ZC Intelligent Differential Pressure (Equilibrium) Flow Meter

Product Description

ZC intelligent differential pressure (Equilibrium) flow meter is a great improvement based on the conventional standard orifice-plate flow meter that has only one flow passage. With more flow passages on the flow sensor, ZC flow meter ensures irregular fluid can be changed into ideal state when it passes the flow sensor, and ensures double functions of throttling or pressure tapping and reshaping standard flow field, which is a revolutionary advance for the conventional fluid measurement technology. It can be a replacement for many differential pressure flow meters (e. G. Standard orifice-plate, V cone, venturi tube, velocity-averaging tube, wedge, elbow), applicable for measuring multi fluids.

Compared with standard orifice-plate flow meter, ZC intelligent differential pressure (Equilibrium) flow meter can provide more accurate measurement by 5-10 times, 1/15 of flowing noise, 1/3 of permanent pressure loss, twice faster pressure recovery, and can correct and offset parameters by its pressure and temperature sensors according to constant changes of surrounding pressure and temperature, reaching real flow rate. This flow meter has the straight pipes whose minimal diameter can be less than 0.5D with no movable parts, making it easy as standard orifice-plate flow meter in installation and usage, saving large amount of straight pipes and energy consumption for fluid movement. It has integrated output of flow rate, temperature and pressure. It is suitable for measuring many kinds of mediums. It is widely used as energy-efficient equipment.

Measuring theory
ZC intelligent differential pressure (Equilibrium) flow meter is made from flow rate sensor, pressure sensor, temperature sensor, differential pressure transmitter and LED display screen. It's a combination equipment of flow rate output, temperature and pressure measuring. Flow rate sensor (throttling element) is an orifice-plate with many orifice rather than just one on the standard orifice-plate flow meter. It balance the flowing medium when it pass the throttling element, eddy current will be reduced to the minimum, medium will become ideal fluid approximation. Stable pressure signal will be taken through pressure sensor, volume flow and mass flow will be worked out according to Bernoulli equation. With fitted pressure and temperature sensor, the parameter of the flowing medium can be taken on-the-spot. It also output an electric signal of 4~20mA, in order to work with other equipment to achieve automatic control.

The standard orifice-plate has just one orifice, which will generate large amount of eddy current, consumption of fluid kinetic energy, and lead to serious permanent pressure loss. The noise generated by random and chaotic eddy current will cause fluctuations at the pressure taking point, and reduce the linearity and repeatability. With only one orifice on the throttling element, the medium require a very long straight pipeline to order flow and recovery the pressure.

Measuring range and model
Model DN15 DN20 DN25 DN40 DN50 DN80 DN100
Flow rate (m3/h) Liquid: 0.4 - 150m3/h; Gas: 0.4 - 4, 000m3/h *Other flowing range can be made by order.
Installation and Attentions
1. The equipment can be installed horizontal, vertical or tilt. Fluids should be flowing from bottom to the top when vertical or tilt installed. Fluids should be fulfilled the pipeline no matter which way of installation.
2. LCD back light can be switched on when working environment lack of light.
3. Display screen shouldn't be uninstalled by anyone at anytime other than manufacturer.

Available model for instant order
ZC intelligent differential pressure (Equilibrium) flow meter

	Coriolis mass flow meter	Electromagnetic flow meter	Ultrasonic flow meter	Vortex flow meter	Multi-parameter differential pressure flow meter	ZC intelligent differential pressure (Equilibrium) flow meter
Usage	Liquid or air, must be in a pipeline less than 2”, medium must be clean	Clean conductive liquid in a fulfill pipeline	Clean, free flow liquid or air	Clean, low viscosity, free flow, must be in medium or high speed	Clean liquid, steam or air	Liquid, air, mud, a two-phase flow, high speed flow, low or high viscosity flow liquid, air, steam
Medium	Liquid, air, steam	Conductive liquid	Liquid, air, steam
Weakness	Price, limited bore value	Only working on conductive liquid	Require transmission time difference, clean medium	Interference by vibration	Permanent pressure loss	Tiny interference on basic βvalue
Advantage	High accuracy	No interference, minimum pressure loss	No interference, minimum pressure loss	High accuracy, minimum pressure loss	Lower cost: integrated solutions	High accuracy and minimum pressure loss
Principle of operation	Mass flow is proportional to the torque in the pipeline	The flowing rate is proportional to the voltage generated when the liquid flow through a magnetic zone	Flowing rate is depends on the time difference between the upstream and downstream when ultrasonic pulse go through	Flow rate is in proportion to vortex	Measuring temperature and pressure, calculate mass flowing rate	Flow rate is in proportion to the square root of differential pressure which generated by changing pipe flow area

Comparison with other flow meter ____________________

	ZC	V-cone	Orifice	Nozzle	Venture	AYJ	Wedge	Bent pipe	Wing
Closure principle	Balanced throttle	Edging throttle	Centered throttle		Shrinkage pipe throttle	Dual-chamber throttle	Asymmetric throttle	Centrifugal force throttle	Wing type throttle
Measuring media	Gas, liquid, steam								Gas
Bore range	15~3,000mm		50~ 1,000 mm	50~500 mm	50~1,200mm	100~2,000mm	50~1,000 mm	100~2,000 mm	400~ 3,000 mm
Straight pipe requirements	Front 0.5D Rear 0.5D	Front 3D Rear 1D	Front 10D; Rear 5D			Front 20D Rear 10D	Front 10D; Rear 5D		Front 3D Rear 1D
Accuracy	0.3%~ 0.5%	0.5%~ 1.0%	1%~2%						3%~5%
Long-term stability	Best	Good	Worst	Worse	Good	Well			worse
Measure ratio	>10:1	10:1	3:1		5:1	10:1	3:1	10:1
Pressure loss	10%~30%	30%~ 50%	60%~100%		10%~30%	10%~20%	60%~100%	10%~20%	60%~ 100%
Anti-dust & blocking-proof	Good		Worse		Good	Worse	Good	Well	worse
Two way measurement	Yes	No					Yes		no
Reynolds number range	200~10 7	8,000~ 5X10 6	>8,000	>20,000	>80,000		>300	>100,000	>8,000
High speed measuring	Good		Worse	Good			Worse	Good
Low speed measuring	Good		Worse			Worst	Well	Worst	worse
Two fluids measurement	Best	Well	n/a		Well	Worse	n/a	Worse	n/a
Volume	Medium	Large	Small	Medium	Largest	Small	Large	Medium	Very large
Price	Medium		Low	Medium	High			medium
Life	Very long	Long	Short	Medium	Long	Medium		Long	medium

Measuring range and model________________________

Model	DN15	DN20	DN25	DN40	DN50	DN80	DN100
Flow rate (m 3 /h)	Liquid: 0.4 – 150m 3 /h; Gas: 0.4 – 4,000m 3 /h *Other flowing range can be made by order.


Productivity:	300/Day
Unit Price:	Negotiable
Shipment Terms:	FOB
Payment Terms:	T/T
Minimum Order:	10 Pieces
Price Valid Time:	From Sep 21,2011 To Sep 21,2012
Export Markets:	North America, South America, Eastern Europe, Southeast Asia, Africa, Oceania, Mid East, Eastern Asia, Western Europe
Company:	Shenyang Beixing Meter Manufacture Co., Ltd