Product Details
KGD - WQ - 511 Motor Vehicle Nitrogen Oxides Rapid Detector
Product Introduction
The KGD - WQ - 511 Motor Vehicle Nitrogen Oxides Rapid Detector
uses ultraviolet spectroscopy to continuously measure NO and NO₂ in
real - time. It is equipped with a Beidou navigation system and an
APP software platform, and is specifically designed for rapidly
detecting the concentration of nitrogen oxides in the exhaust
emissions of in - use vehicles under simulated conditions on a
chassis dynamometer or during actual road driving conditions.
Product Features
- Directly measures NO and NO₂ without the need for a NOₓ converter.
- Multi - stage filtration design to prevent contamination of the
measurement gas chamber.
- Compact structure, robust and durable, with low maintenance costs.
- APP software platform for convenient remote online monitoring.
Technical Parameters
Equipment Name | Portable Nitrogen Oxide Analyzer (NO) | Portable Nitrogen Oxide Analyzer (NO₂) | Portable Nitrogen Oxide Analyzer (CO₂) |
Measured Gas | NO | NO₂ | CO₂ |
Measurement Principle | Ultraviolet Spectroscopy | Ultraviolet Spectroscopy | Electrochemistry |
Measuring Range | 0 - 1500ppm | 0 - 1000ppm | 0 - 18% |
Resolution | 1ppm | 1ppm | 0.01% |
Relative Error | ± 4% | ± 4% | ± 3% |
Absolute Error | ± 17ppm | ± 17ppm | ± 0.03% |
Response Time | ≤ 5s | ≤ 5s | ≤ 5s |
Pre - heating Time | 800s | 800s | 800s |
Communication Interface | RS232, Wi - Fi | RS232, Wi - Fi | RS232, Wi - Fi |
Operating Temperature | 5 - 40°C | 5 - 40°C | 5 - 40°C |
Operating Humidity | 5 - 85% RH | 5 - 85% RH | 5 - 85% RH |
Operating Pressure | 86 - 106 kPa | 86 - 106 kPa | 86 - 106 kPa |
Working Power Supply | DC 12V | DC 12V | DC 12V |
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.