Namur glass rotor flowmeter

DK800Glass rotor flowmeter

Overview

Namur glass rotor flowmeterThe NAMUR standard was originally used in the proximity switch industry, and its working principle is that the sensor needs to provide a DC voltage of about 8V. According to the distance of the metal object approaching the sensor, a current signal of 1.2mA to 2.1mA will be generated. The typical value of the calibrated switch current is 1.55mA. When the current changes from low to high or equal to 1.75mA, an output signal change will be generated (from 0 to 1, or from OFF to ON). When the current changes from high to low or lower than 1.55mA, an output signal change will be generated (from 1 to 0, or from ON to OFF)

Namur glass rotor flowmeterDK800 glass rotor flowmeterIt is a process detection instrument for measuring the flow rate of single-phase non pulsating fluid (liquid or gas) in a closed pipeline. The products introduced by the manufacturer are divided into two categories: domestically produced and imported, with complete specifications and varieties, advanced manufacturing technology, stable and reliable quality. They are widely used in chemical, petroleum, light industry, medicine, fertilizer, chemical fiber, food, dye, papermaking, national defense, scientific research and other units. They can also customize special flow and material manufacturing for customers.

The glass rotor flowmeter manufacturer introduces professional technology and equipment manufacturing. Compared with similar domestic products, the glass rotor flowmeter has the advantages of high measurement accuracy, good interchangeability, wide measurement range, multiple connection methods, and easy installation and maintenance. In addition, it can also provide users with flow scales for different fluids, different states, and different viscosities according to the 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

Namur glass rotor flowmeterThe DK800 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.

Manufacturer - DK800 alarm series glass rotor flowmeter introduces professional technology and equipment manufacturing. According to its purpose and structural characteristics, it can be installed in various types such as ordinary, corrosion-resistant, and panel type, suitable for measuring small flow rates. The DK800 series glass rotor flowmeter can easily replace the glass cone tube and float without removing them from the pipeline. The DK800-2 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

Note: The calculation of the accuracy level of the imported flowmeter complies with the * standard VDI/VDE3513. Error is taken as 1/4 reference error+3/4 relative error.

Model specification table

Contact measurement of fluid component materials

Note: Special materials 316 or 316L can be customized

Outline and installation dimension diagram

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

Namur glass rotor flowmeterChangzhou Shuangcheng 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 protective case 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, and temperature metersLOGOThere are tens of thousands of varieties including 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 gauges, plastic tube rotor flow meters, YWZ series hydraulic press level gauges, various pressure transmitters, hydraulic press temperature level gauges, intelligent digital displays, thermal resistors and thermocouples, NFP-KC series controllable silicon triggers for thermal power plants, etc.