Flow

Liquid Flow Meters are measuring devices used in various applications to measure the flow rate of a liquid. Types include variable area, paddle wheel, turbine, magmeters, ultrasonic, open channel and laminar flow meters.

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Liquid Low Flow Alarm | Platon DS1431

Liquid Low Flow Alarm - Overview

Suitable for liquid low-flow or flow-failure alarm on cooling systems, water heaters or lubrication systems. This rugged sensor has a simple electrical reed switch output. Installed in a vertical line with flow upwards, the normal flow lifts the float in the sensor. A magnet encapsulated in the float then actuates a reed switch, giving contact closure. Should the flow drop to below the preset alarm level, the float falls to the rest position and the contacts open to give an alarm output. Available in 1/2” and 3/4” line sizes, with BSP female threaded connections. Alarm rates are factory set between 0.5 L/min and 10 L/min to suit most applications. The standard unit is brass and has a one-piece body suitable for high pressures, with no glands or seals to leak. The externally mounted reed switch has flying leads for local connection to a terminal block. Typical applications include water supply flow failure into heaters or boilers (where the flame or power supply is cut to prevent overheating accidents), for lubricant or cutting fluid flow failure in machine tools or gearboxes. For flow failure alarm in cooling circuits, the LF flowswitch is used on X-ray equipment, electron microscopes, transformers, radio transmitters and high frequency generators.

Liquid Low Flow Alarm - Features
Low-cost flow alarm

Simple rugged construction

Brass, BSP connections

Selectable alarm trip level (factory set)

No glands or seals

Stainless Steel and other special OEM versions available
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Precession Vortex Flowmeter | LUGB

Precession Vortex Flowmeter - Overview

This flowmeter is able to measure gas flow at low pressure, has multi-signal output and hyposensitivity flow disturbance technology. It combines the functions of gathering flow, temperature and pressure testing, and can carry out the temperature, pressure and compression factor compensation automatically. This is widely used in the measurement of natural gas, coal gasification, liquid gas, light hydrocarbon gas etc. The microprocessor has high reliability and operational precision. This leads to superior performance of flow monitoring in an inline gas pipe measurement.

Precession Vortex Flowmeter - Features
- Accuracy: 1.0~1.5%
- Repeatability: Less than 1/3 of basic error absolute value
- Working Power: 24VDC+3.6V battery power, can remove the battery
- Output Signal: 4-20mA, pulse, RS485, alarm
- Applicable Medium: All gases (except steam)
- Integrates flow probe, microprocessor, pressure and temperature sensor
- 16-bit computer chip, high integration, small volume, good performance, strong machine function
- New signal processing amplifier & unique filtration technology
- Dual-detection tech, improves detection signal strength, suppresses vibration
- LCD display - temp, pressure, instantaneous flow & accumulative flow
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Vertical Pointer Variable Area Flowmeter | QTLZ

Vertical Pointer Variable Area Flowmeter - Overview

This Variable Area Flowmeter adopts advanced technology, without contact and no hysteresis detecting changes in the angles of the magnetic field of the magnetic sensor. It has a high-performance MCU. The LCD displays the instantaneous flow, total flow, loop current, environmental temperature, and damping time. Optional 4~20mA transmission (with HART communication), pulse output, and high and low limit alarm output function. This type of intelligent signal transmitter has high precision and reliability. Suitable for small and medium flow measurement of single-phase liquid or gas with small and medium pipe diameters. Applications include Water Treatment, Food Industry, Pharmaceuticals, Petrochemicals, Paper and Chemicals.

Vertical Pointer Variable Area Flowmeter - Features
- Range ratio: 10:1 (Special type 20:1)
- Accuracy class: 2.5 (Special type 1.5% or 1.0%)
- Working pressure: DN15~DN50 PN16 (Special type 2.5MPa)
- Medium temperature: Normalised type -80℃~+220℃
- Ambient temperature: -40℃~+120℃ (Remote display without LCD≤85℃)
- Fully welded stainless steel body. Durable casing
- Independent of medium’s physical and chemical states
- Suitable for corrosive, toxic and explosive medium environments
- Interface measurement or level measurement of 2 kinds of medium with different densities
- Easy-to-read displays on all flow meter types）
- Two-wire 4~20mADC signal output available
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Wall Mount Ultrasonic Flow Meters | RWTT
Price range: R3,241.00 through R18,728.00
Wall Mount Ultrasonic flow meters - Overview

Ultrasonic flow meters operate by alternately transmitting and receiving a frequency between two transducers and measuring the time that it takes for sound to travel between the two. The difference in the transit time is directly and accurately related to the velocity of the liquid in the pipe. This wall mount ultrasonic flow meter is designed for use in a closed conduit. The transducers are clamp-on types, which in turn makes for easy installation and operation.

Wall Mount Ultrasonic flow meters - Features
- Stable and accurate measurement
- Accuracy: ±1% of reading at rates >0.2 mps
- High precision
- One flow meter for all applications
- Pipe Size: DN15mm-DN6000mm
- Easy maintenance
- Highest process safety
- Repeatability: 0.2%
- Velocity: ±32m/s
https://www.youtube.com/watch?v=eHHde2VPqoc

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Signet Paddlewheel Flow Integral Systems | 9900
Price range: R34,311.00 through R58,073.00
Signet Paddlewheel Flow Integral Systems - Overview

Signet has combined the 9900 SmartPro® Transmitter with the 515/8510 and 2536/8512 Paddlewheel Flow sensors to create integrated systems that are easy to order and simple to install. Integral systems are also available in conductivity, level, temperature, and pressure configurations. Each integral system features a 9900 Transmitter which provides a local and easy-to-read LCD display. The push button keypad makes it easy to navigate through the transmitter’s menu. The DC-powered 9900 features a scalable 4 to 20 mA output and open collector for process control. Flow Integral Systems with 9900 Transmitters are combined with Signet’s field-proven Models 515/8510 and 2536/8512. These sensors reliably perform in flow ranges from 0.3 to 6 m/s (1 to 20 ft/s) and 0.1 to 6 m/s (0.3 to 20 ft/s) respectively for pipe sizes from ½ to 8 inches. They are available in a variety of materials including polypropylene and PVDF and are easily mounted in the pipe using Signet’s comprehensive line of standard fittings.

Signet Paddlewheel Flow Integral Systems - Features
- Warning LED indicator
- Selectable error mode for current outputs, 3.6 mA or 22 mA
- Large auto-sensing backlit display with “at a glance” visibility
- Local display for sensor-mounted instruments
- Provides 4 to 20 mA output
- "Dial-type" digital bar graph
- NEMA 4X/IP65
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No Contact Ultrasonic Level Sensor | 2270
Price range: R20,712.00 through R25,911.00

No Contact Ultrasonic Level Sensor - Overview

The type 2270 is a rugged, high-performance ultrasonic level measurement sensor, having transducer and processing electronics incorporated in one single housing. It provides sophisticated echo detection features. Suitable for single and multiple tank applications. 2-wire sensors are recommended using either HART protocol or 4 to 20 mA for direct communication with a panel mount controller or a PLC. Applications include liquid level measurement in sumps or tanks or open channel flow measurement. Sensing ranges up to 8 m are available. PP and PVDF sensor bodies provide the best chemical resistance in applications where concentrated chemicals can be detected.

No Contact Ultrasonic Level Sensor - Features
- 2 wire compact sensor
- Non-contact level measuring
- Narrow 5° beam angle
- Level, volume and open channel flow
- Compact housing
- 32 points of linearisation
- Fully temperature compensated electronics
- Outstanding signal processing software - highly accurate
- PP or PVDF sensor body provides best chemical resistance
- Secondary lightning protection
- 4 to 20 mA / HART interface
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Portable Ultrasonic Flow Meter | RWTT621
Price range: R33,567.00 through R38,105.00
Portable Ultrasonic Flow Meter - Overview

This full-function portable ultrasonic flow meter enables the verification of flow readings of other meters and is great for logging flow system data values over an extended period. The innovative design includes matched precision transducers and signal processing circuitry to accurately measure the flow of most liquids over a wide range of velocities. Clamp-on transducers create no wear, zero pressure loss, and do not require process interruptions to install them since they are attached to the outside of the pipe. The meter is easily transported and installed on different pipes and sites. Its portability makes it an excellent choice for measuring flows throughout the plumbing infrastructure to verify sensor pump and valve performance.

Portable Ultrasonic Flow Meter - Features
- Easy to install
- Reduced installation time and cost
- No pressure head loss
- No moving parts to maintain or replace
- BTU function is an option
- Could be used as a portable ultrasonic energy meter
- Powerful data storage
- Supports the datasheet analysis software
https://www.youtube.com/watch?v=_dzKgiFettI&t=17s

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Clamp-on Ultrasonic Flow Meter | RWTT811
Price range: R12,712.00 through R18,728.00
Clamp-on Ultrasonic Flow Meter - Overview

Quick and easy installation and operation. It only takes a few minutes, from the start of the installation to actual data readings. The QT811 boasts a new external clamp design, which measures the flow rate without being in direct contact with medium. Compared to traditional flow meters, this measurement method eliminates pressure loss, production loss and media contamination. This in turn saves costs in installation and labor. A variety of modes are available for setting and flexibility. Suitable for all pipe sizes in the measuring range, as well as various kinds of metal and resin pipes. It has a 256*128 LCD display and shows a wide range of information.

It can operate as an ultrasonic cooling (heat) meter/ btu meter/ energy meter to monitor and measure energy (optional).

Clamp-on Ultrasonic Flow Meter - Features
- Immediate flow rate reading on device
- Quick and easy installation
- Saves on installation and labor costs
- 256*128 LCD Display
- Suitable for metal or resin piping
- No medium contamination
- No production lost during installation
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Wall Mount Ultrasonic Flow Meter | RWTT502
R18,675.00
Wall Mount Ultrasonic Flow Meter - Overview

The QT502 consists of a wall mount transmitter and is used in conjunction with either clamp-on or insertion type transducers. Ultrasonic sound waves measure the flow of water through a pipe. Designed using an FPGA chip and low-voltage broadband pulse transmission. The 240*128 backlit LCD screen with 4 line menu display is clear and user-friendly. The simple menu and 7-digit display selections make the flow meter even easier to use. It has daily, monthly, and yearly totalised flow; parallel operation of positive, negative, and net flow totalizer with scale factor. The option of adding RTD temperature sensors allows it to become an energy meter for the monitoring of energy use, helping you save energy and money.

Wall Mount Ultrasonic Flow Meter - Features
- 240*128 backlit LCD screen
- 4-line menu display
- 7-digit display
- Optional temperature sensors enable energy measurement
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Handheld Ultrasonic Flow Meter Kit | RWTTFM
Price range: R2,900.00 through R25,740.00
Handheld Ultrasonic Flow Meter Kit - Overview

The Handheld Ultrasonic Flow Meter is suitable for non-contact measurement of liquid flow. Simply install the sensor on the outer wall of the pipeline to complete the flow measurement. The instrument is small in size, making it convenient to carry whilst retaining accuracy. It utilises the time-transit measurement principle where the signal transmitted by one flow meter transducer passes through the medium in the pipe and is received by the other flow meter transducer. The second transducer then transmits the signal received by the first transducer back. The influence of the flow rate of the medium causes a time difference, allowing the flow value Q to be calculated.

Handheld Ultrasonic Flow Meter Kit - Applications

This flow meter is widely used in tap water, heating, metallurgy, chemical, machinery, energy, and other industries. It can be used for production monitoring, flow verification, temporary detection, flow inspection, water meter balance, heating network balance debugging, energy-saving monitoring, and it is a necessary tool and meter for timely flow detection.

Handheld Ultrasonic Flow Meter Kit - Features
- Linearity: 0.5%
- Repeatability: 0.2%
- Accuracy: ±1% of reading at rates>0.2 mps
- Response Time: 0-999 seconds, user-configurable
- Velocity: ±32 m/s
[embed] https://youtu.be/9V1t9F60bis [/embed]

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Flange Electromagnetic Flow Meter | RWEM
Price range: R22,128.00 through R127,858.00
Flange Electromagnetic Flow Meter - Overview

This flow meter is widely used for all conductive liquids in industry. The main advantages of using this electromagnetic flow meter is that it has no moving parts, no pressure loss and requires very little maintenance. Flange-type magnetic flow meters are available in sizes ranging from DN3 to DN3000mm and has bi-directional flow measurement. It includes a built-in self-diagnosis function, support data record function and a Bluetooth function. It also boasts various types of output signals. The electromagnetic flow meter will be affected if there’s a strong magnetic field in the surrounding environment. Suitable for use in water treatment, food industry, pharmaceutical, petrochemical, paper mill, chemical monitoring etc.

Flange Electromagnetic Flow Meter - Features
- No moving parts
- Size: DN3-DN3000mm
- Nominal Pressure: 0.6-1.6Mpa(2.5Mpa/4.0Mpa/6.4Mpa...Max 42Mpa)
- Accuracy: +/-0.5%(Standard), 0.3% or 0.2% (Optional)
- Liner: PTFE, Neoprene, Hard Rubber, EPDM, FEP, Polyurethane, PFA
- Output Signal: 4-20mA/Pulse
- Built-in self-diagnosis function
- Built-in Bluetooth function
- Minimal maintenance
*Contact us directly for other variations of the Battery Powered Electromagnetic Flow Meters

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Battery Powered Electromagnetic Flow Meter | RWEM/D
Price range: R29,441.00 through R111,229.00
Battery Powered Electromagnetic Flow Meters - Overview

The Battery Powered Electromagnetic Flow Meters are suitable for use with conductive liquids in remote areas where electricity is a problem. Conductive liquids include water, acid, alkali, milk, slurry etc.

Battery Powered Electromagnetic Flow Meters - Features
- Long life span
- Suitable for most conductive liquids
- Multiple work mode: ‘Flow Only’, ‘Flow + Pressure’, ‘Flow + Temperature’
- Infrared remote control display and operation
- 3.6V lithium battery can be changed
- Multiple network interfaces: GPRS, RS485, HART and others
*Contact us directly for other variations of the Battery Powered Electromagnetic Flow Meters

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Standard Mount Paddlewheel Flow Sensor | 515
Price range: R9,121.00 through R21,475.00

Standard Mount Paddlewheel Flow Sensor - Overview

The Model 515 sensors are offered in a variety of materials for a wide range of pipe sizes and insertion configurations. The many material choices, including PP and PVDF, make this model highly versatile and chemically compatible with many liquid process solutions. Sensors can be installed in up to DN900 (36 in.) pipes using Signet's comprehensive line of custom fittings which include tees, saddles, and weldolets. The sensors are also offered in configurations for wet-tap and intrinsically safe installation requirements. Simple to install with reliable performance, Model 515 Rotor-X paddle wheel flow sensors are highly repeatable, rugged sensors that offer exceptional value with little or no maintenance. The output signal of the Model 515 is a sinusoidal frequency capable. The wide dynamic flow range of 0.3 to 6 m/s (1 to 20 ft/s) allows the sensor to measure liquid flow rates in full pipes and can be used in low-pressure systems.

Standard Mount Paddlewheel Flow sensor - Features
- Operating range: 0.3 to 6 m/s, 1 to 20 ft/s
- Simple, economical design
- Installs into pipe sizes: DN15 to DN900, 0.5 to 36 in
- Max Pressure rating: PP 12.5 bar @ 20 °C, 180 psi @ 68 °F PVDF 14 bar @ 20 °C, 200 psi @ 68 °F
- Power source: Self-powered
- Highly repeatable output
- Chemically resistant materials
- Compatibility: 8150, 8900, 9900, 9900-1BC, 9950
- *Only Signet installation fittings
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Variable Area Flowmeter | 335
Price range: R3,590.00 through R12,097.00
Variable Area Flowmeter 335 Overview

The Variable Area Flowmeter 335 from GF Piping Systems are radially installed, dismountable meters for measuring the flow rate in industrial piping system constructions. The measuring principle is advanced and efficient. The measurement ranges, which are tailored to our customers‘ needs, and the range of materials available for the tubes and screwed fittings, allow the flow meters to be used for a wide range of applications and a great variety of media.

Function
If a medium flows upwards through the vertically mounted measuring tube at a sufficient flow velocity, the float is raised to the point at which a state of equilibrium sets in between the lifting force of the medium and the weight of the float. As the mean flow velocity is proportional to the quantity flowing through per unit of time, this state of equilibrium corresponds to the measurement of the current flow volume.

Variable Area Flowmeter 335 Features
- Easy and cost-effective measurement principle.
- No additional energy required for the operation.
- Easy reading of the measured value.
- Available scale range from 50 l/h up to 60 000 l/h.
- Printed double scale for water in percent and l/h.
- Special scales for liquid and gaseous media can be attached.
- Wide range of materials.
- Break-proof and corrosion-resistant.
- Large dimensions with guiding rod (PVDF-coated).
Datasheet

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Slurry Electromagnetic Flow Meter | RWEM/J
Price range: R46,331.00 through R174,362.00
Slurry Electromagnetic Flow Meter - Overview

Noise is common in process fluids containing solid particulates. This can influence the measurement. The slurry magnetic flow meter adopts square wave excitation and 25Hz/30Hz high excitation. This eliminates interference between the sharp wave noise generated by solid particles, ensuring accurate measurement of viscous mediums. Applications include cement slurry, sludge, gypsum slurry, paper pulp, juice, syrup, ore slurry, coal slurry, etc.

Slurry Electromagnetic Flow Meter - Features
- Special converter: Converter eliminates interference
- Concentration can reach 55%, and the variation range is usually less than 5%
- Excitation method: square wave excitation (4 kinds of square waves)
- Improved flow measurement stability
- Excitation Frequency: 25 Hz/30 Hz excitation frequency options
- LCD backlight display
- Instantaneous flow, total flow, flow velocity, percentage flow, etc.
*Contact us directly for other variations of the Battery Powered Electromagnetic Flow Meters

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