19 Apr

Case Study: Custom Pelton Wheel Flow Meter 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 […]
19 Apr

What’s in a typical flow meter datasheet?

A typical datasheet relating to a flowmeter is given as below – this one is based on a NORSOK format: This one is for the same meter but based on an ISA format (a version used by Litre Meter which uses S20.25 as it’s base): Norsok: This is an approximate layout, typified by NORSOK. 1 General 1.01 […]
19 Apr

What’s the best chemical injection flow meter?

Litre Meter VFF rotary piston positive displacement flowmeters have proven to be the foremost solution for chemical injection flow metering applications. They are able to handle the wide range of flows at pressures from a few bar up to 10,000 and 20,000 psi (690, 1,380 bar) and higher. The FlowPod instrument has been developed after feedback […]
21 Feb

High Pressure Flow Meters – How Do We Test Them?

At Litre Meter we are industry leaders in producing high pressure flow meters. But how do we ensure the pressures our customers request, can be safely achieved? Our Production Manager Timothy Smith looks at how. Pressure Ratings Generally, the pressure ratings for our flowmeters depend on the rating of the connection. Within our standard line […]
29 Jan

Rotary Piston

A look at the rotary piston flow meter range and how the range of flow meters work. Positive displacement flow meters, 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. […]
02 Aug

Flow meters for Sodium Hypochlorite – Hazardous Area, too

Chemical Injection process: Sodium hypochlorite We look at the chemical injection process of injecting sodium hypochlorite into sea water, in a variety of settings. Sodium hypochlorite is a green/yellow liquid with the characteristic smell of chlorine. It was first used as a bleaching agent and was then discovered to be effective in controlling wound infections. Subsequently, it is […]