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Vortex meter type RWG / RWBG

Wafer stainless steel meters for gas

Racine Vortex Zähler RWG
  • High accuracy
  • Low pressure drop
  • HART® communication protocol
Medium:
Gas
max. flow:
from 1 up to 13420 l/min
Temperature:
from -28 up to 182 °C
max. pressure:
from -1.34 up to 18.2 bar
Branch:
Water & waste water industry, Oil industry, Gas industry, General industry
Vortex meter type RWG / RWBG
Vortex meter type RWG / RWBG

General information

The models RWG and RWGB are designed for high accuracy and extremly low pressure drop. There are no moving parts necessary and after installation there is nearly no need of maintenance. The models RWG are usable for most of gases.

Type RWBG has a similar construction and is ideal for use with digester gas applications as p. e. CH4 + CO2 mixtures. Meters of this series are built with two-wire technology with standard HART® communication for easier programming and system integration.


Technical data

MediumGas/digester gas
Flow range0,1 – 7,5 to 9,5 – 280 l/s
Accuracy±1 % of reading over the upper 90 % of the flow range
Repeatability0,5 % of reading
Output signal2-wire, 4 – 20 mA loop
Input power24 VDC
CertificationCE: EN61326-1:2002
Optional: ATEX II 2G Ex ib IIB T4 Zone 1 Group IIB T4 and AEx ib IIB T4


Measuring principle

Vortex meters


Vortex meters

Within the flow meter as flowing media moves across the strut or "bluff bar" vortices are also shed, but on a smaller scale. The meter transmits an ultrasonic beam through the vortex pattern downstream of the strut. As vortices are shed, the carrier wave of the ultrasonic signal modulates. The modulation of the carrier wave is measurable and proportional to the number of vortices shed. Digital processing enables the vortices to be counted, and this value is converted into a velocity.


Do you have questions on this product?

Your contact person:

Badger Meter Swiss AG
Mittelholzerstrasse 8
CH-3006 Bern