VC Kracht Gear Flow Meter

 

Kracht PD Flow Meter

Positive Displacement Flow Meters

Gear Flow Meter

• The measuring gears are driven by the liquid flow on the principle of a gear motor.
• The gears run without contact in the measuring chamber.
• The bearing elements are a low-friction ball or plain bearings.
• The movement of the gears is sampled without contact by means of two sensors located in the cover.
• Between the sensor compartment and measuring chamber is located a pressure-resistant, non-magnetic separator plate.
• When the measuring mechanism rotates by one tooth pitch, the sensor emits a signal which corresponds to the geometrical tooth volume V _gz.
• The signal is converted into a square-wave signal by the preamplifier.
• The two-channel sampling permits better resolution as well as recognition of the flow direction.

Construction

1 Housing

2 Cover

3 Gear

4 Preamplifier

5 Connector

6 Sensor

7 Bearing assembly

Specification

Measuring range	0.008 ... 700 l/min
	0.002... 185 gal/min
Measuring the ratio	1: 300
Operating pressure	... 400 bar
	... 5802 psi

Series Selection/Summary of Variants

Series		1	2	3	4	5	6	7	8
Material Housing		Spheroidal cast iron EN-GJS-400-15 (/79 EN-GJS-600-3)	Spheroidal cast iron EN-GJS-400-15	Spheroidal cast iron EN-GJS-400-15	Spheroidal cast iron EN-GJS-400-15	stainless steel 1.4404	stainless steel 1.4404	Spheroidal cast iron EN-GJS-400-15	stainless steel 1.4404
Material gears		steel 1.7139	steel 1.7139	steel 1.7139	steel 1.7139	stainless steel 1.4462	stainless steel 1.4462	steel 1.7139	stainless steel 1.4462
Bearing		ball bearings	ball bearings	bronze- plain bearings	carbide plain bearings	carbide plain bearings	stainless steel plain bearings	hybrid plain bearings	hybrid plain bearings
Connection		P	P	P	P	P/R	P/R	P	P
Max. perm. foreign particle size in the medium (μm)		20	30	50	30	30	20	20	20
Accuracy (from measuring value)		± 0.3 % at 20 cSt	± 0.5 % at 50 cSt	± 1 % at 100 cSt	± 0.5 % at 100 cSt	± 0.5 % at 100 cSt	± 0.3 % at 20 cSt	± 1 % at 20 cSt	± 1 % at 20 cSt
Nominal Size	Starting point at l/min gal./min	Measuring range l/min gal./min
0.025	0.001 0.0003	0.008-2 0.002-0.53	-	-	-	0.02-2* 0.005-0.53*	0.008-2 0.002-0.53	0.008-2 0.002-0.53	0.008-2 0.002-0.53
0.04	0.004 0.001	0.02-4 0.005-1.06	-	-	-	-	0.02-4 0.005-1.06	0.02-4 0.005-1.06	0.02-4 0.005-1.06
0.1	0.008 0.002	0.04-8 0.01-2.1	-	-	0.04-8 0.01-2.1	-	0.04-8 0.01-2.1	0.04-8 0.01-2.1	0.04-8 0.01-2.1
0.2	0.010 0.003	0.16-16 0.04-4.2	0.16-16 0.04-4.2	-	0.16-16 0.04-4.2	0.16-16 0.04-4.2	0.16-16 0.04-4.2	0.16-16 0.04-4.2	0.16-16 0.04-4.2
0.4	0.01 0.003	0.2-40 0.05-10.6	-	-	0.2-30 0.05-8		-	-	-
1	0.02 0.05	0.4-80 0.1-21	0.4-80 0.1-21	0.6-40 0.15-10.6	0.3-60 0.08-16	0.3-60 0.08-16	0.4-80 0.1-21	0.4-80 0.1-21	0.4-80 0.1-21
3	0.03 0.008	0.6-160 0.16-42	0.6-160 0.16-42	-	0.6-100 0.16-26	0.6-100 0.16-26	0.6-160 0.16-42	-	-
5	0.04 0.01	1-250 0.26-66	1-250 0.26-66	1.2-80 0.32-21	1-160 0.26-42	1-160 0.26-42	1-250 0.26-66	-	-
12	0.03 0.008	2-600 0.53-159	-	-	-	-	-	-	-
16	0.03 0.008	3-700 0.79-185	-	-	-	-	-	-	-

More information: Brochure Kracht VC

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