GFM83 Series Split Remote Transmission Vortex Flow Meter

GFM83 Series Split Remote Transmission Vortex Flow Meter

Overview

The GFM83 intelligent split type remote transmission vortex flowmeter is a stress type vortex flowmeter that measures flow based on the Karman vortex principle. It has a high signal-to-noise ratio, high sensitivity, and strong vibration resistance. The signal circuit uses microcontroller technology for data processing, encapsulating the CPU unit, storage unit, display unit, communication unit, and other functional modules in an amplifier circuit. It has RS485 communication function, very stable zero point and accuracy, and a diameter ranging from DN25 to DN300 (flange type or clamp type, plug-in type for larger than DN300). It is widely used to measure the volume flow rate and mass of superheated steam, saturated steam, compressed air, and general gases and liquids.

application

Steam, gas, and liquid can all be measured;

Low pressure loss;

No compensation is required when measuring volumetric flow rate;

Within a certain Reynolds number range, the flow characteristics are not affected by fluid pressure, temperature, viscosity, density, or composition, but only by the shape and size of the vortex generator;

Simple and sturdy structure, no movable parts, high reliability;

Easy to install, convenient to use and maintain;

The detection element does not come into contact with the medium, with stable performance and long lifespan;

Output pulse signals proportional to the flow rate, with no zero drift, high accuracy, and convenient networking with computers;

Wide measurement range, with a range ratio of up to 1:10 (1:20)

feature

1. By using advanced CNC equipment to process the sensor body and vortex generator, the machining accuracy is ensured, thereby making the components (especially the vortex generator) highly versatile and truly ensuring that the repeatability and accuracy of the sensor are not affected by component replacement; Capable of generating strong and stable vortex signals;

2. The radiator structure adopts a horizontal structure, which transfers less heat to the amplification part than flow meters that use a vertical radiator structure. Moreover, it has a larger heat dissipation area, faster heat dissipation, and higher reliability and longer lifespan of the sensor;

3. Through extensive waveform and frequency analysis of the vortex flowmeter over a long period of time, the optimal probe shape, wall thickness, height, probe rod diameter, and matching piezoelectric crystal were designed. Advanced CNC lathes were used for processing to ensure accuracy in coaxiality and cleanliness, and special processing techniques were employed to overcome the common problem of the inherent self oscillation frequency of the vortex flowmeter affecting the signal.

Technical Characteristics

1. Measuring fluids: saturated steam, superheated steam, compressed air and other general gases and liquids;

2. Accuracy: Level 1.0 for liquids and Level 1.5 for gases;

3. Repeatability: 0.33% for liquid and 0.5% for gas;

4. Measurement range: Gas 7m/s to 40m/s; Liquid: 0.7m/s to 7m/s;

5、 额定压力： 1.6MPa、2.5MPa、4.0MPa；

6. Fluid temperature: -40 ℃~250 ℃ (ordinary type), 100 ℃~350 ℃ (high temperature type);

7. Body material: 304 stainless steel;

8. Working power supply: 24VDC (or 12VDC), lithium battery;

9. Output signal: pulse signal (low level ≤ 1V, high level ≥ 4V); 4mA～20mA， Or RS485;

10. Protection level: IP65;

11. Electrical interface: M20 × 1.5;

12. Explosion proof type: ordinary non explosion proof type, explosion-proof type (optional);

13. Environmental temperature: -35 ℃~60 ℃ (without LCD); -5 ℃~60 ℃ (with LCD)

14. Relative humidity: 5-95%