Flow meter manufacturer from China（Kaifeng AFT Instrument Co.,ltd)

The water plant extracts raw water from rivers, lakes or reservoirs and pays the country according to the raw water measurement results. The finished product of the water plant is tap water. The management and distribution of tap water requires a large number of large-diameter flowmeters. These measuring objects have the following characteristics. ①The measurement data belongs to trade settlement, and the measurement accuracy is high. The accuracy of ±2.5%R should be achieved in accordance with GB/T 17167. For large diameter meters, some users require up to ±0.5% R. ②The flow meter is arranged on the main pipe of the raw water and the tap water, and the caliber is large. To reduce the pumping cost, the resistance is required to be small. ③High requirements for measurement range. Household users are intermittently used, even for large enterprises and institutions, water consumption varies greatly between day and night, between different seasons, at different stages of production, opera...

 Modern communication technology is an emerging technology based on digital technology. It is introduced into the field of measurement and control, which greatly promotes the development of measurement and control technology.The use of digital communication to transmit information is significantly superior to the use of analog signals in the meter.        ①Accurate Data transmission by digital communication, supplemented by error detection technology, once successful, there is no error in analog signal transmission.        ②Saving communication cables In traditional meters, analog signals are used to transmit information, and a pair of lines can only transmit one signal. In modern communication technology, information is transmitted in a sub-method, and the amount of information that can be transmitted by a pair of lines can reach tens of thousands or even more, thereby greatly saving.        In the digital display instrum...

Product description:        The HBLD/G slurry type electromagnetic flowmeter is an electromagnetic flowmeter dedicated to measuring slurry media such as pulp, mud, slurry, and coal water slurry. The product adopts high frequency or double frequency excitation mode, which effectively improves the anti-slurry noise signal capability, has good stability and convenient operation, and the measured concentration can reach 5%-60%. Feature: 1. It can measure high concentration media. 2. High-frequency or dual-frequency excitation ensures the accuracy and sensitivity of the measurement. 3. It can realize multiple frequency combinations to adapt to different media environments. 4. The measuring tube has no obstruction flow and moving parts,and is particularly suitable for liquid-solid two-phase flow, such as: pulp, mud, slurry, coal water slurry measurement, the slurry concentration mass ratio can reach 40%, and the usual variation range is less than 5%. ...

The HBLD/R series electromagnetic heat meter is a meter that measures the heat released by the heat transfer fluid in the heat transfer system. It uses a high-precision, high-reliability electromagnetic flowmeter as a flow measurement, and uses a high-precision, high-stability platinum thermal resistance for temperature measurement, which makes the thermal energy meter have excellent measurement performance. It can be widely used in the calculation of heat, heating, air conditioning and other heat in residential residential quarters, office buildings and enterprises. Characteristics of electromagnetic heat meter： ①Measurement is not affected by the variation of flow density, viscosity, temperature,pressure and conductivity. High accuracy measurement is guaranteed according to the linear measurement principle. ②No obstacle in the pipe, no pressure-loss and lower requirement for straight pipeline. ③DN 6 to DN2000 covers a wide range of pipe size. A variety of liners and electrodes...

The vortex flowmeter is a volumetric flowmeter, that is, the fluid Reynolds number is within a certain range, and its output is only proportional to the volume flow.        The output of the vortex flowmeter has two kinds of frequency signals and analog signals, and the analog output is obtained by f/I conversion on the basis of the frequency output. This conversion is about 0.1% loss of accuracy. Therefore, when measuring steam flow, users prefer to use frequency output.        The frequency output vortex flowmeter is more popular with users such as the heating company. The other reasons are as follows: a.Frequency output vortex flowmeter price is slightly lower. b.Modification of full range of Frequency output Vortex Flowmeter is more convenient ,you only need to follow the prescribed method and perform simple operations on buttons on the programmable flow calculator panel. c.When you want to know the steam mass flow, if you use the frequen...

 Flow measurement objects in the petroleum and chemical industries Due to the diversity of the measured medium, the measurement range is also extremely demanding. From measuring the small flow rate of the additive and the small test device to the high flow rate of the raw gas flow. From the most common water，vapor, air, gas, etc,to all kinds of chemical products and semi-finished products, as well as residues, liquid ammonia and other difficult objects.       The petrochemical industry has strong financial strength and is an important market for high-end products with excellent quality and high price. In addition to some of the basic features described above, there are two distinct features below.       ①Most petroleum and chemical companies have explosion-proof requirements. Even if the fluid to be tested is not a flammable or explosive substance, the entire area is a flammable and explosive place. Therefore, the instrument should be in accordance wit...

   When it comes to the power industry, it is associated with large boilers and high-temperature and high-pressure steam in thermal power plants. It is thought that the large-diameter pipe network of thermal power plants supplies steam to various users. Therefore, the measurement of steam flow in the thermal power and thermoelectric industries is large.According to its use and characteristics, it can be roughly divided into flow measurement related to power generation and flow measurement in heating network.     （1）Steam measurement related to power generation This type of flow measurement is characterized by high fluid temperatures and high pressures. Even for small units of several megawatts, its steam temperature is as high as 420 °C.Although new flow meters are often introduced, most flow meters cannot withstand such harsh operating conditions.Currently, the throttling differential pressure flow meter is suitable for this environment.    （2）Steam flow m...

  If the steam flow measurement method is subdivided according to the working principle, it can be divided into two types: direct mass flowmeter and indirect mass flowmeter.   Most of the steam mass flow meters that are widely used today are still indirect.Among them, the steam mass flowmeter with the throttle differential pressure flowmeter and the vortex flowmeter as the core is the mainstream.These two methods have their own advantages and disadvantages, and have good complementarity.In the differential pressure flowmeter, the linear orifice plate has a certain market share due to its wide range and good stability.In addition, Coriolis mass flowmeter, uniform velocity flowmeter, ultrasonic flowmeter, etc. There are also applications in steam flow measurement. If you want to know more information about AFT , welcome to visit our website:www.aft-flowmeter.com

（1）Look up the consistency of density Saturated steam uses temperature compensation and pressure compensation, but is essentially the same. The reason is that the saturated steam has a single-valued function between the pressure and the temperature, and the density detected from the steam temperature is consistent with the density detected by the pressure corresponding to the temperature. Therefore, the use of temperature compensation and pressure compensation is feasible in principle. （2）Investment difference From the perspective of saving investment and reducing installation workload, because the price of a platinum thermal resistance is only a few tenths to a fraction of that of a pressure transmitter, temperature compensation is economical. （3）Compensation accuracy difference How much compensation accuracy can be obtained by temperature compensation and pressure compensation, which is related not only to the accuracy of the temperature sensor and the pressure transmitter, but a...