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DVZ Compact Vortex Flowmeter
Brand: KOBOLD Instruments, Inc
The compact KOBOLD Vortex flow meter Model DVZ is used for measuring and monitoring smaller and medium-sized flow of low viscosity, water-like liquids in pipes.
The device works using the vortex principle, making it virtually maintenance-free. This involves the installation of a sharp-edged object (the vortex generator) in the flow duct. Vortices are created behind the object whose frequency is proportional to the velocity of flow of the liquid.
The flow volume can be determined with a very great degree of accuracy by measuring the vortex frequency. This achieves a very high linearity over the whole measuring range.
The device can be fitted with switching, frequency or analogue outputs. There is also an optional compact electronics package that includes a digital display, and both a switching and Analog output. Dosing and metering electronics are currently being developed.
Specifications
Brand
Accuracy
- ± 2.5 % of Full Scale
Ambient Temperature Range
- -10° to 60° C (14° to 140° F)
Applications
- Measuring of Aggressive, High-purity or Salty Solutions
- Monitoring the Flow of Low Viscosity Liquids
- Unsuitable for Abrasive Media or Media Contaning A Large Proportion of Fibres
Approvals & Certifications
- CE
BSP Connection
- G 1” Female
- G 1/2” Female
- G 1/4” Female
- G 3/4” Female
- G 3/8” Female
Configuration
- 0(4)-20 mA Analog Output Adjustable - Compact Electroics
Connection Material
- 316 Stainless Steel - Wetted Materials
- Brass, up to 32 L/minute - Wetted Materials
- Nickel-Plated Brass, from 40 L/minute - Wetted Materials
Consumption
- 100 mA - Compact Electronics
- 25 mA
- 5 mA
- Approximately 150 mA - Counter, Dosing Electronics
Display
- 2 x 8-Digit LCD Display - Counter, Dosing Electronics
- 3-Digit LED Display
- Dual LED for Switching Condition & when Range Limit is Exceeded
Electrical Connectors
- DIN 43650
- M12 Plug - Counter Electronics
- M12 x 1
- M12, 5-Pole - Compact Electronics
- Plug M12 x 1.5-Pole
Electrical Contacts
- N/C or N/O Programmable - Compact Electronics
Enclosure, Body Material
- Fiberglss Reinforced
- Oxide Ceramic (Non-Wear Version)
- PPS
Environmental Protection
- IP65
Flow Rate
- 0.5 - 4.5 to 10 - 100 L/minute
Frequency
- 50 to 1,000 Hz
- 500 Hz
Function
- Correction Amount
- Dosing
- Fine Dosing
- Flow Switch
- Language
- Minimum/Max.imum
- Monitoring for Part
- Reset
- Start
- Stop
- Total Quantity
Load Impedance
- 500 ohms
Maximum System Pressure
- psi: 145 to 290 (kPa: 1,000 to 2,000, bar: 10 to 20)
Mounting Position
- Any, Flow in Direction of Arrow
NPT Connection
- 1” NPT Male
- 1/2” NPT Male
- 1/4” NPT Male
- 3/4” NPT Male
- 3/8” NPT Male
Output
- 0-20 mA
- 1 A at 30 Vdc
- 1 or 2 Open Collector - Compact Electronics
- 24 Vdc
- 30 Vac/Vdc / 2 A / 60 VA - Counter, Dosing Electronics
- 4-20 mA, 3-Wire
- Maximum
- PNP Pulse
Output Format
- Relay Change Over
Output Function
- Normally Closed
- Normally Open
Process Temperature
- 0° to 80° C (32° to 176° F)
Programming
- 4 Button
- Via 2 Buttons
Relay Output
- 2 Relays - Counter, Dosing Electronics
Repeatability
- ± 1 % of Full Scale
Response Time
- 1 second (At Flow Changes > 10 % of Full Scale)
Seat / Seal Material
- EPDM - Wetted Materials
- FPM - Wetted Materials
- NBR - Wetted Materials
Sensor / Probe Material
- PVDF - Wetted Materials
Supply Voltage
- 24 Vdc ± 20 %