CGR-04M Rotary Gas Meter

CGR-04 M rotary gas meters are mechanical, volumetric, low-pulsation devices designed for measuring gas volume. The robust, single-chamber, aluminium construction measuring system with new rotor geometry ensure precise measurement, high rangeability, reduced pulsation, and reduced noise level.

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CGR-04 M rotary gas meters are mechanical, volumetric, low-pulsation devices designed for measuring gas volume. The robust, single-chamber, aluminium construction measuring system with new rotor geometry ensure precise measurement, high rangeability, reduced pulsation, and reduced noise level.

The CGR-04M can be uses to measure natural gas with hydrogen mixtures.

The 9-digit counter can be equipped with low frequency (LF) and high frequency (HF) transmitters. As options are available, AFK control contact, LF-BC module registering reverse flow and implement its compensation, ENCODER-module. All of these features allow for simple integration the CGR-04M with external data acquisition systems, volume correctors, and monitoring solutions.

Optionally, the CGR-04M gas meter can be equipped with an internal, self-opening bypass that activity is alerted by the indicator. Bypass protects against rotor blockage in case of malfunction of the main rotors in the measuring chamber.

METROLOGICAL

  • high‑precision measurement across the entire operating range
  • low pulsation measuring device
  • noise level reduction
  • gas explosion group: IIC
  • gaseous fuels: family 1, 2, & 3 acc. To EN 437:2021
  • accepted by Recommendations OIML R 137-1&2

 

OPERATIONAL ADVANTAGES

  • rotatable register assembly, enabling easy reading in any installation position
  • wide range of electrical output options within the register assembly:
    • 2 x LFK low‑frequency reed‑switch transmitters
    • 2 x LFW low‑frequency Wiegand‑sensor transmitters
    • 2 x LFI low‑frequency NAMUR‑standard inductive transmitters
    • 2 x HF high ‑frequency NAMUR‑standard inductive transmitters
    • 1 x ENC‑N encoder transmitter — digital encoder output
    • 1 x LF‑BC low‑frequency transmitter with gas‑flow direction control (F-DIR)
    • 1 x AFK control circuit with a reed contact or normally‑closed open‑collector output.
conformity with the EU Directives

 

Directive 2014/32/EU (MID)

Directive 2014/68/EU (PED)

Directive 2014/34/EU (ATEX)

Directive 2014/30/EU (EMC)

maximal operating pressure Pmax

 

≤ 20 bar(g)

with connections PN16, PN20 , ANSI150

flange: PN16

PN20, ANSI150

nominal diameters DN40, DN50, DN65, DN80
marking of the ATEX compliance II 2G Ex ia IIC T5 Gb

II 2G Ex ia IIC T4 Gb

II 2G Ex ia IIC T3 Gb

II 2G Ex ib IIB T4 Gb

II 2G Ex ib IIb T3 Gb

rangeability 1:50 ÷ 1:400
temperature range -25°C ÷ +70°C    (measured gas)

-25°C ÷ +70°C    (ambient)

accuracy class class 1.0