Product Details
Refrigerant Gas Sensor KGD - AM - 204
Product Introduction
The KACISE NDIR refrigerant gas sensor KGD - AM - 204 developed by
KACISE Optoelectronic mainly targets A2L gases, such as R32, R454A,
R454B, R454C, and R290. Based on NDIR (Non-Dispersive Infrared)
technology, the KGD - AM - 204 can detect and monitor refrigerant
leakage and provide early warnings. It has the advantages of fast
response speed, high precision, and good long-term stability. This
sensor is developed using standard gases and is effectively
calibrated through KACISE 's own calibration technology. It is
widely used in the detection or monitoring of refrigerant leakage
in commercial/transportation/industrial refrigeration, automotive
air conditioning, commercial air conditioning, heat pumps, and
other fields.
Product Features
- Provides a variety of A2L and A3 gases (R32, R454A, R454B, R454C,
R290).
- Measurement range of refrigerant gas: 0-100% LFL.
- High precision, with high detection accuracy within the full
temperature and humidity range.
- Advanced automatic baseline calibration mechanism, eliminating the
need for on-site calibration.
- Fast response speed and a service life of up to 15 years.
Technical Parameters
Measured Gas | R32/R454A/R454B/R454C/R290 |
Measurement Range | 0-100%LFL |
Accuracy | ±2.5%LFL@0%~25% LFL ±10% of the reading@25%~100%LFL Alarm point:
15%LFL |
Resolution | 0.1% LFL |
Response Time | T90≤30s |
Output | RS485 Modbus |
Operating Conditions | -40 ~ 85°C, 0~95%RH (without condensation) |
Storage Conditions | -40 ~ 85°C, 0~95%RH (without condensation) |
Power Supply | 5+0.5V Dc, ripple wave≤100mv |
Operating Current | Average current ≤ 380mA Peak current < 550mA |
Service Life | 15 years |
Dimensions | 76.8 * 59.2 *19.5mm (customizable) |
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.