Product Details
KGD - WQ - 520 Ultraviolet NOₓ Emission Analyzer is used for low -
emission detection of vehicle exhaust.
Product Introduction
The KGD - WQ - 520 Ultraviolet NOₓ Emission Analyzer is a new -
generation nitrogen oxide analyzer independently developed based on
ultraviolet absorption spectroscopy gas analysis technology. With a
unique algorithm and a high - precision straight - through short
gas chamber, it has strong anti - interference ability and high
measurement accuracy, meeting the measurement accuracy requirements
of grade 00 in GB 3847 and GB 18285 standards.
Product Features
- Adopts ultraviolet absorption spectroscopy gas analysis technology
to reduce gas cross - interference.
- The sampling flow has basically no impact on the measurement of NO
and NO₂, and the instrument has strong anti - interference ability.
- Has a low detection limit to meet the needs of low - emission
detection of vehicle exhaust.
- An internal automatic zero - adjustment air pump is installed to
achieve automatic air zero - adjustment.
- Has a self - diagnosis function to check the working status of the
sensor online.
- Equipped with a communication interface for easy data transmission
and integration with other exhaust gas analysis equipment.
Technical Parameters
Measured Components | NO, NO₂ |
Measuring Range | NO: (0 - 4000) ppm; NO₂: (0 - 400) ppm |
Precision | ± 2%F.S. |
Response Time | T90 ≤ 30s |
Ambient Temperature | (5 - 40) °C |
Ambient Pressure | (86 - 106) kPa |
Relative Humidity | ≤ 85% |
Electrical Parameters - Communication | RS - 232/RS - 485, (4 - 20) mA |
Electrical Parameters - Power Supply | Rated voltage 220V ± 22V; Frequency 50Hz ± 1Hz |
Display | LCD display |
Alarm Output | Passive contact signal |
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.