Oval Wheel Meter OS20 pages

Oval Wheel Meter OS2
for precise measurement of the volume and
flow rate of lubricants, oils and fuels
• Highest quality and precision for almost
all volume and flow rate measurements in
an extensive measuring range
• Robust and compact design
• Simple operation and installation

3 standard designs available:
• as blind version with reed sensors
• with new local indicator type MFE
• MFE1 battery powered
• MFE3 24 VDC, with pulse and current output

Measuring principle
Oval wheel meters are direct volumetric meters. The measuring
element consists of two meshing precision oval wheels which are driven
by the liquid. Therefore, each revolution of the oval wheels transports
an exact quantity of liquid, defined by the geometry of the measuring
chamber, through the meter.

The number of revolutions is directly proportional to the flow quantity.
These are scanned by high-quality reed sensors and evaluated in a
local indicator.

Technical Data
Measuring error

Repeatability
Resolution
Measuring temp.
Ambient temp.
Measuring pressure
Viscosity
Elec. connection

Material

Process connection
Protection class
Ex - protection

+/- 0,5% of measured value with standard calibration
+/- 0.3% of measured value with special calibration
+/- 0.05% of measured value on request
better 0.05%
approx. 100 p/l
-10°C to +90°C (blind version) or up 70°C with local
indicator type MFE
-20°C to + 70°C
16 bar
2 – 2000 mPas
supply
MFE1
battery
MFE3
24VDC
aluminium, hard anodised
aluminium
hardended steel (standard),
stainless steel, if requested
bronze (standard), carbon
bearing:
bushings if requested
fluorcarbon elastomer
gasket:
polyester
MFE housing:
G ¾“ female connection
DN15, PN16, flanged connection
IP 50 (blind version), IP 65 (with local indicator MFE)
not required for blind version (reed sensor)
housing/cover plate:
oval wheels:
axles:

available for MFE 1

Pressure equipment
directive

classification according to pressure equipment
directive 97/23/EG
the OS 2 is suitable for liquids from group 1;
classification according to Article 3, § 3

Application
Applications, e.g. for measuring the volume and
consumption of lubricating oil, hydrocarbons,
fuel oil and hydraulic oil, in power units, burners
and engines, of greases, paints, oil circuits and
oil treatment plants, etc.
The device is suitable for industrial application
due to its robustness and excellent accuracy.
The oval wheel axles are pivoted on both sides,
a feature which enables this meter to function
perfectly during pressure surges, short overloads
or with high viscosities.
Special design with stainless steel axles and
carbon bushings, suitable for measuring fuels,
e.g. petrol, etc.

viscosity
range

(mPa.s)

(l / min)

< 40

> 40

1 – 30

0,05 – 30