Vasthi Instruments

All specification and requirement are conformity with oiml r31 international gas meter standard.

The packing is one carton has six gas meters; 20kg

Pipe fittings are the general names of parts and components that play the role of connection, control, direction change, diversion, sealing and support in the pipeline system. Steel fittings are pressure fittings. According to the different processing technology, it is divided into four categories, namely, butt welding pipe fittings (divided into weld and no weld), socket welding and threaded pipe fittings, flange pipe fittings.

According to the application:
1. pipe fittings for connecting pipes are: flanges, live joints, pipe hoops, clamps, clamps, throat hoops, etc.
2. changing the direction of the pipe: bends, bends.
3. pipe fittings changing pipe diameter: variable diameter (different diameter pipe), different diameter elbow, branch pipe table, reinforcing pipe.
4. pipe fittings with additional piping branches: three links, four links.
5. pipe fittings for pipe sealing: gasket, raw material belt, thread, flange blind plate, pipe plug, blind plate, head, welding plug.
6. pipe fittings for pipe fixing: clasp, hook, ring, bracket, bracket, pipe clamp, etc.

According to the connection :1, welded pipe fittings 2, threaded pipe fittings 3, clamping pipe fittings 4, clamping pipe fittings 5, socket pipe fittings 6, rubber ring connection pipe fittings
According to the material divided into 1, cast steel pipe fittings 2, forged steel pipe fittings 3, alloy pipe fittings 4, stainless steel pipe fittings.
Pipe fittings are widely used in municipal, petrochemical, west-to-east gas transmission, ships and nuclear power.

Inert Gas Flow Meter

Residential Diaphragm Gas Meter
ITRON (MID approved)
Steel Version
Basic Features
3 Compact size: 1.2 dm cyclic volume
Range: G1.6, G2.5, G4
EN 1359 & O.I.M.L compliance
Design
Long -term accuracy & safety
Ready for remote reading & data management
Quality
World-class, ISO9001 certified, European Engineering and
Manufacturing

APPLICATION
The ITRON, with an installed base of over 30 million units, is a
versatile meter that makes it the preferred choice of many large
utilities world-wide.
METROLOGY
The ITRON meets O.I.M.L, EN 1359 and MID (certificate delivered by
the LNE), and more than 25 national metrological standards
(DVGW,NMI Class 1....).
Its design and the careful choice of materials enable the ITRON to
meet the highest demand in international markets in terms of
accuracy and long-term stability.
During the preliminary test controls on the sonic nozzle test benches,
all meters are tested at Qmin, 0.2 Qmax and Qmax.
OPERATING PRINCIPLE
The ITRON is a positive displacement diaphragm gas meter with a
stand-alone twin chamber measuring unit.
The twin chambers are each fitted with a flexible and gas-tight
diaphragm which is moved by the differential between the inlet and
outlet pressure. The Gas enters one side of the diaphragm pan while
on the other side it comes out through a separate port on the valve.
When one side is full, the rotating mono-valve moves on to the next
position, allowing the gas to fill the empty side. A transmission gear
and a mechanical coupling or stuffing box transfer the reciprocating
motion to the mechanical retrofitable index. The measuring unit is
housed in a robust gas-tight casing.
CONSTRUCTION
With its casing in steel, high protection against corrosion is ensured
by 500 hours salt fog spray test resistant cataphoresis treatment. The
aluminum version can withstand up to 1000 hours salt fog spray test.
The extreme strength of the case joint is achieved by rolling the belt &
compressing the flanges into contact with a sealant applied between
the faces. This forms a joint which is both gas-tight and fire- resistant.
MEASURING UNIT
The achievement of the fixed stroke mechanism is the result of
precision and high quality automation, and eliminates the need for an
adjustable tangent. This confines all registration adjustments to the
accessible change wheels behind the index.
The long life synthetic diaphragms, coupled to the well-proven
movement design, combine to give excellent stability and accuracy
during the whole life of the metre.
All materials have been selected for their superior resistance to
chemicals and gas. The valve and the grid, thanks to a special
Bakelite formulation, enjoy high gliding properties and are protected
against premature wear.
Finally, a back-run stop prevents the metre from running backwards
in case of tampering.
INDEX
The metres are available with metric or cubic inch indexes. They
come with a permanent magnet for pulse generation and can be
retrofitted with a pulse transmitter. Ip54 and Ip67 versions are
available for specific environments.
QUALITY ASSURANCE
Quality assurance procedures- such as ISO 9001- and strict controls
throughout the manufacturing process ensure a very high quality
level.
APPLICATION
The ITRON, with an installed base of over 30 million units, is a
versatile meter that makes it the preferred choice of many large
utilities world-wide.
METROLOGY
The ITRON meets O.I.M.L, EN 1359 and MID (certificate delivered by
the LNE), and more than 25 national metrological standards
(DVGW,NMI Class 1....).
Its design and the careful choice of materials enable the ITRON to
meet the highest demand in international markets in terms of
accuracy and long-term stability.
During the preliminary test controls on the sonic nozzle test benches,
all meters are tested at Qmin, 0.2 Qmax and Qmax.
OPERATING PRINCIPLE
The ITRON is a positive displacement diaphragm gas meter with a
stand-alone twin chamber measuring unit.
The twin chambers are each fitted with a flexible and gas-tight
diaphragm which is moved by the differential between the inlet and
outlet pressure. The Gas enters one side of the diaphragm pan while
on the other side it comes out through a separate port on the valve.
When one side is full, the rotating mono-valve moves on to the next
position, allowing the gas to fill the empty side. A transmission gear
and a mechanical coupling or stuffing box transfer the reciprocating
motion to the mechanical retrofitable index. The measuring unit is
housed in a robust gas-tight casing.
CONSTRUCTION
With its casing in steel, high protection against corrosion is ensured
by 500 hours salt fog spray test resistant cataphoresis treatment. The
aluminum version can withstand up to 1000 hours salt fog spray test.
The extreme strength of the case joint is achieved by rolling the belt &
compressing the flanges into contact with a sealant applied between
the faces. This forms a joint which is both gas-tight and fire- resistant.
MEASURING UNIT
The achievement of the fixed stroke mechanism is the result of
precision and high quality automation, and eliminates the need for an
adjustable tangent. This confines all registration adjustments to the
accessible change wheels behind the index.
The long life synthetic diaphragms, coupled to the well-proven
movement design, combine to give excellent stability and accuracy
during the whole life of the metre.
All materials have been selected for their superior resistance to
chemicals and gas. The valve and the grid, thanks to a special
Bakelite formulation, enjoy high gliding properties and are protected
against premature wear.
Finally, a back-run stop prevents the metre from running backwards
in case of tampering.
INDEX
The metres are available with metric or cubic inch indexes. They
come with a permanent magnet for pulse generation and can be
retrofitted with a pulse transmitter. Ip54 and Ip67 versions are
available for specific environments.
QUALITY ASSURANCE
Quality assurance procedures- such as ISO 9001- and strict controls
throughout the manufacturing process ensure a very high quality
level.



Prepaid Gas Meter


Sensus Meters


satndars

Introduction:
Equipped with our companyí»s code controller, base meters are bought abroad to realize the prepaid and control functions, thus to achieve the automatic control of different functions of this new type of gas meter.
Range of application:
This product can be applied to the measurement of gas, natural gas, liquefied petroleum gas and other non-corrosive gases in the city.

Main features:

Automatic prepaid function: charging before using of it, water meter residual capacity= the original gas + newly purchased gas
Auto-control function: switching the gas path automatically according to the payments and gas situation.
Real time computation function: measuring on the real time and display the stock value, closing gas source automatically when the purchased gas is used up.

Power-down memory function: solid state recorder is internally installed and the data will be permanently preserved.

Status display function: displaying the amount of newly charged gas, the remaining stock and cumulative use, as well as low-voltage state etc.

Prompting function: warning when the remaining gas is used to the set value or other functions are out of work.

Overdrawing function: able to set a certain overdraft gas according to the user needs

Automatic alarm function: when the voltage is lower than certain point, alarm system will be operated and the battery must be replaced within 72 hours, otherwise, it will automatically shut down the gas resources.
Anti-gas-larceny function: shut down the gas supply automatically when there are theft of gas or illegal operations
Technical parameter:
1ú¬base meter operation criteriaú¦gb/t6869 q/ofd.001-2007 jjg577-2005
2) current working voltageú¦3.00v
3ú¬cuiescent currentú¦<=12va
4) data holdú¦>=8 years
5ú¬life span of valveú¦switching frequency more than 5000 times
6ú¬accuracy degreeú¦level b
7ú¬four anti-functionú¦anti-attack, waterproof, anti-smoke, anti-knocking

Diaphragm gas meter
Description
Model SY-RQM Diaphragm type gas meter applies to measure the consumption of coal gas, liquefied petrol gas and natural gas. It can also be used to measure the flow rate of are and other gases.
Features
New design, Exquisitely-made; High sensitivity, Accurate metering, Easily-installed and Maintained; quipped with anti-reverse facilities, Adopted advanced surface treatment, Corrosion-resistant, Long operation life, The shell is cast with aluminum-alloy, diaphragm structure. Big digital wheel equipped. The casings for SY-RQM-1.6 & SY-RQM-2.5 are identical

JC040 Vortex Natural Gas Flow Meter
JC-040 series smart precession whirlpool flowmeter uses new microprocessing techn ology with strong function, wide flow range, simple maintenance and co nvenient installation & use. It is widely used in industries such as petrol, chemical, power, metallurgy and coal, etc.
BCST Natural Gas Flow Meter Feature� 
1.� Built-in pressure, temperature and flow sensors with high safety, compact structure and exquisite shape.
2.� Local indication of temperature, pressure, instantaneous flow and accumulative flow.
3.� Use new signal processing amplifier and unique filtration technology, effectively eliminate interfering signal generated by pressure fluctuation and pipeline vibration, greatly improve anti-interference ability of flowmeter, and make good stability of little flow.
4.� Special time indication and real-time data storage function; under no circumstance will the internal data be missing and will be stored forever.
5.� Password protection
6.� Low power consumption, internal battery supply, no need for external power supply.
If you want to know more about this product, you can click the link below
1. Specification, basic data and performance

Product Introduction
The wet gas flowmeter is a volumetric gas flowmeter. Its measurement range ranges from 0.016L/min for small flow to 200L/min for large flow. It has high accuracy, no leakage, and good stability. It is suitable for gas volume or flow measurement in laboratories, research institutions, environmental measurement, production sites, etc. It can also be used as a transmission standard and working standard, and is widely used in gas appliances, energy, chemical industry, environment, medicine, calibration and other industries. The products have been exported to Europe, America, Asia and other countries and regions.
� 
Product Features
1. Extra-wide flow range 1:300
2. Repeatability better than 0.1%
3. Intelligent correction (Volume and flow rate automatic correction)
4. Various automatic measurement methods (constant volume output, timing output, and fixed whole revolution output)
5. Full digital flow meters (Temperature, Pressure, Volume, High-precision measurement of flow, RS485 Bus Communication)
6. Intelligent wire control start and stop
7. Each is strictly calibrated with � 0.05-stage active piston prover to ensure accuracy
8.� No leakage (using advanced magnetically coupled transmission technology, non-oil seal)
� 
Precision (Repeatability)
Standard Flow Range: �± 0.1% (Standard deviation)
Entire Flow Range: �± 0.15% (Standard deviation)
� 
Material (Anti-corrosion)
304 stainless steel
316 stainless steel (customized)
Temperature measurement: 0-50
Pressure measurement: 0-10kPa