Common CGT-02 Series User Manual

5
COMMON S.A. CGT-OM-18 february.2018
The gas meter causes a gas pressure drop in the system. The value of the pressure drop of
CGT-02 gas meters at Qmax maximum flow (specified for air at atmospheric conditions,
i.e. at density 
0
= 1,2 kg/m
3
) is specified in Table 2.
In actual conditions, pressure loss p
r
[Pa] is calculated from the formula:
where: 
w
=  / 
0
– relative gas density (related to air) according to Table 1,
p
a
– atmospheric pressure (p
a
 101 [kPa] ),
p – gauge pressure at meter’s inlet [kPa],
Wpd – pressure drop coefficient according to Figure 1.
p – pressure drop at Qmax according to Table 2 [Pa].

·Wpd·p
p
p
p
p
r
a
a



w

Common CGT-02 Series Specifications

General

Brand	Common
Model	CGT-02 Series
Category	Measuring Instruments
Language	English