Kobold DF-H Pulse Output Vane Flowmeters

  

 

Measuring / switching range:

0.08 - 0.5 l/min ... 40 - 160 l/min water
Connection: G ⅛ ... G 1½, flange DN15 ... DN50,
Material:
brass, stainless steel, trogamide, polysulfone, PVDF
p_max: 6 / 10 / 16 / 100 bar
t_max: 80°C
Accuracy: ±2.5 % of full scale
Pulse output

Measuring sensors are available with pipe thread or flange connections; standard or high-pressure versions are optional. The standard version is delivered with a standard front cover from solid, transparent plastic, which allows the flow to be optically inspected. The rotary motion of the shining red vane can be clearly seen. Faults such as power failure or rotor blockage can thus be quickly detected in situ.

In addition to their use as measuring and monitoring systems, the devices can also be used as flow indicators. The standard front cover is replaced by a metal plate on the high-pressure version (up to 100 bar with the threaded version). The devices can be installed in any position. However, the flow must always be in the direction of the arrow, and the front panel of the device must be arranged in the vertical plane.

The fluidic housing must be full with liquid. Additional inlet or outlet pipes are not required. The large radial clearance between vane and housing wall renders the measuring sensor insensitive to dirt. Depending on the version, the connection fittings can be rotated and are bearing mounted. Switching electronics or vane front may be rotated at will for ease of viewing (while in service).

Model DF...H: DF-flow sensors are also available without a compact electronic. The linear flow proportional pulse signal provided by the sensor can be controlled by customer own electronics.

Measuring Sensor

• Connection: Pipe thread G ⅛ ... G 1½
• Measuring ranges: 0.08 - 0.5 ... 40 - 160 l/min
• Measuring accuracy: ±2.5% f.s.
  Eight different material combinations

 

• Connection: Flange DIN 2501, DN 15, DN 25, DN 40, DN 50
• Measuring ranges: 0.08 - 0.5 ... 40 - 160 l/min
• Measuring accuracy: ±2.5% f.s.
  Two different material combinations

Specifications

Measuring Ranges

Model	Flow rate [l/min]	Δp [bar] at max. flow rate	Filter [mm]	Recommended connection sizes
				Internal thread ["]	Flange DN
DF-05..	0.08 - 0.50	0.76	1.0	¼, (⅛)*	15
DF-14..	0.20 - 1.40	0.36	2.0	¼, ⅜	15
DF-25..	0.20 - 2.50	0.94	2.0	¼, ⅜	15
DF-26..	0.30 - 2.60	0.98	2.0	¼, ⅜	15
DF-50..	0.40 - 5.00	0.45	3.5	¼, ⅜, ½	15
DF-06..	0.25 - 6.00	1.00	3.2	¼, ⅜, ½	15
DF-12..	0.50 - 12.00	0.61	5.0	¼, ⅜, ½	15, 25
DF-13..	1.00 - 12.50	0.14	8.0	½, ¾, 1	15, 25
DF-24..	1.00 - 24.00	0.36	8.0	½, ¾, 1	15, 25
DF-48..	2.00 - 48.00	0.43	12.5	¾, 1	25
DF-60..	2.50 - 60.00	0.63	12.5	¾, 1	25, 40
DF-H2..	5.00 - 120.00	1.20	18.5	1, 1¼, 1½	25, 40, 50
DF-H6..	40.0 - 160.00	1.50	18.5	1, 1¼, 1½	25, 40, 50

Material Combinations

	Standard version				High-pressure version
Material combination	I	II	III	IV 1)	VI1)	VII1)
Order code	..A..	..B..	..D..	..E..	..G..	..H..
Connection types	Pipe thread	Pipe thread	Pipe thread	Pipe thread flange	Pipe thread	Pipe thread flange
Case	Trogamide	Polysulfone	Brass nickel- plated	St. steel4)	Brass nickel- plated	St. steel4)
Cover	Trogamide	Polysulfone	Polysulfone	Polysulfone	Brass nickel- plated	St. steel4)
Connection	Brass nickel- plated	St. steel4)	Brass nickel- plated	St. steel4)	Brass nickel- plated	St. steel4)
Locking pins	Brass	Brass	Brass	-	-	-
O-rings	NBR	FPM	NBR	FPM	NBR	FPM
Vane	POM	PTFE	POM	PTFE	POM	PTFE
Axle3)	St. steel4)	St. steel4)	St. steel4)	St. steel4)	St. steel4)	St. steel4)
Bearing3)	PTFE	PTFE	PTFE	PTFE	PTFE	PTFE
Screen	PTFE2)	PTFE2)	PTFE2)	PTFE2)	PTFE2)	PTFE2)
Max. operating pressure	10 bar	10 bar	16 bar	16 bar	100 bar	100 bar flange PN 40
Max. operating temperature	60 °C	80 °C	80 °C	80 °C	80 °C	80 °C

1) Connection cannot be rotated
2) Stainless steel for model DF 0.5
3) Special version upon request
4) Stainless steel 1.4571, 1.4404

Download Datasheet: Kobold DF-H Pulse Output Vane Flowmeters

Reference : kobold.com