Ultrasonic flowmeter

One, the introduction:
100 f series ultrasonic flowmeter basic configuration for the host (display) + sensor (external or insert) host has a standard wall hung, plate mounted and explosion-proof optional sensor is divided into external clip-on sensor and plug-in sensor;Outer clamp type sensor characteristic is in don't want to destroy pipeline applications, installation construction, simple operation without any external clip-on sensor installation is to put the two sensor apply is on the outer wall of pipeline, not contact with the current body.
Second, the measuring principle:
100 f series ultrasonic flowmeter using the low voltage, the principle of multiple pulse jet lag, with high precision and super stable double balanced differential signal emission and difference receive digital detection technology to measure the direction of the downstream and upstream sound wave transmission time, according to calculate the velocity of jet lag.When ultrasonic beam propagation in the liquid, the flow of the liquid produce small changes will make the travel time, the travel time is proportional to the liquid flow rate, the change of zero flow, the two sensors is identical to that of the time required to transmit and receive sound waves (the only actual measurement of zero flow technology);Medium flow, the flow direction of sound wave transmission time is greater than in the direction of flow of sound wave transmission time.
Typical application:
1, drinking water, river water and sea water, underground water, cooling water, high temperature water and sewage;
2, lubricating oil, diesel oil, fuel oil;
3, chemical liquid.
4, other homogeneous fluid.
Fourth, the characteristics of the ultrasonic flowmeter:
1, high precision measurement
Linearity is better than 0.5%, the repeatability accuracy better than 0.2%, measurement precision is better than that of + / - 1%;
2, strong memory function
Automatic memory before 512, 128 month before, in the first 10 years of accumulated flow, automatic memory before 64 calls and interruption time and flow, automatic memory 32 days before the working state of the flow meter is normal;
3, large measuring range
Choose different types of sensors, which can realize caliber DN15 ~ DN6000mm pipe flow measurement;
4, high reliability
With low voltage, pulse emission circuit, measuring precision, service life and reliability greatly increased;
5, support Chinese and English menu
Different versions of the flowmeter, can support Chinese or English menu, convenient and quick;
6, strong anti-interference ability
Adopt double balanced differential signal transmitting and receiving circuit, effectively resist frequency converter, television tower, strong interference sources such as high tension line.
Five, the main technical parameters of ultrasonic flowmeter:
Measuring liquid: water, sea water, a single fluid, such as alkali, and the turbidity is less than 10000 PPM, particle size less than 1 mm;
PVC pipe material: steel, cast iron, pipe ultrasonic can penetrate the full package, such as dense texture, and no serious corrosion and scaling allows thin layer compact lining;
Pipe lining material: rubber, epoxy asphalt, FRP, mortar, etc., or without lining;
Pipe diameter range: DN15mm to 6000 mm, inserted type sensor used by DN25mm ~ 6000 mm;
Velocity range: - 32 m/s ~ 0 ~ + 32 m/s, two-way flow;
The accuracy of the quasi: display value plus or minus 1.0% (standard conditions).Configuration plug-in sensor accuracy can reach 0.5%;
Linear degree: 0.5%;
Signal output: 4-20 ma, or 0 to 20 ma, the RS - 485;
The sense organ: divided into external clip-on and plug-in.Standard configuration for external clip-on.Insert the sensor maximum working pressure of 3 mpa;
Straight long: upstream > 10 D, 5 D > downstream from pump discharge > 30 D (D: diameter);
Display mode: 2 * 20 characters LCD display, with LED backlight.
Protection grade: IP65;
Explosion-proof grade: Exd Ⅱ BT4;
Power source: AC220V, DC8 or AC7 ~ 30 v ~ 36 v;
The environment temperature/humidity: host - 20 ℃ ~ + 80 ℃;Sensors - 20 ℃ ~ + 80 ℃ or - 20 ℃ ~ + 160 ℃ is optional, the sensor can work of flooding, the water depth is less than 2 m.
Six, ultrasonic flowmeter host features:
1, the whole display in English or in Chinese;
2, compact structure, strong, international advanced die-casting aluminum casing;
3, weight 2.5 Kg;
4, power AC220V, DC24V amphibious.
Seven, host performance:
1, the accuracy is better than 1%, the repeatability is 0.5%;
2, for 500 ms measurement cycle;
3, backlit LCD can display instantaneous flow and cumulative amount at the same time, the instantaneous heat and accumulative total quantity of heat, velocity, time and other data;
4, 4 ~ 20 ma output current, or 0 to 20 ma, such as impedance 0 ~ K, accuracy of 0.1%;
5, which can realize heat measurement or one dual purpose;
6, automatic recording, 64 month before, 64 days before the five years of accumulated flow;
7, automatically record before 64 calls and interruption time and flow rate, can be manually or automatically fill amount, reducing the loss of user traffic;
8, automatic record 64 days before the working state of the flow meter is normal;
9, the data interface to factory is configured to RS - 232, equipped with RS - 232 / RS - 485 converter can be turned into RS - 485.
Eight, special cable:
Models for SEYV75-2 block type, single can be extended to 500 meters, at the same time, pay attention not to parallel with high voltage cable, as far as possible to avoid the frequency converter.
Nine, pipes:
1, pipe: steel, stainless steel, cast iron, cement pipe, PVC, aluminum, copper, glass fiber reinforced plastic all quality of pipes, such as the lining is allowed
2, pipe inner: 15 mm to 6000 mm;
3, straight pipe, sensor installation point is best satisfy the 10 D, upstream downstream 5 D, 30 D to the pump discharge mean diameter (D);
Ten, measuring medium:
1, type: tap water, sea water, industrial sewage, various oil, acid alkali, alcohol, beer can support such as ultrasonic single homogeneous liquid;
2, temperature: 0 ℃ ~ 160 ℃;
3, turbidity, 10000 PPM or less, and the bubble content is small;
4, velocity: 0 ~ + 30 m/s;
5, flow: positive and reverse bidirectional measurement, and can be measured net flows;
Eleven, working environment:
1, the temperature of the host: - 30 ℃ ~ 80 ℃;
2, flow sensor temperature: - 40 ℃ ~ 160 ℃;
3, temperature sensor temperature: selected according to user's requirements;
4, host, humidity: 85% RH;
5, flow sensor, humidity: can work immersed depth of 3 m or less;
6, fixed hanging type ultrasonic flow power: AC220V DC8 ~ 36 v or AC7 ~ 30 v.
Twelve, sensor installation steps:
1, choose to have enough length of straight pipe position, had better be a new pipeline, no rust, easy to operate.
2, clear the clutter and on the pipeline corrosion, it is best to use the grinding Angle grinder abort rust.
The launch of 3, on the sensor surface with plenty of coupling agent (such as butter, vaseline, etc.), besmear coupling 4, mixture rule out is the purpose of the sensor emission surface and air between the external surface of the pipe.
5, special remind: should avoid sand and debris into the middle.
6, horizontal pipe wall upside may remain some bubble, in the selection of pipe should be installed on the tangent to the pipe on the side of a vertical surface.
13, ultrasonic flowmeter, directions for use:
1, zero flow rate checks
Around when the pipeline fluid static, without strong magnetic field interference, strong vibration, header shows zero, automatically set zero point at this time, eliminate the zero drift, the runtime must to remove small signal, usually 5% flow is less than the full process flow, automatic removal.Zero at the same time also can adjust menu.
2, instrument panel keyboard operation
Before start the meter running, the first to set parameters effectively, for example, using the system, installation, pipe diameter, pipe wall thickness, pipe material, pipe roughness, fluid type and the distance between two probes, velocity of flow unit, the minimum speed, maximum speed, etc.All parameters input correctly, instrument can display correctly the actual flow value
3, flowmeter calibration
Guarantee the accuracy of flowmeter, we conduct regular check, usually we use higher precision direct comparison, portable flowmeter: using the test data to compute error = - standard/standard measurements, using relative error calculation, correction factor, satisfy error of measurement error of plus or minus 2%, can meet the measurement requirements.This simple and convenient operation, can effectively improve the accuracy of measuring.

14, optional fixed clamp sensor:

Standard S1 type sensor standard M1 type sensor L1 type high temperature sensor S1H type high temperature sensor M1H type sensor

15, optional fixed embedding sensors:
Ultrasonic flowmeter plug-in sensor refers to the pipeline to be tested using special opening tools in online punching without shutdown, the ultrasonic flowmeter sensors and direct contact with the measured medium so as to realize the flow measurement of an installation, the sensor has solved the ultrasonic flowmeter outside bound type sensor in measuring scale thick line to receive the signal and measurement signal attenuation problem for a long time, has not stopped production installation, maintenance free, has nothing to do with the pipe diameter, pressure loss, etc.
Pipe material is carbon steel or stainless steel can be directly welded installation, for not directly welded pipe, such as cast iron, cement, glass fiber reinforced plastic, PVC pipe should be equipped with the factory production of special pipe hoop before installation, to prevent leaking, when you place an order, please provide accurate measured pipe diameter or circumference.

Standard insert insert C/B extended insert type B

16, equipped with fixed tube sections of sensors:
Pipe sections of the sensor is to use the flange will be measured pipeline section sensor and connected directly to a way of measuring, the sensor has solved the bound type and insertion type sensor during the installation process caused by man-made or pipe parameters being tested inaccurate error and cause of the decline of the accuracy of measurement, with high measurement precision, good stability, free maintenance and other characteristics, is the future development direction of ultrasonic flowmeter.

Health type pipe sections of sensor type PI sections of sensor standard pipe sections of sensors

17, ultrasonic flowmeter selection table:

18, design selection and ordering information:
1, according to the measurement of fluid medium, correct use ultrasonic flowmeter.
2, when placing order, please indicate the name of the measured medium, flow rate, pipe size and working pressure, temperature, density, viscosity, and so on and so forth.
3, according to the measuring range of the measurement of body, applications, and choose the right type of specification varieties.