MBL 500 Meter Run 

Construction

For small diameters less than DN 50 (2"), 
meter runs should be used. 

Meter runs and orifice plates with ring chamber
taps are provided with calibrated inlet and outlet
pipes. 

The two-part carrier-ring, to DIN 19205 has an 
exchangeable plate. This can be supplied as 
an orifice plate DIN 1952, quarter circle nozzle or 
as a double cone orifice plate, according to need.

 
In some cases a standard venturi tube can be used.
The rings and plate have a flat sealing surface, the
material of which is suitable for the medium and 
conditions prevailing. 

The meter runs are delivered 
fully assembled and ready for installation, 
with welded or flange ends.

Technical details

Nominal pressure: PN 6 (150 Ibs) to PN 100 (1500 Ibs)

Nominal diameter: DN 10 (1/2U) to DN 200 (8U)

Installation length: See table overleaf

Bore diameter: The calculation will made by us from the data supplied, considering the relevant standards and regulations.

Calibration: When particular accuracy is required, the calibration 
can be carried out on a test bend, where by empirical means
the flow-rate coefficient "alpha" can be determined 

Pressure loss: The remaining pressure loss depends upon the ratio of d2 : D2,
some 30 -80% with orifices and 10 -15% of the dynamic
pressure with venturi tubes and is given in the data sheet.

Pressure taps: These are described in sheet A6
Installation: Type MBL 500 F
Between flanges on horizontal, vertical or diagonal pipelines.
(Counter flanges, screws and seals are not normally supplied
Type MBL 500 E
for welding on horizontal, vertical or diagonal pipelines


Advantages

Taking accurate measurements in small bore pipe runs are often difficult, as the installation itself creates interference. This construction , inlet and outlet pipes 
forms a ringchamber, and lead to the orifice without obstruction. The use of calibrated pipes allows an exact value for the inner tube diameter and surface, and the range of
measurement can be altered by simply exchanging the orifice plate.

Download the Datasheet as PDF File appr. 500 kB