Product Details
vortex shedding flowmeters for cooling water flow measurement Pipe
size DN15-300
General introduction
The vortex shedding flow meter: when a fluid passes by an object or
obstruction, oscillations can occur. Examples of these oscillations
in nature include the whistling caused by wind blowing by the
branches of trees, the swirls produced downstream of a rock in a
rapidly flowing river, and the waving of a flag in the wind. Note
that in all of these examples, when the flow is slowed, the
oscillations stop. That is, the whistling stops when the wind dies
down, the water flows calmly around the rock when the river is not
flowing rapidly, and the flag does not wave in a mild breeze.
Features
- Less pressure loss, as less as 1 Kpa
- Accuracy 1%, and customizable to 0.5%
- Low flow rate measurable 1.5 m/s
- Temperature and pressure compensation
- GRW self lubricate bearing, or add lubrication oil
- Output: Pulse, 4-20 mA
- Diameter: 15, 25, 40, 50, 80, 100, 150, 200, 250, 300mm
- Backlit LCD display, compact or remote design
- Communication (optional): RS485
- Combined converter with top and bottom limit alarm, equivilent
output
Turbine blade option
Technical data
Diameter | Flow range | Temp. | Ambient Temp. | RH | Pressure | Pressure loss |
mm | +/- 1% | +/- 1.5% | +/- 2.5% | ℃ | ℃ | - | Mpa | KPa |
LWGQ15 | - | - | 1.5 ~ 7.5 | -20 ~ 60 | -20 ~ 50 | ≤95% | 6.4 | 1 |
LWGQ25 | - | - | 6 ~ 42 | 1 1.6 2.5 |
LWGQ40 | 8.4 ~84 | 8.4 ~160 | 6.5 ~200 |
LWGQ50 | 16.8 ~168 | 16.8 ~336 | 11 ~336 |
LWGQ80 | 34 ~340 | 34 ~680 | 34 ~1000 |
LWGQ100 | 51 ~510 | 51 ~1020 | 51 ~1850 |
LWGQ150 | 98 ~980 | 98 ~1960 | 130 ~3000 |
LWGQ200 | 170 ~1700 | 170 ~2550 | 140 ~4000 |
LWGQ250 | 200 ~2000 | 200 ~3450 | 200 ~6000 |
LWGQ300 | 400 ~4000 | 400 ~6000 | 250 ~7500 |
Model selection
Calculation logic of gas work flow and standard cubic flow
converting
Formula: pV=nRT
P-pressure, V-measurement, n-material weight, R-constant,
T-absolute temperature
Under ideal gas status, unit: pa (pressure), m3, mol,k, R=8.31
It’s actually to convert work flow into standard cubic flow at 20
C, 101.325kpa.
For example, work temp. T=32C, work pressure:P= 0.6 Mpa, work flow
Qw=100 m3/h, the standard flow Qs:
Qs=100 * (701325*273) / (101325*305)=619.5345 m3/h
Applications:
For air, natural gas, coal gas flow metering volumetric measurement
in petroleum, chemical processing, metallurgy. Combined with our
accumulator, it can measure the gas / air cubic flow or weight
flow.
Competitive advantage:
- well education background staff
- wide field application experience, include but not limit to: oil
field, petroleum, chemical process, environment protection, power
grid, metellurgy, machinery, textile, etc
- complete manufacturing qualifications in flow instrument
Lab equipment - Piston pressure regulator
Lab equipment - static flow calibrating line
Company Profile
Shanghai I Fluid Technology Co., Ltd, a technique based company. We
focus on the deployment , installation and management system of
smart metering and smart grid in all utility sectors, include but
not limited to water, heat, gas and electricity.
To adapt to the global environment protection trends, and China
government policy, China put the green energy application and EIA
at their first place. We do our best contribution to the government
energy saving policy.
We put emphasis on central air conditioning system, energy
distribution system in separated areas, green energy application in
commercial buildings, municipal water / gas / heat supply, sewage
discharge monitoring, and many other industrial applications.
Adhere to the principle of “ low carbon energy, build future”, we
aim to give solution to take the best avail of natural resources,
improve energy efficiency, reduce energy consumption. Through more
renewable energy, reasonable energy store technique, and minimize
energy demands, we help our clients to build an intelligent low
carbon energy network. Build the optimized electricity, heat, water
and gas supply and demands system, finally to realize the LOW to
ZERO energy system.
Over tens of years developing, we design and manufacture a complete
set of energy relating products: central air condition with
variable ventilation and ventilate at low temperature, flexible
central air conditioning, cooling store capacitor, AMR/AMI,
metering and level products.