Kobold DPL Rotating Vane Flow Meter are used to measure and monitor liquids. Its compact design allows it to be used in equipment where space is at a premium. The large number of pulse evaluation options offered means that the system is suited for a wide range of applications.
Kobold DPL Areas of Application
- Low viscosity liquids
- Non-conductive liquids
- Volume dosing with external electronics
- Filter aid
- Beverage industry
Technical Details
- Accuracy:
± 2,5% of full scale
± 5% of full scale (OEM version) - Linearity: 1% of full scale
- Medium temperature: -40…+70°C
- Ambient temperature: -30…+60°C
- Max. operating pressure:10 bar
- Protection: IP 65
Kobold DPL Materials
- Housing: polypropylene
- Rotating vane: polypropylene
- Axle/bearing: sapphire
- Vane mount: polysulfone
- Gasket: NBR, FPM or EPDM
Operating Principles
The medium flows through a specially shaped flow housing and causes a vane to rotate. This rotary motion is sensed by optoelectronics in a non-contacting manner, and converted to an asymmetric frequency signal or an analogue signal. A frequency divider with symmetrical output is available as an option. The frequency is proportional to the flow velocity. The vane is sapphire-supported: this ensures a high degree of linearity and long service life.
Kobold DPL Electronics
Frequency output (OEM without CE-Sign)
- Power supply: 4.5 – 12 VDC
- Supply current: typ. 7 mA
- Signal amplitude high: approx. power supply
- Signal amplitude low: ≤0.2 V
- Transmitter cut-off voltage: 3 V max.
- Transmitter supply current: 8 – 12 mA
- Output loss: max. 2.5 mWatt
- Electrical connection: solder pins
- Pulse output: NPN, Open Collect., max.10 mA
Frequency output (option frequency divider)
- Power supply: 24 VDC ±20%
- Supply current: 40 – 50 mA
- Signal amplitude high: approx. power supply
- Signal amplitude low: ≤0.2 V
- Output loss: max. 2.5 mWatt
- Electrical connection: plug M12x1 (option: 2 m PVC cable)
- Division ratio (option): 1…1⁄128 factory set
- Pulse output: PNP, open collector, max. 20 mA
Analogue output (option plug-on display)
- Power supply: 24 VDC ±20%
- Output: 0-20 mA or 4-20 mA, 3-wire technology
- Max. load: 500 Ω
- Electrical connection: plug connector M12x1 or DIN 43 650
- Option: plug-on display (with plug connector DIN 43 650 only)
Compact electronics
- Display: 3-position LED
- Analogue output: (0)4…20 mA adjustable, max. 500 Ω
- Switching outputs: 1 (2) semiconductor PNP or NPN, factory set
- Contact operation: programmable N/C/ N/O contact
- Setting: via 2 buttons
- Power supply: 24 VDC ±20%, approx. 100 mA, 3-wire technology
- Electrical connection: plug connector M12x1
- Measuring range: 0.025 – 0.5 … 1 – 25 l/min water
- Connection: G ½ male thread or hose connector
- Material: polypropylene
- pmax: 10 bar
- tmax: 70°C
- Linearity: ±1 %
- Pulse output, frequency divider
- Measuring range: 0.025 – 0.5 … 1 – 25 l/min water
- Connection: G ½ male thread or hose connector
- Material: polypropylene
- pmax: 10 bar
- tmax: 70°C
- Linearity: ±1 %
- Analogue output
- Measuring range: 0.025 – 0.5 … 1 – 25 l/min water
- Connection: G ½ male thread or hose connector
- Material: polypropylene
- pmax: 10 bar
- tmax: 70°C
- Linearity: ±1 %
- Analogue output, digital indicator
- Measuring range: 0.025 – 0.5 … 1 – 25 l/min water
- Connection: G ½ male thread or hose connector
- Material: polypropylene
- pmax: 10 bar
- tmax: 70°C
- Linearity: ±1 %
- Analogue output, contacts NPN / PNP, digital indicator
- Measuring range: 0.025 – 0.5 … 1 – 25 l/min water
- Connection: G ½ male thread or hose connector
- Material: polypropylene
- pmax: 10 bar
- tmax: 70°C
- Linearity: ±1 %
- Analogue output, totalizer, contacts, digital indicator
Download Datasheet: Kobold DPL Rotating Vane Flowmeters
Reference : kobold.com
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