What is the purge volume for a U6 meter?
0.01m3
Direct purging
| Table 4 – Purge Volumes | ||
|---|---|---|
| Meter | Pipework diameter | PV |
| U6, G4, E6 | <28mm | 0.01m3 |
| U6, G4, E6, U16 and G10 | > 28mm <35mm | 1.5 3 IV |
What is the purge volume of a gas meter?
On large commercial industrial installations, the meter is normally purged by the gas company. For small meters or sub-meters allow five times the volume of gas held in the meter by observing the test dial. This will ensure that no trace of gas, air or inert gas remains inside the gas meter body.
What is purge volume?
Attention: When a volume is purged, it is immediately and permanently removed from the system. All data in the volume is lost.
How much gas does a U6 meter pass?
| U6 | 0 – 65 kW | 6 m³/hr |
| U16 | 66 – 173 kW | 16 m³/hr |
| U25 | 174 – 271 kW | 25 m³/hr |
| U40 | 272 – 430 kW | 40 m³/hr |
| U65 | 343 – 704 kW | 65 m³/hr |
How do you calculate the volume of gas in a pipeline?
The formula for the volume of cylinder is: cylinder volume = π * radius² * height . For a pipe use its length instead of height: pipe volume = π * radius² * length , where radius = inner diameter/2 . The volume of a pipe is equal to the volume of a liquid inside (if a pipe is fully filled with it).
How do you calculate the volume of a gas installation?
Volume of a Gas Pipework
- If the volume of gas in the system is 0.035m3 or less – classified as domestic.
- Installation Volume (IV) = Pipework Volume (Vp) + Fittings Volume (Vf) + Meter Volume (Vm) Pipework Volume (Vp) Volume of Pipework in m3 Tubing Sizes. Volume of 1m Tube. Steel or Stainless Steel. 15mm (½”) 0.00024.
What is the purge volume G4 meter?
Purging Volume
| Meter | Pipework Purge Volumes |
|---|---|
| U6, G4 35mm ≤ pipework > 28mm | 0.01m3 + 1.5 x Vp* |
| E6 35mm ≤ pipework > 28 | 0.0036m3 + 1.5 x Vp* |
| G10, U16 pipework ≤ 32mm | 0.03m3 + 1.5 x Vp* |
| *Vp – volume of pipes and fittings |
What is purge gas?
In fire and explosion prevention engineering, purging refers to the introduction of an inert (i.e. non-combustible) purge gas into a closed system (e.g. a container or a process vessel) to prevent the formation of an ignitable atmosphere. …
What is the max gas flow rate of a G4 U6 meter?
Worcester told me the gas flow rates for both are 3.4m3/hr and 2.59m3/hr.
How does a U6 gas meter work?
The U6 and SC6 meters incorporate a measuring unit with a two litre cyclic volume designed to accurately meter volumes in all natural gas and LPG applications. The U16 uses two of the same measuring unit to cope with larger flows of the same second and third family gases.
How does a 4u6 gas meter work?
Domestic Gas Meters 4U6 Credit Meter Principle of Operation The U6, SC6 and U16 meters are positive displacement diaphragm gas meters with twin chamber measuring units. These chambers are fitted with a gas-tight diaphragm which is driven by the differential pressure between the inlet and outlet of the meter.
What is the correct purge volume for a gas heater?
if your MV+PV+FV=less than 0.02m3 then your purge volume is 0.01m3, if over 0.02m3 than you have to light the gas at the farthest point in the installation or purge in stages making sure the area in wellventilated.
What is the difference between a U6 and a U16 meter?
The U6 and SC6 meters incorporate a measuring unit with a two litre cyclic volume designed to accurately meter volumes in all natural gas and LPG applications. The U16 uses two of the same measuring unit to cope with larger flows of the same second and third family gases. Domestic Gas Meters
What is a U6 SC6 meter?
U6 SC6 The U6/G4 is designed to meter gas usage from pilot light to central heating loads. The U6 is compact, with connection centres at 152 mm (6”), highly reliable, and built to the highest quality standards.