CGT Turbine Gas Meters

CGT50 – CGT300

The turbine gas meter measures the quantity of gas basing on the flow principle. The gas flows through an integrated flow conditioner, which distributes the flow proportionally in the annular slot and guides it to the turbine wheel. The wheel is driven by the gas flow, and the angular velocity of the rotation is proportional to the gas flow rate. The rotary motion of the turbine wheel is transferred mechanically by gear wheels, and the incorporated gas tight and hermetic magnetic coupling, to the index unit, mounted on the top of the body, and shows the volume on the totaliser.

The basic components of the COMMON CGT series turbine gas meter are as follows:

Pressure resistant meter body (1)
Inlet flow conditioner (2)
Measuring cartridge with the turbine wheel (3)
Magnetic coupling as the transferring element between the measuring cartridge and the index head (4)
Index head, IP67 protection class (5)
Lubricating system (some meters may be provided)

At a glance

Fitted with low-frequency pulse output as standard
Flanged PN16 connection
Cast Iron or Carbon Steel, suitable for natural gas and LPG -20 to 60C
Inline turbine gas meters with flanged PN16 connections, PN25, PN40, ANSI 150, 300.600
For horizontal or vertical pipelines with 2 x DN straight lengths
Rangeability 1:20, Meters read in cubic meters, index can be head rotated through 360 degrees

Features

Pressure rating: PN10 ÷ PN110 & ANSI150 ÷ ANSI600
Nominal diameter: DN50 up to DN400
Meter bodies: ductile cast iron or steel
Flow: 6.5 to 10 000 m3/h
Rangeability: 1:20 min at atmospheric pressure (increased rangeability on request)
Upstream pipe: minimum 2 x DN
Temperature range:
– gas temperature -20°C to +60°C
– ambient temperature -25°C to +70°C
Operating position: horizontal or vertical
Measurement accuracy according to EN12261
standard: 0.2Qmax ÷ Qmax < ±1%
Qmin ÷ 0.2Qmax < ±2%
improved accuracy on request
Approvals:
– MID
– PED
– ATEX
Traceabilty to PTB standards