The VS200 series thermal anemometer/sensor transmitter is a new type of instrument used for measuring and controlling gas wind speed and volume; Suitable for dry non flammable and explosive gases, it can be used for gas monitoring in industrial sectors such as petroleum, chemical, steel metallurgy, power, light industry, medicine, and environmental protection. It is particularly suitable for monitoring air, compressed air after drying, nitrogen, argon, helium, flue gas, various types of exhaust gases, dust containing gases, etc; Can replace orifice plates, Venturi tubes, Annubar, vortex street and other flow velocity and flow meters; Its characteristics are high reliability, good repeatability, low pressure loss, no movable parts, wide range ratio, fast response speed, high measurement accuracy, and no need for temperature and pressure compensation; It has significant advantages in measuring large pipe diameters, low flow rates, large flow range variations, and extremely small flow rates;

The structure of this anemometer is flexible and diverse, with two types: plug-in and pipeline, which are very suitable for different users to choose from. Especially the plug-in structure makes the measurement of air volume (velocity) with large pipe diameter and low pressure simple and easy, such as in smoke ducts and chimneys.

Parameter introduction:

Performance technical parameters
Structural form: Insertion type pipeline type
Measure various dry non flammable and explosive gases in the medium
Pipe diameter range DN80~4000mm (can be customized for smaller pipe diameters) DN15~2000mm
Flow rate range 0.1~120 Nm/s
Accuracy ± 1-2.5%
Working temperature sensor: -40~+450 ℃ Converter: -20~+45 ℃
Working pressure medium pressure ≤ 1.6MPa medium pressure ≤ 4.0MPa
Power supply DC 24V or AC220V ≤ 18W
Response speed of 1 second
Output signal 4-20mA (photoelectric isolation, maximum load 500 Ω, adjustable wind speed or volume output on site), pulse, RS-485 (photoelectric isolation), HART protocol
Alarm 2-channel relay normally open contacts, 10A/220V/AC,/30V/DC
Supply type: Split structure, integrated structure
Pipeline materials include carbon steel, stainless steel, plastic, etc
On site display of four line Chinese characters on LCD screen
Display content including standard wind speed, instantaneous volume air volume under standard conditions, instantaneous mass air volume, cumulative air volume, standard time, cumulative operating time, etc
Protection level IP65
Sensor material: stainless steel, carbon steel

Technical advantages:

The measurement of gas air volume does not require temperature and pressure compensation, making the measurement convenient and accurate. The mass air volume or standard volume air volume of the gas can be obtained.

With a wide range ratio of 2, it can measure gases with wind speeds ranging from 100 Nm/s to 0.1 Nm/s, and can be used for gas leak detection.

3. Good seismic performance and long service life: The sensor has no moving parts or pressure sensing components, and is not affected by vibration on measurement accuracy.

4. Easy installation and maintenance: When on-site conditions permit, non-stop installation and maintenance can be achieved.

5. Digital design: Overall digital circuit measurement, accurate measurement, and easy maintenance.

Using RS-485 communication or HART communication, factory automation and integration can be achieved.

Selection chart:

explain:
When selecting, the temperature range is -40 to+200 ℃, which specifically refers to the normal operating temperature of the sensor being below 150 ℃ and able to withstand up to 200 degrees in an instant;
When selecting, the temperature range is -40 to+450 ℃. Specifically, it refers to the normal operating temperature of the sensor being below 300 ℃, and it can withstand up to 450 degrees in an instant;