Thermal gas mass flow meter is designed on the basis of thermal dispersion, and adopts method of
constant differential temperature to measuring gas flow. It has advantages of small size, easy installation,
high reliability and high accuracy, etc.
The meter contains two platinum resistance temperature sensors. The thermal principle operates by
monitoring the cooling effect of a gas stream as it passes over a heated sensor. Gas flowing through the
sensing section passes over two sensors one of which is used conventionally as a temperature sensor,
whilst the other is used as a heater. The temperature sensor monitors the actual process values whilst
the heater is maintained at a constant differential temperature above this by varying the power consumed
by the sensor. The greater the gas velocity, the greater the cooling effect and power required to maintain
the differential temperature. The measured heater power is therefore a measure of the gas mass flow
rate.
The format of gas velocity and power is shown as below:
��(1)
Where: is specific gravity of medium
V is velocity
K is balance coefficient
Q is heater power
Î? T is differential temperature
The medium temperature range of meter is -40ï½?220.
In the format (1), the specific gravity of medium is related to the density:
��(2)
Where: is the medium density in working conditionkg/m3
�n is the medium density in standard condition, 101.325kPa and 20 kg/m3
P is the pressure in working conditionkPa
T is the temperature in working condition
In the formats (1) and (2), there is a certain functional relationship between the velocity and pressure in
working condition, medium density, the temperature in working condition.
Due to the sensor temperature is always 30 higher than the medium temperature (environment
temperature), and the meter adopts method of constant differential temperature, therefore the meter do
not need to do temperature and pressure compensation in principle
Electromagnetic flowmeter is composed of sensor and converter. It has two forms: compact-type and remote-type. The remote-type also needs a special double-layer shielded cable to connect the converter and the sensor. There are seven kinds of electrode materials and four kinds of lining materials available for sensor.
Sanitary tri-clamp turbine flow meter Installation Instruction
Features
Measurement 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.
No obstacle in the pipe, no pressure-loss and lower requirement for straight pipeline.
DN 6 to DN2000 covers a wide range of pipe size. A variety of liners and electrodes are available to satisfy different flow characteristic.
Programmable low frequency square wave field excitation, improving measurement stability and reducing power consumption.
Implementing 16 bits MCU, providing high integration and accuracy; Full-digital processing, high noise resistance and reliable measurement; Flow measurement range up to 1500:1.
High definition LCD display with backlight.
RS485 or RS232 interface supports digital communication.
Intelligent empty pipe detection and electrodes resistance measurement diagnosing empty pipe and electrodes contamination accurately.
SMD component and surface mount technology (SMT) are implemented to improve the reliability.
The metal tube ratometer flowmeter is a kind of variable area flow quantity measuring instrument. It has such features as small volume, large detection range and convenient operation. It is especially suitable to measure flow quantity of media with small flow velocity and small flow quantity.
Intelligentized metal tube rotameters have field indication type and intelligentized remote transmission type. So it provides the customers with very wide selection spaces. In addition, advanced 16 bits micro processor and high quality industrialized components are adopted in the instrument, which ensures excellent performances of the flowmeter in various kinds of application situations.
Unlike conventional record that record data on charts, the Instrument displays the measured data acquired in the internal memory to a LCD in the form of wave forms, numerical values, and bar graphs. The measured data can also be saved to external storage media such as U Disk.
The data that have been saved to an external storage medium can be displayed on a PC using the standard software that comes with the package.
By using the RS232C or RS485 interface that comes standard with the Instrument, the data can be transferred to a PC (client function).
Standard Accessories
The following standard accessories are supplied with the instrument. Make sure that all items are present and undamaged.
This series of radar level meter adopted 26G high frequency radar sensor, the maximum measurement range can reach up to 70 meters. Antenna is optimized further processing, the new fast microprocessors have higher speed and efficiency can be done signal analysis, the instrumentation can be used for reactor, solid silo and very complex measurement environment.
The characteristics of 26G radar level meter:
Small antenna size, easy to install; Non-contact radar, no wear, no pollution.
Almost no corrosion, bubble effect; almost not affected by water vapor in the atmosphere, the temperature and pressure changes.
Serious dust environment on the high level meter work has little effect.
A shorter wavelength, the reflection of solid surface inclination is better.
Beam angle is small, the energy is concentrated, can enhance the ability of echo and to avoid interference.
The measuring range is smaller, for a measurement will yield good results.
High signal-to-noise ratio, the level fluctuation state can obtain better performance.
High frequency, measurement of solid and low dielectric constant of the best choice.
The hand held flow meter is a battery-powered ultrasonic flow meter with the capability of a full-size flow meter. It is carefully designed for portability and ease of use.
The hand held flow meter is based on clamp-on transit-time flow measurement principle. It measures the flow rate of liquid in a pipe from outside of the pipe by using a pair of ultrasonic transducers. In general, the liquid should be full in the pipe, and should contain very little particles or bubbles. Examples of applicable liquids are: water (hot water, chill water, city water, sea water, etc.); sewage; oil (crude oil, lubricating oil, diesel oil, fuel oil, etc.); chemicals (alcohol, acids, etc.); waste; beverage and liquid food, solvents and other liquids.
Due to the nature of clamp-on technique, the transducer installation is simple and no special skills or tools are required. Besides, there is no pressure drop, no moving parts, no leaks and no contamination.
The hand held flow meter utilizes our proprietary technologies such as advanced signal processing, low-voltage transmitting, small signal receiving with self-adapting, and etc. It also incorporates the latest surface-mounting semiconductors and mini PCB design techniques. The built-in rechargeable Ni-H battery can work continuously for more than 10 hours without recharge.
Features
0.5% of linearity Wide pipe size range
0.2% of repeatability 100 Pico-second time measurement resolution
1% of accuracy at velocity above 0.6ft/s. 0.5 second totalizing period
0.5% when on-site calibration is Built-in data-logger
available Clam-on transducer. Easy to install and to maintain
Bi-directional measurement Light weight, portable. Main unit 1.2lbs.
4 flow totalizers Also able to be used for long-term deployment
Proprietary low-voltage transmission
technology
This manual will assist you in installing, using and maintaining your flow meter. It is your responsibility to make sure that all operators have access to adequate instructions about safe operating and maintenance procedure.
Operating Principle:
Liquid flows through the turbine housing causing an internal rotor to spin. As the rotor spins, an electrical signal is generated in the pickup coil. This signal is converted into engineering units (liters, cubic meters, gallons etc.) on the local display where is applicable. Optional accessory modules can be used to export the signal to other equipment.
Upon receipt, examine your meter for visible damage. The turbine is a precision measuring instrument and should be handled carefully. Remove the protective plugs and caps for a thorough inspection. If any items are damaged or missing, contact us.
Make sure the turbine flow model meets your specific needs. For your future reference, it might be useful to record this information on nameplate in the manual in case it becomes unreadable on the turbine. Refer to the nameplate for your customized products specification.
. Cautions for Installation turbine type flow meter
4.1 Mounting Positions
â?¢ Pipes must be fully filled with liquids. It is essential that pipes remain fully filled at all times,
otherwise flow rate indications may be affected and measurement errors may be caused
Avoid Air Bubbles. If air bubbles enter a measurement pipe, flow rate indications may be affected
and measurement errors may be caused
Avoid all pipe locations where the flow is pulsating, such as in the outlet side of piston or
diaphragm pumps.
Avoid locations near equipment producing electrical interference such as electric motors,
transformers, variable frequency, etc.
This manual will assist you in installing, using and maintaining your flow meter. It is your responsibility to make sure that all
operators have access to adequate instructions about safe operating and maintenance procedure.
Operating Principle:
Gas flows through the turbine housing causing an internal rotor to spin. As the rotor spins, an electrical signal is generated in the pickup coil. This signal is converted into engineering units (liters, cubic meters, gallons etc.) on the local display where is applicable. Optional accessory modules can be used to export the signal to other equipment.
Upon receipt, examine your meter for visible damage. The turbine is a precision measuring instrument and should be handled carefully. Remove the protective plugs and caps for a thorough inspection. If any items are damaged or missing, contact
Make sure the turbine flow model meets your specific needs. For your future reference, it might be useful to record this information on nameplate in the manual in case it becomes unreadable on the turbine. Refer to the nameplate for your customized products specification.
Oval gear flowmeter is one of the most common volumetric flowmeter. Has a long history, widely used in petroleum, chemical, food, pharmaceutical, paper making industry, ship. For the measurement of a variety of viscosity in the range of medium. Especially applicable to the measurement of low viscosity medium. Mechanical and electronic counter.
Features:
Shellmaterialhas a variety of options: aluminum, stainless steel and cast steel, PPS,bronze etc.;
The rotorhas a variety ofmaterial: aluminum, iron, copper, stainless steel, Hastelloy alloy, graphite etc.;
Bearing materialhas a variety ofoptions: graphite, ceramics, hard alloy, bronze,stainless steel seal bearing;
O ringmade ofVITON, fluorine rubber, stainless steel, Teflon option;
With mechanical,electronictwo counters, multiple output modes: pulse equivalent, 4-20mA, RS485, Hart etc.;
GPS communication remote display and readout function optional
Operational principles
Measurement of elliptical gear flowmeter is composed of a casing and a pair of gearrotor and the upper and lower cover plate, a known volume of cavity between them as measure unit flowmeter. The slight pressure on the inlet of the gear rotor differential drive rotation, and will continue to import liquid through the cavity measurement to export. According to the rotation frequency rotor to counter (two meter), indicating the flow.
Sincerely thank you for buying our ultrasonic l level meter.
The meter includes several proprietary technologies, is safe and clean, with high precision and long service life, stable and reliable, and convenient to install and maintain, and is applicable to various fields of acid, alkali, salt, anticorrosion, and high temperature.
The meter can be connected to display meters or various DCS systems through 4~20mA or RS485 (Agreement Modbus or other custom agreements), to provide real-time level data for the operation of industrial automation.
The meter is with following features:
For circuit design, high-quality power modules are selected to be as power supply parts and highly stable and reliably imported devices are used as components of the meter. It can fully replace imported foreign meters of the same type.
Patent sonic-wave intelligent technology software can make intelligentized echo analysis. It needs neither debugging nor other special steps. This technology has functions of dynamic thinking and dynamic analysis.
Our sonic-wave intelligent patent technology greatly improves the meters precision, and the precision of level is up to 0.3%, which is enough to resist various interference waves.
The meter is a non-contact one and does not directly contact , so the fault rate is low. The meter can be installed in several different ways, and the user can calibrate the meter according to the Manual.
The meters all input and output lines must be with such protection functions as lightning protection and short circuit prevention.
LS1206B Propeller Type Current Meter is used to measure hourly average flow velocity on given points. Being light, impact and portable, this instrument applies to rivers, pipelines, irrigation and drainage channels, hydrological investigation, and runoff experiments.
II. Specification
The Rotary Diameter for Propeller: Ф60mm
The Hydraulic Thread Pitch for Propeller: H=120mm
Minimum Velocity Vo06m/sNormal
Vo0.05m/sPremium
Measuring Range: 0.077m/sNormal
0.057m/sPremium
Operational Depth 11.2mWading rod
Accuracyunbiased variance: m±2%Normal
m±1.0%Premium
V
Convex probe- Adult abdomen application
Frequency: 2.5, 3, 3.5, 4, H4, H5MHz
Power:5-100% (arithmetic progression of 5: 5,10,15â?¦100)
Gain:0-100
Dynamic range: 20-280% (geometric progression of 2 start from 20: 20,40,60â?¦280)
Gray map:0-7
Frame correlation:0-4
Filtering:0-4
Image denoising:0-14
Scanning depth:3-27.3cm
Body mark:17
Scanning range:50-100% (arithmetic progression of 10 start from 50: 50,60,70â?¦100)
Focus point:6
Pseudo color map :0-11
Linear density:64,128,256
TSI: normal, fat, fluid, muscle
Reversal:up/down, left/right
Compound frequency: on/off
Automatic optimization: on/off
Space compound: on/off
Linear probe-Carotid application
Frequency: 6, 7.5, 8.5, 10, H10 MHz
Power:5-100% (arithmetic progression of 5: 5,10,15â?¦100)
Gain:0-100
Dynamic range: 20-280% (geometric progression of 2 start from 20: 20,40,60â?¦280)
Gray map:0-7
Frame correlation:0-4
Filtering:0-4
Image denoising:0-14
Scanning depth:2-11cm
Body mark:13
Scanning range:50-100% (arithmetic progression of 10 start from 50: 50,60,70â?¦100)
Focus point:5
Pseudo color map :0-11
Linear density:64,128,256
TSI: normal, fat, fluid, muscle
Reversal:up/down, left/right
Steering: left/right
Trapezoid Imaging: on/off
ZERO100M Digital Mass Flow Meters patented and developed by our company (Chinese Patent No. 03119685.3, 03149996.1) are the leading meters for precision flow measurement. And with good reason, the meters offer the most accurate measurement available for virtually any process fluid, while exhibiting exceptionally low pressure drop. The meters offer direct mass flow, volume flow, density, and temperature measurement of liquids and slurries â?? without the need for additional equipment, manual calculations, or estimations.
The meters are designed for unsurpassed performance in even the harshest operating environments. They have no moving parts, and any special mounting or flow conditioning requirements. Every meter is available with stainless steel wetted parts and a wide variety of process connections to meet your every need.
The meters carry hazardous area approval for P. R. China.
Based on the measurement theory of flow meter, ZERO instrument developed a series of novel pressure influence target mode flow meters which utilize the modern sensor and computer technology. They have not only immovable characteristics such as of the Target Flow meter, Hole Board Flow meter and Turbine Flow meter, but also measure accuracy comparable to Cub age Flow meter. Since their characteristic of anti-interfere, anti-impurity, portability and reliability, they have been widely used in many fields of petroleum, chemical industry, energy, foodstuff, environment protection, water conservancy and so on. The flow meters are applicable to the following ranges::
Diameter ,152000mm or bigger.
High and low temperature, -196+450.
High pressure : 0
2) Characteristics
Measurement flow of liquid, gas, steam, ropy mediums or ambulatory mediums in low, normal or high temperature condition.
Total quantity measurement accuracy is not less than 0.2%.
High sensitivity, able to measure very low velocity below 0.8m/s.
No movable part, safe and reliable.
Wide measure range, bigger than 1:30.
Good repeatability, generally 0.108% , fast to measure.
Small pressure loss, only about 1/2P of Standard Hole Board.
Able to adopt hang weight method to test the flow meter.
Measurement range can be changed by replacing target according to need.
LCD display.
4-20mA, 0-10V, impulse, and RS485 outputs.
Easy installation and maintain.
