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Weifang Yafeng Chemical Instrument Co., Ltd.




Address:Lebushan Industrial Park, Weicheng District, Weifang City, Shandong Province

Flow meter

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YFFZ metal tube float flowmeter

Overview:YFFZ metal tube float flowmeter is an intelligent instrument developed by our company. The flowmeter converts the fluid flow signal into an analog voltage signal and converts it into a 4-20 m


YFFZ metal tube float flowmeter is an intelligent instrument developed by our company. The flowmeter converts the fluid flow signal into an analog voltage signal and converts it into a 4-20 mA two-wire linear current signal output. It is loaded with HART protocol communication, and has the characteristics of high accuracy, low drift, and strong anti-interference ability. And can realize remote configuration, monitoring, maintenance, and calibration of the instrument. Can achieve production process measurement, supervision and management.

Working principle:

The medium flow generates a lift effect on the float. When the lift received by the float is in equilibrium with the gravity of the float, the float stays at a certain position, and the measured medium flow can be measured by measuring the position of the float. As shown in Figure 1, the built-in magnetic steel of the float is coupled with the magnetic steel on the axis of the angular displacement sensor. The up and down movement of the float drives the angular displacement sensor to rotate, outputs a 4-20 mA current signal, and converts it into a flow value. It consists of two parts, which can be divided into vertical installation and horizontal installation according to the connection method.

The main technical parameters:

1 main parameters

Working voltage: DC24V;

Output signal: two-wire 4 ~ 20mADC current output and load HART protocol communication

Flange standards: HG / T20592-2009; HG / T20617-2009 (or according to user requirements).

Power inlet: M20 × 1.5 (internal thread) or according to user requirements

Input impedance: > 100MΩ;

Standard load resistance: 250Ω.

Nominal pressure: DN15 ~ DN50 is PN≤10.0MPa, DN80 ~ DN100 is PN≤6.3MPa (or customized according to user requirements).

Accuracy: 1.0% FS, 1.5% FS, 2.0% FS, 2.5% FS, 4.0% FS.

Medium temperature: -40 ℃ ~ + 300 ℃.

Selection of damping time: (0 ~ 32 seconds).

Ambient temperature: -40 ° C to + 70 ° C (LCD: -20 ° C to + 70 ° C).

Explosion-proof type: intrinsically safe ExiaⅡCT4, flameproof ExdⅡCT4.

Protection class: IP67.

Measuring range

Water: 2.5 L / h to 100,000 L / h (20 ° C).

Air: 0.07 ~ 1800m3 / h (0.1013MPa, 20 ℃).

Applicable medium viscosity

DN15, DN20: η<5mPa.s (FZ15.1, FZ15.2, FZ15.3)

η<30mpa.s (FZ15.4, FZ15.5, FZ15.6, FZ15.7, FZ15.8, FZ20.1, FZ20.2)

DN25, DN40: η < 250mPa.s

DN50, DN80, DN100: η < 300mPa.s

2 Classification

Classification by installation: divided into vertical installation and horizontal installation,

Classified by applicable media:

Basic type: suitable for liquid measurement.

Damping type: suitable for gas and steam measurement.

Anti-corrosion type: lined with PTFE, suitable for measuring corrosive media.

Jacket type: used for occasions where the medium needs to be insulated or cooled.

Note: (anti-corrosion, jacket without horizontal installation type

YFFZYaFeng Intelligent Metal Tube Float Flowmeter
Caliber-XThe pipe diameter is expressed by Arabic numerals, for example, DN100mm can be expressed as -100
Pressure-1.61.0   1.6   2.0   2.5   4.0   6.3   6.3 or more
Installation typel1bottom in, top oul2top in, bottom out
T1bottom in, top out,T2bottom in, top out
T3right in, left outT4left in, right out
T5Horizontal spring
Display formzpointer
YLCD type
1Lithium battery
224VDC two-wire system
Adding mechanism0NoneWHigh temperature type
JJacket type
Ywith distance
No alarm
B-XAlarm, X is the number of alarm points
HWith communication
Explosion-proof grade
No explosion protection required
aIntrinsically Safe Exia IIT1 ~ T6
bFlameproof Exd IIBT1 ~ T6
EDigital tube totalizer
Fliquid crystal totalizer


Media Name:
Working pressure (liquid can be omitted):
Working temperature (liquid can be omitted):
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