SGD4-G4 Diaphragm Gas Meter


Diaphragm gas meters (hereinafter referred to as the Gas Meters) are designated for measuring the used quantity of natural gas per state standard GOST 5542-2014, vapors of liquefied petroleum gas per state standard STB 2262-2012 and other compatible gases being used for household or manufacturing needs.

Application area: community, recreational and service facilities, residential buildings.

The Gas Meter consists of two chambers which internal cavities are separated by the gas-tight diaphragms. The diaphragms move due to difference in gas pressure at input and output of the Gas Meter and rotate the counting device located on the front panel of the Gas Meter. 

The Gas Meters are divided by:

Gas flow direction:
left, right;

Rated flow:
1.6 – rated flow of dimension type
G1.6; 2.5 – rated flow of dimension type
G2.5; 4 – rated flow of G4 dimension type
U – universal
Distance between the axes of fittings: 110 mm
Cyclic volume: 1.2dm3/turn
Fittings thread: G11/4

Availability of the compensation device which corrects the readings of the counting device depending on the temperature of transmitted gas:
-without the compensation device;
-T – with the thermal compensator.

Availability of additional devices:
-I – with pulse output;
-R – with wireless data transmission channel.

SGD4-x-x-X X I, SGD4-x-x-X X R modifications of the Gas Meters may be integrated into the united system of automatic information collection and processing.

Technical Parameters

Name
Dimension Type
SGD 4-1-x- / SGD 4-1-x-
SGD 4-1-x-
G1.6
G2.5
G4
U
Rated flow rate (Qrated), m3/h
1.6
2.5
4
2.5
Minimum flow rate (Qmin), m3/h, max
0.016
0.025
0.04
0.016
Maximum flow rate (Qmax), m3/h, min
2.5
4
6
6
Permissible pressure loss of a gas meter at rated flow rate (DРQrated), Pa, max
80
Permissible pressure loss of a gas meter at maximum flow rate (DРQmax), Pa, max
200
Permissible basic relative error range within flow rate ranges:
Qmin…0.1 Qrated
above 0.1 Qrated…Qmax inclusive


±3%
±1.5%
Overall dimensions
(LxWxH), mm, max
210 x 175 x 245
Weight, kg, max
2.3
Service life, years
16