overview
Boiler steam flowmeterThe function and classification of flow meters for measuring steam boilers and hot water boilers. Flow meters are widely used to measure the flow rate of boiler steam and feedwater. Measuring the flow rates of steam and feedwater not only provides reliable data for operators to adjust combustion and feedwater flow rates in a timely manner, but also provides a basis for efficiency testing of boiler equipment and economic accounting. The flow measurement system composed of vortex flowmeter is simple, easy to maintain, and has good economy. This series of vortex flowmeters strictly follows the principle of reliability in their design, adopting a structurally simplified optimization design scheme, and achieving high universality and interchangeability of all product components; The circuit components use new components with high reliability indicators, surface mount technology, and eliminate low reliability components such as potentiometers and connectors, significantly improving the overall reliability indicators of the machine.
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)

Boiler 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)