IM-RM rotary positive displacement gas meter by Pietro Fiorentini H2 Ready
Rotary Gas Meter

IM-RM Rotary Positive Displacement Gas Meter

A rotary gas meter approved for custody transfer applications with constant and repeatable accuracy. Designed for high-pressure transmission and medium/low-pressure distribution networks. Compatible with non-corrosive, filtered, and dry gases including specialty gases. Hydrogen-ready for NG-H2 blending applications with a dedicated 100% hydrogen version (IM-RM H) also available.

Supplied and supported across Saudi Arabia, the GCC and the Middle East from Al Khobar

H2 Ready
Up to 1,000 m³/h
MID / Custody Transfer Approved

Technical Specifications

Performance
Flow Range (Qmin - Qmax)0.5 - 1,000 m³/h
Nominal Sizes1-1/2" - 6"
Design PressureUp to 25 bar (cast iron PN16: 16 bar; HTR: 5 bar)
Meter TypeRotary Positive Displacement
ApprovalCustody Transfer (MID 2014/32/EU)
AccuracyQmin ≤ Q < Qt: ±2%, Qt ≤ Q ≤ Qmax: ±1% (EN 12480)
Construction
Body MaterialsHard Anodized Aluminum Alloy / Spheroidal Graphite Cast Iron
Operating Temperature-25°C to +55°C
Connections (ANSI)ANSI 150 per ASME B16.5
Connections (European)PN16/25 per EN 1092-1

Applications

Gas Transmission HP
Gas Distribution MP
Gas Distribution LP
City Gates
Non-Corrosive Filtered Gases
Specialty Gases
NG-H2 Blending
100% Hydrogen (IM-RM H)

Key Features

Hydrogen Ready

Compatible with NG-H2 blending. Dedicated 100% H2 version available.

Custody Transfer Approved

Approved for custody transfer applications (MID 2014/32/EU).

Repeatable Accuracy

Constant and repeatable accuracy over time for reliable measurement.

Specialty Gas Compatible

Works with various non-corrosive, filtered, and dry gases.

Frequently asked questions

Where is the IM-RM rotary meter used?

The IM-RM is used in gas distribution systems, district stations, city gates, compressor stations and end users such as chemical and processing plants, gas engines and power generation. It measures filtered, dry and non-corrosive gases, including specialty gases and biomethane, from 0.5 to 1,000 m³/h in DN40 to DN150, with design pressure up to 25 barg.

Is the IM-RM approved for custody transfer?

The flyer states that Pietro Fiorentini rotary meters are approved for custody transfer applications. The IM-RM is designed to EN 12480 and OIML R137-1&2:2012 and certified under the MID, PED and ATEX directives. Accuracy is within ±1% from Qt to Qmax and ±2% below Qt, with repeatability better than 0.1%. Approval in a specific country should be confirmed per project.

Do you supply the IM-RM in Saudi Arabia and the GCC?

Yes. From Al Khobar, Pietro Fiorentini Saudi Industry supplies and supports the IM-RM, including the Twin version with by-pass valve and the IM-RM H for 100% hydrogen, for projects in Saudi Arabia, the UAE, Qatar, Kuwait, Bahrain and Oman. Share your flow range, pressure and flange standard for a quotation.

Need More Information?

Our technical team is ready to help you select the right rotary meter for your application.