Compressed air flow is an important parameter to describe the performance of air compressors, and also an important parameter measured in industrial processes. With the wide application of air compressors, the accurate measurement of their flow is very important for product upgrading, industrial production process control, and monitoring, and energy conservation and emission reduction.

However, due to the special features of compressed air, such as large vibration, gas-carrying water, and pulsating flow, the selection of a flowmeter is particularly careful when measuring flow.
Not all measurement methods or measuring instruments are suitable for the measurement of compressed air flow, and appropriate measurement methods and flow meters should be selected according to the characteristics of compressed air, measurement requirements, and different use conditions.

The main body of the vortex flowmeter is non streamline vortex generator. When the medium flows through the triangular cylinder at a certain speed, an alternating vortex belt is generated behind both sides of the triangular cylinder, which is called the "Karman vortex". Because the vortex is generated alternately on both sides of the vortex generator, pressure pulses are generated on both sides of the generator, so that the detection body generates alternating stress. Under the action of alternating stress, the piezoelectric element encapsulated in the detection probe generates an alternating charge signal with the same frequency as the vortex, It is amplified by the pre-amplifier and sent to the intelligent flow calculator for intelligent processing to realize the display and flow of the instantaneous flow and cumulative flow of the fluid. Communication and control of data and microcomputer systems.

Technical Parameters

SUP-LUGB-B model

1. Medium: liquid, gas, steam (saturated steam and superheated steam)

2. Diameter

Pipeline-version: DN15-DN300

3. Accuracy:

Gas without compensation: DN15-DN25--1.5%, DN32-DN200--1.0%, DN250-DN300--1.5%;
Liquid without compensation: DN15-DN300 -- 1.0%;
Temperature and pressure compensation: DN25-DN300 -- 1.5%

4. Range ratio: 

Gas density:1.2kg/m3, Range ratio: 8:1
Liquid density:1000kg/m3, Range ratio: 8:1; 
when the medium density is different, the range ratio will change.

5. Pressure:

Wafer connection: DN15-DN300 PN2.5MPa
Flange connection: DN15-DN50 PN2.5MPa
Flange connection: DN65-DN200 PN1.6MPa
Flange connection: DN250-DN300 PN1.0MPa
Note: Other pressure or other flange standards can be customized

6. Medium temperature

-40°C ~ +260°C、-40°C ~ +300°C

7. Ambient conditions:

Ambient temperature: -20℃~+55℃

8. Relative humidity (RH): 5% ~95%

9. Atmospheric Pressure: 86kPa -106kPa

10. Electrical Interface: M20*1.5 internal thread (priority).

11. Power supply: 24VDC±5%, lithium battery 3.6VDC

12. Signal output :

Instantaneous flow under working conditions corresponding voltage-frequency- pulse output (lower PWL≤1V, higher PWL≥6V); Instantaneous flow corresponding 4-20mA output(Load resistance≤300Ω)

13. Communication interface: RS485 

14. Ingress protection: IP65

15. Main body material: stainless steel

16. Pressure loss: △P≤1.2ρ工 V 2 (△P unit is Pa, ρ工 unit is kg/m3， V unit is m /s)

17. Calibration method: all flow meters should be calibrated in the way of lower reaches taking pressure before flow meters leave the factory.

18. Display mode:

Intelligent numeric alphabetic display type: twin-row numeric alphabetic LCD ( instantaneous flow rate and totalizer)

Intelligent dot matrix LCD: English 128*64 dot matrix LCD ( instantaneous flow rate, totalizer, temperature and pressure under working condition, battery voltage or density under working condition, instantaneous flow rate under working condition, send-out, time, menu modify records, power-off records, etc. )

SUP-LUGB-A model
1. Medium: liquid, gas, steam (saturated steam and superheated steam)

2. Diameter: Pipeline-version: DN10-DN500

Insertion-version: DN200-DN2000

3. Accuracy: Pipeline-version: 1.0% 1.5% (0.2% & 0.5% optional)

Insertion-version: 2.5% (1.0%&1.5% optional)

4. Flow range as per below table 2~6.

5. Pressure:

Pipeline-version wafer connection: DN10-DN500 ( priority PN2.5MPa )
Pipeline-version flange connection: DN10-DN80 ( priority PN2.5MPa )
DN100-DN200 ( priority PN1.6MPa )
DN250-DN500 ( priority PN1.0MPa )
Insertion-version attachment flange: DN200-DN2000 ( priority PN1.6MPa )
Note: wafer-version vortex flow meter assembles made-to-order flanges when the flow meter leaves the factory including companion flanges. We are able to provide GB/T9119-2000, ANSI/ASME, and DIN. JIS. KS...
Standard flanges (GB-China standard priority), pressure class recommend priority level.

6. Medium temperature:

Pipeline-version: -40°C ~ +160°C, -40°C ~ +280°C, 
-40°C ~ +350°C, -40°C~ +420°C
Insertion-version: -40°C ~ +160°C -40°C~ +200°C

7.Ambient conditions: Ambient temperature -20℃~+60℃(normal ); -20℃~ +40℃(explosion-proof )

8. Relative humidity (RH): 5% - 95%RH

9. Atmospheric Pressure: 86kPa -106kPa

10. Electrical Interface: M20*1.5 internal thread (priority).

11.Power supply: 24VDC±5%, lithium battery 3.6VDC

12. Signal output :

Instantaneous flow under working conditions corresponding voltage-frequency- pulse output (lower PWL≤1V, higher PWL≥6V)
Instantaneous flow under standard conditions corresponding voltage-frequency- pulse output (lower PWL≤1V, higher PWL≥6V)
Instantaneous flow under standard condition pulse equivalent output (lower PWL≤1V, higher PWL≥6V)
Instantaneous flow under working conditions corresponding to two-wire or three-wire 4~20mA output （load resistance≤300Ω）
Instantaneous flow under standard conditions corresponding to two-wire or three-wire 4~20mA output （load resistance≤300Ω）

13. Communication interface: RS485; HART

14.Ingress protection: IP65 (IP67, IP68 optional)

15. Main body material: stainless steel

16. Pressure loss: △P≤1.2ρ工 V 2 (△P unit is Pa, ρ工 unit is kg/m3， V unit is m /s)

17. Calibration method: all flow meters should be calibrated in the way of lower reaches taking pressure before flow meters leave the factory.

18. Display mode:

Intelligent numeric alphabetic display type: twin-row numeric alphabetic LCD ( instantaneous flow rate and totalizer)

Intelligent dot matrix LCD: English 128*64 dot matrix LCD ( instantaneous flow rate, totalizer, temperature and pressure under working condition, battery voltage or density under working condition, instantaneous flow rate under working condition, send-out, time, menu modify records, power-off records, etc. )