OEM Available
Environmentally Friendly Stainless Steel Gas Meter Calibration
Device
Basic
Infor.
|
Type
|
Gas Flow
Device
|
Warranty
|
1
Year
|
|
Caliber
|
DN15-DN300
|
After-sale
Service
|
Free
after-sale Service Support
|
|
Measurement
flow range
|
0.06
m³/h~15000 m³/h
|
Expanded
uncertainty
|
0.25%,0.3%(k=2)
|
|
Test qty
for one time
|
1pcs
|
Relative
humidity
|
40%~80%
|
|
Atmosphere
pressure
|
86~106kPa
|
Ambient
temperature
|
0~50ºC
|
|
Work
Pattern
|
Vacuum
Pump
|
Material
|
Stainless
steel 304
|
|
Voltage
Output
|
380V/220V
|
Transport
package
|
Standard
Export Package
|
|
Production
Capacity
|
800
pieces/year
|
Customized
|
Customized
|
|
Flow
Stability
|
<0.1%
|
Trademark
|
TNMA
|
|
Origin
|
China
|
|
|
Product
Description
1.The
sonic nozzle method gas flow standard device is a gas flow
standard device (negative pressure method) with a
critical flow venturi nozzle as the main standard device.
2.All stainless steel pipe,long service time can be
achieved.
3.the critical flow venturi nozzle, is designed and
manufactured by our company based on the standard of ISO
9300:2005 "Measuring gas flow with critical flow venturi
nozzle", and has been verified/calibrated by the national legal
metrology agency.
4 The device can be used to detect various calibers and various
forms of gas flow meters.
Standards
1.JJF1204-2010
"Critical Flow Venturi Nozzle Method Gas Flow Standard Device
Calibration Specification"
2.JJG 643-2003 "Standard Meter Method Flow Standard Device
Verification Regulation"
3.JJG620-2008 "Critical Flow Venturi Nozzle Verification
Regulation"
4. JJG633- 2005 "Gas Positive Displacement Flowmeter
Verification Regulations"
5.JJG1030-2007 "Ultrasonic Flowmeter Verification
Regulations"
6.JJG1029-2007 "Vortex Flowmeter Verification Regulations"
7. JJG1037-2008 "Turbine Flowmeter Verification
Regulations"
overview
The
LNQ sonic nozzle method gas flow standard device mainly
consists of a Venturi sonic nozzle,
a
vacuum pump unit, a control gas
circuit, a test pipe circuit, sensors and control systems,
and calibration
testing software systems. The Venturi
sonic nozzle has several advantages such as a simple
structure,
stable performance, high accuracy, no
moving parts, easy maintenance, and a long calibration cycle
(five
years).
During operation, the gas to be
measured passes through a muffler, the meter under test, and
then enters
a
surge tank. It then flows through the sonic nozzle and
control valve into a buffer tank before
being
discharged into the atmosphere through
the vacuum pump unit. When the gas flowing through the
sonic
nozzle reaches the critical state, the
mass flow rate passing through the meter under test and the
nozzle
remains constant. Therefore, the flow
rate through the sonic nozzle is constant within a given
time
interval, and the system receives
signals from the gas meter, such as sampled signals,
temperature,
pressure, humidity sensors, and
calculates the error of the meter under
test.
The
device can receive various signals such as current, voltage,
and pulses in real-time. It can also use
a
dynamic image processor or
photoelectric sampler for automatic sampling of the meter
under test,
enabling dynamic
measurement.
Certificates
Honors
of TNMA
Software
Copyright
Utility
Models Patent Certificates
Our Clients
Non-Standard Customized Products
Piston Type Circulating Real
Flow Gas Flow Experiment Device
Sonic Nozzle Method Gas Flow
Standard Device
1000L Piston Type Gas Flow
Standard Device
Standard Meter Method Gas
Flow Standard Device
Gas Meter Temperature
AdaptabilityDetection
Device and Other Gas MeterType Evaluation Test Equipment
Why Choose
TNMA
1. Strong R&D Ability
As
a professional manufacturer of metering calibration equipment
for gas meters, water meters and various flow meters, our
company has a group of technicians who are professionally
engaged in the research of flow measurement technology. They
have long been committed to the field of flow measurement and
control. And the scientific research institute has a good
cooperative relationship to ensure the leading position of the
companys products in this
industry.
2.Strict Quality Management System
Our company implement rigorous quality control processes to
ensure that all products or services meet set standards. This
results in high-quality deliverables and satisfied
customers.All the ready products will be tested before
shipment and will provide test report.
3.Accurate Delivery Time
We have stable stock to avoid any delay of shipment.We are
always put customers requirements at the first place. We try
our best to avoid any inconvenience for our
customers. With advanced
technology and streamlined processes, we can provide fast and
efficient calibration services for you.
4.Customer Service and Support: As a
professional manufacturer, we provide comprehensive customer
service and support, helping customers to troubleshoot issues,
access technical assistance, and receive training on how to use
your equipment effectively.
5.Innovation and Leadership: Finally, as a leading
manufacturer in this field, we are constantly innovating and
improving your equipment, whether through new technology or by
partnering with other industry leaders. This helps to ensure
that our customers have access to the latest and most effective
calibration solutions, keeping them ahead of the curve in
utility measurement.
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