Litre Meter specialise in the design, manufacture and supply of flowmeters. Where particles or larger pieces of waste may interfere with traditional flow meters ultrasonic and electromagnetic flowmeters lead the way. Listed below are all the flow meters within our range that are suitable for dirty liquids, slurries, effluent and waste:
Ultrasonic flowmeters measure the travelling times (transit time models) or the frequency shifts (Doppler models) of ultrasonic waves in a pre-configured acoustic field that the flow is passing through to determine the flow velocity. The Sierra range of ultrasonic (transit time) Innovasonic devices are available, click for details. Litre Meter has access to other ranges but the Innovasonic is relatively unique as not only are fixed and portable ultrasonics available but also insertion devices for tougher applications. Perfect for clamping on the outside of plastic or metal piping ultrasonic flow meters can measure water and other liquids over a range of velocities and with a certain amount of solid content. 25mm to 10000mm;±1.0% of reading (also 0.5%); 0 to ±40 ft/s (0 to ±12 m/s).
Magnetic flowmeters, also known as electromagnetic flowmeters or induction flowmeters, obtain the flow velocity by measuring the changes of induced voltage of the conductive fluid passing across a controlled magnetic field. The fluid has to be conductive so tap water and all water based chemicals are OK. Care has to be taken in measuring solvent based effluent where electromagnetic flow meters are not normally used due to low conductivity. Internal surfaces are plastic and exotic electrode materials such as platinum and titanium also enable corrosive waste chemicals to be measured. Contact Litre Meter for full details. 3mm to 2000mm although insertion units can be used up to 3000mm. ±0.2% over flow range 0.5 to 5 m/s; turndown 1000:1; maximum velocity 10 m/s.