Spot supply DYA-D0D Yokogawa Vortex Flow Converter from Japan

Spot supply DYA-D0D Yokogawa Vortex Flow Converter from Japan

Spot supply DYA-D0D Yokogawa Vortex Flow Converter from JapanBasic technical specifications:
New features with SSP (Digital Signal Processing) technology
SSP is a part of the digital vortex flowmeter circuit. SSP can analyze the fluid situation inside the digital vortex flowmeter and automatically make optimal adjustments based on the analyzed data. SSP can correctly detect vortices in low flow areas, 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.
Good self diagnostic function
Capable of identifying and displaying usage conditions such as significant pipeline vibrations and abnormal flow patterns.
high precision
± 0.75% of reading (liquid)
± 1% of reading (gas, steam)
Large temperature range
High temperature type: can reach up to 450 ° C
Low temperature type: up to -200 ° C
Simple parameter setting
Frequent use of parameter combinations in one module reduces parameter setting time.
Clear and concise display
Can display traffic, cumulative traffic, and self diagnostic information simultaneously.
Analog/pulse dual output
Simultaneously output flow signal and pulse signal
alarm output
If an alarm occurs, an alarm signal will be output.
Status output (flow switch function)
When an alarm occurs, the contact outputs an alarm signal. In addition, when the flow rate is lower than the set value, a signal can be output through the contact.
Compact converter structure
Equipped with BRAIN/HART communication and panel setting buttons
Sensors with the same structure can be used to measure liquids, gases, and vapors
Stainless steel sensor without moving parts, durable and safe
Complies with NACE standards
Compliant with NAMUR43 standard
Separate cable with a large length of 30m
Explosion proof structure: JIS/FM/ATEX/CSA/SAA (explosion-proof/intrinsic safety)
Basic performance indicators:
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: 10.5~42VDC (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: 4~20mADC, 2-wire system
Transistor contact output: collector open circuit, 3-wire system
Use parameter settings to select pulse, alarm, or status output.
Contact rating: 30VDC, 120mADC
Low level: 0~2VDC
Communication conditions:
Communication signal: BRAN or HART communication signal (superimposed on a 4-20mADC signal).
Communication line conditions: Load resistance: 250~600W (including cable resistance)
Power supply voltage: 16.4~42VDC is used for digital communication BRAIN and HART protocols (intrinsic safety type is 16.4~30VDC). 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 up to 1.5km, 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: 0~99sec (63% response time)
Note: Delay time: 0.5sec, analog output circuit time constant: 0.3sec
Pulse output function: Pulse output:
Calibration pulse, non calibration pulse, frequency (number of pulses output per second at 100% output)
Pulse frequency: up to 10kHz
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 standards: EN61326AS/NZS2064
Note: The signal cable of the separated converter should be wired with metal conduit

Spot supply DYA-D0D Yokogawa Vortex Flow Converter from Japan