The rotary gas meters are positive displacement meters, designed to measure quantity of gas, for custody transfer or technical measurement applications. The devices are mainly applied for gas flow ranges from 0.2 up to 650 m³/h, and the pressure range up to 20 bar.

• Inline gas meters with wafer connections to suit PN16 flanges, ANSI 150 alternative
• Fitted with low frequency pulse output as standard
• Aluminium body, suitable for natural gas and LPG, -20°C to +60°C
• Nominal rangeability 1:50, Meters read in cubic metres, index can be head rotated through 360°

The Dresser Meter is designed to measure the volume of gases and gas mixtures with a high degree of accuracy. The industry accepted rotary positive displacement operating principle ensures permanent, non-adjustable accuracy by using precision machined two-lobe impellers encased within a rigid measuring chamber.

Dresser Meters are recognized for highly accurate measurement from Qmin to Qmax. The meter’s rangeability, the ability to measure gas over a wide flow range within a specified accuracy, provides the best over-all measurement accuracy on a “day-after-day” basis, not just laboratory testing. Our meters are designed to provide accurate gas measurement over widely fluctuating flow, pressure, and temperature conditions.

Unlike other meter types, measurement accuracy is not affected by changes in specific gravity, pressure, or fluctuating flow. Dresser Meters may be used from a few ounces up to full capacity of the meter’s maximum pressure rating with highly accurate measurement over a wide operating range. This equates to a lower total cost.

Principle Features:

• Full range of meter sizes from G16 through G1000
• High Pressure meter sizes from G16 through G100
• Permanent Metrological repeatability
• Accuracy independent of gas specific gravity, line pressure, or fluctuating flow
• Flange Classes ANSI #150 FF 2” to 8” or PN 16 FF in pipe sizes DN40 to DN200
• Temperature range: -40°C to +70°C
• Permanently lubricated, maintenance free gear reduction Accessory Units
• Euro Counter: 355° rotateable index with LF Pulser, Optional HF pulser available upon request
• Series 3 – numerous types available
• MID Certified

Dresser Series C Rotary Meter

GE Energy’s innovative Dresser Series C Rotary Meter helps reduce installation and maintenance costs while improving measurement accuracy by utilizing advanced components and manufacturing technology.

Series C Design Features:

• Compact size and lower weight
• High performance rotor (impeller) profile for increased range ability
• Superior strength ensures reduced sensitivity to pipe stress
• Decreased susceptibility to damage from pressure shocks
• Simplified maintenance and repair
• Multi-functional index

Elster RABO Rotary Gas Meter

The advantages of a Rotary Gas Meter over Diaphragm or Turbine Type:

• Compact size
• Low pressure drop
• High accuracy
• Ease of installations
• No straight lengths of pipe required
• Excellent Turndown
• Immune to pulsating loads
• No change of accuracy with increase in operating pressure

Design innovations for the new Elster RABO range:

• Reduced overall dimension while enlarged volume of measuring chamber
• Reduced pressure loss due to enlarged chamber volume
• Robust Impeller design. Short Impeller shafts
• Usage of permanent-lubricated ball bearings
• Rotatable Index on Meter front, to allow vertical or horizontal installation
• Several Index variants as i.e. S1 Index, ABSOLUTE-Encoder
• Environmental friendly “Hard Coat“ Surface
• Increased cyclic volume for reduced pressure drop
• Lower piston speed for low-noise operation
• Short housing depth for short wall spacing
• Harmonization of the permitted temperature range to MID/PED/ATEX (-25 to 70°C)
• Available in 32mm and 40mm sizes (G16 – G65)

Commercial & Industrial Rotary Meter. Delta meters are volumetric meters. The flow of gas moves the pistons and each rotation traps and transfers a specific volume of gas. The movement is mechanically transmitted to the totaliser through the magnetic coupling.

Key Features

• Flow rate: From 0.25 m3/h to 1000 m3/h, G10 to G650
• Nominal Diameters: DN 25 to DN 150 (1” to 6”)
• Maximum Working Pressure: Up to 100 bar depending on the body material and flanging
• Body Materials: Aluminium, ductile iron or steel. Compliant with the Pressure Equipment Directive 97/23/EC
• Temperature Ranges:
  • ATEX/PED: -30° C to +60° C
  • MID: -25° C to +55° C
  • Storage temperature: -40° C to +70° C
• Metrology: In accordance with MID and OIML, large rangeability up to 1:200. Compliant with the Measuring Instrument Directive 04/22/EC
• Intrinsic Safety Approval: L.C.I.E. 06 ATEX 6031 X – Compliant with the Directive 94/9/EC.

Itron Rotary meter Delta QD

• Delta QD volumetric meters
• High accuracy and rangeability meter
• Very low pressure loss
• Protection class IP67
• ATEX Directive 94/9/EC (Intrinsic safety level: II ½G Ex ia IIC T5 c T6)
• Standard pulse output