Tel: +44 (0)1268 526161

Allison Engineering

Innovative Solutions for
Process Control

Gas Mass Flow Meters



The ST51 is an ATEX certified thermal mass flow meter for Biogas, Compressed air and Natural gas. It is available ex stock and prices start at £1,400 (ea).

The ST51 is easy to install, fully programmable, and can be inserted and removed “live” with a standard full bore ball valve.

It features an optional LCD display of flow rate and total flow and communicates via two 4-20mA signals and a pulsed output.

Comply with the latest OFGEM RHI regulations for gas flow measurement to Waste Gas burners, Flares & CHP units.

Key Features

  • ATEX certified
  • 316 st/st wetted parts
  • Process temperatures up to +121°C
  • Pipe sizes from 1 ½” 36”
  • 2 x 4-20mA and pulsed outputs
  • LCD display of flow rate and total flow