Kobold DRH Rotating Vane Flow Meter

Kobold DRH Rotating Vane Flow Meter are used for measuring and monitoring low viscous liquids. Series DRH flow meters are working according the well-known rotating vane principle.

Kobold DRH Rotating Vane Flow Meter

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.

Kobold DRH Fields of Application

• Cooling water monitoring
• Agricultural machinery
• PCB board

Kobold 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
p_max: 100 bar
t_max: 80 °C
Accuracy: ±2.5 % of full scale
Pulse output, analogue output, contacts,
digital / pointer indicator

 

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
p_max: 100 bar
t_max: 80°C
Accuracy: ±2.5 % of full scale
Analogue output, digital indicator

 

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
p_max: 100 bar
t_max: 80°C
Accuracy: ±2.5 % of full scale
Pulse output, analogue output

 

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
p_max: 100 bar
t_max: 80°C
Accuracy: ±2.5 % of full scale
Analogue output, contacts NPN / PNP, digital indicator

 

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
p_max: 100 bar
t_max: 80°C
Accuracy: ±2.5 % of full scale
Analogue output, totalizer, contacts, digital indicator

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

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