Flowmeter providing device and method

A technology for testing devices and flowmeters, which can be used in mass flow measurement devices, measuring devices, direct mass flowmeters, etc., and can solve problems such as large costs
CN1513110AInactive Publication Date: 2004-07-14MICRO MOTION INC
3 Cites 34 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
MICRO MOTION INC
Publication Date
2004-07-14
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

A flowmeter proving device and method for use in proving a flowmeter in situ under operating conditions comprises a pair of standard Coriolis based mass flowmeters (2, 3) which are connected together in series by a conduit (7) connecting the fluid outlet (23) of the first flowmeter (2) to the fluid inlet (32) of the second flowmeter (3). A valved fluid supply conduit (4) is connected to the fluid inlet (22) of the first flowmeter (2), and a valved fluid return conduit (8) is connected to the fluid outlet (33) of the second flowmeter (3). These supply and return conduits (4 and 8) enable the device to be connected to a fluid flow line containing a flowmeter which is to be proved such that fluid flowing in the flow line will flow in series through the flowmeter to be proved and the two flowmeters (2 and 3) of the proving device. The device includes control means which is operative to use the second flowmeter (3) as a master meter to check the accuracy of the flowmeter to be proved, and the first flowmeter (2) as a check meter for the master meter (3).
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The present invention relates to a flowmeter inspection device and method for field inspection of flowmeters under actual operating conditions. Background technique

[0002] The device is primarily used to verify mass flow meters, especially Coriolis mass flow meters, but can be used to verify the accuracy of any flow meter placed in an operating position where fluid normally flows and capable of measuring internal or external fluid properties. Such flow meters include specific gravity, viscometer and volumetric flow meters as well as mass flow meters.

[0003] Coriolis mass flow meters are known and disclosed in a number of patents such as US Patent Nos. 4444059 and 4422338, all of which describe mass flow meters using vibrating tubes to create a Coriolis effect relative to mass flow. US Patent No. 4491009 describes a vibrating tube hydrometer based on a Coriolis mass flow meter. The ability of a Coriolis effect mass flow meter to measure density al...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More