Wednesday 13 December, 2017

The LIQUI-VIEW FAQ page displays all frequently asked questions to us and displays the answers.

LIQUI-VIEW

What is the maximum flow capacity for different LIQUI-VIEW Base models?

This table shows the maximum flow capacities for different LIQUI-VIEW Base models in several flow units. Please note, these capacities are all shown for Water. Use Fluidat on the Net to calculate to other flow units.

Instrument Model

Max. Flow

Flow in other units (Water equivalent)

LVB-06-A

LVB-06-P

10 l/min

LVB-08-A

LVB-08-P

15 l/min

LVB-10-A

LVB-10-P

40 l/min

LVB-15-A

LVB-15-P

50 l/min

LVB-20-A

LVB-20-P

85 l/min

LVB-25-A

LVB-25-P

150 l/min

IP Rating and NEMA Rating

 

The IP Rating (Ingress Protection Rating) of an instrument consists of the letters IP followed by two digits and an optional letter.  As defined in international standard IEC 60529, it classifies the degrees of protection provided against the intrusion of solid objects including body parts like hands and fingers, dust, and accidental contact (the first digit after IP), and water (the second digit after IP) in electrical enclosures. IP Rating Chart
The National Electrical Manufacturers Association (NEMA) in the United States also publishes protection ratings for enclosures similar to the IP rating system published by the International Electrotechnical Commission (IEC). NEMA however also dictates other product features not addressed by IP codes, such as corrosion resistance, gasket aging, and construction practices. NEMA Rating Chart
For this reason while it is possible to map IP Codes to NEMA ratings that satisfy or exceed the IP Code criteria, it is not possible to map NEMA ratings to IP codes, as the IP Code does not mandate the additional requirements. IP to NEMA

What happens during measurement with a vortex meter when the tube vibrates ?

In general, vortex meters are sensitive to vibrations and impact shocks. Therefore vibrations and impact shocks should be prevented in the neighbourhood of the meter.

Which liquids can be measured with LIQUI-VIEW Base?

Water and all water like liquids which are not flammable, corrosive or toxic.
With the following definitions we are able to correct the influence of media with higher viscosity than water (= media viscosit y > 1.8 cST) in order to reach a measuring accuracy of 3% fs in the range of 1.8 – 4 cST and of 4% in the range of 4 – 14 cSt (υ= viscosity in cSt).

Vortex technology, how does it work?

A Kármán vortex street is a term for a repeating pattern of swirling vortices caused by the unsteady separation of flow of a fluid over bluff bodies. It is named after the engineer and fluid dynamicist, Theodore von Kármán.

Vortex street animationVortices creation depending of the fluid velocity

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