LGM Reference gas mixer for field use

In both industrial and laboratory settings, there are processes requiring the handling of industrial gases.

One of the most frequent operations is the blending or mixing of two or more input gases from standard gas bottles. In order to do this, industries and labs are equipped with gas handling devices of greater or lesser complexity.

The LGM mixer designed by Gometrics takes a balance gas input and up to 3 standard gases. It comes with an optional battery and a suction hand grip for field use and has an internal pressure sensor to monitor the output pressure of the mixture at any moment. The homogeneity of the mixture is guaranteed by a patented mixing method.

The device allows the user to mix gases in the most suitable form for the application. The instrument can be delivered blind and without keyboard (when operating from PC) or with a simple human-machine interface to allow greater autonomy in field applications.

The LGM incorporates state of the art mass flow control technology.


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  • Accuracy
  • Versatility
  • Ease of use
  • Portable
  • Fast response
  • Easy creation of mixtures
  • Preparation of gas blends (binary, ternary, etc.)
  • Calibration of gas detectors and gas analyzers
  • Linearity studies of gas analyzers
  • Gas sensor characterization
  • Preparation of controlled atmospheres through analisis
  • Research and development
  • Controllable flow ranges per cannel: scale readings maximum of 8 sccm up to 20 slpm
  • Materials in contact: Stainless steal AISI-316, Teflón®, Viton®, Kalrez®
  • Standard: connection up to 4 bottles of different gases and concentration
  • Configuration and control software in PC
Data sheet

Working maximum pressure


Nominal power supply pressure

1 MPa max (10 bar) – 250 kPa min (2,5 bar)


2 standard channels simultaneously active (3 or 4 optionnal)

Supply gas

Configurable gas type, configurable components

Power supply

100-260 VCA, 100W, 50/60 Hz

Materials in contact

Stainless steel AISI-316, Teflón®, Viton®, Kalrez®

Mass flow

Use of mass flow controllers of médium/high performance.
The standard version is delivered with a total of 2 mass flows (1 for balance gas and 1 for reference gas)

Scalable capacity

Maximum output flow (mix)

Up to 20 slpm (air) depending on configuration

Accuracy and repeatability per channel

+/-0.5% reading +/- 0.1% F.E.


a 1/4” o 1/8” NPT Swagelok®
Power supply standard socket


10 kg (aprox.)


250 mm x 210 mm x 370 mm (w x h x d)

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