A.? Overview
Jinfeng JF - A10 medical oxygen flow meter, mainly flow sensor, flow calculator two parts, the product adopts the latest measurement and detection technology, the introduction of foreign advanced transmitter, LCD Chinese character display, by a number of senior engineers to use advanced testing equipment audit, designed specifically for the measurement of oxygen in the hospital department and designed to solve the current in the measurement of the flow of this It solves the problems of electromagnetic interference, small flow (when a person inhales oxygen) can not start, or large flow can not be measured. Has a wide range, high precision, compact and beautiful volume, easy to use and install, no mechanical failure, easy to read and watch, long service life, and many other features. Now it has become the best product for hospital ward, oxygen station, hyperbaric chamber and oxygen measurement.
Two features
1. The use of foreign advanced micro-flow detection technology and accessories, by the pipeline ( leak detector ) based on, and the development of the Jinfeng JF - A10 medical oxygen flow meter, can measure the lowest flow 0.001 m / h, the highest detection ceiling flow rate ≥ 16m / h, completely covering the general hospital oxygen flow range, without the need to choose the caliber of the instrument according to the size of the department's oxygen consumption.
2. The sensing parts adopt disposable packaging technology. The sensing parts adopt disposable encapsulation technology, no mechanical action parts, no blockage, no wear and tear, reliable work, service life of up to 30 years without repair rate, laser calibration, to ensure consistent interchangeability, the use of dual-sensing circuit, bidirectional airflow sensing.
3, ? Transmitter consists of a heater with temperature-sensitive components of the bridge structure, the flow of gas flow through the chip has a sensitive and rapid response, micro-bridge chip in direct contact with the gas, greatly reducing the error caused by the blockage of the ventilation holes or bypass.
4, ? High-definition liquid crystal display, with luminous display, equipped with instantaneous flow 0000, 000m/h, cumulative flow 000000, 000 m total two kinds, display month. Date and Beijing time, installed in the pipeline well outside to the department branch pipe or nurse station can be real-time monitoring of the oxygen situation.
5,? The flow calculator is equipped with debugging buttons for debugging time, date, clearing the accumulated flow, adjusting the contrast, and storing the oxygen flow rate for each day of the month for easy checking.
6. The instantaneous flow rate is 4-7 digits. Instantaneous flow rate is 4-7 digits to display 9999, 999 m/h, cumulative flow rate is 7-10 digits to display 9999999, 999 m, the digits will be automatically cleared when the meter is full, cycle counting.
7,? Jinfeng JF--A10 medical oxygen flowmeter, designed with real-time data storage function, to prevent sudden power loss of data. In the state of power failure, the internal data is permanently saved. Jinfeng flowmeter, stable as Mt.
Three, the main technical parameters
Working life: design working life of 35 years Power consumption: ≤ 60 mW
Design test pressure: 0.1?--2.5 MPA Accuracy: ± 1.8% FS
Working pressure: 0.1?-1.5 MPA Repeatability: ± 0.2%
Ambient temperature: -25 ℃ ~? Temperature : -25°C ~? --? +85 ℃ Response time : 2?--?6 ms
Maximum flow rate : ≥18.00 m/h Minimum flow rate : 0.001 m/h
Explosion-proof grade:?IP 65 Flame-proof type:?DIIBT6
Division IV, the use of the installation 1, the sensor installation. Sensor and pipeline through the oil non ball head welded connection, oil non ball head connector for the living joints, materials according to the selected pipe depending on work (stainless steel or copper pipe with the instrumentation in general with), the sensor can be installed horizontally or vertically, before and after the pipeline size does not require the installation of the sensor shell on the arrow should be the same as the direction of the flow of oxygen, the installation should be done to the welded joints and oil non ball joints and sensing connections for airtightness, the sensor should be installed on the sensor shell. After installation, the welded joints and the oil-non ball joints should be connected with the sensing joints for gas-tightness test. [? Strictly prohibit welding with the sensor, and then tighten it after welding] 2. Installation of the calculator. Calculator for the wall-mounted type, the back of the shell has two metal twisted piece, the installation of the hanging piece will be dialed up, in the appropriate location of the wall can be used to cement steel nails or self-powered wire fixed directly.
3?, the signal line connection. Sensor and calculator body is installed, the two ends of the signal line were inserted into the sensor and calculator on the socket. The aviation plug (∮12) on the sensor needs to be locked with its own nut after insertion.
4, power work. After all the above installations are finished, the meter can be energized to work, after inputting AC220V power supply, it will self-check and observe the display of the flow calculator, in the case of no oxygen consumption and no leakage of pipeline, the instantaneous flow rate will be 0000.000m/h, and the cumulative flow rate will be 000000.000m/h. The two working statuses will be self-checked and then display 0000.000 or the corresponding number, no change and no output; when opening the oxygen valve and outputting the oxygen, the meter will be energized to work. When the oxygen valve is opened and the oxygen is output, the instantaneous flow rate is rapidly converted to the corresponding oxygen quantity, and the cumulative record is made one by one.
V. Notes.
1.? Instrument factory set service life of 35 years, test pressure (25 kg) 2.5 MPA; working pressure 0.05 - 1.5 MPA within, before and after the opening of the valve should pay attention to slowly open to a smaller airflow to fill the pipeline, such as oxygen pressure in the pipeline to reach the use of the pressure, and then open the valve to the open state, the sensing part of the one-time encapsulation, the sensor is not detachable easy to damage (disassembly) The sensing part is a one-time package, the sensor is not removable and easy to be damaged (after disassembled, it will be scrapped at your own risk).
2. Jinfeng JF - A10 medical oxygen flowmeter, for the department ward; Jinfeng JF - A12 medical oxygen flowmeter, for the central feeding station output statistical flow meter. This machine sensor and accumulator must be installed according to the factory number one-to-one matching.
3, ? During the installation of the meter, be sure to connect the signal line before connecting to the power supply.4.? The flow meter for the leakage meter to improve the product, to ensure that the pipeline is not leaking under the circumstances of use, there is a small amount of leakage, the flow meter will also run the table, high sensitivity
5, flow transmitter installation should be labeled according to the transmitter arrows, is the direction of the gas flow, prohibited the direction of the reverse installation, which will result in damage to the transmitter or arithmetic number of errors will be present.
6, the product design, shape, image, description, etc., the company has the right to upgrade the right to change at any time without notice, the customer to receive the object shall prevail, the final interpretation of the Jinfeng company.
Six, packing? Jinfeng JF--A10 medical oxygen flowmeter, Jinfeng JF--A12 medical oxygen flowmeter.
One oxygen flow meter is packed as follows:
1) 1 set of flow sensor 2) 1 set of flow totalizer
3) 2 pairs of oil nonce ball joints 4) 1 signal cable 5) 1 certificate of conformity 6) 1 installation manual
7) 1 shipment list
Shandong Tai'an Jinfeng Measuring and Control Instrument Co.
Address: High-tech Development Zone, Feicheng City, Shandong Province
Overview
Oxygen flowmeter introduction
Xiamen Hongzhong SBL oxygen flowmeter is a new type of oxygen flowmeter developed on the basis of the original strain-gauge target flowmeter measurement principle, adopting the latest type of capacitance force sensors as the measuring and sensitive transmission element, and at the same time, utilizing the modern digital intelligent processing technology. Flow measurement instrument. It is a new type of flow meter developed on the basis of the measuring principle of oxygen flow meter, using the latest capacitive force sensor as the measuring and sensitive transmission element, and utilizing modern digital intelligent processing technology.
Oxygen flow meter working principle
When the medium in the measuring tube flow, because of its own kinetic energy and the target plate to produce differential pressure, and produce the target plate force, so that the target plate to produce a small amount of displacement, and the size of the force and the media flow rate of the square proportional to the mathematical formula:
F = Cd - A - ρ - V2/2
F: the target plate is subject to
Cd: fluid resistance coefficient
A: target plate on the axial projection area of the measuring tube
ρ: working condition of the medium density V: the medium in the measuring tube of the characteristic flow rate
Target plate by the force of the target rod transfer to make the sensor elastomer produces a small amount of change after the circuit, the output of the corresponding electrical signal.
The use of capacitive force sensors is the new product really high precision, high stability of the key core, completely changed the original strain target flowmeter temperature drift, poor resistance to overload (impact), the existence of static sealing points and other limitations, not only to play the target flowmeter the original technical advantages, but also with the volumetric flowmeter comparable to the measurement of the accuracy, coupled with its specific Anti-interference, anti-impurity performance, in addition to replacing the conventional flow can be measured by the flow measurement problems, especially in the small flow, high viscosity, easy to condense and easy to block, high and low temperatures, strong corrosion, strong vibration, such as the flow measurement of the difficult conditions have a very good adaptability. At present, it has been widely used in metallurgy, petroleum, chemical industry, energy, food, environmental protection and other fields of flow measurement.
Main Technical Parameters
Product Name: Oxygen Flow Meter
Diameter: DN15~DN3000mm
Nominal Pressure: 0.6~42MPa
Working Temperature: -180~+500℃
Precision: ±0.2~±1.5%FS
Range Ratio: 1:10
Range Ratio: 1:10
This is a good choice for the oxygen flow meter. :10
Shell: carbon steel; stainless steel (or according to user requirements) (fluorine lining)
Power supply: built-in 3.6VDC lithium battery (two years to change); external 24VDC (optional)
Output signals: 4 ~ 20mA two-wire; pulse 0 ~ 1000HZ; RS232/RS485 (or according to the user requirements of the negotiation to provide)
Output signals: 4 ~ 20mA 2-wire; pulse 0 ~ 1000Hz; RS232/RS485 (or according to the user requirements to provide)
Output signals: 4 ~ 20mA 2-wire; pulse 0 ~ 1000HZ; pulse 0 ~ 1000HZ; pulse 0 ~ 1000HZ; RS232/RS485 (or according to the user requirements of the negotiations to provide )
Protection level: IP65 IP67
Explosion-proof symbol: Intrinsically safe ExiallCT4; Flame-proof ExdllCT4
Executive standard: Enterprise standard Q/BET05-06
Meter display: Accumulated flow rate; Instantaneous flow rate; Working temperature; Working pressure (temperature and pressure compensated type only); Bar full scale percentage Failure self-test
Connection: double-flange, plug-in, clamped
Applications
Power generation and cogeneration, heating industry; aviation, aerospace, shipbuilding, nuclear energy and weaponry industry; machinery, metallurgy, coal and automobile manufacturing industry; petroleum, chemical industry; pharmaceutical, food and cigarette manufacturing industry; forest industry, agriculture and reclamation, and light industry, and so on.
Configuration table
Bend sensor a
Bend flowmeter host (LCD a
Differential pressure transmitter a
Temperature sensor a
Pressure transmitter a
Three valves a
Root valves (three-way rotary sewage valves plug valves) two
Host display Function
1, can display instantaneous flow, cumulative flow, temperature, pressure and other parameters;
2, compensation model is rich, can be compensated for general gas.
3, small flow rate to make up the amount of measurement function. Combined with real-time monitoring and recording function, it can effectively prevent gas theft.
4, high-precision bar graph display, real-time trend curve display, historical curve recall;
5, to provide the cumulative flow of daily, monthly and annual reports.
6, when the temperature sensor, pressure sensor failure, can be changed to set the temperature, pressure calculation compensation.
7, with a power-down record function, record each time the instrument is powered on, power failure time, to prevent users from power outages steal steam.
8, to provide instantaneous flow 4 ~ 20mA analog output.
9. Powerful network function: RS-232 or RS-485 communication interface.
Performance
Oxygen flowmeter from the above formula, VSF output pulse frequency signal is not affected by the fluid properties and component changes, that is, the instrumentation coefficient of a certain Reynolds number within the range of vortex generator and pipeline shape and size and so on. But as a flowmeter in the material balance and energy measurement needs to detect the mass flow, the output signal of the flowmeter should be monitored at the same time the volume flow and fluid density, fluid properties and components of the flow measurement or have a direct impact. Oxygen flow meter is based on the Kamen vortex principle for closed pipe fluid flow measurement of the new flow meter. Because it has a good ability to adapt to the medium, without temperature and pressure compensation can be directly measured steam, air, gas, water, liquid volume flow, equipped with temperature and pressure sensors can measure the nominal volume flow and mass flow, is the ideal alternative to throttling flowmeter.
In order to improve the high temperature and vibration resistance of the oxygen flowmeter, our company has recently developed the SKLUG improved vortex flow sensor, because of its unique structure and selection of materials so that the sensor can be used at high temperatures (350 ℃), strong vibration (≤ 1g) in the harsh conditions. In practice, often the maximum flow rate is much lower than the upper limit value of the instrument, with the change of load, the minimum flow rate is often lower than the lower limit value of the instrument, the instrument is not working in its best working section, in order to solve this problem, is usually used in the measurement of the reduction in the diameter to improve the measurement of flow rate at the measurement of the instrument, and the use of smaller diameter instruments to facilitate the measurement of the instrument, but this way of reducing must be in the diameter pipe and the instrument has a straight pipe between The length of 15D or more straight pipe section for rectification, so that the processing, installation are not convenient. I developed the longitudinal section of the shape of the arc of the LGZ reducer rectifier, with rectification, improve the flow rate and change the flow rate distribution of multiple roles, and its small structural dimensions, only 1/3 of the inner diameter of the process pipe, and vortex flowmeter as a whole, not only do not need to add another section of the straight section, but also reduce the requirements of the process pipe straight section, the installation is very convenient.
In order to facilitate the use of battery-powered in situ display gas vortex flowmeter using micro-power consumption of high-tech, lithium battery power supply can be uninterrupted operation for more than a year, saving the cable and display instrumentation procurement and installation costs, can be displayed in situ instantaneous flow rate, cumulative flow rate and so on. Temperature-compensated integral vortex flowmeter also has a temperature sensor, can directly measure the temperature of saturated steam and calculate the pressure, so as to display the mass flow rate of saturated steam. Temperature and pressure compensated integral type with temperature and pressure sensors, for gas flow measurement can be directly measured out of the temperature and pressure of the gas medium, so as to display the standard volume flow rate of gas.