Product Overview:

It mainly consists of a measuring tube (housing), a new type of capacitive force sensor (including a blocking element), an accumulation display, and an output part. According to different media and working conditions, suitable capacitive force sensors must be selected. Therefore, providing accurate measurement objects and parameters by users and selecting appropriate capacitive pressure sensors by manufacturers are the key to whether the product can measure accurately.

Working Principle:

When the medium flows in the measuring tube, the pressure difference generated by its own kinetic energy passing through the blocking element (target) exerts a force on the blocking element, and the magnitude of the force is proportional to the square of the medium flow velocity. Its mathematical expression is as follows:

F=CdAρ·V2/2 

In the formula: F - the force acting on the obstruction (kg) Cd - the drag coefficient of the object

A - Axial projection area of the measuring tube by the flow blocking component (mm2)

ρ - Medium density under working conditions (kg/m3)

V - average flow velocity of the medium in the measuring tube (m/s)

The force F received by the blocking element (target) is transmitted to the capacitive force sensor through a rigidly connected transmission element (measuring rod),

Capacitive force sensor generates voltage signal output: V=KF

In the formula: V - voltage output by the capacitive force sensor (mV),

K - proportionality constant,

F - Force acting on the flow blocking component (target) (kg)

Product Features:

The entire instrument is designed with no movable parts, an insertable structure, easy disassembly, and can be made of various anti-corrosion and high/low temperature resistant materials (such as Hastelloy, titanium, etc.). The whole machine can be made fully sealed without dead corners (welded form), with no leakage points, and can withstand 42MPa high pressure. The instrument is equipped with a self checking program, and the fault symptoms are clear at a glance. The sensor does not come into contact with the measured medium, and there is no wear on the components. It can be used with full reliability and can be calibrated locally using a dry calibration method, that is, the weight hanging method. Single key slot calibration can be completed with multiple installation methods to choose from, such as online insertion, low installation cost, integrated temperature and pressure compensation, and direct output of quality or standard square

Featuring optional small signal removal, non-linear correction, and selectable filtering time

Accurate measurement of gas flow rate under various working conditions of room temperature, high temperature of 500 degrees, and low temperature of -200 degrees, with an accuracy of up to 0.2%

Good repeatability, generally 0.05-0.08%, fast measurement

The pressure loss is small, only about 1/2 △ P of the standard orifice plate

Strong anti-interference and anti impurity ability

The flow range can be changed by replacing the blocking element (target) according to actual needs

Low power battery on-site display, capable of online direct reading of readings, and the display screen can simultaneously read instantaneous and cumulative flow rates as well as percentage bar charts

Easy to install and maintain

Multiple output forms, capable of transmitting various parameters remotely

Strong shock resistance, capable of measuring pulsating flow within a certain range

Technical Specifications:

Caliber: DN15 to DN500mm

Nominal pressure: 0.6-42MPa

Operating temperature: -200 ℃~+500 ℃

Accuracy: ± 0.5 to ± 1.5% FS

Range ratio: 1:15

Shell: Carbon steel; Stainless steel (or negotiated and provided according to user requirements)

Power supply method: Built in 3.6VDC lithium battery (changed every two years, without signal output); External supply 24VDC (with signal output)

Output signal: 4-20mA two-wire system; Pulse frequency range of 0-1000Hz; RS232/RS485 (or to be provided upon user request)

Protection level: IP65; IP67

Explosion proof mark: intrinsic safety type ExiallCT4; Explosion proof ExdllCT4

Execution standard: Q/BET05-06

Header display: Accumulated traffic; Instantaneous flow rate; Operating temperature; Operating pressure (only available with temperature pressure compensation); Rod shaped full-scale percentage; Fault self check, connection type: flange pipeline type.

Typical applications:

1. Gases: coal gas, air, hydrogen, natural gas, nitrogen, liquefied petroleum gas, hydrogen peroxide, flue gas, methane, butane, chlorine gas, etc.   

2. Liquids: heavy oil, paraffin, asphalt, edible oil, residual oil, diesel, mine water, detergent, soy sauce, gasoline, silicone oil, syrup, solvent, perfume, sea water, aviation kerosene, soap ketone water, glucose, oleic acid, brine, paste, ink, coolant, glycol, mineral oil, liquid sugar, automotive coatings, resin, butter, vegetable oil, liquid oxygen, shampoo, toothpaste, gel, fuel, milk, bleach, conditioner, soda, additives, cleaning agent, alkaline, ammonia, marine oil, chemical reagent, kerosene, dye, water, nitric acid, several solutions with high boiling point, Lard, alcohol, oil, ethylene, polypropylene, methylbenzene, etc.  

3. Steam type: superheated steam, saturated steam.  

For more product information, please consult our toll free hotline at +0086 400 880 6367