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Tested fluids: liquid, gas, vapor (avoid multiphase flow and adhesion) Measurement flow range: see general specification sheet Accuracy: ± 0.75% of reading (liquid), ± 1% of reading (gas, vapor) Repeatability: ± 0.2% of the reading Calibration: The flowmeter undergoes water calibration before leaving the factory Normal working conditions:
Fluid temperature range: -40~260° C (general type)
-200~100 ° C (low temperature type, selected)
-40~450 ° C (high temperature type, selected)
Operating pressure range: -0.1Mpa (-1kg/cm2)~flange rated value
Environmental temperature range: -40~85 ° C (separated sensor, separated converter)
-40~85 ° C (integrated type)
-30~80 ° C (integrated with header)
Environmental humidity: 5~100% RH (at 40 ° C) (no condensation)
Power supply voltage: 10.5~42V DC (see the relationship diagram between power supply voltage and load resistance)
Electrical performance: Due to the use of common terminals for pulse output, alarm output, and status output, these functions cannot be used simultaneously.
Output signal: Dual output (can simultaneously obtain analog and transistor contact output signals). In this case, refer to the power supply and pulse output wiring in the "Installation Instructions" section.
Analog output: 4~20mA DC, 2-wire system
Transistor contact output: collector open circuit, 3-wire system
Use parameter settings to select pulse, alarm, or status output.
Contact rating: 30V DC, 120mA DC
Low level: 0~2V DC Communication conditions:
Communication signal: BRAN or HART communication signal (superimposed on a 4~20mA DC signal).
Communication line conditions: Load resistance: 250~600W (including cable resistance) Power supply voltage: 16.4~42V DC is used for digital communication BRAIN and HART protocols (intrinsic safety type is 16.4~30V DC). Distance from other power lines: greater than 15cm (avoid parallel wiring). BRAIN:
Communication distance: 2km PVC shielded cable with polyethylene insulation (when using "CEV" cable), the communication distance varies depending on the type of cable used.
Load capacitance: less than 0.22mF
Load inductance: less than 0.33mH
Accepting input impedance of the instrument: greater than 10kW at 2.4kHz HART：
Communication distance: When using multi stranded twisted pair cables, it can reach 1.5 km, and the communication range varies depending on the type of cable used.
Cable length for special applications: The cable length can be calculated using the following formula for special applications Function:
Damping time constant: 0~99 seconds (63% response time)
Note: Delay time: 0.5 seconds, analog output circuit time constant: 0.3 seconds Pulse output function: Pulse output:
Calibration pulse, non calibration pulse, frequency (number of pulses output per second at 100% output)
Pulse frequency: up to 10 kHz
Duty cycle: approximately 50% (1:2~2:1) Self diagnosis and alarm output *: If an alarm occurs (out of range output signal, EEPROM error, vibration noise, blockage, bubbles, etc.), an alarm output signal will be displayed. When an alarm is triggered, the alarm output signal changes from ON to OFF state. Status output function: Flow switch: If the flow rate is lower than the set flow rate value, it will output a status signal. The output mode of the status signal can be switched (ON/OFF). Data protection in case of power failure: Data (parameters, cumulative values, etc.) are stored in EEPROM and do not require a backup battery. Compensation function:
Instrument error compensation: The instrument error of the vortex flowmeter can be compensated for using 5 approximate polylines (with 5 compensation coefficients set).
Reynolds number compensation: When the Reynolds number is less than 20000, the output error can be compensated using 5 approximate polylines.
Gas expansion coefficient compensation: When measuring compressible gases and vapors, the expansion coefficient can be used to compensate for errors at flow rates higher than 35m/s. Hardware fault output: If the CPU or EEPROM fails, the analog output current is at the upper limit value of 21.6mA. The upper or lower limit (£ 3.6mA) of the analog output current can be selected through jumper wires. Display: It can simultaneously display instantaneous flow and cumulative flow expressed in% or flow units. Parameters can be set using the setting keys. Display brief information on self diagnosis. The installation direction of the monitor can be rotated 90 degrees left and right. -
Compliant with EMC standard: EN61326 AS/NZS 2064
Note: The signal cable of the separated converter should be wired with metal conduitSuzhou Henghe Vortex Flow Meter DY
Shanghai Guangshu Electromechanical Co., Ltd. supplies YOKOGAWA Yokogawa flow meters from Japan, as well as Yokogawa vortex flow meters, electromagnetic flow meters, rotor flow meters, mass flow meters, EJA pressure transmitters, BT200 hand controllers, HART475 hand controllers, etc. at competitive prices. Adhering to the principles of customer first, fairness and reasonableness, and mutual benefit, we strive to provide our customers with high-quality products and efficient after-sales service Product Introduction: The digital vortex flowmeter is composed of a field tested sensor and housing, and applies digital electronic technology with SSP (Spectrum Signal Processing) function. We have a sales performance of over 200000 vortex flowmeters and have developed digital vortex flowmeters based on this. Even under harsh operating conditions, digital vortex flowmeters have high accuracy and stability. Due to its strong reliability and reasonable design, digital vortex flowmeter can improve the efficiency of the equipment, thereby reducing production costs. The basic technical specifications include a new feature of SSP (Digital Signal Processing) technology, which is a part of the digital vortex flowmeter circuit. SSP can analyze the fluid situation inside the digital vortex flowmeter and automatically make adjustments based on the usage conditions using the analyzed data. SSP can correctly detect vortices in low flow areas, thereby significantly improving measurement stability. This feature is a digital signal processing technology developed by Yokogawa Corporation in Japan, which has never been present in previous vortex flowmeters. Advanced self diagnostic functions can detect and display usage conditions such as significant pipeline vibrations and abnormal flow patterns. High precision reading of ± 0.75% (liquid) reading of ± 1% (gas, vapor) temperature range large high temperature type: can reach up to 450 ° C low temperature type: can reach as low as -200 ° C parameter setting simple and frequently used parameter combinations are placed in one module, thereby reducing parameter setting time. Clear and concise display can simultaneously show traffic, cumulative traffic, and self diagnostic information. Analog/pulse dual output simultaneously outputs flow signal and pulse signal alarm output. If an alarm occurs, there will be an alarm signal output. When an alarm occurs in the status output (flow switch function), an alarm signal is output by the contact. In addition, when the flow rate is lower than the set value, a signal can be output through the contact. The converter has a compact structure and is equipped with BRAIN/HART communication and panel setting buttons. The sensor with the same structure is suitable for measuring liquids, gases, and vapors. The stainless steel sensor has no moving parts and is durable and safe, complying with NACE standards and NAMUR 43 standards
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