Target flowmeter

Profile description: BSL series target flowmeter adopts chip level of capacitive force sensor, the highly effective resistance to overload structure design is the new product key core to realize high precision, high stability, together with its unique anti-interference, impurity resistance, in addition to substitute for the conventional flow measurement can measure flow problems, especially in high viscosity, smudgy medium, easy setting wall, high temperature, low temperature, strong corrosion and other flow measurement has the very good adaptability in difficult conditions.Widely used in petroleum, chemical, energy, food, environmental protection, water conservancy and other fields.Look from the effect after its use, target flowmeter has very broad applicability, namely:
1, suitable for all kinds of pipe diameter: from 15-2000 mm Φ Φ to bigger.
2, suitable for high and low temperature medium: from - 196 ℃ ~ + 450 ℃.
3, suitable for high pressure conditions: from 0 ~ 42 mpa pressure (table).
Second, the product features: BSL series target flowmeter in combination with the new sensor technology and modern digital technology development, the development of the new type of dynamic differential target flowmeter.He has both traditional target type, hole plate, the characteristics of vortex flowmeter, such as no moving parts.And comparable to volumetric flowmeter to measure precision, anti-jamming, together with its peculiar impurity resistance, portable and reliable, etc.
1, suitable for all kinds of pipe diameter: 15-2000 - mm to bigger.
2, suitable for high and low temperature medium: - 196 ℃ to + 450 ℃.Can accurately measure all kinds of room temperature, high temperature, low temperature condition of the liquid, gas, steam, viscous medium and all kinds of fluid flow.
3, high sensitivity, can measure small flow rate, it can measure the low velocity of 0.08 m/s.
4, suitable for high pressure conditions: 0-42 mpa.
5, have no moving parts, high accuracy.
6, good repeatability, is 0.1 0.08% commonly, fast measurement.
Total 7, accurate measurement, high accuracy, measurement can reach 0.2%.
8, good vibration resistance to electromagnetic interference, can dry calibration, and farmar hanging weight method.
9, body material: carbon steel, 304316316 L.
10, mode of power supply: 3.6 V lithium batteries;24 VDC power supply;Double power supply: 3.6 V lithium battery + 24 VDC power supply.
Three, measuring principle:
When the medium in the measurement of pipe flow, because of its kinetic energy through the choke a (target flowmeter) sometimes produce pressure difference, and there is a force to choke a, size of the force is directly proportional to the square of the velocity with the media, its mathematical expression is as follows:
CdA rho, V2 / F = 2
Type: F choke a force (kg) of
Drag coefficient Cd object
A choke pieces on the measuring tube axial projection area (was)
Rho conditions of medium density (kg/m3)
V medium in the measuring tube average flow velocity (m/s)
Choke (target) accept force F, the rigid connection of transfer (rod) to the sensor, the sensor produces voltage signal output: V = KF
Type: V - sensor output voltage (mV), K - proportionality constant,
F - choke a (target) by force (kg),
The voltage signal after preamplifier, AD conversion and computer treatment, obtains the corresponding instantaneous flow and cumulative total.
Four, main performance target flowmeter:
1, the measurement range of 0-400 t/h;
2, precision grade: 0.5% FS 1.0% FS 2.0% FS.
3, the output signal: 4 ~ 20 ma two wire output and flow into a linear relationship;
4, power supply voltage: 12 ~ 36 VDC;
5, nominal pressure: 1.6 2.5 4.0 1.6 MPa;
6, environment temperature: - 30 ℃ ~ 60 ℃ (special: - 40 ℃ ~ 80 ℃).
7, medium temperature: regular 100 ℃ or less (no heat sink);
Type of high temperature of 400 ℃ or less (with heat sink);
8, liquid material: room for carbon steel or 1 cr18i9ti;The rest are 1 cr18ni9ti;
9, shell material: aluminum;
10, flange standard: DIN2501 special type chosen by the user;
11, cable interface: M20 * 1.5 (internal thread);
12, protection grade: IP65;
13, load, maximum load resistance (supply voltage - 12) = = 50 * 600 Ω @ 24 v;
14, alarm output, the form of open collector, the maximum input current 100 ma, the biggest switch voltage 30 VDC, with belt deviation control;
15, pulse output: minimum pulse width 50 ms, dual output;
16, maximum cumulative flow display value of 50000 units, automatic reset.
17, damping time: 1 ~ 100 seconds arbitrary adjustable.
18, explosion-proof, explosion-proof, explosion-proof certificate number.Five, the installation instructions:
1, normal temperature, low temperature, high temperature type flowmeter depending on the different working conditions using horizontal, vertical or inverted type installation (the factory check list shall prevail);
2, medium temperature when + 300 degrees above, the user response to flowmeter shell heat insulation measures are taken to prevent thermal radiation damage to the header (header working temperature for 30 to + 70 degrees c), the same work under medium temperature - 100 degrees, also should adopt anti-freezing measures;
3, to guarantee the accuracy of the flowmeter measurement, requirement set straight pipe before and after;
4, in order to ensure the flowmeter in inspection and replacement does not affect the system work, should try to set the by-pass valve (3) and the cut-off valve (1, 2);
5, due to the need of technology can be used vertical installation, the flow direction of medium under test can be bottom-up, also can from top to bottom, but when ordering should explain to the supplier;
6, flow meter diameter and connected to the pipe diameter size is the same as far as possible, to reduce the flow disturbance, caused by measurement error;
7, flowmeter shell must be reliable grounding, without ground conditions should explain to the manufacturer.
Working environment:
1, the atmospheric pressure: 86 ~ l06kPa;
2, the ambient temperature: - 20 ℃ ~ + 60 ℃ (8 ℉ ~ l40 ℉);
3, ambient relative humidity: 95% RH or less (+ 25 ℃);
4, flameproof flowmeter can be applied to contain A and B Ⅱ Ⅱ, Ⅱ c-class T1 ~ T4 group of explosive gas mixture of 1 zone and 2 zone for the dangerous sites;
5, the Ann type flowmeter can be applicable to contain A and B Ⅱ Ⅱ, Ⅱ c-class T1 ~ T4 group of explosive gas mixture of 0, 1, 2, the dangerous places.Seven, typical applications: ZW series - BSL target flowmeter has been widely used in semi water gas, coke oven gas, heavy oil, residual oil metering, asphalt, liquid paraffin, toluene, sulfuric acid, natural gas, methane chloride, flue gas, chlorine gas, sewage, water, etc, and other special medium measurement, resolves the problem for many years the industry flow metering.Eight, technical data sheet:

Nine, the target flowmeter selection table and model description: 1, the selection table:

2, selection of the sample:
BSL - 100 aqcdpixn meaning is: the target flowmeter for pipe flange, measured medium is gas, the nominal diameter is 100 mm, medium temperature to room temperature, nominal pressure of 2.5 MPa (flange specifications) with pressure compensation, 4 ~ 20 ma output current, explosion-proof marks for this Ann model, measuring pipe material is stainless steel.3, type: a, flow meter flange specification is the standard of GB/T series of related technical parameters, technical conditions and types.Can also according to customer request processing;
B, in the flowmeter selection, the user should be in accordance with the model description format, specify the required flow meter requirements;
C, if users need to use this model shows that outside diameter, the nominal pressure and the output form, please specify;
D, in choosing a type of high temperature flow timing, except in accordance with the model description format to fill in should specifically indicate the highest working temperature of the measured medium;
E, with temperature and pressure compensation flowmeter, except in accordance with the model description format to fill in should be mentioned that the operation condition of the need to compensate temperature and the working condition of pressure range;
F, user needs special measuring pipe material, should be explained.