Product Details
KGD - MQ - 518 Laser Trace Moisture Gas Analyzer
Product Introduction
The KGD - MQ - 518 Laser Trace Moisture Gas Analyzer is a high -
performance optical device for measuring gas humidity. It has
advantages such as high measurement accuracy, fast response speed,
high sensitivity, stability and reliability. It features alarm
output, analog signal output, and rich communication interfaces,
and supports the display of humidity volume ratio and dew - point
value. It is suitable for dew - point detection in cryogenic
processes of natural gas liquid (NGL) recovery units and in the
production of liquefied natural gas (LNG).
Product Features
- Customizable measurement range
- Based on TDLAS principle, long service life, fast response
- Accurate measurement, high sensitivity, stable and reliable
- No refrigeration required, measurement unaffected by background gas
- Supports multiple output methods including analog and digital
signals
- High explosion - proof and protection grades
Technical Parameters
Measured Component | H₂O |
Measurement Principle | TDLAS |
Measurement Range | 0 - 50ppm ~ 6000ppm |
Measurement Accuracy | ±2%F.S. |
Resolution | 0.1 ppm |
Repeatability | ≤1.5%F.S. |
Explosion - proof Grade | Ex db IIC T6 Gb / Ex tb IIIC T80℃ Db |
Protection Grade | IP66 |
Ambient Temperature | -10℃ - 50℃ |
Working Humidity | 0 - 98%RH (non - condensing) |
Working Pressure | Inlet: 140 - 310kPa; Gas cell: 800 - 1200mbar |
Working Power Supply | 24 VDC ±20% or 100 - 240 VAC ±10%, 50/60Hz, 10W |
Communication Interface | RS - 485, 4 - 20mA, Modbus, Ethernet |
External Dimensions (LWH) | 400400250(mm) |
Weight | 36kg |
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.