Product Details
KGD - WQ - 526 Vehicle Exhaust Flow Analyzer
Product Introduction
The KGD - WQ - 526 Vehicle Exhaust Flow Analyzer uses the
ultrasonic and vortex street principles to measure the flow rate of
diluted motor vehicle exhaust, and employs a zirconia sensor to
measure the concentration of the diluted gas. It is one of the core
components of the VMAS system. It is used to measure the flow rate,
pressure, temperature, and diluted oxygen concentration of the
exhaust gas emitted by gasoline engines of motor vehicles. It
complies with the requirements of the national standard GB 18285 -
2018 "Limits and Measurement Methods for Emissions from Gasoline -
fueled Vehicles (Double - Idle Speed Method and Simple Driving
Cycle Method.
Product Features
- Good measurement stability and high measurement accuracy.
- Fully meets the measurement technical requirements of VMAS
flowmeters.
- Excellent seismic performance, long service life, and is not
affected by vibrations on measurement accuracy.
Technical Parameters
Gas Type | Measuring Range | Resolution | Absolute Error | Relative Error |
Flow Rate | (4 - 12) m³/min | 0.01 m³/min | -- | ± 4% (F·S) |
O₂ | (0.3 - 25)×10⁻² | 0.1×10⁻² | ± 0.1×10⁻² | ± 5% |
Temperature | -30°C - 150°C | 0.1 °C | ± 1 °C | -- |
Pressure | 70.0kPa - 110.0kPa | 0.1 kPa | ± 0.5 kPa | ± 3% |
Zero - point/Range Drift | O₂: ± 2.5%F.S. |
Flow Rate: ± 2%F.S. |
Response Time | Flow Rate: ± 2%F.S., O₂: Relative Standard Deviation Not More Than
1.5% |
O₂: < 5s |
Pre - heating Time | < 3 min |
Relative Humidity | 0 - 95% |
Working Power Supply | AC220V±10%, 50 Hz±1Hz |
Company Profile
Xi'an Kacise Optronics Co.,Ltd. is a professional manufacturer of
measuring instruments , located in China xi’an City. Since 2008,
Xi'an Kacise focused on the development and production of pressure,
level and flow measuring instruments .

We have been specializing in manufacturing pressure, level and flow measuring instruments and related products for 10 years. Based on experienced technical
and management personnel, through efforts of our entire staff, we
have become a professional measuring instrument manufacturer and
solution provider. And we are continuously trying to improve
product quality.

Xi'an Kacise is qualified with ISO 9001-2008, GJB 9001B-2009, CE,
intrinsic safety explosion-proof and isolated safety
explosion-proof certificates, etc. which ensure that our products
comply with international standards.

Kacise sensors have already been exported to America, Spain,
Australia, Chile and 20 other countries and regions, and received
many favorable feedbacks. Our overseas distributers are also
increasing. We regard “reasonable prices, efficient production time
and good after-sales service” as our tenet, and hope to cooperate
with more customers for mutual development.

Our goal is simple: to sell the best products at the best prices,
and provides industry-leading customer service. We personally get
to know each of our customers, and we know how to discover the most
valuable part of our business , to help others achieve their goals.