Card-mounted vortex flowmeter parameters

Project Overview

Flange connection vortex flowmeter is suitable for: various low-viscosity liquids, gases, and steam in petroleum, chemical industry, metallurgy, machinery, food, papermaking, medicine, and urban pipeline heating, water supply, gas and other industries. Process measurement and energy-saving management of single-phase fluids.

A vortex flowmeter that meets the requirements of flow measurement in various industries.

The vortex flowmeter is based on the Karman vortex principle to measure the volume flow of gas, steam or liquid, the volume flow or mass flow of standard conditions. volumetric flowmeter. The instrument adopts advanced differential technology, combined with isolation, shielding, filtering and other measures, to overcome the problems of poor shock resistance and small signal data disorder of similar products. It also adopts advanced sensor packaging technology and protective measures to ensure the reliability of the product.

Product advantages/PRODUCT ADVANTAGES

1. Simple and solid structure, no moving parts, high reliability, and very reliable long-term operation;

2. Installation Simple and very convenient to maintain;

3. The detection sensor does not directly contact the measured medium, has stable performance and long life;

4. The output is a pulse signal proportional to the flow rate, no Zero point drift, high precision;

5. Wide measurement range, range ratio up to 1:10;

6. Small pressure loss, low operating costs, more energy-saving significance;

7. Within a certain Reynolds number range, the output signal frequency is not affected by changes in the physical properties and components of the fluid. The instrument coefficient is only related to the shape and size of the vortex generator. When measuring the fluid volume flow No compensation is required, and there is generally no need to recalibrate the instrument coefficient after replacing accessories;

8. Wide application range, steam (saturated steam), gas (air, oxygen, nitrogen, coal gas, natural gas, gas, hydrogen, Hydrogen peroxide, flue gas, methane, butane, gas, biogas, carbon dioxide, nitrogen, acetylene, oxygen, compressed air, argon, benzene sulfur dioxide, ammonia), steam, liquid and water, etc.), liquid (water, The flow rate of high-temperature water, oil, food liquid, chemical liquid, etc.), liquid, and gas can be measured.

Measurement medium liquid, gas, saturated steam, superheated steam

Accuracy level liquid ±1.0%, gas (steam) ±1.5%, plug-in ±2.5%

Working pressure 1.6MPa, 2.5MPa, 4.0MPa, 6.4MPa

Medium temperature ordinary type-40～150℃ Medium temperature type-40～250℃ High temperature type-40～350℃

Output signal three-wire voltage pulse, low level 0~1V, high level > 4V, duty cycle 50%; two-wire standard current 4~20mA; three-wire standard current 0~10mA

Work Environment -35℃～+60℃, humidity ≤95%RH

Working power supply DC12V; DC24V

Shell material carbon steel, stainless steel

Explosion-proof type intrinsically safe ExibIICT6

How to select products?

1. Measuring medium: vortex street The flow meter is a velocity flow meter. Its principle determines the type of measurement medium, which can be liquid, gas or steam. At present, most industrial situations, such as nitrogen, compressed air, steam, thermal oil, etc., are mostly measured by flange-connected vortex flowmeters;

2. Pipe diameter: flange connection According to the different installation methods, the vortex flowmeter can be installed in pipeline type or plug-in type. For the pipe type, the pipe diameter is the same as that of most other flow meters. The small one is DN15, and the larger one can reach DN300. If you need a larger caliber, you can choose plug-in installation. The conventional caliber range can reach DN2000. Calibers above DN2000 are supplied according to the agreement;

3. Measurement accuracy: flange connection type vortex flow The accuracy of the meter also has several levels, and they are divided according to the measurement medium. If the pipe-type vortex flowmeter is measuring liquid, the measurement accuracy can reach level 1.0, and if it is measuring gas, the accuracy can reach level 1.5. If it is a plug-in vortex flowmeter, the accuracy can reach level 1.5 and level 2.5;

4. Medium temperature: Generally speaking, it is divided into three ranges, including normal temperature, medium temperature and high temperature. The temperature ranges are -40~100℃ (normal temperature), 100~250℃ (medium temperature), and 100~320℃ (high temperature). If the temperature of the on-site medium is higher, such as some superheated steam, it can be measured with an orifice flowmeter;

5. Nominal pressure: It is mainly divided according to the installation method. The main needs in the market are as follows: , such as flange mounting type (2.5MPa), flange connection type (1.0/1.6/2.5MPa), plug-in installation type (1.6MPa/2.5MPa/4.0MPa);

6. Power supply Power supply: According to the current market demand, there are mainly +12VDC (three-wire pulse output), +24VDC (three-wire pulse output type and two-wire current output type) 3.6V lithium battery, dual power supply;

7 . Output signal: According to the current market demand, there are mainly voltage frequency pulse output, two-wire 4-20mA output and HART output. In addition, some occasions may require digital output, and we can also provide RS485 communication via modbus.