USM GT400-6P ultrasonic gas meter
Virtual Meter Path Technology ™ (VMPT)
Our flagship meter: Highest accuracy and largest measuring ranges
The GT400 series is the high-end result of continuous product development of ultrasonic meter technology. Already with the market launch of the first RMG ultrasonic meter in 1999, the principle of 6-path measurement was applied for custody transfer metering. In the current 4th generation, the optimum measuring instrument is available for the precise measurement of large flows at high pressures in pipelines and gas transfer stations.
Due to the pressure-resistant design of the sensor technology, a particularly high sound power level is available, which makes the meter insensitive to interference even under critical installation conditions.
Virtual Meter Path Technology ™ (VMPT) is available with all GT400 gas ultrasonic meters. VMPT provides a virtual method of check measurement without adding additional meter components. Additional information about our Virtual Meter Path Technology ™ is available in Tech Note 9 found under our publications page.
Due to the pressure-resistant design of the sensor technology, a particularly high sound power level is available, which makes the meter insensitive to interference even under critical installation conditions.
Virtual Meter Path Technology ™ (VMPT) is available with all GT400 gas ultrasonic meters. VMPT provides a virtual method of check measurement without adding additional meter components. Additional information about our Virtual Meter Path Technology ™ is available in Tech Note 9 found under our publications page.
High measurement accuracy and reliability for use in fiscal and non-fiscal metering
Applicable from atmospheric pressure to high pressure applications
Air calibration with high pressure test according to TR G7
Sensors can be easily replaced on site via plug connections without recalibration
High stability against pre-interference due to 6 direct measuring paths
Operation setting via the RMGViewUSM diagnostic software
Apparatus for measuring the volume of gas in legal metrology
- MID approved by the PTB
- High stability against pre-interference due to 6 direct measuring paths, arranged as X in 3 planes
- Tested according to TR G13 / OIML
- Air calibration with high pressure test according to TR G7
- High flow velocity (up to 40 m/s), therefore the use of smaller nominal sizes is possible
- Fully encapsulated, robust and dirt-repellent titanium sensors
- Sensor exchange possible without recalibration
- Applicable from atmospheric pressure to high pressure applications
- Connection to RMG Flow Computer via RS485 / DSfG instance F
- Operation / parameter setting via the RMGViewUSM diagnostic software
- PTB / MID approved
| Metrological approvals MID, PTB Ex approvals | ATEX / IECEx Ex de, CSA Ex d |
| Max. Operating pressure pmax | 150 bar (higher pressures on request) |
| Max. Flow rate | Qmax from 650 m³/h to 108000 m³/h |
| Nominal sizes | DN 80 - DN 600 as standard (other nominal sizes on request) |
| Measuring range | max. 1 : 270, depending on nominal diameter and operating pressure. See data sheet for details. |
| Connecting flanges | PN 10, PN 16, ANSI 150, ANSI 300, ANSI 600, ANSI 900* (other flanges on request) |
Size and performance data (Standard)
| Nominal diameter DN | Overall length** in mm | Min. volume flow Qmin in m³/h | Max. volume flow Qmax in m³/h | Meter size G |
|---|---|---|---|---|
| 80 (3“) | 240 | 5 | 650 | 160/250/400 |
| 100 (4“) | 300 | 8 | 1000 | 250/400/650 |
| 150 (6“) | 450 | 20 | 2400 | 650/1000/1600 |
| 200 (8“) | 600 | 32 | 4200 | 1000/1600/2500 |
| 250 (10“) | 750 | 50 | 6600 | 1600/2500/4000 |
| 300 (12“) | 900 | 70 | 9400 | 2500/4000/6500 |
| 350 (14") | 1050 | 90 | 11400 | 4000/6500/10000 |
| 400 (16“) | 1200 | 120 | 15000 | 4000/6500/10000 |
| 450 (18") | 1350 | 150 | 19000 | 6500/10000/16000 |
| 500 (20“) | 1300 | 180 | 23500 | 6500/10000/16000 |
| 600 (24“) | 1200 | 260 | 34000 | 10000/16000/25000 |
| 700 (28“)* | 1200 | 420 | 52000 | 10000/16000/25000 |
| 750 (30“)* | 1300 | 460 | 60000 | 10000/16000/25000 |
| 800 (32“)* | 1300 | 550 | 68000 | 16000/25000/40000 |
| 900 (36“)* | 1300 | 700 | 86000 | 16000/25000/40000 |
| 1000 (40“)* | 1300 | 850 | 108000 | 25000/40000/65000 |
*) Nominal sizes > DN 600 on request.
**) For custody transfer metering sections, a straight inlet pipe with 10 x DN length or 5 x DN length with perforated plate rectifier and an outlet pipe with 3 x DN length must be installed.
**) For custody transfer metering sections, a straight inlet pipe with 10 x DN length or 5 x DN length with perforated plate rectifier and an outlet pipe with 3 x DN length must be installed.
Technical Product Information & Software
USM GT400 EN
Leaflet, PDF (3,21 mb)
RMGViewUSMInstaller6.0.0.4
Software, zip (15,3mb)
EU-DoC-USM-GT-400-2024-12-19
Declaration of conformity, PDF (707 kb)
EU-DoC_USM 400-CP_2022-03-18
Declaration of Conformity, PDF (286kb)
Operating & maintenance instructions
RMGView_USM_20_EN
Manual, PDF (3mb)
USM GT400 EN
Manual, PDF (19.8 mb)
If you have any questions:
USM GT400 Ultrasonic Gas Meter
Please contact us if you have any questions or need help. Our employees are always there for you.