Intelligent SteamVortex Flowmetersummary:
Intelligent steam flowmeterThe quantity control system is a new metering product that integrates various mature technologies such as flow measurement, pressure measurement, temperature measurement, and high-temperature pipeline fluid control. It is carefully designed and produced for steam heating users, with stable and accurate measurement and reliable intelligent control. The system has multiple characteristics such as power failure data protection, support for power-off measurement and power-off judgment, convenient networking, multiple anti-theft protections, support for large-diameter measurement, convenient installation and annual inspection, and economic rationality.
Functional Features
1. Sensors, sealing components, structural materials, control parts, etc. with superior high-temperature performance and steam contact can withstand the impact of high temperature. In different situations, they can ensure that the sealing part has no leakage and the measurement control works normally at a high temperature of 425 ℃, reaching the international advanced level.
2. Supporting large caliber measurement, it can support DN25~300 caliber steam measurement and control. This caliber range cannot be achieved by an integrated measurement system. If users have other special requirements, they can also consult and negotiate.
3. The first measurement part uses high-performance vortex flow sensors, combined with pressure transmitters for pressure compensation and Pt100 temperature transmitters for temperature compensation, which can accurately measure the volume flow rate, mass flow rate, heat flow rate, etc. of superheated steam and saturated steam. 4. The system has already considered the issues of inner diameter of pipelines and sealing gaskets, and users do not need to replace internal components.

Specification
1 nominal diameter (mm)
Full tube type: DN10、15、20、25、32、40、50、65、80、100、125
150, 200, 250, 300, 350, 400, 450, 500, 600
2 Connection methods
Flange card type
National standard GB is used for national standard pipelines
DIN standard is used for European imported equipment matching pipelines or DIN standard pipelines
ANSI standard is used for American imported equipment matching pipelines or ANSI standard pipelines
3 nominal pressure (MPa)
Liquid 2.0 2.5 4.0 (5.0) (10.0)
Gas and Steam 2.0 2.5 4.0 (5.0)
4. Medium temperature (℃)
-40-80 ℃ for liquids and gases
-40~150 ℃ for liquids and gases
-40~300 ℃ is used for liquids, gases, saturated steam, and superheated steam
-40-350 ℃ for superheated steam
5 Accuracy (±%)
Flow sensor - pulse output: 0.5 1.0
Flow transmitter - standard current output: one

6 body, vortex generator, probe body material
1Cr18Ni9Ti is used for conventional low corrosion media (standard supply)
316 is used for conventional corrosive media
316L is used for food and other media
Hastelloy alloy is used for highly corrosive media
7 Applicable media
Gases: various gases such as air, oxygen, nitrogen, natural gas, liquefied gas, ammonia, etc
Liquids: various chemical liquids such as water, light oil, liquefied petroleum, acid, alkali, etc
Steam: saturated steam and superheated steam
8 Flow velocity range (m/s)
Liquid 0.3~7
Gas 3~60
Steam 3~70
9 output signals
Voltage pulse frequency signal: high level ≥ 5V, low level<1V, square wave, pulse duty cycle 1:1, emitter follower output (optional open collector output)
Standard current signal: a 4-20mA standard current signal proportional to the flow rate.
Display instantaneous flow rate and cumulative flow rate locally, while outputting 4-20mA standard current signal and pulse frequency signal proportional to the flow rate.
10 Power Supply
Voltage pulse type DC12V DC24V
Standard current type DC24V
Standard current output with local display DC24V
Lithium battery power supply
11 Explosion proof mark
Intrinsic safety ExiaICT-4
Explosion proof ExdIICT1-T4
12 Protection Levels
IP65 for indoor and outdoor installation
IP68 is suitable for installation in water immersed environments
13 Environmental conditions
Environmental temperature -40~+55 ℃
Relative humidity 5-90 (%)
Atmospheric pressure 86~106 (kPa)

Intelligent steam flowmeterDetermination of caliber
Determination of flowmeter diameter for measuring gas flow rate
When measuring ambient temperature and pressure air, the flow range applicable to the instrument is shown in Table (1)