Adhesives and Resins

Litre Meter specialise in the design, manufacture and supply of flowmeters. The VFF meter has been developed for 30 years and provides measurement ability over wide ranges and, if needed, at extreme pressures. Listed below are all the flow meters within our range that are suitable for adhesives, epoxy resins and similar:

Fluids and gasses all have different characteristics, which is why certain flow meters are better for specific materials. They all vary in given pressure, temperature, density, conductivity, and composition, meaning the best way to measure them can also vary. 

We have a selection of flow meters that are suitable for measuring the flow of adhesives and resins, all of which avoid the problems that can arise due to its viscous and sticky consistency to ensure an accurate reading. 

The following flow meters are designed for a range of materials, many of which with a high viscosity:

Rotary Piston Meter

One of the most common choices when it comes to measuring the rate of high viscosity materials, the rotary piston meter uses an oscillating piston for consistent accuracy and efficiency. 

Also known as a positive displacement flow meter, a rotary piston meter measures the volume of a fluid by counting known fixed volumes repeatedly, using compartments which turn with the oscillating piston. 

Each compartment contains an exact volume, which makes it easy to monitor and measure amounts, and avoid the sticky texture. The more fluid flowing, the faster the meter turns. 

Pelton Wheel

The Pelton wheel works by using a large blade area with ferrites and a sensing coil to measure and monitor the flow rate of all kinds of liquids. 

Its large blades mean that it is ideal for jobs that need to monitor and measure very low flows, just like adhesives and resins. 

As the flow enters the meter, the rotor begins to turn at a speed that is proportionate to the flow rate, and the small sensing coil detects the ferrites of each tip of the rotor blades as they pass. Itís because of this movement that the Pelton Wheel is also known as a radial turbine. 

Turbine

Used to calculate the average velocity of fluids, turbine flow meters utilise a vaned rotor that makes an accurate measurement as the fluid travels through. 

The vaned rotor is found inside the meter; itís centred on a shaft and rotates on bearings. To improve the accuracy of readings, you will also find a shaft inside a turbine flow meter, which is supported by tube bundles which provide a degree of flow conditioning for the fluid.

This model is well known for its excellent precision, as well as the diverse range of materials it can perform for. 

Helical Screw

The movement of a helical screw is controlled by the fluid; as the fluid flows through it, the meterís screws and gears are forced to rotate. 

With two, normally identical, counter rotating gears that form a continuous and constant volume cavity, itís possible to determine the flow rate per revolution. 

Helical screw flow meters work well for high viscosity fluids like adhesives or resins due to the fact that very little force is needed to rotate the gears.

Digmesa

Digmesa is well-known for their flow rate measurement and dispenser devices for liquids, as well as their consistency of high-quality products.

So many industries rely on flow measurement, and the Digmesa range of technologies has flow meters to suit various materials; some ideally suited for low pressure adhesive flow measurement and others for higher viscosity adhesives. 

Their range provides high precision measurements to ensure accuracy in whatever job the flow meter is used for. Contact factory for details. 


VFF Rotary Piston Positive displacement flowmeters, also known as PD meters, measure volumes of fluid flowing through by counting repeatedly the filling and discharging of known fixed volumes. A typical positive displacement flowmeter comprises a chamber that obstructs the flow. Inside the chamber, a rotating/reciprocating mechanical unit is placed to create fixed-volume discrete parcels from the passing fluid. In the VFF the rotor is basically a disc shape with an annular groove on its underside capable of holding and transporting flow from the chamber inlet to the outlet i.e. a rotary piston. The units are manufactured in 316 stainless steel or titanium. They can measure pulsing flows. Suitable for a wide range of adhesives and epoxies. 0.01 to 33,000 l/hr. +/-0.5% accuracy, +/-0.25% repeatability.
Pelton Wheel Also known as a radial turbine the highly efficient Pelton Wheel meter has some major advantages. The very large blade area compared with the flow inlet port size produces an exceptionally wide range flowmeter which can measure very low flows. The flow through the inlet of the meter is accurately directed onto the rotor which rotates at a speed in linear proportion to the flow rate. A small sensing coil detects the ferrites mounted in the flow meter rotor blade tips as they pass. No drag is imposed on the rotor which assists in the measurement of extremely low flows. Sapphire bearings provide a very low friction mechanically-robust bearing with long life characteristics. Turndown can be as high as 280:1. Ideally suited for low viscosity adhesive constituents measurement up to 2" pipe sizes and larger and up to 10cSt. 0.003 to 500 l/min; ±2.0% of reading (also 1.0%); some models suitable for flow measurement at higher pressure.
Turbine Inline 'axial' turbine flowmeters are velocity measuring devices - they measure the average velocity of a fluid flowing through the body of the meter. Mounted within the body of a liquid turbine flowmeter is a vaned rotor. The rotor is centred on a shaft and allowed to rotate on bearings. The shaft is supported in the housing by tube bundles that also provide a measure of flow conditioning for the fluid stream. Good for low viscosity epoxy and catalyst flow metering. Wide size range and excellent accuracy. 0.24-17 up to 3028-56775 litres/min. Overrange 150% intermittent. ±0.25% reading - typical. ±0.1% repeatability.
Helical Screw Positive displacement flowmeters, also known as PD meters, measure volumes of fluid flowing through by counting repeatedly the filling and discharging of known fixed volumes. A typical positive displacement flowmeter comprises a chamber that obstructs the flow. Inside the chamber, a rotating/reciprocating mechanical unit is placed to create fixed-volume discrete parcels from the passing fluid. The helical screw principle uses 2 counter rotating gears to form a continuous constant volume cavity. The OMK is a stainless steel version suitable for water flow metering. 0.2 to 100 litres per minute, +/-0.5 to +/-2% accuracy, +/-0.2% repeatability. Other versions like the OMG and OME flowmeter can be selected for suitable adhesives and resins; +/-0.1 to +/-0.3% accuracy, +/-0.01% repeatability. 0.1 to 7500 l/min.
Digmesa From the stringent hygiene requirements of the manufacturing process to simple dispensing measurement at point of sale the industry relies on flow measurement. The Digmesa range of technologies offer cost effectives solutions for many applications. Whether you require beer or cold drinks dispensing, cellar auditing systems, coffee makers (industrial and domestic) or flowmeters for vending machines these meters can help. Ideally suited for low pressure adhesive flow measurement using plastic bodies from Arnite, PEEK or PVDF. From about 30 ml/min to 30 litres per minute although the EPI flowmeter is positive displacement and suitable for higher viscosity adhesives at 60 ml/min to 16 litres per minute. Contact factory for details. MOQ 100 units. +/-2% reading, +/-0.25% repeatability. EPI */-1% reading linearity.