Bubble flowmeter iso calibration

The flow rate can then be directly calculated using the travel time and the known tube volume, or it can be read from the flow chart. The test is quick and easy to perform. SKC Ltd. You need JavaScript enabled to view it. What is Air Sampling?

Guide to the Website. The pressure varies upon location, altitude and local weather conditions. Anemometer A device for measuring wind speed or air velocity. Readings indicated from the device are generally at actual test conditions. Bell Prover A gas calibrator that immerses a "bell" of known dimensions into a bath of liquid over a specified time. This is generally used a primary source for gas flowmeter calibrations.

Blowby Meter A flowmeter used in the automotive industry for the measurement of engine blow-by gases, often utilising vortex or orifice type flowmeters. Bubble Flowmeter An instrument that uses a soap film across a known bore and times it passage of movement. Care must be taken with soap film meters due to issues with vapour pressure, permeability of the soap film, changing shape of the film and the build up of solution on the walls.

Calibration Relationship comparison of the instrument performance against a known standard. Note this does not mean adjustment to bring within specification, as is commonly misunderstood. Clamp-on Flowmeter Generally an ultra-sonic type flowmeter that is positioned on the outside of a pipe to measure the flow in the pipe using time of flight or doppler techniques. Critical Flow Nozzle A flow nozzle where the gas in the throat of the nozzle is kept above sonic velocity whilst in use, sometimes known as a sonic nozzle.

Differential pressure The difference between the two measurements of pressure in a system. Electromagnetic Flowmeter A non-intrusive style flowmeter for use on conductive liquids, mainly water. Often referred to as a Magmeter. Error of measurement The result of a measurement minus the true value of the measurand. Flow Straightner A device for conditioning flow profile, mainly used upstream of flowmeters.

Gear Meter A flowmeter that uses the meshing of gears to meter small volumes of a liquid. Most meters will be supplied with a Meter Factor calibration constant.

Gravimetric Calibration Rig A measurement system that utilises fluid mass and time for the calculation of flow rate. Hot Wire Anemometer An anemometer type for measuring wind speed or air velocity meter.

These meter types often state the velocity reading to standard conditions. These are also referred to as Thermal Anemometers. Hydrometer A measuring instrument for determining the specific gravity of a liquid or solid. International standard for the General requirements for the competence of testing and calibration laboratories.

A calibration constant for a flowmeter, defined as; number of pulses per unit volume. Often referred to as Meter Factor. Kinematic Viscosity The ratio of absolute viscosity to density, usually expressed as centistokes cSt. Laminar Flow Type of flow where the fluid moves in a parallel manner along the conduit, and has Reynolds numbers below Laminar Flowmeter A type of flowmeter that generate laminar flow through its core, and so generates a linear output in terms of pressure drop across the meter.

Home Shop Products Flowmeter. Link Buy sorbent tubes. Simplifies gas flow measurement and improves accuracy OLED display Enables repeatable analysis and compliance with standard methods Rechargeable battery point calibration traceable to UKAS standards. Add to basket. Product List. Login to see prices. Digital flowmeter With rechargeable battery. Overview The flowmeter is used to set flows on instruments with needle-valve flow control for example, the manual UNITY-xr, manual TDxr, Kori-xr and instruments fitted with internal standard capability.