Correct selection of DK800 glass rotor flowmeter

Overview

KD800 glass rotor flowmeter is a process detection instrument for measuring the flow rate of single-phase non pulsating fluid (liquid or gas) in a closed pipeline.

Changzhou Shuangfa Thermal Instrument Factory has a complete range of specifications and varieties, with advanced manufacturing technology and stable and reliable quality. The KD800 alarm series glass rotor flowmeter is widely used in chemical, petroleum, light industry, pharmaceutical, fertilizer, chemical fiber, food, dye, papermaking, national defense, scientific research and other units. It can also customize special flow rates and materials for customers' matching manufacturing.

The glass rotor flowmeter introduced with professional technology and equipment manufacturing has the advantages of high measurement accuracy, good interchangeability, wide measurement range, multiple connection methods, and easy installation and maintenance compared with similar domestic products. In addition, it can provide users with flow scales for different fluids, different states, and different viscosities according to physical quantities such as temperature, pressure, density, and viscosity of different fluids, solving the problem of correcting measurement display values and facilitating user use.

working principle

The KD800 alarm series glass rotor flowmeter is a variable area flowmeter, mainly composed of a vertically expanding glass cone tube from bottom to top and a float that can move up and down with the flow rate (see Figure 1). When the fluid flows through the glass cone tube from bottom to top, the lift S and buoyancy A generated by the fluid on the float cause the float to rise. Due to the increased annular flow area between the float and the inner wall of the cone tube, the lift generated by the fluid kinetic energy on the float decreases accordingly. When the sum of lift S and buoyancy S is equal to the weight G of the float itself, the float is in equilibrium and stable at a certain height, which represents the flow rate of the fluid through the flowmeter. Because there is a certain proportional relationship between the flow rate through the flowmeter and the rising height of the float, that is, with the flow area of the flowmeter, the height position of the float can be used as two degrees of flow rate.

KD800 glass rotor flowmeter

The KD800 alarm series glass rotor flowmeter has different installation methods according to its purpose and structural characteristics, including ordinary type, corrosion-resistant type, panel type, etc. It is suitable for measuring small flow rates. The KD800 series glass rotor flowmeter can easily replace the glass cone tube and float without removing them from the pipeline. Among them, the KD800-2 model can measure extremely low flow rates, with the smallest measurement range reaching 0.002L/h for water and 0.1L/h for air

Technical Specifications Table

(1) Measurement range

Water (20 ℃) 0.002~160L/h

Air (1.2X10? Pa, 20 ℃) 0.1-4300L/h

(5) Float shape: spherical, conical

(6) Allow the condition of the fluid being tested

Maximum pressure: 1.0Mpa, 1.6Mpa

Medium temperature: -5 ℃~+120 ℃

Environmental temperature: -20 ℃~+100 ℃

-20℃~+165℃

(2) Range: 1:10

(7) Total length: 145mm

(3) Accuracy level: Level 2.5, Level 4

(8) Connection methods: hose, metal tube, quick connector, card sleeve

(4) Cone tube: light tube, ribbed tube

Length: 100mm

Scale Flow Scale

(9) Weight: 0.4Kg

Model specification table

Diameter (mm)

model

Measurement range (L/h)

Water (20 ℃)

air

（1.2X10?pa,20℃）

2

KD800-2

KD800-2F

0.002~0.02

0.004~0.04

0.1~1.3

0.5~2.7

4

KD800-4

KD800-4F

0.25~2.5

0.5~5

0.8~8

1.6~16

4~40

6~60

6

KD800-6

KD800-6F

0.5~5

1.2~12

2.5~25

4~40

6~60

10~100

16~160

100~1000 180~1800

25~250 240~2400

50~500 240~2400

80~800 350~3500

100~1000 430~4300

Contact measurement of fluid component materials

model

Component materials

float

base

Stop stop

Sealing rings and gaskets

needle valve

KD800-( )

Agate or 316L stainless steel

HPb59-1 brass

nylon

Nitrile rubber

304 stainless steel

KD800-( ) F

304 stainless steel

fluoroplastic

Fluororubber or solvent resistant rubber

Note: Special materials 316 or 316L can be customized

Outline and installation dimension diagram

model

KD800-2

KD800-2F

KD800-4，6

KD800-4F,6F

D(mm)

φ9

φ11.5

E(mm)

M8X1

M10X1

Outer diameter of metal tube (mm)

φ5

φ6

Note: If the customer requires panel installation, special material requirements, etc., please specify them in the purchase contract. If not specified, basic models will be provided

Changzhou Shuangfa Thermal Instrument Factory is a professional manufacturer and seller of temperature instruments and various flow instruments. The main products include glass rod thermometers, second-class standard mercury thermometers, metal sheathed thermometers, glass internal standard thermometers, glass mercury precision thermometers, bimetallic thermometers DTM series digital thermometers, fish tank thermometers, aquarium thermometers, seawater specific gravity meters, specific gravity meters, thermometers, hygrometers, cardboard thermometers, plastic plate thermometers, thermometer cores, indoor thermometers, cigarette pack thermometers, electric contact thermometers (conductive meters), oven thermometers, bamboo thermometers, pressure thermometers, pressure gauges, glass rotor flow meters, stainless steel glass rotor flow meters, organic glass flow meters, metal tube rotor flow meters, electromagnetic flow meters, orifice flow meters, magnetic flap level meters, plastic tube rotor flow meters, YWZ series hydraulic press level meters, various pressure transmitters, hydraulic press temperature level meters, intelligent digital displays, thermal resistors and thermocouples, NFP-KC series thyristor triggers for thermal power plants, and more than ten thousand varieties.