Ultrasonic gas meter RSM 200
The RSM200 gas flow meter (RMG Sonic Meter) is based on the innovative ultrasonic transit time difference measurement technology, which has been increasingly replacing turbine meters for high-precision flow measurements of natural gas for several years. The RSM200 is custody transfer approved and allows the determination of operating and standard flow rates with a pressure and temperature measurement.
The RSM200 determines the flow rate, stores it and totals the current totalizer reading. The RSM200 can transmit its values directly via various interfaces (pulse, analog, digital). In addition, the RSM200 offers a full-fledged corrector including pressure and temperature measurement, so that the standard flow rate and standard volume can be determined in addition to the operating flow rate and operating volume. An external corrector is not required. A long-life backup battery ensures operational reliability even in the event of an external power supply failure. Self-sufficient battery operation is possible for the calibration period, i.e. for more than 5 years.
The RSM200 determines the flow rate, stores it and totals the current totalizer reading. The RSM200 can transmit its values directly via various interfaces (pulse, analog, digital). In addition, the RSM200 offers a full-fledged corrector including pressure and temperature measurement, so that the standard flow rate and standard volume can be determined in addition to the operating flow rate and operating volume. An external corrector is not required. A long-life backup battery ensures operational reliability even in the event of an external power supply failure. Self-sufficient battery operation is possible for the calibration period, i.e. for more than 5 years.
MID approved
2 path ultrasonic counter with integrated flow straightener
Compact design
Installation length 3 DN
Measuring range 1:200
No moving parts
Features - RSM 200
- MID approved
- Design according to DIN ISO 17089
- No moving parts
- No inlet and outlet section*
- Integrated, custody transfer meter approved according to EN12405 for volume correctors
- Pressure and temperature measurement, display, output and archiving.
- K-number calculation according to SGERG88, AGA8 GROSS M1/M2 and AGA NX19.
- Display: can be displayed: Operating volume, standard volume, instantaneous and maximum flow rate.
- Terminal compartment - pressure and temperature can be sealed separately from the other electronics.
- Battery or mains operation (power failure-proof) for > calibration period, i.e. > 5 years
- Explosion protection - The RSM200 is intrinsically safe and can be used in zones 1 and 2.
- Pulse output LF and HF, encoder output, alarm output, current output (4-20 mA, optional).
- DSfG F-instance, serial RS 485 interface for Modbus connection.
- Archive - Integrated fail-safe parameter, event and measured value archive.
- RMGViewRSM - Supplied software for convenient parameterization and management of the device and the stored data as well as for remote diagnostics.
- Peak value storage (Qb)
* in case of severe pre-disturbances 2xDN are required
Technical data - RSM 200
| Explosion protection | II 2G Ex ia IIC T4 Gb |
| Protection class | IP 66 |
| Ambient temperature | -40°C - +80°C |
| Media temperature range | -40°C - +70°C |
| Temperature sensor | EDT 87 |
| Print area | 0 - 20 bar |
| Pressure transducer | Digital pressure sensor EDT 96 |
| Power supply | Standard lithium batteries with 3.6 V (service life > 5 years, calibration period) or external power supply |
| Outputs | 4 x digital output |
| 1 x DO or serial encoder protocol | |
| 1 x DO or inverted DO 1 | |
| 2 x DO: Pulse, status, alarm | |
| 1 x analog output 4 - 20 mA (only with external power supply), electrically isolated | |
| Interfaces | RS 485 (Modbus protocol) / infrared serial encoder protocol |
| Operating software | The RMGViewRSM software supplied enables direct access to the measuring electronics with a PC. The most important functions are |
| Readout of all parameters | |
| Changing parameters (with the calibration switch open) | |
| Graphic display of measured values | |
| Creation of test certificates and data sheets and their output in pdf format | |
| Reading out the archives | |
| Export of parameters and archive data in Excel-readable format | |
| Operation is simple, all values are systematically displayed graphically or in clear tables. It is also possible to compile selected measured values and parameters in user-defined tables. |
Measuring ranges - RSM 200
| Nominal diameter DN | Overall length in mm | Min. volume flow Qmin in m³/h | Max. volume flow Qmax in m³/h | Min. flow velocity Qmin in m/s | Max. Flow velocity Qmax in m/s |
|---|---|---|---|---|---|
| 50 (2") | 150 | 1,6 | 160 | 0,23 | 22,64 |
| 80 (3") | 240 | 2,5 | 400 | 0,14 | 22,10 |
| 100 (4") | 300 | 3,2 | 650 | 0,11 | 22,99 |
| 150 (6") | 450 | 8,0 | 1600 | 0,13 | 25,15 |
| 200 (8") | 600 | 13,0 | 2500 | 0,11 | 22,10 |
Technical product information
RSM 200 EN
Leaflet, PDF (2,2 mb)
EU-DoC-RSM200-2023-03-24
Declaration of conformity, PDF (716 kb)
Operating & maintenance instructions
RSM 200 EN
Manual, PDF (22,5 mb)
RMGView-RSM operating software
RMGViewRSMRelease_V2_49
Software (8mb)
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Ultrasonic gas meter RSM 200
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