High dynamic measuring range 1:25
Converter with most modern digital filter technology for the safe
detection of also weakest sensor signals
Temperature sensor and pressure sensor are integrated for
compensation. With latest design, Vibration will not have effect to
the accuracy of the swirl flow meter.
Double swirl signal sensor. Main technical parameters and functions
1 Flowmeter specification, basis parameter and performance index
(refer to form 1) DN(mm) | Style | Flow range(m3/ h) | Working pressure(Mpa) | Accuracy | Repeatability | 15 | | 0.3-20 | 1.6 2.5 4.0 6.3 | 1.0 1.5 | Basis error less than absolute value limit 1/3 | 20 | | 0.5-25 | 25 | | 1.0～30 | 32 | | 2.0～60 | 40 | | 3.0～70 | 50 | A | 3.0～150 | B | 2.5～75 | 80 | A | 20～400 | B | 10～200 | 100 | A | 40～800 | B | 30～600 | 150 | A | 100～1800 | B | 40～900 | 200 | | 180～3600 | 1.62.54.0 |
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Note ：(1).Accuracy: As temperature 、pressure of the system accuracy;
(2). A、B use the same distinction between different flow range.
2 Standard condition ：P=101.325KPaT=293. 15K
3 Use condition ：
Setting temperature30℃～+65℃
Relative humidity：5％～95％
Medium temperature：－20℃～+80℃
Barometric：86KPa～106KPa
4 Electrical performance index
4.1 Working source：
A. Outside source: +24VDC±15％, ripple＜5％, apply to 4～20mA output,
pulse output, alarm output, RS-485;
B. Inside sourceGroup 3.6V lithium battery(ER26500), when the
voltage under 3.0V,there voltage instruction.
4.2 Power consumption:
A. Outside source2W;
B. Inside source: The average power consumption 1mW, can continuous
use for more than two years.
4.3 Pulse output:
A．Working condition pulse signal, and direct the flow sensor detect
condition pulse signal magnify output isolation Optocoupler, high
≥20V,low≤1V;High level, Low level
B．Calibration pulse signal, and IC card with valve control ,
extent≥2.8V,extent≤0.2V,pulse representative volume can set range:
0.001m3～100m3 .the value of single choice must pay attention to:
calibration pulse signal frequency for≤900Hz .
C. Calibration pulse pulse signal magnify output isolation
Optocoupler, high ≥20V,low≤1V.
4.4 RS-485 communication, (photoelectric insulation)and realize the
following function :
A．Adopts RS-485 interface, can directly with transmitter or
secondary form, transducer display the medium temperature, pressure
and temperature, and pressure compensate after the standard volume
flow and volume flow standard.
B．Assembled by RS-485 interface and LUXB-I data collector , can
compose telephone networks system, and one data collector can take
15 flowmeters
C. Assembled by RS-485 interface and LUXB-II data collector, can
compose broadband networks system, by INTERNET transmission data,
and one data collector can take |
