Gas Turbine Flow Meter

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Gas turbine flow meters operate on the principle of measuring the flow rate of gases passing through a closed pipe using a turbine rotor wheel. When the gas flows through the meter, it causes the turbine rotor wheel to spin at a speed proportional to the flow rate. This rotational motion is then converted into a flow signal that is displayed on a digital or analog output.

For example. in the oil and gas industry, gas turbine flow meters play an important role in measuring the flow of natural gas, mixed gas, and refined products. These flow meters are accepted in custody transfer applications to accurately measure the quantity of gas being transferred between different parties. They ensure transparency and accountability in transactions, helping to prevent disputes over the amount of product exchanged in each deal .

Gas turbine flow meters are also used in upstream operations, such as monitoring gas flow rates in wells and pipelines. By accurately measuring the flow of gas, operators can optimize production, detect leaks, and ensure the safety of personnel and equipment.

Specifications and flow range : 

Model	Range (m3/h)			Medun Temp.	AmbiertTemp.	Humidity	Nominal Pressue (MPa)	Pressure loss Max. (kPa)
	Error 1%	Error 1.5%	Error 2.5%
LWGQ-15			1.5-7.5	-20 to +120C	-20 to +60C	W95%	6.3	1
LWGQ-25			6-42					0.7
LWGQ-40	8.4-84	8.4-160					1.6 2.5 4.0	0.6
LWGQ-50	16.8-168	16.8-336						0.5
LWGQ-80	34-340	34-680						0.7
LWGQ-100	51-510	51-1020						0.7
LWGQ-150	98-980	98-1960						0.8
LWGQ-200	170-1700	170-2550						0.8
LWGQ-250	230-2300	230-3450						0.8
LWGQ-300	400-4000	400-6000						0.8

Main parameters :

Model | Code				Description
LW				Turbine type Transducer For gas
1 G
1 Q
Nominal Diameter	-15 -25 -40 -50 -80 -100 -150 -200 -250 -300			15mm(PT 1″) 25mm(PT 11/4“) 40mm(Flange) 50mm(Flange) 80mm(Flange) 100mm(Flange) 150mm(Flange) 200mm(Flange) 250mm(Flange) 300mm(Flange)
Accuracy Class		A		2.5%(DN15, DN25) 1.5%(Span 1:15) 1 %(Span 1:10)*
Output			P I T M C	Pulse Analog 4 to 20mA DC Total disply (Battery supply) Pulse,analog 4 to 20mA DC & LCD Auto Compensation(EVC)
C1 Nominal Pressure C2				PN1.0MPa PN1.6MPa
NE Flameproof /EX				No flameproof Flameproof Ex d IIBT4
Option

Installation guidance :

a) Installation Area

The transducer should be used under the operating condition with the measuring medium temperature from -20 to +120℃ and ambient relative humidity no greater than 100%. Avoid installing the transducer in a corrosive atmosphere. Select an area subject to minimumize mechanical vibration or impact shock, minimumize thermal radiation, minimumize magnetic field. If the transducer is subject to the strong magnetic field, it is recommended that shield must be covered on the preamplifier.

b) Installation Direction

The transducer should be installed horizontally. The flow direction of fluids should be in accordance with the arrow point which is on the label of the transducer for indicating the flow direction.

c) Piping

For inevitable reason from installation point of view, install a fluid vibration damping device such as strainer on the upstream side of the transducer. The upstream and downstream straight pipe requirements are generally recommended that the straight pipe 15 to 20 times as long as the inner pipe diameter upstream of the turbine flow transducer and 5 times as long as the inner pipe diameter downstream of the turbine flow transducer. The length of the straightner installed on the upstream and downstream sides of the turbine flow transducer