What is the difference between the standard diameter DN3 and the nominal diameter 4mm of a flow meter?

flowgauge39127

DateTime 09/17/2026 Show 26

『Flow meter diameter』Related information(v cone flow meter|rotary gas meter|gallon meter|gear meter|metal tube rotameter|glass tube rotameter|nutating disk meter|transit time ultrasonic flow meter|wedge flow meter|pd meters|hydraulic flow meter|ultrasonic water flow meter|water flow meter|air flow meter|magnetic water flow meter|oxygen flow meter|gas flow meter|argon flow meter|air velocity meter|gasoline flow meter|fuel flow meter|ultrasonic water meter|digital water meter|nitrogen flow meter|solid flow meter|Oxygen tank flow meter|digital water flow meter|diesel fuel flow meter|steam flow meter|02 flow meter|compressed air flow meter|oil flow meter|liquid flow meter)

What is the maximum diameter that a vortex flowmeter can achieve?

The vortex flowmeter can have a maximum diameter of up to DN1000 and a minimum diameter of DN25. It has two specifications: flange connection and insertion, and can also achieve a maximum temperature of 350 ℃. The output methods include pulse output with display and on-site display with 4-20mA. There is also a two-wire system without display, which does not require vertical measurement and only provides temperature compensation or pressure compensation.

2. What are the measurement ranges of electromagnetic flow meters?

1、 Electromagnetic flowmeter is a very sensitive flowmeter that can measure the flow rate of conductive liquids. It is also economical and has a diameter of generally DN10-- DN2000. It can measure sewage or corrosive liquids and has a wide range of applications;

2、 Electromagnetic flow meters can only measure volumetric flow rates, with units such as m3/h (cubic meters/hour), L/min (liters/minute), etc. They have pure grinding instantaneous flow rate display and cumulative flow rate display;

3、 The measurement range corresponding to electromagnetic flow meters of different diameters is: (unit: m3/h): DN10:0.03-4.24; DN15:0.06---9.54; DN20:0.12---16.96; DN25:0.18---26.5; DN32:0.29---43.42; DN40:0.45---67.85; DN50:0.7---106; DN65

1.19---179; DN80

1.8---271; DN100:2.28---424; DN125:4.41---662.。。。。。 For more detailed information, please refer to the technical article on the website of Shandong Qiangsheng Automation Technology Co., Ltd.... Www.qszdh.com

3. Flow meter specifications and models

Common specifications and models of different types of flow me

Flow meter diameter
ters are summarized as follows

1. Vortex flow meter models cover different media and flow scenarios, including FS series for industrial gas measurement and micro vortex flow meters for small flow detection

Conductive liquids such as media and mud, with specifications ranging from DN1mm to several meter caliber

4. Mass flow meters are based on HH For example, according to the nominal diameter of the pipeline, the series can be divided into DN

6、DN

10、DN1

5、DN2

5、DN40、DN50、DN80、DN100( Unit: mm) There are a total of 8 specifications for physical flow meters. Taking EXAIRs 9090 model as an example, it is compatible with 1/2 "to 8" Schedule 40 iron pipes and 25mm to 101mm aluminum pipes, and can support up to 4 "copper pipe air flow measurement. • Vortex/Swirl Vortex Flowmeters: including the conventional DN20-DN200 Swirl Vortex Flowmeters from Astra Instruments and the LUGB series from Chongqing Chuanyi. Ultrasonic flow meters: such as Emerson FLUXUS G721 CA clamp type, Astra ATLS clamp type, and other models.

4. What is the difference between the standard diameter DN3 and the nominal diameter 4mm of the flowmeter? DN3 and nominal diameter 4mm refer to the same thing, only in different ways. DN is the abbreviation for the French standard "Non descriptor", also known as the European standard size (DIN, Deutsches Institut f ü r Normung). The DN standard is a system based on nominal diameter, used for the size design of pipeline systems and fittings. DN3 indicates that the nominal diameter of the flowmeter is 3 millimeters. The nominal diameter of 4mm is expressed in metric units, indicating that the diameter of the flowmeter is 4 millimeters. Therefore, both DN3 and nominal dia

『SILVER Official Website SERVICE』

Copyright2026SILVER E-Commerce
+86 15365082610