-line Threaded
- Meter Technology: Turbine
- Meter Type: Volumetric Flow Meter
from AW Company
304 Stainless steel or 316Ti bodies [See More]
- Mounting: In-line
- Pipe Diameter: 0.25
- Meter Technology: Oval Gear
- End Fittings: In-line Threaded
from General Pump
The General Pump flow switch is designed to operate in response to a low volume, low pressure flow and still allow for a high pump output flow. The system will provide reliable switching with as little as .75 GPM flow and 18 PSI from the city water supply and will also allow pump output flow up to... [See More]
- Mounting: In-line
- End Fittings: In-line Threaded
- Pipe Diameter: 0.38
- Meter Type: Volumetric Flow Meter
from Clark Solutions
Use the 7000/8000 series flow meters for measuring the flow rate of liquids, gases, compressed air and steam in closed pipes. We also make indicating flow switches and flow transmitters for process indication and control. Meters feature a large easy to read analog dial with 270 degree pointer... [See More]
- Mounting: In-line
- Pipe Diameter: 0.25 to 8.00
- Meter Technology: Orifice Plates
- End Fittings: In-line Threaded; Wafer
from Proteus Industries Inc.
Proteus 8000 Series instruments provide accurate, rugged, reliable and cost-effective measurement of heat transfer fluids and other liquids from -40 to 90 °C. Customized versions can be adapted for use with liquid temperatures to 150 °C and above. A built-in relay can be used to sound an... [See More]
- Mounting: In-line
- End Fittings: In-line Threaded
- Meter Technology: Paddlewheel
- Meter Type: Volumetric Flow Meter
from OMEGA Engineering, Inc.
FL-X Series variable-area flowrate indicators utilize fluid movement to actuate a swinging vane, which drives the scale pointer and triggers the signal switch. The corrosion-resistant construction includes no breakable tubes, and a display that is unaffected by the opacity of the fluid. These... [See More]
- Mounting: In-line
- Pipe Diameter: 0.75
- Meter Technology: Variable Area
- End Fittings: In-line Threaded
from Malema Sensors
The M-100X Series is an extremely sensitive flow switch. This has been engineered to monitor vital sample flow parameters for instrumentation in process control and inert blanket gases. It is used as an auxiliary alarm monitor for flow meters and is ideally suited for applications when installed on... [See More]
- Mounting: In-line
- End Fittings: In-line Threaded
- Pipe Diameter: 0.12 to 0.25
- Meter Type: Volumetric Flow Meter
from Brooks Instrument
Reliable and affordable, MT3600 metal tube variable area flow meters satisfy the operational and reliability requirements for multiple industrial purge meter applications, such as metering coolants, pump seal fluids, lubricants under pressure and opaque fluids. Featuring high-temperature and... [See More]
- Mounting: In-line
- End Fittings: In-line Threaded; ANSI 150# RF
- Meter Technology: Rotameter; Variable Area
- Meter Type: Volumetric Flow Meter
from Gems Sensors & Controls
Flow Rate Settings: Liquids - Infinite Adjustment between 0.5 GPM and 20.0 GPM; Air/Gases - See chart. Port Size: 1/2" NPT. Primary Construction Material: Brass or Stainless Steel. Setting Type: Adjustable. These externally adjustable switches are ideal for protecting machine tools from coolant flow... [See More]
- Mounting: In-line
- Pipe Diameter: 0.50
- Meter Technology: Piston
- End Fittings: In-line Threaded
from Orange Research, Inc.
Fixed Set-Point Flow Switches. Our 30000 Series fixed set-point flow switches have factory-preset settings. The many features and the adjustability found on our other models have been designed out. Their compact size and basic profile results in low-cost switches that can be mounted where space is... [See More]
- Mounting: In-line
- End Fittings: In-line Threaded
- Pipe Diameter: 0.25
- Meter Type: Volumetric Flow Meter
from Suttner America Company
Vertical mounting position and free floating brass magnet configuration. [See More]
- Mounting: In-line
- End Fittings: In-line Threaded
- Pipe Diameter: 0.38
- Meter Type: Volumetric Flow Meter
from KOBOLD Instruments, Inc.
Product Features. Flow Rates From 0.02 to 12 GPM. PTFE or Brass Bodies. Frequency Output Standard. Optional Digital Display, Transmitters, Totalizer & Batch Controllers. No Straight Run Requirements. Can Be Mounted in Any Orientation. Compact, Economical Design. The DFT compact series of paddle flow... [See More]
- Mounting: In-line
- End Fittings: In-line Threaded
- Meter Technology: Paddlewheel
- Meter Type: Volumetric Flow Meter
from General Pump
Flow Switch, 3 amp, 120 Volts 96"; Cord, No Pilot Feature (5 amp Max. Carrying). The General Pump flow switch is designed to operate in response to a low volume, low pressure flow and still allow for a high pump output flow. The system will provide reliable switching with as little as .75 GPM flow... [See More]
- Mounting: In-line
- End Fittings: In-line Threaded
- Pipe Diameter: 0.38
- Meter Type: Volumetric Flow Meter
from Clark Solutions
Model DTH08 calorimetric flow sensor measures and monitors liquid flow. Its compact design makes it suitable for a wide variety of applications. Depending on the model, the device can be fitted with an analog output (4 – 20 mA or 0 – 10 V) and a switched or frequency output. The sensor... [See More]
- Mounting: In-line
- Pipe Diameter: 0.24 to 0.39
- Meter Technology: Thermal
- End Fittings: In-line Threaded
from Proteus Industries Inc.
Standard 500 Series metering flow switches are calibrated with water at approximately 25 °C / 77 °F. The use of fluids other than water may affect the accuracy of measurement due to differences in viscosity. Proteus ’ world-class calibration capability allows us to deliver instruments... [See More]
- Mounting: In-line
- End Fittings: In-line Threaded
- Meter Technology: Paddlewheel
- Meter Type: Volumetric Flow Meter
from OMEGA Engineering, Inc.
The FSW301 flow switch comprises a paddle system (1) with a permanent magnet attached (2). Above that magnet is a reed contact (3), located outside the flow of fluid. A second magnet with opposing poles (4) creates the force necessary to reset the switch back to the no flow position. When the... [See More]
- Mounting: In-line
- Pipe Diameter: 0.50 to 8.00
- Meter Technology: Paddlewheel
- End Fittings: In-line Threaded
from Malema Sensors
The M-200X Series flow switches are engineered and field tested for sensing increasing and decreasing flow rates of gases or liquids. Pressure variation effects are minimal. This series features such versatility, economy, and accuracy that they can be used in virtually any application requiring... [See More]
- Mounting: In-line
- End Fittings: In-line Threaded
- Pipe Diameter: 0.38 to 0.75
- Meter Type: Volumetric Flow Meter
from Brooks Instrument
Need reliable, durable flow measurement in high-pressure, high-temperature or hazardous process settings? The MT3750 metal tube variable area flow meter from Brooks Instrument is your hard-working answer. Constructed from high-strength steel, the MT3750 Series VA flow meter features a compact design... [See More]
- Mounting: In-line
- End Fittings: Compression; In-line Threaded
- Meter Technology: Rotameter; Variable Area
- Meter Type: Volumetric Flow Meter
from Gems Sensors & Controls
Flow Rate Settings: Liquids 0.5 GPM to 5 GPM. Port Size: 1/2" NPT. Primary Construction Material: Polypropylene. Setting Type: Fixed. These slim, inline switches reduce pressure drop to a minimum. They incorporate a unique, dual-diameter, internal bore and piston configuration to minimize flow... [See More]
- Mounting: In-line
- Pipe Diameter: 0.50
- Meter Technology: Piston
- End Fittings: In-line Threaded
from Orange Research, Inc.
Fixed-Orifice Flowmeters. Our flowmeters are designed for those applications where a rotameter is not appropriate. Consider the inherent problems of rotameters--they are difficult to read, especially with dirty or opaque fluids, have low pressure ratings and allow vertical orientation only. Now... [See More]
- Mounting: In-line
- End Fittings: In-line Threaded
- Meter Technology: Fixed Orifice
- Meter Type: Volumetric Flow Meter
from Suttner America Company
Water-flow activated switch to control the on and off of the burner. Although the most popular application is high pressure washing, the flow switch is suitable for other appliances, including carpet cleaning equipment, steam boilers and other types of pumping systems. [See More]
- Mounting: In-line
- End Fittings: In-line Threaded
- Pipe Diameter: 0.38
- Meter Type: Volumetric Flow Meter
from KOBOLD Instruments, Inc.
Product Features. Control of Very Small Liquid or Gas Flows. Wetted Parts - SS 1.4305, Borosilicate Glass, FKM. Proximity Switch or Reed Contact. Vertical Connection for In-Line Mounting. Flow switch types KSR and SVN operate on the same principle as a float-type flow indicator. Provided that the... [See More]
- Mounting: In-line
- Process Media Type: Liquid; Gas
- Meter Type: Volumetric Flow Meter
- Operating Pressure: 230
from General Pump
Flow Switch, 3 amp, 230 Volts, 48? Cord, Gauge Port [See More]
- Mounting: In-line
- End Fittings: In-line Threaded
- Pipe Diameter: 0.25 to 0.38
- Meter Type: Volumetric Flow Meter
from Clark Solutions
The model DS15 flow meters work according to the proven variable area principle. The float is moved upward in a tapered tube by the flowing medium and its upper edge indicates the flow rate by means of a scale affixed on to the measuring tube. By using a float with an integrated magnet, optional... [See More]
- Mounting: In-line
- End Fittings: In-line Threaded
- Meter Technology: Rotameter; Variable Area
- Meter Type: Volumetric Flow Meter
from OMEGA Engineering, Inc.
OMEGA ® in-line flowmeters offer high accuracy flow rate indication for oil or water and the ability to either control the flowrate or alarm on high or low flowrates. These units feature an SPDT switch which can be triggered at any point along the flow range. [See More]
- Mounting: In-line
- End Fittings: In-line Threaded
- Pipe Diameter: 0.50 to 0.75
- Meter Type: Volumetric Flow Meter
from Malema Sensors
The operating principle is based on a free floating magnetic piston which responds only to the motion of fluids within the line, not to static or system pressures. In the presence of fluid flow, controlled movement of the piston actuates an external hermetically sealed reed switch. This switch can... [See More]
- Mounting: In-line
- Pipe Diameter: 0.25
- Meter Technology: Piston
- End Fittings: Flare
from Gems Sensors & Controls
Flow Rate Settings: 0.5 GPM to 100.0 GPM. Port Size: 1" NPT to 2" NPT. Primary Construction Material: Bronze or Stainless Steel. Setting Type: Fixed. The FS-200 Series offers accurate flow detection, with 1% repeatability, over a broad range of flow settings and port sizes. Its durable construction... [See More]
- Mounting: In-line
- End Fittings: In-line Threaded
- Pipe Diameter: 1.00 to 2.00
- Meter Type: Volumetric Flow Meter
from Orange Research, Inc.
PVC Filter & Flow Monitor Instruments. Measure filter or flow performance with our unique instruments with PVC wetted parts. Save thousands of dollars with low-cost solutions. Whether you need local indication, a switch, or a transmitter for remote use, we have those solutions. Filter Monitors. [See More]
- Mounting: In-line
- End Fittings: In-line Threaded
- Meter Technology: Variable Area
- Meter Type: Volumetric Flow Meter
from General Pump
Flow Switch, 1 amp, 250 Volts, 48"; Cord, Flow Through Design. The flow switch detects the presence of water flow on the inside of the system by means of a piston which is shifted by the water itself. When the piston is moved by the water flow, the magnets contained internally stimulate a reed... [See More]
- Mounting: In-line
- End Fittings: In-line Threaded
- Pipe Diameter: 0.38
- Meter Type: Volumetric Flow Meter
from Clark Solutions
The flow meter and switch model DS06 works according to a modified variable area principle. The float is guided in a cylindrical measuring tube by means of a slotted nozzle. The flowing medium moves the float in the flow direction. An externally mounted pointer indicator is magnetically coupled to... [See More]
- Mounting: In-line
- Pipe Diameter: 0.25 to 1.25
- Meter Technology: Rotameter; Variable Area
- End Fittings: In-line Threaded
from OMEGA Engineering, Inc.
The FSW-30A flow switch is supplied with six orifices to provide 6 overlapping flow ranges from 0.12 to 8.0 GPM for water. The FSW-31 is supplied with 3 different drag discs to provide 3 overlapping ranges from 6 to 70 GPM for water. The orifices and drag discs can be changed while the switch is... [See More]
- Mounting: In-line
- End Fittings: In-line Threaded
- Pipe Diameter: 0.50 to 1.00
- Meter Type: Volumetric Flow Meter
from Malema Sensors
The M-50 Series low flow, flow switches monitor increasing and decreasing flow. They utilize a single moving part which responds to fluid (liquid or gas) flowing within a system. These switches are suitable for a wide range of applications in industrial, biomedical, and OEM products. The flow... [See More]
- Mounting: In-line
- Pipe Diameter: 0.12 to 0.25
- Meter Technology: Piston
- End Fittings: In-line Threaded
from Gems Sensors & Controls
Flow Rate Settings: 0.1 GPM to 1.5 GPM. Port Size: 9/16" - 18 UNF. Primary Construction Material: Ryton ®. Setting Type: Fixed. More robust porting hubs offer better structural integrity. Molded cable grommet offers improved moisture protection. The FS-4 Series makes flow protection economical... [See More]
- Mounting: In-line
- Pipe Diameter: 0.56
- Meter Technology: Piston
- End Fittings: In-line Threaded
from Orange Research, Inc.
Variable-Area Flowmeters. Our flowmeters are designed for those applications where a rotameter is not appropriate. Consider the inherent problems of rotameters--they are difficult to read, especially with dirty or opaque fluids, have low pressure ratings and allow vertical orientation only. Now... [See More]
- Mounting: In-line
- End Fittings: In-line Threaded
- Meter Technology: Variable Area
- Meter Type: Volumetric Flow Meter
from General Pump
Flow Switch, 3 amp, 230 Volts, 36? Cord (Mount in Vertical Position Only) [See More]
- Mounting: In-line
- End Fittings: In-line Threaded
- Pipe Diameter: 0.38
- Meter Type: Volumetric Flow Meter
from Clark Solutions
Model DOZ01 flow sensors are used wherever the flow of liquids having different viscosities must be reliably and economically measured, such as in the following cases: Central lubrication systems. Transformer oils. Aggressive/caustic liquids in the chemical industry. The model DOZ01 flow sensor with... [See More]
- Mounting: In-line
- Pipe Diameter: 0.25
- Meter Technology: Oval Gear
- End Fittings: In-line Threaded
from OMEGA Engineering, Inc.
The FPR100 Series sensors are designed with a one-piece composite rotor, sturdy unibody construction, ceramic shafts, and superior sealing, to provide superior durability and economy. The FPR110 Series, with bright orange spinning rotors provide visual indication of flow only. The FPR120 Series... [See More]
- Mounting: In-line
- End Fittings: In-line Threaded
- Pipe Diameter: 0.25 to 0.75
- Meter Type: Volumetric Flow Meter
from Malema Sensors
The M-60 Series low flow, flow switches monitor increasing and decreasing flow. They utilize a single moving part which responds to fluid (liquid or gas) flowing within a system. These switches are suitable for a wide range of applications in industrial, biomedical, and OEM products. The flow... [See More]
- Mounting: In-line
- End Fittings: In-line Threaded
- Pipe Diameter: 0.25
- Meter Type: Volumetric Flow Meter
from Gems Sensors & Controls
Flow Rate Settings: 0.75 GPM to 10.0 GPM. Port Size: 3/4". Primary Construction Material: Bronze. Setting Type: Fixed. Provides accurate flow detection in water and oil with 1% repeatability. Flow settings on the adjustable version can be easily changed without disassembly. A shuttle by-pass vane... [See More]
- Mounting: In-line
- End Fittings: In-line Threaded
- Pipe Diameter: 0.75
- Meter Type: Volumetric Flow Meter
from General Pump
Flow Switch, 3 amp, 120 Volts 96"; Cord with Pilot Feature (5 amp Max. Carrying). The General Pump flow switch is designed to operate in response to a low volume, low pressure flow and still allow for a high pump output flow. The system will provide reliable switching with as little as .75 GPM flow... [See More]
- Mounting: In-line
- End Fittings: In-line Threaded
- Pipe Diameter: 0.38
- Meter Type: Volumetric Flow Meter
from Clark Solutions
The flow meter and switch model DS02 works according to a modified variable area principle. The float is guided in a cylindrical measuring tube by means of a spring. The flowing medium moves the float in the flow direction. A Reed contact is mounted outside the meter in a sealed housing. When the... [See More]
- Mounting: In-line
- Pipe Diameter: 0.25 to 1.00
- Meter Technology: Rotameter; Variable Area
- End Fittings: In-line Threaded
from OMEGA Engineering, Inc.
The FPR-200 series flowrate sensor integrates rugged tangential turbine technology with a precision digital-to-analog conversion circuit hermetically encapsulated within the body of the sensor. The flow sensor is ideal for measuring flowrates in cooling circuits, HVAC systems and batching... [See More]
- Mounting: In-line
- Pipe Diameter: 0.50 to 1.00
- Meter Technology: Turbine
- End Fittings: In-line Threaded
from Malema Sensors
The operating principle is based on a free floating magnetic piston which responds only to the motion of fluids within the line, not to static or system pressures. In the presence of fluid flow, controlled movement of the piston actuates an external hermetically sealed reed switch. This switch can... [See More]
- Mounting: In-line
- Pipe Diameter: 0.25 to 0.38
- Meter Technology: Piston
- End Fittings: Flare
from Gems Sensors & Controls
Flow Rate Settings: 0.5 GPM or 2.0 GPM. Port Size: 3/4" or 1" IPS. Primary Construction Material: Clear PVC. Setting Type: Fixed. Designed for low cost flow/no-flow monitoring. This series is available with a clear, transparent PVC housing which is ideal for use where visual flow confirmation is... [See More]
- Mounting: In-line
- End Fittings: In-line Threaded
- Pipe Diameter: 0.50 to 1.00
- Meter Type: Volumetric Flow Meter
from General Pump
TMT Inline Flow Switch, 5 Amp Microswitch, Minimum Activation Flow, 48"; 18 AWG Lead, No Spring, Uses Magnets For All Movements. Features. Micro-switch technology eliminates reed switch. Activates with as little as 0.5 gpm flow. Minimal pressure drop up to 12 gpm flow. Mount in vertical position [See More]
- Mounting: In-line
- End Fittings: In-line Threaded
- Pipe Diameter: 0.38
- Meter Type: Volumetric Flow Meter
from Clark Solutions
The flow meter and switch model DS01 works according to a modified variable area principle. The float is guided in a cylindrical measuring glass by means of a spring. The flowing medium moves the float in the flow direction. The upper edge of the float shows the momentary flow via a burnt-in scale... [See More]
- Mounting: In-line
- Pipe Diameter: 0.25 to 1.00
- Meter Technology: Rotameter; Variable Area
- End Fittings: In-line Threaded
from OMEGA Engineering, Inc.
The FSW530 Series flow switches are capable of detecting extremely low liquid flow rates from 13 mL/ minute up to 10 L/minute with a full scale switch accuracy of ±1.0% or better! A wide variety of fluids may be measured. Repeatable results are achieved using a patented pelton-type... [See More]
- Mounting: In-line
- Pipe Diameter: 0.12 to 0.38
- Meter Technology: Turbine
- End Fittings: In-line Threaded
from Malema Sensors
AD-15/ADI-15/ADT-15 series flow switches can be fitted with local flow indicators. AD series flow switches can be used for monitoring liquid and gas flows. Features. Can be mounted vertically or horizontally. Alarms : Reed switch. Analog Output : 4-20mA transmitter (ADT-15 only). It does not need... [See More]
- Mounting: In-line
- Process Media Type: Liquid; Gas
- Meter Type: Volumetric Flow Meter
- Liquid Volumetric Flow Rate: 0.07 to 70.40
from Gems Sensors & Controls
Flow Rate Settings: 0.25 GPM to 5.0 GPM. Port Size: 3/4" NPT. Primary Construction Material: Polypropylene. Setting Type: Fixed. The FS-500 offers low cost flow monitoring with a variety of switch actuation points and low pressure drop. All wetted parts are polypropylene or stainless steel, making... [See More]
- Mounting: In-line
- End Fittings: In-line Threaded
- Pipe Diameter: 0.75
- Meter Type: Volumetric Flow Meter
from General Pump
Flow Switch, 5 Amp, 250 Volts, New High Flow Flow Switch, 4 GPM minimum activation, 12? 18 AWG LEAD. Features. Micro-switch technology eliminates reed switch. Activation below 4.0 gpm. Minimal pressure drop up to 25 gpm flow. Mount in vertical position [See More]
- Mounting: In-line
- End Fittings: In-line Threaded
- Pipe Diameter: 0.50
- Meter Type: Volumetric Flow Meter
from Clark Solutions
The DV08 flow meter is fitted with twin helical screws, which rotate in opposite directions due to the flow of product being monitored. The rotational speed is proportional to the flow rate. The rotary motion of the screws is detected by a sensor which emits two pulses per revolution. Each pulse... [See More]
- Mounting: In-line
- Pipe Diameter: 1.00 to 2.00
- Meter Technology: Screw Spindle
- End Fittings: In-line Flanged (optional feature); In-line Threaded (optional feature)
from OMEGA Engineering, Inc.
The FSW500 offers low cost flow monitoring with a variety of switch actuation points and low pressure drop. All wetted parts are polypropylene or stainless steel, making this switch ideal for a wide range of chemical and temperature requirements. The FSW500 is ideal for equipment cooling including... [See More]
- Mounting: In-line
- End Fittings: In-line Threaded
- Pipe Diameter: 0.75
- Meter Type: Volumetric Flow Meter
from Malema Sensors
Malema's 2000 series variable area purge meters use a tapered borosilicate glass tube with a fine threaded regulating valve for precise flow adjustment. Various flow tube lengths such as 100 mm, 150 mm and 300 mm are available. It's compact construction with reduced dimensions facilitates easy... [See More]
- Mounting: In-line
- End Fittings: In-line Threaded
- Pipe Diameter: 0.25 to 0.75
- Meter Type: Volumetric Flow Meter
from Gems Sensors & Controls
Flow Rate Settings: Liquids - 0.1 GPM to 1.5 GPM; Air/Gases - see chart. Port Size: 1/4" NPT. Primary Construction Material: Brass or Stainless Steel. Setting Type: Fixed. This series of precision-calibrated switches provide reliable and consistent performance; repeatability is within 1%. FS-925... [See More]
- Mounting: In-line
- Pipe Diameter: 0.25
- Meter Technology: Piston
- End Fittings: In-line Threaded
from General Pump
Flow Switch, 5 Amp, 250 Volts, New High Flow Flow Switch, 4 GPM minimum activation, 12? 18 AWG LEAD, with Weatherpack connector. Features. Micro-switch technology eliminates reed switch. Activation below 4.0 gpm. Minimal pressure drop up to 25 gpm flow. Mount in vertical position. 3-way black... [See More]
- Mounting: In-line
- End Fittings: In-line Threaded
- Pipe Diameter: 0.50
- Meter Type: Volumetric Flow Meter
from Clark Solutions
Series 1100 flow switches are manufactured to exacting standards and provide accurate flow detection for most applications. Product inspection involves calibrated tools and gages traceable to National Bureau of Standards. The flow swtches are broadly used in machine tools, HVAC equipment and any... [See More]
- Mounting: In-line
- End Fittings: In-line Threaded
- Pipe Diameter: 1.38
- Meter Type: Volumetric Flow Meter
from OMEGA Engineering, Inc.
The FL-W Series of water flow monitors can be used with flows from 1 gph up to 90 gpm. These flowmeters utilize the fluid ’s movement to actuate a swinging vane (or piston), which drives the scale pointer and triggers the signal switch. SPECIFICATIONS: Signal Switch: 3-Wire SPDT, 15 A @ 125... [See More]
- Mounting: In-line
- Pipe Diameter: 0.75 to 2.00
- Meter Technology: Piston
- End Fittings: In-line Threaded
from Gems Sensors & Controls
Flow Rate Settings: Liquids - 50-300 cc/min.; Air/Gases - See Chart at Bottom of Page. Port Size: 1/4" NPT. Primary Construction Material: Brass or Stainless Steel. Setting Type: Fixed. These switches provide accurate detection of excessive or insufficient flow rates in such applications as:... [See More]
- Mounting: In-line
- Pipe Diameter: 0.25
- Meter Technology: Piston
- End Fittings: In-line Threaded
from General Pump
TMT Inline Flow Switch, 5 Amp Microswitch, Minimum Activation Flow, 48"; 18 AWG Lead, No Spring, Uses Magnets For All Movements. Features. Micro-switch technology eliminates reed switch. Activates with 1.5 gpm flow. Stainless Steel shuttle. Minimal pressure drop up to 12 gpm flow. Can be mounted in... [See More]
- Mounting: In-line
- End Fittings: In-line Threaded
- Pipe Diameter: 0.38
- Meter Type: Volumetric Flow Meter
from Clark Solutions
Series 1800 flow switches are manufactured to exacting standards and provide accurate flow detection for most applications. Product inspection involves calibrated tools and gages traceable to National Bureau of Standards. Switch function involves magnet equipped PVC shuttle that is displaced at the... [See More]
- Mounting: In-line
- End Fittings: Socket Weld / Union
- Pipe Diameter: 1.00
- Meter Type: Volumetric Flow Meter
from Gems Sensors & Controls
Flow Rate Settings: 0.10 GPM to 1.50 GPM. Port Size: 1/4" NPT. Primary Construction Material: Brass, Stainless Steel. Setting Type: Fixed. Measuring only 1" x 2-3/4" (25 mm-70 mm), these compact switches are ideal for use where space is at a premium. Designed for use with water and oil, these... [See More]
- Mounting: In-line
- Pipe Diameter: 0.25
- Meter Technology: Piston
- End Fittings: In-line Threaded
from General Pump
TMT Inline Flow Switch, 5 Amp Microswitch, Minimum Activation Flow, 48"; 18 AWG Lead, No Spring, Uses Magnets For All Movements. Features. Micro-switch technology eliminates reed switch. Activates with 1.25 gpm flow. Stainless Steel shuttle. Minimal pressure drop up to 12 gpm flow. Can be mounted in... [See More]
- Mounting: In-line
- End Fittings: In-line Threaded
- Pipe Diameter: 0.38
- Meter Type: Volumetric Flow Meter
from Clark Solutions
Series 2100 flow switches are manufactured to exacting standards and provide accurate flow detection for most applications. Product inspection involves calibrated tools and gages traceable to National Bureau of Standards. The switches function as a magnet embedded in a spring loaded polysulfone... [See More]
- Mounting: In-line
- End Fittings: In-line Threaded
- Pipe Diameter: 0.56
- Meter Type: Volumetric Flow Meter
from Gems Sensors & Controls
Flow Rate Settings: 0.25 GPM to 2.00 GPM. Port Size: Multiple. Primary Construction Material: Brass or Stainless Steel. Setting Type: Fixed. These rugged inline flow switches use 100 micron filtration and are less susceptible to clogging than other high-pressure inline flow switches. The one-piece... [See More]
- Mounting: In-line
- Pipe Diameter: 0.38 to 0.50
- Meter Technology: Piston
- End Fittings: Compression; In-line Threaded
from Clark Solutions
Series 2600 flow switches are manufactured to exacting standards and provide accurate flow detection for most applications. Product inspection involves calibrated tools and gages traceable to National Bureau of Standards. Switch function involves magnet equipped PVC shuttle that is displaced at the... [See More]
- Mounting: In-line
- End Fittings: Socket Weld / Union
- Pipe Diameter: 2.00
- Meter Type: Volumetric Flow Meter
from Gems Sensors & Controls
Low Pressure Drop Design. Flow Rate Settings: 0.25 GPM to 2.00 GPM. Port Size: 3/8" NPT Male and 1/4" Quick Disconnect (QDC) Male. Primary Construction Material: Polypropylene. Setting Type: Fixed. This rugged inline flow switch offers the same superior performance and resistance to clogging as its... [See More]
- Mounting: In-line
- Pipe Diameter: 0.25 to 2.75
- Meter Technology: Piston
- End Fittings: In-line Threaded
from Clark Solutions
The flow meter and switch model DS03 works according to a modified variable area principle. The float is guided in a cylindrical measuring glass. The upper edge of the float shows the momentary flow via a burnt-in scale on the measuring glass. A Reed contact is mounted outside the meter in a sealed... [See More]
- Mounting: In-line
- Pipe Diameter: 0.25 to 1.25
- Meter Technology: Rotameter; Variable Area
- End Fittings: In-line Threaded
from Gems Sensors & Controls
Flow Rate Settings: 0.1 GPM to 11 GPM (0.5 LPM to 41 LPM). Port Size: 1/2" to 1-1/2" (NPT or G thread). Setting Type: Fixed. The FS-600 series flow switch uses proven thermal dispersion technology to provide a robust no moving parts flow switch even without filtration. The solid state sensor is... [See More]
- Mounting: In-line
- End Fittings: In-line Threaded
- Meter Technology: Thermal
- Meter Type: Volumetric Flow Meter
from Clark Solutions
The flow meter and switch model DS05 works according to a modified variable area principle. The float is guided in a cylindrical measuring glass by means of a spring. The flowing medium moves the float in the flow direction. The upper edge of the float shows the momentary flow via a burnt-in scale... [See More]
- Mounting: In-line
- Pipe Diameter: 0.25 to 1.25
- Meter Technology: Rotameter; Variable Area
- End Fittings: In-line Threaded
from Gems Sensors & Controls
Flow Rate Settings: 0.1 GPM to 1.0 GPM. Port Size: 1/4" NPT. Primary Construction Material: Brass. Setting Type: Fixed. A unique, patented piston design assures accuracy within 20% over a full range of viscosities - from 40 to 1000 SSU. Ideal for use in applications where liquids of different... [See More]
- Mounting: In-line
- Pipe Diameter: 0.25
- Meter Technology: Piston
- End Fittings: In-line Threaded
from Clark Solutions
The flow meter and switch model DS04 works according to a modified variable area principle. The float is guided in a cylindrical measuring tube by means of a slotted nozzle. The flowing medium moves the float in the flow direction. An externally mounted pointer indicator is magnetically coupled to... [See More]
- Mounting: In-line
- Pipe Diameter: 0.25 to 1.25
- Meter Technology: Rotameter; Variable Area
- End Fittings: In-line Threaded
from Gems Sensors & Controls
Flow Rate Settings: 0.50 GPM to 3.00 GPM. Port Size: 1/2" NPT, 3/4" NPT, 1/2" Tube Compression Fitting. Primary Construction Material: 316 Stainless Steel. Setting Type: Fixed. The FS-480 large-body inline flow switch delivers ample flow rates with minimal pressure drop. 25% larger than its FS-380... [See More]
- Mounting: In-line
- Pipe Diameter: 0.38 to 0.50
- Meter Technology: Piston
- End Fittings: Compression; In-line Threaded
from Clark Solutions
The flow meter and switch model DS08 works according to a modified variable area principle. The float is guided in a cylindrical measuring tube by means of a spring. The flowing medium moves the float in the flow direction. An externally mounted pointer indicator is magnetically coupled to the float... [See More]
- Mounting: In-line
- Pipe Diameter: 0.50 to 1.00
- Meter Technology: Rotameter; Variable Area
- End Fittings: In-line Threaded
from Clark Solutions
The flow meter and switch model DS08 works according to a modified variable area principle. The float is guided in a cylindrical measuring tube by means of a spring. The flowing medium moves the float in the flow direction. An externally mounted pointer indicator is magnetically coupled to the float... [See More]
- Mounting: In-line
- Pipe Diameter: 0.25 to 1.00
- Meter Technology: Rotameter; Variable Area
- End Fittings: In-line Threaded
from Clark Solutions
The flow meter and switch model DS07 works according to a modified variable area principle. The float is guided in a cylindrical measuring glass by means of a spring. The flowing medium moves the float in the flow direction. The upper edge of the float shows the momentary flow via a burnt-in scale... [See More]
- Mounting: In-line
- Pipe Diameter: 0.50 to 1.00
- Meter Technology: Rotameter; Variable Area
- End Fittings: In-line Threaded