How do you measure Hydrogen?

Litre Meter has been in the business of hydrogen measurement since 1997 with suitable hydrogen flow meters. Last year in 2021 we sold more hydrogen flow meters than ever before, signalling 2022 will be an important year for hydrogen flow measurement. We have the capability to recommend three different measurement principles when designing a hydrogen … Read more

Wind Turbine Construction aided by KEM Flow Meters

Our Senior Applications Engineer Chris Ringer, delves into a recent Wind Turbine Construction project we were involved in. Looking at how we overcame the design challenge and application. Direct Infusion Technology is a powerful step forward in improving composites processing techniques used within the Wind Turbine Energy sector. It is applicable to infused parts from … Read more

2021 A Year In Review

A letter from our CEO Charles Wemyss  Welcome to our 2021 year in review. We have insight from different teams across the business and I also bring you some exciting 2022 business plans. 2021 brought an uneasiness for businesses across the UK and now at the end of year, it was very much impacted by … Read more

The truth behind demineralised water measurement

Here’s the fact. Demineralised water is not good for you. Measuring demin – what’s so hard? Well, demineralised water is just that – it’s water, which has probably been treated, to remove the natural minerals that occur in nature. The lack of these additives leaves the pure water actively looking for minerals to replace them. … Read more

Volumetric flow rate or mass flow rate?

As with most flowmeter selection processes the choice of volumetric or mass is decided by just a couple of criteria. Here’s how: The first step is defining the fluid type i.e. liquid, gas, steam etc. Once you’ve decided your application is liquid, the next most important criteria is cost. Whilst it’s true that some processes … Read more

The advantages of a magnetic flow meter

Our CEO Charles Wemyss looks at the benefits and advantages of an electro magnetic flow meter (also known as a magmeter). Benefits and advantages of a magnetic flow meter At first sight, the primary benefit of an electro magnetic flow meter (magmeter/magnetic flow meter) is that there is no obstruction to flow. For good measurement, the … Read more

Confused by water? Our experts select the best water flow meter for each type.

Water is a broad term in the flow meter industry. We define each type of water technology and give you a few tips to help you understand water and water flow meters better. Tap water, potable water, tapolene = drinkable water. This will  contain a selection of minerals and should have harmful viruses and contaminants … Read more

What flow units do you want to use?

What flow units do you want to use? Is that going to be litres, gallons or, maybe, a mass unit rather than a volume?

Five secrets to selecting the optimum ultrasonic flowmeter

Flow meters based on the ultrasonic principle can be excellent solutions to flow measurement problems.  Our CEO Charles Wemyss exposes five secrets to consider when selecting the best Ultrasonic flow meter. Ultrasonically conductive In traditional clamp-on ultrasonic flow meters, the transducers are clamped to the outside of the pipe and an acoustic gel is essential … Read more

What does a Coriolis flowmeter measure? – an Expert writes.

Coriolis Principle The principle of this flow meter depends on the Coriolis effect. A Coriolis mass flow meter measures: Mass flow rate Density Volume flow rate, by calculation, and Temperature In simple terms, the answer is mass flow: the amount of mass per unit of time flowing through the tubes of the meter. However, there is … Read more

What Wikipedia can’t tell you about Flowmeters

Wikipedia is a great resource but as with all pages with contributions by the public, it relies heavily on moderators and, bots. Flowmeters on Wiki Various pages on flowmeters have been created but not necessarily ideally split between technologies, markets or applications. Each lists some basics such as principles of operation and they may have … Read more

Finding the right Nitrogen flow meter

When considering a Nitrogen flow meter, all the application requirements, together with the applicable safety factors need to be considered. We look at a unique enquiry that led us to work with our partners Sierra Instruments, on developing the right nitrogen flow meter for a laboratory. Nitrogen flow meter requirement The requirement was for a … Read more

V125 flowmeter trends

We’ve noticed a trend in Chemical Injection Flowmeters Over the last year we have seen an increase in V125 flowmeter sales. Our CEO Charles Wemyss takes a closer look at the flowmeter normally used in chemical injection applications. Litre Meter’s VFF range Our range of VFF sizes goes from the very lowest flows in the … Read more

Industrial water flow meters

How discoveries dating back centuries underpin the most popular flowmeters on the current millenium.

Measuring adhesives in Automotive Batteries

Measuring adhesives in automotive batteries A look at how the KEM Helical flowmeter measures adhesives in automotive batteries and the suitability for this application. Automotive application: The replacement of conventional combustion vehicles by electric vehicles is revolutionizing the automotive sector.  A basic requirement for electromobility is efficient and reliable battery technologies. The lithium batteries used … Read more

Flow Monitoring in Hazardous Locations

All  of Litre Meter’s VFF flowmeters are certified for use in Hazardous Areas.  They are supplied with certification as standard approved to ATEX, IECEx and CSA US standards.  Normal instrumentation is the Litre Meter FlowPod which can be mounted directly on the meter or remotely. Optionally, the Fluidwell range can be used with IS specification. … Read more

What are non-invasive flowmeters? An expert view.

These types of flowmeters specifically doesn’t ‘invade’ the pipeline. By definition then, there is no obstruction to the flow which gives this type of metering a significant advantage over many others. Sign up to the Litre Meter Newsletter FlowSight Clamp-on flowmeters are typical of the non-invasive type thereby utilising the pipe itself for measurement and … Read more

The Base Model, 4 standard meters at better prices

Introducing our ”Base Model” series of VFF meters. The most popular VFF meters are now available in standard configurations at keener prices and shorter delivery times. The Base Model Range These are the LF15, MF30, VFF4 and VFF8 sizes. 1/2″NPT threaded female connections, 316L stainless steel bodies and elastomer seals complete the specification. The internals … Read more

Vinyl Acetate Coating – Accurate Flow Measurement

HIGHLY ACCURATE AND RELIABLE PROCESS CONTROL Application: Vinyl acetate Veova polymers are widely used in coating industries as a paint binder. These polymers are recommended for alkali-resistant emulsion paint with scrub resistance. The emulsions also display good weathering resistance. They are recommended for low sheen paint and exterior matt & textured paint. Typical Applications include: … Read more

Combination Flowmeter & Bluetooth Instrument

Compact & Bluetooth Pelton Wheel Meter for Low Flow

Litre Meter are pleased to announce that the combination of the field proven Pelton wheel meter with the newly introduced RT-50 from AW Lake has resulted in a unique instrument. The LMGN pelton wheel is available in a variety of flow ranges and has been integrated into the plastic housing of the RT-50 which is … Read more

What the World Would Be Like If Flowmeters Didn’t Exist?


Up well of Nilometer building with one column in the middle calibrated to measure the level of River Nile, dates from 715 AD, located in Rhoda Island, River Nile Flowmeters have many uses. Perhaps a look to their history will give us a clue to their ubiquity and necessity? The history of the flowmeter The … Read more

FlowLabPro, automatic low flow meter calibration stand

The Litre Meter temperature-controlled volumetric low-flow calibration rig FlowLabPro delivers automatic calibration of flow meters and instrumentation within a flow range of 0.0006 to 200 l/hr to an accuracy of ±0.2 per cent and a repeatability of ±0.05 per cent. Brochure. Accuracy is much greater and uncertainty is much lower than was previously achievable using … Read more

Litre Meter at Offshore Europe 2019

Ah, how time passes. It seems it was only a few weeks ago that we were were at ’17 at the AECC. We now wake up to the brand new exhibition centre situated near the airport in Aberdeen. Litre Meter are at booth 2L25 which is just on the right as you walk through the … Read more

Rotary Piston versus Turbine Flow Meters – Application strengths

We’re often asked why we recommend our VFF Rotary Piston device for chemical injection and, in particular, against the traditional turbine flowmeter.  Here are 8 specific advantages of the VFF over turbine flowmeters: Low Flow The lowest flow measurable by a VFF rotary piston positive displacement flowmeter is two orders lower, especially if the viscosity … Read more

Custom Pelton Wheel flowmeter designs

Litre Meter have manufactured pelton wheel flowmeters since 1975.  They are based on a light-weight, low inertia, plastic rotor spinning on jewelled bearings and monitored by a no-drag pick off. The standard range covers many flow rates, materials, end connections and pressure ratings.  The wide rangeability and compactness lends their design to a multitude of … Read more

Six Degrees of customisation

Litre Meter supply a range of flow meters for Oil & Gas applications. They specialise in customising a range of flowmeters to meet specific customer requirements. A good example of this is flow meters for subsea use i.e. with the ability to work subsea and transmit a flow signal signal to the surface. The image … Read more

What Flowmeter calibration techniques do Litre Meter use?

Essentially, there are three separate calibration methods that Litre Meter have in-house to calibrate a range of flowmeters.  As the fluids can vary from water to thick oil and the flows range from a few millilitres per hour to 1,000 litres per minute, there are not only three calibration methods but 10 rigs in total, … Read more

The TASI Group Continues Expansion with 2nd Acquisition in Q2

Marlborough, MA – May 9, 2019 – The TASI Group continues the growth of its Flow Segment business with the recent acquisition of Sierra Instruments, a global company specializing in the manufacture of flow measurement instrumentation.   This is the 2nd acquisition finalized by The TASI Group in just two months. Offering flow and test solutions … Read more

Pelton Wheel flowmeters

Litre Meter manufacture and distribute an enviable range of flowmeters. From the low flow robustness of the VFF positive displacement meter to the precision of the Tricor Coriolis range, Litre Meter have a solution to your tricky measurement application.  Call our engineers now to receive the best advice on meter selection and application. LM & … Read more

TASI Adds ONICON to Flow Segment Group

TASI and Onicon The TASI Group recently acquired ONICON Incorporated, a private company specializing in the design and manufacture of flow meters and energy measurement systems. ONICON addresses liquid flow, steam flow, natural gas flow, airflow, and thermal energy applications with a broad range of flow meter technologies, including electromagnetic, turbine, ultrasonic, thermal mass, vortex, … Read more

Low Flow Calibration – limits

What’s the difference between LF03, LF05 and LF15 in the context of STD, LF and ULF calibrations?

Litre Meter – who are we?

Charles Wemyss describes Litre Meter and its history concentrating on flow measurement in tough conditions.

Measuring Sodium Hypochlorite in Hazardous Areas

Sodium Hypochlorite can be difficult to measure as it requires specific wetted materials. Litre Meter have two technologies available for sodium hypochlorite flow measurement.

Flowmeters for Sodium Hypochlorite – Hazardous Area, too

Litre Meter can provide optimum solutions for a wide range of flow rates of Sodium Hypochlorite. Using a variety of materials, a flowmeter can be constructed that handles any specific concentration of NaOCl and provide a display and/or output for measurement and control.