The CGR-04 M is the next generation of mechanical rotary gas meters. Evolving from over a decade of proven reliability, this improved model combines trusted engineering with updated features to meet the complex needs of today’s commercial gas billing and industrial applications. With enhanced performance, increased installation flexibility, and international approvals, the CGR-04 M is ready for the future of metering.
The CGR-04 M rotary gas meter is a precision mechanical displacement meter designed for accurate volume measurement of natural gas and LPG in high-demand environments. Available in multiple sizes (G10 to G250), this meter offers exceptional rangeability and low pulsation performance across a wide range of flow rates. Thanks to its dual installation positions (horizontal and vertical), MID and ATEX certifications, and rugged design the CGR-04 M provides unmatched versatility for both new installations and system upgrades. Whether you’re replacing ageing infrastructure or planning a new metering system, the CGR-04 M offers the peace of mind of a well-established product, now re-engineered to meet the demands of modern networks.
Features and benefits
- Size: from G10 to G250
- Nominal diameter: from DN40 to DN80
- Flow: from 0.25m3/h to 400m3/h
- Maximum rangeability up to 1:400
- Working pressure: 1.6 MPa (MID)
- Temperature range: from -25°C to +70°C
- Working position: horizontal or vertical
- Approvals: MID, ATEX, PED, EMC
- Housing protection class: IP66/67
- Accuracy class according to OIML-R137: 1
Available models
| ND Nominal diameter | Size | Qmax Max Flow | Qmin Min Flow (range) | Qmax/Qmin Range | Vc Cyclic Volume | ∆pmax Pressure drop at maximum flow | B∆p |
| mm | – | m3/h | m3/h | – | dm3 | Pa | kPa |
| 40/ 50 | G10 G16 G25 G40 G65 | 16 25 40 65 100 | 0.3 (0.25(1)) ÷ 0.8 0.3 (0.25(1)) ÷ 1.3 0.3 (0.25(1)) ÷ 2 0.3 (0.25(1)) ÷ 3.2 0.3 (0.25(1)) ÷ 5 | 20 ÷ 60 20 ÷ 100 20 ÷ 160 20 ÷ 250 20 ÷ 400 | 0.16 | 60/55 110/100 225/210 490/470 1200/990 | 0.35 0.83 1.9 4.7 10.5 |
| 40/ 50 | G25 G40 G65 | 40 65 100 | 0.4 ÷ 2 0.4 ÷ 3.2 0.4 ÷ 5 | 20 ÷ 100 20 ÷ 160 20 ÷ 250 | 0.36 | 60/55 100/95 240/230 | 0.82 2.1 4.9 |
| 50/ 65/ 80 | G65 G100 G160 G250 | 100 160 250 400 | 1 ÷ 5 1 ÷ 8 1 ÷ 13 1 ÷ 20 | 20 ÷ 100 20 ÷ 160 20 ÷ 250 20 ÷ 400 | 0.61 | 300/270 850/800 1550/1500 2800/2750 | 4.3 11 26 67 |
B∆p – pressure drop on a damaged gas meter with blocked rotors and an open internal bypass
(1) on special order 0.25 m3/h
