RS485 vortex flowmeter 4-20mA vortex flowmeter

Meacon RS485 4-20mA vortex flowmeter is widely used in petroleum, chemical, city gas supply, electric power, metallurgy coal and other industries for various gas measurement.

Stable operation: No mechanical moving parts, corrosion-resistant, stable and reliable, long life, long-term operation without maintenance.
Multiple power supply options: The whole machine has low power consumption and can be powered by internal battery or external power supply.
Intelligent temperature and pressure integrated: Intelligent flowmeter integrates flow probe, microprocessor, pressure and temperature sensors, and adopts built-in combination to make the structure more compact.
Anti-interference: The use of dual detection technology can improve the detection signal degree and suppress the interference caused by pipeline vibration.

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Commonly used point-to-point signaling methods in industry are 4-20mA, 0-5V, as well as HART (based on the development of 4-20mA) and RS485, R232 digital communication methods.

RS485 4-20mA vortex flow meter is a velocity type flow meter with a wide range of applications it is suitable for liquid, steam and most gases flow metering, measurement and control. Meacon vortex flowmeter is a new type of flowmeter introduced by the company with reasonable design and powerful linear correction function to reach the world’s advanced level. The flowmeter adopts fine low-power consumption full dot-matrix LCD display clear and intuitive operation is simple.RS485 or HART communication can meet the needs of users, 12 compensation algorithms can meet almost all the flow compensation calculation relying on the external data correction curve and calibration based on standard signals led the trend of instrument calibration.

RS485 4-20mA vortex flow meter advantages and limitations

The RS485 4-20mA vortex flow meter has the following advantages:

1. Simple structure, small size, light weight, low manufacturing cost;
2. The pressure loss is particularly small and negligible for large-diameter measuring tubes;
3. The use of 16-bit computer chip, integration, small size, performance, the whole function;
4. Sensor output for the pulse frequency, its frequency and the actual flow of the measured fluid is linear, the zero point without drift, the performance is very stable structure of a variety of pipe-type, insertion type flow sensor form.
5. Higher accuracy, usually ± 1.0% for liquids and ± 1.5% for gases.

RS485 4-20mA vortex flowmeter selection points

Selection of insertion vortex flowmeter should first understand the site conditions.

1. Flow range, inside diameter of the measuring pipe, wall roughness, fluid operating temperature and pressure;
2. On-site piping conditions, such as meter installation location, meter upstream and downstream obstruction type, upstream and downstream straight section length, piping direction, meter installation method;
3. The condition of the measured medium, e.g. whether it is a dirty flow, pulsating flow;

RS485 4-20mA vortex flowmeter is a point flow rate type flowmeter, measurement accuracy and the pipeline cross-section of the flow rate distribution of the relationship is very close, so the upstream flow stopper and the length of the straight section of the impact on the measurement error than on the full-pipe flowmeter and the radial flow rate type vortex flowmeter has a greater impact on the meter in the installation of the meter, in particular, we must comply with the requirements of the instruction manual, to ensure that the instrument upstream and downstream of the meter have sufficient Straight pipe length.

RS485 4-20mA vortex flowmeter product classification

Clamp-on vortex flow meter: Small installation size, simple structure and low cost;
Sanitary vortex flow meters: Widely used in food, pharmaceutical industry liquid, steam measurement, but also can measure tiny particles, impurities of turbid liquid, and can be used as a flow transmitter for automatic control systems;
Flange type vortex flow meter: One-piece flange structure, simple installation, widely used in compressed air, saturated and superheated steam, natural gas and a variety of media flow measurement.