WY/XMFL-5 standard flow integratorIt is an intelligent instrument for high-precision measurement of time, pulse signals, and current signals. Used for measuring and accumulating flow signals with output pulses (such as turbine, vortex street, spiral vortex, waist wheel, elliptical gear, etc.) and flow signals with output 4-20mA current and synchronization time.WY/XMFL-5 standard flow integratorIt can be widely used as a standard flow measurement and accumulation instrument in various flow measurement scenarios that require the measurement of pulse signals, current signals, and synchronization time. It is a high-precision and high-resolution intelligent flow measurement instrument.WY/XMFL-5 standard flow integratorCan be widely used as (1) a standard device for supersonic nozzle airflow; (2) Static (dynamic) quality method water flow standard device; (3) Static (dynamic) volumetric water flow standard device; (4) Bell type gas flow standard device; (5) Standard volume tube flow device; (6) Micro piston volume tube flow device (7) PVTt method gas flow standard device; (8) Standard meter method flow standard device; (9) Instrument manufacturer. Suitable for all occasions that require measuring time, frequency, and current. Due to its ability to measure both time and pulse flow signals, as well as multiple 4-20mA current signals (equipped with corresponding transmitters for convenient measurement of temperature, pressure, flow, humidity, and other parameters), and its convenient RS232 (RS485) interface for connecting with computers, it is easy to form a computer-controlled flow verification system. It is an instrument used by flow measurement departments, flow instrument manufacturers, and computerized flow calibration systems.WY/XMFL-5 standard flow integratorHe is an all-around warrior in the field of traffic measurement. Its main functions and features are as follows:
Displayed with 1.8 digits, cumulative flow and cumulative time can be displayed separately by switching with buttons, with a cumulative time resolution of 0.0001 seconds.
2.6 digit display, can display instantaneous flow rate and signal frequency separately through key switching, with a resolution of up to 0.001 units (HZ), and is not controlled by start or stop.
3. Two (or multiple) flow signal inputs can work simultaneously. Switch the display using the 1/2 buttons on the front panel.
There are five control methods for starting and stopping timing and counting, with the reset button on the front panel or controlled by a microcomputer. (1) Front panel control. Directly control through the start, stop, and reset keys. (2) Rear panel control. There are three control methods: external control switch contacts, external control voltage, and pulse quantity (which can be used for bell jar devices, volume tube devices, etc.). (3) The microcomputer starts, stops, and resets the timer value through software via RS232 (RS485) interface.
5. Adopting advanced dual time pulse interpolation method, the cumulative pulse resolution can reach 0.001Hz. It can greatly reduce calibration time, increase the flow calibration range of the flow calibration device, and reduce the volume of the flow calibration device.
6. High level and low-level bidirectional timing counting. High or low level timing and counting can be set through buttons (or via the RS232 interface of the microcomputer). Mainly used as a standard water (oil) flow device for controlling two containers with one commutator.
7. Multi segment linearization. It has multiple instrument coefficient setting functions and can automatically convert instrument coefficients within different flow ranges, which can offset the nonlinearity of the instrument.
8. Timer or quantitative control function. The time or pulse count (cumulative amount) can be pre-set, and it will automatically stop and output a control signal. The capacity of the control signal contact is 220V to 2A. (Two groups).
9. Control signal output to enable multiple integrators to work synchronously (start and stop).
10. For the standard meter calibration system, (1) 4-channel pulse (standard meter and verified meter) dual time pulse interpolation method can be provided, greatly reducing (several times) calibration time, greatly improving work efficiency, and greatly saving energy; (2) 4-5 pulse inputs (multiple ways to control synchronous start stop), multiple standard meters combined for calibration, one meter can form a standard meter calibration system (to be specified when ordering).
11. It can measure 1-4 channels of 4-20mA current signals and measure the average current value over a period of time (from start to finish). The current measurement resolution is 0.0001mA, which is 4 decimal places, and can replace a five and a half (or six and a half) digital desktop multimeter.
12.5 digit instrument coefficient setting.
13. Adopting 1/1000000 high-precision crystal oscillator can ensure the accuracy of timing.
14. Input signal frequency: 1-20kHz, signal amplitude: 3-20V. Can input ultra-low frequency signals (below 1HZ, can be as low as 0.03Hz or lower, optional).
15. Computer communication interface: RS232 or RS485.
16.12VDC DC voltage output.
17. Use EEROM devices to save input parameters such as flow coefficient, ensuring that they are not lost after a power outage for 10 years.
All CMOS devices have low power consumption, strong anti-interference ability, and high reliability.
19. Various intelligent instruments and microcomputer flow calibration systems (software and hardware) can be developed according to user requirements. 2. Fully automatic (semi-automatic) calibration system for flow standard devices
WY/XMFL-5 standard flow integratorIt can synchronously measure the number of pulses, time, and 4-20mA current, so as long as a WY/XMFL-5 standard flow integrator, a microcomputer, and corresponding transmitter are used to form a fully automatic (semi-automatic) flow verification system. The microcomputer software is written in C language or C++language. This system can complete functions such as collecting and processing calibration data, calculating calibration results, storing and querying calibration data and results, printing calibration data and results, and printing calibration certificates. By using this system, the accuracy of calibration data can be improved, work efficiency can be enhanced, and the labor intensity of staff can be reduced. A microcomputer fully automatic (semi-automatic) calibration system capable of completing the following devices:
Sonic nozzle airflow standard device;
Static (dynamic) quality method water flow standard device;
Static (dynamic) volumetric water flow standard device;
Bell type gas flow standard device;
Standard volume tube (micro volume tube) flow standard device;
Piston type micro volume tube flow standard device;
Standard meter method flow standard device;
PVTt method gas flow standard device.
The main features of this system are: (1) convenient calibration, and measuring equipment must be regularly sent for inspection. Since all signal measurements in this system are completed by the integrator, and all microcomputer signals are taken from the integrator, it is only necessary to send them for inspection. The solution of using an industrial control computer with a board card involves signal measurement being completed by the computer board card, which cannot be sent for inspection; (2) Low requirements for computers. Due to the use of RS232 (RS485) interface, there is no need to open the computer socket or have an industrial computer. Any microcomputer is sufficient; (3) High reliability, even if there is a problem with the microcomputer (such as malfunction or virus), it can be easily replaced with a new microcomputer, and the calibration work can be completed manually, equivalent to two systems of one automatic and one manual. The solution of using an industrial control computer with a board and sending it for repair will affect the work; (4) Easy to repair and upgrade, with a low price. If a certain instrument has a problem, it only needs to be replaced or repaired, and no professional personnel are required. Any staff member can complete the task.
There are two methods for system composition, one is the above method, which uses bothWY/XMFL-5 standard flow integratorMeasure time, frequency (pulse), and 4-20mA current output from each transmitter to measure physical quantities such as pressure and temperature. Another method is to use a WY/XMFL-4 standard flow integrator to measure time, frequency (pulse), pressure, temperature, and other physical quantities. The WY/XMPT-2 pressure and temperature measuring instrument is used, and they communicate with a microcomputer through RS-232 (RS-485). The advantage of this method is that: (1) both the pressure and temperature parameters of the standard device and the tested meter can be visually observed; (2) High measurement accuracy; (3) Each measuring instrument can be equipped with a calibration (testing) certificate from the metrology institute, and no further inspection is required.
This system can calibrate all flow meters that output pulse signals, flow meters that output 4-20mA current signals, and flow meters that only have digital displays without signal output.
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