How to Choose the Right Flowmeter in the Philippines

Selection Guide · Flowmeters

How to choose the right Flowmeter in the Philippines

Choosing the right flowmeter is not just about measuring flow. It is about selecting the correct technology for your media, pipe condition, flow range, accuracy requirement, installation setup and monitoring needs.

7Selection factors
5+Meter technologies
ISO9001:2015 support
Engineers inspecting a large-diameter penstock pipeline on site
Flow measurementOne of Flowtork’s core product areas
Reviewed by Flowtork’s engineering team · Updated 2026
Why it matters

For industrial facilities, utilities, treatment plants, process lines and site operations, the wrong flowmeter can lead to inaccurate readings, unstable signals, unnecessary maintenance and downtime. The right flowmeter should fit both the process requirement and the actual site condition.

At Flowtork, flow measurement is one of our core product areas. We supply and support flowmeters and data loggers from trusted brands such as Flow-Tronic, Badger Meter and other principal makers — with options for open-channel flow, full-pipe measurement, clamp-on ultrasonic metering, insertion flow measurement, electromagnetic flow measurement and remote data logging using Ashridge data loggers.

Interactive · 60-second start

Not sure where to begin? Narrow it down.

Answer a few questions about your application and we’ll point you to a likely measurement technology and matching Flowtork principal. It’s a starting point — our team confirms the final selection.

1 What media are you measuring?
2 What’s the installation constraint?
3 How will the reading be used?
4 Where does the signal go?
Your recommendation
The 7-point selection guide

Seven things to confirm before you select

There is no one-size-fits-all flowmeter. Work through each factor below — they map directly to the questions our engineers ask on every flow enquiry.

01

Start with the media being measured

The type of media is one of the first details to confirm before selecting a flowmeter. Is the application for clean water, wastewater, process water, slurry, chemical, partially filled pipes, rivers or open channels? The condition of the media affects which technology will work best.

For conductive liquids in full pipes, an electromagnetic flowmeter such as the Badger Meter ModMAG may be suitable. For dirty liquids, slurries or liquids with suspended solids, a Doppler ultrasonic solution may be a better fit. For open channels, partially filled pipes or rivers, Flow-Tronic systems like the Raven-Eye or TORPEE-MAG can support non-contact or velocity-area measurement.

ElectromagneticDoppler ultrasonicNon-contactVelocity-area
Aerial view of a water treatment facility with sedimentation basins Manila Water

Water and wastewater treatment facility. Media condition, solids and conductivity influence the recommended meter type.

02

Confirm the pipe size, channel size and installation area

Flowmeter selection depends heavily on the actual installation point. For full-pipe applications, the pipe size, pipe material, wall thickness, lining and available straight run should be reviewed. For open-channel applications, the channel shape, flow profile, water level and mounting location should be considered.

No shutdown? If the site cannot be stopped or the pipe cannot be cut, a clamp-on ultrasonic meter may be practical. Badger Meter Dynasonics clamp-on meters allow non-invasive measurement without cutting into the pipe — helpful for existing lines, surveys and verification work.
Clamp-on ultrasonic flowmeter transducers strapped to an existing pipe with a Dynasonics M2000 transmitter

Clamp-on ultrasonic flowmeter. Non-invasive options can help when cutting the pipe is not practical.

03

Know the expected flow range

Every flowmeter has a working range. Before selecting a unit, it is important to identify the expected minimum, normal and maximum flow rate.

A flowmeter that is too large or too small for the application may not read accurately. Low-flow conditions, high-flow conditions, intermittent flow or fluctuating demand should all be considered during sizing.

Min flowNormal flowMax flowTurndown
04

Decide how accurate the measurement needs to be

Not all applications require the same level of accuracy. Some applications only need general monitoring. Others require more reliable readings for process control, billing, dosing, batching, compliance, troubleshooting or performance verification.

For high-accuracy full-pipe applications, a full-bore electromagnetic flowmeter can be a strong choice. For survey work or temporary verification, a portable ultrasonic meter may be more practical. The best choice depends on how the reading will be used.

05

Inline, insertion, clamp-on or non-contact?

Different sites require different installation methods. Inline meters are installed directly into the pipe. Insertion meters are inserted into the flow path and may suit certain pipe applications. Clamp-on ultrasonic meters are mounted outside the pipe and are useful when non-invasive measurement is preferred. Non-contact systems can be used where equipment should not touch the flow.

Flowtork supports a range of flowmeter types including full-bore magnetic flowmeters, insertion meters, clamp-on ultrasonic meters, open-channel systems and data logging solutions.

InlineInsertionClamp-onNon-contact
Non-contact radar flowmeter mounted above an open channel

Non-contact flowmeter. Non-contact systems support open-channel and partially filled applications.

06

Check the required signal output and monitoring setup

A flowmeter should be compatible with the plant monitoring or control system. Before choosing a meter, confirm whether the reading will go to a local display, PLC, SCADA system, control panel, recorder or data logger.

For remote monitoring, Ashridge data loggers work with flow and level signals and can help facilities track flow data where permanent monitoring is not practical.

Stainless-steel instrumentation cabinets housing flow transmitters and data loggers

Instrumentation panel. Signal output should match the control, display or logging requirement.

07

Review the site conditions

The operating environment affects both the performance and life span of the flowmeter. Before selecting a unit, review whether the installation is indoor or outdoor, and whether it is exposed to flooding, moisture, heat, dust, vibration or difficult access. Also consider whether the site requires protection, telemetry and maintenance access.

A flowmeter should not only fit the technical measurement requirement. It should also be suitable for the actual site condition.

Indoor / outdoorIngress protectionTelemetryAccess
Quick matching guide

Common scenarios, fast.

A shortcut for the most frequent situations. Filter by what’s true for your site.

Clean full-pipe water
Electromagnetic or ultrasonic options for high-accuracy, low-maintenance measurement.
Badger Meter · Flow-Tronic →
Existing pipe, no shutdown
Clamp-on ultrasonic meter — mounts outside the pipe with no cutting or downtime.
Badger Meter Dynasonics →
Open channel or river
Non-contact or velocity-area system for partially filled and open flow.
Flow-Tronic Raven-Eye →
Remote site logging
Data logger with a compatible signal input where permanent monitoring isn’t practical.
Ashridge data logger →
Frequently asked

Flowmeter questions, answered.

Quick answers to the questions our engineers hear most often. Still unsure? Send us your application details and we’ll confirm the right choice.

Which flowmeter is best for clean water in a full pipe?
An electromagnetic (mag) flowmeter is the usual choice for clean, conductive water in a full pipe. It has no moving parts, needs little maintenance, and delivers high accuracy for process control or billing — the Badger Meter ModMAG is a typical option. The liquid must be electrically conductive and the pipe must run full.
Can I measure flow without cutting into the pipe?
Yes — a clamp-on ultrasonic meter mounts on the outside of the pipe and measures flow with no cutting and no shutdown. Badger Meter Dynasonics clamp-on meters suit existing lines, surveys and verification work. Transit-time models are used for clean liquids and Doppler models for dirty liquids or slurries.
Electromagnetic vs ultrasonic flowmeter — which is more accurate?
A full-bore electromagnetic meter is generally the more accurate option for conductive, full-pipe liquids, which is why it’s preferred for billing and process control. Clamp-on ultrasonic trades some accuracy for the ability to install non-invasively, making it the better pick when the pipe can’t be cut.
How do I measure flow in an open channel or a partially full pipe?
Use a non-contact or velocity-area system, because electromagnetic meters require a full pipe and won’t read a partially filled one. Flow-Tronic’s Raven-Eye (non-contact radar) handles open channels, rivers and partially filled pipes.
Does an electromagnetic flowmeter work on any liquid?
No — an electromagnetic meter only works on electrically conductive liquids such as water, wastewater and conductive chemicals. It cannot measure hydrocarbons, oils, ultra-pure or demineralised water, gas or steam. For those media, an ultrasonic or alternative technology is needed.
How can I monitor flow at a remote site with no permanent monitoring?
Pair the meter with a data logger that records flow and level signals where continuous monitoring isn’t practical. Ashridge data loggers connect to flow and level outputs and let a facility track data even at unmanned or remote locations.
What information does Flowtork need to recommend a flowmeter?
We need the media and its condition, the pipe or channel size and material, the expected flow range (minimum, normal and maximum), the required accuracy, the installation method, the output signal, and the site conditions. The fastest way to give us all of this is the Flowmeter Selection Checklist.

Have a question that isn’t here? Ask our team →