IRM-1
In addition to the range of turbine gas meters, Elster-Instromet started over two decades ago with the design of rotary gas meters. The biggest challenge was to design a reliable meter, unaffected by installation effects, and for this the unique cartridge was designed. The meter basically consists of a measurement module and a pressure housing, separating the flow measurement from the process. The result is a reliable, high performance meter, with unprecedented flexibility.
| Technical data | Downloads | Special IRM-1G | Special IRM-1S | ||
| Diameter | mm inch |
40 - 100 1½ - 4 |
| Flow range size | metric imperial |
G 16 - G 250 8C - 14M |
| Qmax | m³/h cfh |
25 - 400 883 - 14000 |
| Qmin | m³/h cfh |
0.40 12 |
| Rangeability | 1:20 - 1:250 | |
| Maximum error of reading | Qt - Qmax Qmin - Qt* |
±1 % ±2 % |
| Repeatability | % of reading | < 0.1 % |
| Body material | aluminium ductile iron | |
| Screwed connection | no | |
| Flange ratings | PN ANSI |
16 150 |
| Pressure range | MPa g bar g psi g |
0 - 1.6 0 - 16 absolut 0 - 232 |
| Temperature range (ambient, process) |
-20 to +60 °C | |
| Ingress protection | IP 65 | |
| Index | gradual / continuous standard optional optional |
350 ° universal index compact index multi index ENCODER S1D |
| LF-sensor | standard | 2 |
| HF-sensor | optional | 2 |
| Lubrication | integrated sump |
* Qt = 0.2 Qmax for rangeability 1:20
Qt = 0.1 Qmax for rangeability 1:50
Qt = 0.05 Qmax for rangeability > 1:50
Subject to change without prior notice
High temperature resistant version
| Diameter | mm inch |
40 - 100 1½ - 4 |
| Flow range size | metric imperial |
G 10 - G 250 5C - 15M |
| Qmax | m³/h cfh |
16 - 400 565 - 14000 |
| Qmin | m³/h cfh |
0.35 12 |
| Rangeability | 1:20 - 1:250 | |
| Maximum error of reading | Qt - Qmax Qmin - Qt |
±0.5 % ±2 % |
| Repeatability | % of reading | < 0.1 % |
| Body material | ductile iron | |
| Screwed connection | no | |
| Flange ratings | PN ANSI |
16 150 |
| Pressure range | MPa g bar g psi g |
0 - 0.4 0 - 4 0 - 60 |
| Temperature range (ambient, process) |
standard | -20 to +60 °C |
| Ingress protection | IP 44 | |
| Index | gradual / continuous standard |
350 ° multi index |
| LF-sensor | standard | 4 |
| HF-sensor | optional | 2 |
| HF-proximity sensor | optional | 2 |
| Lubrication | standard | integrated sump |
High pressure version
| Diameter | mm inch |
40 - 100 1½ - 4 |
| Flow range size | metrisch imperial |
G 10 - G 250 5C - 15M |
| Qmax | m³/h cfh |
16 - 400 565 - 14000 |
| Qmin | m³/h cfh |
0.35 12 |
| Rangeability | 1:20 - 1:250 | |
| Maximum error of reading | Qt - Qmax Qmin - Qt |
±0.5 % ±2 % |
| Repeatability | % of reading | < 0.1 % |
| Body material | carbon steel | |
| Screwed connection | no | |
| Flange ratings | PN ANSI |
25 - 100 300 - 600 |
| Pressure range | MPa g bar g psi g |
0 - 10 0 - 100 0 - 1450 |
| Temperature range (ambient, process) |
-10 to +50 °C | |
| Ingress protection | IP 44 | |
| Index | drehbar Standard Option Option |
350 ° universal index compact index multi index |
| LF-sensor | standard | 4 |
| HF-sensor | optional | 2 |
| HF-proximity sensor | optional | 2 |
| Lubrication | oil pump |