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 | 0,25 |
| Operating pressure | … 400 bar |
| … 5802 psi |
Series Selection/Summary of Variants
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
| Spheroidal cast iron | Spheroidal cast iron | Spheroidal cast iron | Spheroidal cast iron | stainless steel | stainless steel | Spheroidal cast iron | stainless steel |
| EN-GJS-400-15 | EN-GJS-400-15 | EN-GJS-400-15 | EN-GJS-400-15 | 14.404 | 14.404 | EN-GJS-400-15 | 14.404 |
| (/79 EN-GJS-600-3) | |||||||
| steel | steel | steel | steel | stainless steel | stainless steel | steel | stainless steel |
| 17.139 | 17.139 | 17.139 | 17.139 | 14.462 | 14.462 | 17.139 | 14.462 |
| ball bearings | ball bearings | bronze- plain bearings | carbide plain bearings | carbide plain bearings | stainless steel plain bearings | hybrid plain bearings | hybrid plain bearings |
| P | P | P | P | P/R | P/R | P | P |
| 20 | 30 | 50 | 30 | 30 | 20 | 20 | 20 |
| ± 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 |
| Measuring range | |||||||
| l/min | |||||||
| gal./min | |||||||
| 0.008-2 | – | – | – | 0.02-2* | 0.008-2 | 0.008-2 | 0.008-2 |
| 0.002-0.53 | 0.005-0.53* | 0.002-0.53 | 0.002-0.53 | 0.002-0.53 | |||
| 0.02-4 | – | – | – | – | 0.02-4 | 0.02-4 | 0.02-4 |
| 0.005-1.06 | 0.005-1.06 | 0.005-1.06 | 0.005-1.06 | ||||
| 0.04-8 | – | – | 0.04-8 | – | 0.04-8 | 0.04-8 | 0.04-8 |
| 0.01-2.1 | 0.01-2.1 | 0.01-2.1 | 0.01-2.1 | 0.01-2.1 | |||
| 0.16-16 | 0.16-16 | – | 0.16-16 | 0.16-16 | 0.16-16 | 0.16-16 | 0.16-16 |
| 0.04-4.2 | 0.04-4.2 | 0.04-4.2 | 0.04-4.2 | 0.04-4.2 | 0.04-4.2 | 0.04-4.2 | |
| 0.2-40 | – | – | 0.2-30 | – | – | – | |
| 0.05-10.6 | 0.05-8 | ||||||
| 0.4-80 | 0.4-80 | 0.6-40 | 0.3-60 | 0.3-60 | 0.4-80 | 0.4-80 | 0.4-80 |
| 0.1-21 | 0.1-21 | 0.15-10.6 | 0.08-16 | 0.08-16 | 0.1-21 | 0.1-21 | 0.1-21 |
| 0.6-160 | 0.6-160 | – | 0.6-100 | 0.6-100 | 0.6-160 | – | – |
| 0.16-42 | 0.16-42 | 0.16-26 | 0.16-26 | 0.16-42 | |||
| 1-250 | 1-250 | 1.2-80 | 1-160 | 1-160 | 1-250 | – | – |
| 0.26-66 | 0.26-66 | 0.32-21 | 0.26-42 | 0.26-42 | 0.26-66 | ||
| 2-600 | – | – | – | – | – | – | – |
| 0.53-159 | |||||||
| 3-700 | – | – | – | – | – | – | – |
| 0.79-185 | |||||||
More information: Brochure Kracht VC
Another Article:
- The Technology of Ultrasonic Flowmeter
- Working Principle of Flow Meter
- How to Choose a Flow Meter
- Models and Types of Flow Meter
- Sound Velocity of Material
- Principle Working of Coriolis Mass Flow Meter
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