Kobold DRH Rotating Vane Flowmeters

 

Kobold DRH Rotating Vane Flowmeters
Rotating Vane Flowmeter DRH

Specification

Measuring range: 0.2 – 8 … 2.5 – 50 l/min water
Connection: G ⅜, G 1, ⅜” NPT, 1″ NPT
Material: brass, stainless steel, POM, PVDF
pmax: 100 bar
tmax: 80 °C
Accuracy: ±2.5 % of full scale
Pulse output, analogue output, contacts,
digital / pointer indicator

 

Kobold DRH Rotating Vane Flowmeters
Rotating Vane Flowmeter – Analogue Output DRH with AUF

 

Measuring range: 0.2 – 8 … 2.5 – 50 l/min water
Connection: G ⅜, G 1, ⅜” NPT, 1″ NPT
Material: brass, stainless steel, POM, PVDF
pmax: 100 bar
tmax: 80°C
Accuracy: ±2.5 % of full scale
Analogue output, digital indicator

 

Kobold DRH Rotating Vane Flowmeters
Rotating Vane Flowmeter – Pulse or Analogue Output DRH-..F, DRH-..L

 

Measuring range: 0.2 – 8 … 2.5 – 50 l/min water
Connection: G ⅜, G 1, ⅜” NPT, 1″ NPT
Material: brass, stainless steel, POM, PVDF
pmax: 100 bar
tmax: 80°C
Accuracy: ±2.5 % of full scale
Pulse output, analogue output

 

Kobold DRH Rotating Vane Flowmeters
Rotating Vane Flowmeter – Compact Electronic DRH-..C3

 

Measuring range: 0.2 – 8 … 2.5 – 50 l/min water
Connection: G ⅜, G 1, ⅜” NPT, 1″ NPT
Material: brass, stainless steel, POM, PVDF
pmax: 100 bar
tmax: 80°C
Accuracy: ±2.5 % of full scale
Analogue output, contacts NPN / PNP, digital indicator

 

Kobold DRH Rotating Vane Flowmeters
Rotating Vane Flowmeter – Counter or Dosing DRH-..E/-..G

 

Measuring range: 0.2 – 8 … 2.5 – 50 l/min water
Connection: G ⅜, G 1, ⅜” NPT, 1″ NPT
Material: brass, stainless steel, POM, PVDF
pmax: 100 bar
tmax: 80°C
Accuracy: ±2.5 % of full scale
Analogue output, totalizer, contacts, digital indicator

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KOBOLD rotating vane flow meters series DRH are used for measuring and monitoring low viscous liquids. Series DRH flow meters are working according the well-known rotating vane principle.

A magnet fitted in the vane and hermetically sealed from the medium transfers non-contacting the rotary motion to a Hall-effect sensor mounted in the housing. The sensor converts the rotary motion which is proportional to the flow to a frequency signal.

A series-connected electronics unit converts the signal to an analogue output, limit contacts or display. These devices can be adapted to prevailing plant conditions with the 360° rotatable screw connections.

Fields of Application

  • Cooling water monitoring
  • Agricultural machinery
  • PCB board

DRH-…E14R, DRH-…G14 cable connection

Wire number DRH-…E14R

Counter electronics

DRH-…G14R

Dosing electronics

1 +24 VDC +24 VDC
2 GND GND
3 4-20 mA 4-20 mA
4 GND GND
5 do not connect Control 1*
6 Reset part quantity Control 2*
7 Relay S1 Relay S1
8 Relay S1 Relay S1
9 Relay S2 Relay S2
10 Relay S2 Relay S2

Control 1 <-> GND: Start-Dosing
Control 2 <-> GND: Stop-Dosing
Control 1 <-> Control 2: Reset-Dosing

Specifications

Technical Details

  • Material combinations: see order details
  • Max. operating pressure: see order details
  • Max. temperature: see order details
  • Measuring accuracy:
    ±2.5% of full scale
    ±5% of full scale (DRH-…F300)
  • Electrical connection: plug connector DIN 43 650, plug connector M12x1, cable
  • Pressure loss: max. 1 bar at max. range
  • Protection: IP 65

Electronics

1. Frequency output (…F300)

  • Power supply: 12-28 VDC
  • Power consumption: 10 mA
  • Pulse output: PNP, open collector max. 25 mA
  • Electrical connection: plug connector M12x1

2. Frequency output with frequency divider

  • Power supply: 24 VDC ±20%
  • Power consumption: 15 mA
  • Pulse output: PNP, open collector, max. 25 mA
  • Electrical connection: plug connector M12x1
  • Division ratio: 1… 1/128, factory set

3. Analogue output (Option plug-on display

  • Power supply: 24 VDC ±20%
  • Output: 0-20 mA or 4-20 mA,
  • 2-wire or 3-wire
  • Max. load: 500 Ω
  • Electrical connection: plug connector M12x1 or DIN 43650
  • Option: plug-on display (with plug connector DIN 43650 and output 4-20 mA only), 2-wire

4. Compact electronics

  • Display: 3-segment LED
  • Analogue output: (0)4…20 mA adjustable, max. 500 W
  • Switching outputs: 1 (2) semiconductor PNP or NPN factory set
  • Contact operation: N/C / N/O contact frequency programmable
  • Setting: with 2 buttons
  • Power supply: 24 VDC ±20%, 3-wire technology approx. 100 mA
  • Electrical connection: plug connector M12x1

DRH-…Exxx (Counter electronics)

  • Display: LCD, 2 x 8 digit, illuminated total, part and flow quantities, units selectable
  • Quantity meter: 8-digit
  • Analogue output: (0)4…20 mA adjustable
  • Load: max. 500 Ω
  • Switching output: 2 relays, max. 30 VAC/DC /2A/60 VA
  • Settings: via 4 buttons
  • Functions: reset, MIN/MAX memory, flow monitor, monitoring for part and total quantity, language
  • Power supply: 24 VDC ±20%, 3-wire
  • Power consumption: approx. 150 mA
  • Electrical connections: cable connection or M 12 plug

More technical details see data sheet ZED

DRH-…Gxxx (Dosing electronics)

  • Display: LCD, 2 x 8 digit, illuminated dosing-, total-, and flow quantity, units selectable
  • Quantity meter: 8-digit
  • Dosage: 5-digit
  • Analogue output: (0)4…20 mA adjustable
  • Load: max. 500 Ω
  • Switching output: 2 relays, max. 30 VAC/DC /2A/60 VA
  • Settings: via 4 buttons
  • Functions: dosing (relay S2), start, stop, reset, fine dosing, correction amount, flow switch, total quantity, language
  • Power supply: 24 VDC ±20%, 3-wire
  • Power consumption: approx. 150 mA
  • Electrical connection: cable connection or M12 plug

More technical details see data sheet ZED

Download Datasheet: Kobold DRH Rotating Vane Flowmeters

Reference : kobold.com