Kobold DRH Rotating Vane Flowmeters

  

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

 

 

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

 

 

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

 

 

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

 

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

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