Temperature and pressure compensated vortex flowmeter-Vortex flow meter-Tianchang Martin Trading Co., Ltd.(天长市马丁商贸有限公司)

Overview of temperature compensated vortex flowmeter products

The temperature and pressure compensated vortex flowmeter is a new type of flowmeter developed by using the principle of liquid vibration. It is widely used in the measurement of fluid in petroleum, chemical industry, metallurgy, papermaking and other industries. The flowmeter has no movable parts, high reliability, high precision and long service life. It can measure the instantaneous and cumulative flow of liquid accurately in a wide flow range. It is not affected by the temperature, pressure, viscosity and composition of the medium, and it is not blocked, not stuck, not easy to scale, high temperature and high pressure, safe and explosion-proof. It is suitable for harsh environment. The flow score integral display and remote transmission display, and can output pulse signal or current signal to connect with PLC control system.

Two, the main characteristics of the temperature compensated vortex flowmeter.

1, the structure is simple and strong, no movable parts, high reliability, long term operation is very reliable.

2, installation is simple, maintenance is very convenient.

3, the sensor does not directly contact with the tested medium, its performance is stable and its life is long.

4, the output is proportional to the flow of the pulse signal, zero zero drift, high accuracy.

5. The measuring range is wide, and the measuring range can reach 1:10.

6, the pressure loss is small, the operation cost is low, and it has more energy saving significance.

7. In a certain Reynolds number range, the frequency of the output signal is not affected by the physical properties and composition of the fluid. The coefficient of the meter is only related to the shape and size of the vortex generator. There is no need to compensate the volume volume when measuring the volume of fluid.

8, a wide range of applications, steam (saturated steam), gas (air, oxygen, nitrogen, gas, gas, hydrogen, liquefied petroleum gas, hydrogen peroxide, flue gas, methane, butane, chlorine, gas, biogas, carbon dioxide, nitrogen, acetylene, light gas, oxygen, compressed air, argon, toluene, benzene, xylene, hydrogen sulfide, sulfur dioxide, ammonia. Gas, steam, liquid and water), liquid (water, high temperature water, oil, food liquid, chemical fluid, etc.) and liquid, and the flow rate of gas can be measured.

Three, temperature and pressure compensated vortex flowmeter flow range table

Table 1, liquid and gas (unit: m) Three /h)

Path (DN)	Liquid flow range (M Three /h)	Output frequency range (Hz)	Gas flow range (M Three /h)	Output frequency range (Hz)
Fifteen	1.2 to 6.2	90~900	5~25	265~2640
Twenty	1.5 to 10	40~396	8~50	218~1982
Twenty-five	1.6 to 16	32~325	10~70	172~1420
Thirty-two	2~20	20~250	15~150	130~1350
Forty	2.5 to 25	13~130	22~220	115~1147
Fifty	3.5 to 35	9~93	36~320	96~854
Sixty-five	6~60	8~82	50~480	61~583
Eighty	10~100	6~65	70~640	45~417
One hundred	15~150	5~50	130~1100	43~367
One hundred and twenty-five	25~250	5~47	200~1700	33~290
One hundred and fifty	40~400	4~40	280~2240	27~221
Two hundred	80~800	3~33	580~4960	24~207
Two hundred and fifty	140~1400	3~26	970~8000	20~171
Three hundred	200~2000	2~22	1380~11000	17~136

Four, temperature and pressure compensation vortex flowmeter size chart

Path

(DN)

(mm)

Ten

Sixty-six

Three hundred and sixty

Fifteen

Sixty-six

Three hundred and sixty

Twenty

Sixty-six

Three hundred and sixty

Twenty-five

Sixty-six

Three hundred and sixty

Thirty-two

Sixty-six

Three hundred and sixty-five

Forty

Eighty

Three hundred and seventy

Fifty

Eighty

Three hundred and seventy-five

Sixty-five

Ninety-three

Three hundred and eighty-three

Eighty

One hundred

Three hundred and ninety

One hundred

One hundred and twenty-five

Four hundred

One hundred and twenty-five

One hundred and forty-five

Four hundred and seventy

One hundred and fifty

One hundred and sixty-five

Five hundred

Two hundred

One hundred and ninety-six

Five hundred and eighty

Two hundred and fifty

Two hundred and thirty-five

Six hundred and fifty

Three hundred

Two hundred and fifty-five

Seven hundred

Five, installation sketch map

Matters needing attention

Legend

1. installation of expansion pipe

For small diameter and large flow, it is necessary to expand the pipe and ensure that the front straight section of the flowmeter is more than 15D, and the straight pipe section is more than 5D.

2. installation of shrinkage tube

For large diameter and small flow, it is necessary to install the shrink tube while ensuring that the front straight section of the flowmeter is more than 15D, and the straight pipe section is more than 5D.

3. installation of elbow pipe

If the front end of the flowmeter has a 90 degree elbow or a T type joint, ensure that the straight straight section of the flowmeter is equal to or equal to 15D, and the straight pipe section is equal to or equal to 5D.

4. installation of two bends on the same plane.

If the front end of the flowmeter has two 90 degree elbows, ensure that the front straight section of the flowmeter is more than 20D, and the straight pipe section is more than 5D.

5. installation of two curved pipes in different planes

If the front end of the flowmeter has two 90 degree elbows, ensure that the front straight section of the flowmeter is more than 25D, and the straight pipe section is more than 5D.

6. installation of regulating valve

If the regulator is needed before and after the flowmeter, ensure that the front straight section of the flowmeter is more than 25D, and the straight pipe section is more than 5D.

L six, product selection

ZM-LUGB

Vortex Flowmeter

caliber

(mm)

Ten

DN10~DN50 (flange type, clamp type, threaded type, pair clip type)

Fifty

DN50~DN150 (pair clamp, flange type)

One hundred

DN100~DN300 (flange type, pair clip type)

Three hundred

DN300 above is inserted.

Installation mode

Pair clamp

Flange connection type

Insertion type

Compensation mode

nothing

No compensation

Temperature and pressure compensation

Single temperature compensation

Single pressure compensation

Measuring medium

liquid

Gas

steam

temperature range

Normal temperature (below 120 C)

High temperature type (below 250 C)

Pressure grade

Atmospheric pressure to 1.6MPa

2.5MPa

4.0MPa

Material of Ontology

carbon steel

304 stainless steel

316 stainless steel

Power supply mode

Two wire DC24V 4 to 20mA

Two wire DC24V 4 to 20mA+HART protocol

Battery powered

Additional options

RS485 MODBUS protocol

Pulse output

Explosion protection (ExII CT6)

Seven, temperature and pressure compensation vortex flowmeter technical indicators

1, measuring medium: liquid, gas, saturated steam, superheated steam.

2, accuracy grade: liquid + 1%, gas (steam) + 1.5%, insert + 2.5%.

3, work pressure: 1.6MPa, 2.5MPa, 4.0MPa, 6.4MPa.

4, medium temperature: ordinary -40 ~ 150 C medium temperature -40 ~ 250 C high temperature -40 ~ 350 C.

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

6, working environment: -35 C to +60 C, humidity less than 95%RH.

7, work power supply: DC12V; DC24V.

8. Shell materials: carbon steel and stainless steel.

9. Explosion proof type: intrinsically safe ExibIICT6.
Eight. Installation technology of temperature compensated vortex flowmeter.

1. The upstream and downstream piping should be concentric with the inner diameter of the flow meter, and the difference between them should be less than 0.05D.

2. The gasket between the instrument and flange can not be inserted into the tube when installed, and its inner diameter should be larger than the inside diameter of the watch body 1-2mm

3, installation of pressure holes and temperature holes. When the temperature and pressure transmitter need to be installed in the tested pipeline, the pressure hole should be set at the downstream 3-5D, and the temperature Kong Ying is set at the downstream 6-8D.

4. Meters can be installed horizontally, vertically or horizontally on pipes.

5. When measuring gas, installation of meters in vertical pipes is not limited to gas flow. However, if there is a small amount of liquid in the pipeline, the air flow should flow from bottom to top in order to prevent liquid from entering the instrument measuring tube.

PRODUCTS

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Temperature and pressure compensated vortex flowmeter