3.6V lithium battery or DC24V gas turbine flow meter with 4-20mA /RS485 output
Working Principle
When the fluid flows into the flow meter, it is straightened and accelerated by the dedicated integrated flow straightener at the inlet. Due to the angle between the turbine blades and the fluid flow direction, the turbine generates a driving torque. After overcoming the friction torque and fluid resistance torque, the turbine begins to rotate. Within a certain flow range, the angular velocity of the turbine rotation is proportional to the volumetric flow rate of the fluid. According to the principle of electromagnetic induction, a magnetic sensor is used to detect pulse signals from a coaxially rotating signal wheel that are proportional to the fluid's volumetric flow rate. After amplification, filtering, and shaping, these signals, along with temperature and pressure sensor signals, enter the microprocessor unit of the intelligent flow totalizer for computation and processing, and the gas volumetric flow rate and total amount are directly displayed on the LCD screen.
Product Features
- High-quality aluminum alloy turbine, providing higher flow stability and corrosion resistance.
- Special instrument bearings with low friction, good sealing, and long service life.
- The measuring chamber is isolated from the vent chamber, ensuring the safety of the instrument.
- Capable of measuring the temperature, pressure, and flow of the gas; can perform automatic flow compensation and display the cumulative gas volume under standard conditions (Pb=101.325 KPa, Tb=293.15 K); temperature and pressure values can be queried in real time.
- The instrument has pulse signal and analog signal output, and data can be centrally collected and managed in real time through RS485 communication interface or directly via a GPRS system.
- Wide flow range (Qmax/Qmin ≥ 20:1), good repeatability, high accuracy (up to grade 1.0), low pressure loss, and low starting flow, reaching up to 0.6 m³/h.
- Intelligent instrument with multi-point nonlinear coefficient correction.
- Built-in pressure and temperature sensors, high safety performance, compact structure, and aesthetically pleasing appearance.
- The instrument has explosion-proof and protective functions, with explosion-proof marking ExdⅡBT4 and protection level IP65.
- Low power consumption system, can be powered by lithium batteries or an external power supply.
- Real-time data storage function, preventing loss of instrument coefficients and cumulative flow values during battery replacement or sudden power failure, and internal data can be permanently saved during a power outage.
Product detail
Technical Specifications
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Parameter Table 1 |
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|
Model |
Specifications |
Nominal Diameter (mm) |
Flow range (m³/h) |
Starting Flow Rate (m³/h) |
Pressure Resistance (MPa) |
Installation type |
|
ESMLWQ-25 |
DN25 |
25（1"） |
3-30 |
2 |
1.6 |
Flange |
|
ESMLWQ-32 |
DN32 |
32（1.25"） |
5-50 |
3 |
1.6 |
|
|
ESMLWQ-40 |
DN40 |
40 （1.5"） |
6-60 |
5 |
|
|
|
ESMLWQ-50 |
DN50 |
50 （2"） |
10-100 |
7 |
1.6 |
|
|
ESMLWQ-65 |
DN65 |
65 （2.5"） |
18-180 |
10 |
1.6 |
|
|
ESMLWQ-80 |
DN80 |
80 （3"） |
20-400 |
15 |
1.6 |
|
|
ESMLWQ-100 |
DN100 |
100 （4"） |
30-500 |
20 |
1.6 |
|
|
ESMLWQ-125 |
DN125 |
125 （5"） |
50-600 |
30 |
1.6 |
|
|
ESMLWQ-150 |
DN150 |
150（6"） |
90-1800 |
40 |
1.6 |
|
|
ESMLWQ-200 |
DN200 |
200（8"） |
150-2500 |
60 |
1.6 |
|
|
ESMLWQ-250 |
DN250 |
250 （10"） |
200-4300 |
100 |
1.6 |
|
|
ESMLWQ-300 |
DN300 |
300 （12"） |
300-6300 |
200 |
1.6 |
|
|
For pressures above 1.6MPa, please place an order in advance. |
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