Advantages and disadvantages of orifice flowmeters – Schneider

Create Date: 2024-8-30 12:03:23|Source: Schneider/Schneider

孔板流量计是将规范孔板与多参量差压变送器(或差压变送、温度变送器及压力变送器)配套组成的高量程比差压流量设备,可丈量气体、蒸汽、液体及天然气的流量。广泛使用于石油、化工、冶金、电力、供热、供水等领域的过程控制和丈量。孔板流量计被广泛适用于煤炭、化工、交通、修建、轻纺、食物、医药、农业、环境保护及人民日常日子等国民经济各个领域,是开展工农业出产,节约能源,改进产品质量,进步经济效益和管理水平的重要东西在国民经济中占有重要的位置。在过程自动化仪表与设备中,流量仪表有两大功用:作为过程自动化控制系统的检测仪表和丈量物料数量的总量表。

                              Advantages and disadvantages of orifice flowmeters – Schneider

  优点:

  1、规范节流件是全用的,并得到了国际规范安排的认可,无需实流校准,即可投用,在流量传感器中也是**的;

  2、结构易于复制,简单、牢固、功能安稳可靠、价格低廉;

  3、使用规模广,包括全部单相流体(液、气、蒸汽)、部分混相流,一般出产过程的管径、工作状态(温度、压力)皆能够丈量;

  4、检测件和差压显现仪表可分隔不同厂家出产,便与专业化规划出产。

  缺点:

  1、丈量的重复性、**度在流量传感器中属于中等水平,由于众多要素的影响错综复杂,**度难于进步;

2. The scale is narrow, because the flow coefficient is related to the Reynolds number, the general scale is only 3:1-4:1;

  3、有较长的直管段长度要求,一般难于满意。尤其对较大管径,问题更加突出;

  4、压力丢失大;

5. The orifice plate is made with an acute angle line of the inner hole to ensure the accuracy, so the sensor is sensitive to corrosion, wear, scaling and dirt, and it is difficult to ensure the accuracy of long-term use, so it needs to be removed for forced inspection once a year;

  6、采用法兰衔接,易发生跑、冒、滴、漏问题,大大增加了保护工作量。

More on that
Features of Schneider explosion-proof inverter box Features of Schneider explosion-proof inverter box

1. Aluminum alloy shell or steel plate welding, surface spraying; 2. Built-in inverters, circuit breakers, signal lights and other components produced by domestic or Schneider and other companies; 3. It is mainly adjusted by changing its output frequency to adjust the speed of ordinary three-phase asynchronous motor, so as to reach the production process.

Schneider inverter motor control mode Schneider inverter motor control mode

Fundamentals of magnetic flux vector manipulation The control of a three-phase asynchronous motor is much more messy than that of a DC motor because the current, voltage, induced potential, magnetic flux, etc., of the stator and rotor are all alternating. However, the stator winding of the three-phase asynchronous motor is a symmetrical three-phase winding, which exerts a ...

Schneider miniature circuit breaker code calling Schneider miniature circuit breaker code calling

Schneider miniature circuit breaker code marking method For example: 1-C65N-C20A/2P+VE+30mA+SD, the meaning of each item is: 1--------- identification number C65 ------ serial code N -------- breaking ability, N is 6000A, H is 10000A, L is 15kA ...

The selection method of inverter power - Schneider The selection method of inverter power - Schneider

The system power is equal to the product of the inverter power and the motor power, as long as both are operating at a higher power, the system power is higher. From the power point of view, when selecting the power of the inverter, the following points should be noted: ...

Motor control mode of Schneider inverter Motor control mode of Schneider inverter

Fundamentals of magnetic flux vector manipulation The control of a three-phase asynchronous motor is much more complicated than that of a DC motor because the current, voltage, induced potential, magnetic flux, etc., of the stator and rotor are all alternating. However, the stator winding of the three-phase asynchronous motor is a symmetrical three-phase winding, which exerts a ...

Schneider UPS power supply installation steps Schneider UPS power supply installation steps

UPS power supply is widely used in shopping malls, supermarkets, banks and other enterprises and institutions, the primary effect of the power supply is to provide continuous power supply for the unit in the state of power failure, so as to ensure the normal operation of the computer network system and other application systems, and effectively avoid data loss. In the power supply ...

Schneider diode selection experience and substitution method Schneider diode selection experience and substitution method

1. Selection of detection diode Point-contact germanium diodes are generally used for detection diodes, such as 2AP series. When selecting, the detection diode with high operating frequency, small reverse current and large forward current should be selected according to the specific requirements of the circuit. Although the detection and rectification of ...

Introduction to Schneider PLC series Introduction to Schneider PLC series

1. LMC058 & LMC078 Modicon Motion Controller Product Information Faster machine planning The motion controller uses the same programming software as the PLC; Custom-made utility blocks for complex use; Dedicated motion function library for programming, debugging, and diagnosis ...

Introduction to Schneider inverter fault code and maintenance method Introduction to Schneider inverter fault code and maintenance method

1. If the fault code presented on the Schneider inverter is AnF, it means that the load of the inverter has slipped, that is, the speed of the encoder does not match the initial value. First of all, we need to check whether the parameters of the motor are stable and the size of the load, ...

Precautions for the selection of Schneider molded case circuit breaker Precautions for the selection of Schneider molded case circuit breaker

1. Shell current and rated current The size of the shell current is 100 (rated current 16 25 32 40 63 80 100) 250 (rated current 160 250 400 (rated current 250 400) 630 (rated current 630A.) ...

Precautions for the use and maintenance of instruments and meters - Schneider Precautions for the use and maintenance of instruments and meters - Schneider

Attention should be paid to the following matters during the use and maintenance of the appearance of the instrument: 1. Don't blindly knock and bump when overhauling, so as not to expand the problem, and the more you repair, the worse it will become. ​ 2. Do not plug and unplug various control boards and plugs with electricity. Due to the power-on ...

Schneider inverter external potentiometer connection Schneider inverter external potentiometer connection

The two wires are connected to the resistor, and the other wire is connected to the conditioning terminal. The red thread is attached to the blackhead and inserted in a small hole. Connect both ends of the IR potentiometer to +10V and ACM, and slide the termination to the voltage input terminal AVI. ...

Schneider instrumentation accuracy Schneider instrumentation accuracy

It refers to the degree to which the average value measured repeatedly under certain test conditions is consistent with the true value, which is indicated by error. It is used to indicate the magnitude of the error in the system. In practice, control tests are generally carried out with standardized substances or normative methods, and when there are no standardized substances or normative methods, it is often used to add ...

Schneider inverter series at a glance Schneider inverter series at a glance

1. ATV11 series The Schneider ATV11 series is primarily used in three-phase asynchronous motor inverters with a power range of 0.18 to 2.2 kW. 2. ATV12 series ATV12 Schneider inverter for power scale 0.18k...

The reason for the inverter trip - Schneider The reason for the inverter trip - Schneider

Whenever the inverter is down due to a problem, a problem code will appear. The most common causes are overcurrent, overvoltage, inverter temperature, etc. It's a good idea to find an explanatory book with specific questions to be asked about. 1. Overload jump ...

Selection and control of the inverter installation - Schneider Selection and control of the inverter installation - Schneider

Frequency converters are widely used equipment in modern industry. If you want to complete the functions of soft stop, soft start, stepless speed regulation or special requirements for speed rise and fall, you need the more advanced speed control equipment in modern asynchronous motors - frequency converters. The main circuit of the equipment is selected to communicate - DC - communication ...

The difference between an inverter and a servo drive – Schneider The difference between an inverter and a servo drive – Schneider

In terms of frequency converters: The abbreviated inverter can only regulate the speed of the communication motor, and the open-loop or closed-loop can be determined depending on the control method and the inverter, which is the traditional V/F control method. Now many of the frequency conversion has been set up by mathematical models, which will communicate electricity ...

Schneider miniature circuit breaker problem analysis and answer Schneider miniature circuit breaker problem analysis and answer

Fault 1: The shell of Schneider MCB product is yellowed or burned. Reason 1: It is very likely that the magnetic coil inside the circuit breaker is burned out because of harmonics or high-frequency signals. Method 1: * The good thing is that the filtering can be satisfied with the use of 50Hz/60Hz power frequency. ...

Schneider inverter disturbance and treatment method Schneider inverter disturbance and treatment method

A. Methods of Communication: (1) Radiation disturbance (2) Conduction disturbance B. Immunity Methods With regard to nuisance signals transmitted by radiation methods, they are primarily weakened by wiring and shielding the radioactive source and the disturbed lines. About Tong ...

Technical causes of Schneider low-voltage circuit breaker accidents Technical causes of Schneider low-voltage circuit breaker accidents

(1) Operational failure Operation failure is manifested by the dragging or misoperation of the circuit breaker. Because the fundamental and important function of the high-voltage circuit breaker is to act correctly and quickly remove the fault of the power grid. If the circuit breaker is dragged or misoperated, it will pose a serious threat to the power grid, first of all: (1) expansion ...

CATEGORIES BYPASS
Customer Service Center

Online Consultation:QQ


ContactContact

Contact: Manager Huang

Contact QQ: 3271883383

Contact number: 13522565663


Scan the code to add WeChat (please save the picture first on the mobile phone)

working hoursworking hours

Weekdays: 9:00-17:00

Holidays: Only emergencies are handled

Contact us

Contact us

Contact number QQ consultation
QQ consultation

3271883383

Company address
Back to top