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  • USM GT400

USM GT400 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.
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
Ultraschallgaszähler USM GT400
Metrological approvals MID, PTB Ex approvalsATEX (Exd), IECEx, CSA
Max. Operating pressure pmax100 bar (higher pressures on request)
Max. Flow rateQmax from 650 m³/h to 108000 m³/h
Nominal sizesDN 80 - DN 600 as standard (other nominal sizes on request)
Measuring rangemax. 1 : 270 depending on nominal diameter and operating pressure
Connection flangesPN 10, PN 16, ANSI 150, ANSI 300, ANSI 600 (other flanges on request)
LoremLipsum
Size and performance data (Standard)
Nominal diameter
DN

Overall length**

in mm

Min. volume flow

Qmin

in m³/h

Max. Flow rate

Qmax

in m³/h

Meter size

G

80 (3“)

2405650

160/250/400

100 (4“)

30081000

250/400/650

150 (6“)

450202400

650/1000/1600

200 (8“)

600324200

1000/1600/2500

250 (10“)

750506600

1600/2500/4000

300 (12“)

900709400

2500/4000/6500

400 (16“)

120012015000

4000/6500/10000

500 (20“)

150018023500

6500/10000/16000

600 (24“)

120026034000

10000/16000/25000

700 (28“)*

120042052000

10000/16000/25000

750 (30“)*

150046060000

10000/16000/25000

800 (32“)*

150055068000

16000/25000/40000

900 (36“)*

150070086000

16000/25000/40000

1000 (40“)*

1500850108000

25000/40000/65000

LoremLipsum
*) 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.
Technical Product Information & Software
USM GT400 EN
Data Sheet, PDF (1,6mb)
RMGViewUSMInstaller5.0.21.10
Software, zip (13,3mb)
RMGViewUSMInstaller6.0.0.1_beta
Software, zip (14,8mb)
EU-DoC_USM-GT-400_2022-04-11
Declaration of Conformity, PDF (4,94mb)
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 (4,4mb)

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.
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RMG Messtechnik GmbH
Otto-Hahn-Straße 5 35510 Butzbach Germany
+49 6033 897 0