Industrial Fixed ATEX NH3 Ammonia Gas Detector 4-20mA RS485 Modbus for Refrigeration Cold Storage
Brand Yongan Electronics
Product origin Wuxi, Jiangsu Province
Delivery time 1-20piece(7-10 days) ;20~100piece(15-25 days)
Supply capacity Annual Production Volume 10,000+
IP65 protection Fixed ammonia detector provides continuous 24/7 monitoring, can be integrated into plant control systems (PLC/DCS), and supports remote data management.
As a highly efficient and eco-friendly industrial refrigerant, ammonia is widely utilized in large-scale cold storage facilities, frozen food warehouses, beverage production lines, and similar applications. However, in the event of a leak, ammonia gas can rapidly accumulate to hazardous concentrations within confined spaces. Fixed-point detectors are typically installed directly above potential leak sources; each refrigeration unit must be equipped with a dedicated gas detector, which is interlinked with an emergency exhaust fan. Should the detected ammonia concentration reach a pre-set alarm threshold, the system automatically activates the fan to exhaust and evacuate the toxic gas from the indoor environment.
Product Specification Sheet:
Model Number | WMKY-2000 |
Certificate | CNEX ATEX CE、ISO9001 ISO14001 |
Prodect Name | NH3 gas detector |
Detection Range | 0-100ppm,0-200ppm,0-1000ppm |
Measuring principle | Electrochemical Principle |
Power Supply | 24VDC |
Language Support | English |
Alarm Type | Sound and light alarm |
Qutput Signal | 4-20mA+2 Relay or RS485+2 Relay |
Display | LED display |
Operating Temperature | -10~55℃ <95%RH(No condensation) |
Explosion-proof Level | Ex db IIC T6 Gb |
Protection Level | IP66 |
power | 1.5W |
Warranty | 12 months |
Product advantages:
1.Comprehensive Certifications: ATEX explosion-proof certification, CE certification, ISO 9001, ISO 14001, and ISO 45001—ensuring full compliance and qualification.
2. Professional Technical Support: Our technical engineers engage directly with clients to assist with gas sensor selection, alarm threshold configuration, and compatibility issues across various gas types.
3. Rapid After-Sales Response: In the event of a quality issue, our technical engineers will immediately diagnose the root cause of the fault and promptly arrange for a replacement shipment or provide a corrective solution.
4. Brand Customization: We offer customization services, including the integration of your company logo and name.
Enterprise Advantages
Company Introduction:

Wuxi Yong'an Electronic Technology Co., Ltd., established in 2011 and headquartered in Wuxi, China, is a high-tech enterprise integrating design, R&D, production, sales, and service. We have been deeply involved in the fields of safety monitoring equipment, industrial instruments, and industrial environment for 15 years. Adhering to the concept that "science and technology are the primary productive forces," we are committed to providing global customers with high-quality products and services, offering one-stop solutions. We serve over 200 international clients in 30 countries. We have a 1000-square-meter production base, a professional team of 100 people, and strictly implement the ISO9001 quality management system. From pre-sales consultation and sample confirmation to after-sales follow-up, we provide dedicated customer service to ensure worry-free procurement.
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FAQ:
Q1:What detection principle does the ammonia gas detector ? What is its detection range?
Industrial NH3 detector employs an electrochemical detection principle.
The standard detection ranges for the ammonia detector are 0–100 ppm, 0–300 ppm, and 0–1000 ppm; if a customized detection range is required, please contact our technical team for confirmation.
Q2:What certifications do your ammonia leak detector have? Are Toxic Gas Detector approved for international markets?
We fixed wall mounted NH3 detector provide:
ATEX (EU) and CNEx (China) explosion-proof certifications
CPA (Metrological Approval) certificate
CE certificate
Q3:Can your Fixed NH3 Monitor integrate with our existing control system (PLC, DCS, BMS)?
Yes, combustible gas detectors offer multiple output signal options for seamless integration
4-20mA analog signal (standard industrial protocol)
Output through our controller RS-485 Modbus for digital communication and remote monitoring
Relay contacts (dry contacts) for direct control of alarms, fans, or solenoid valves
Q4:What's Wastewater Treatment Plant NH3 Gas Detector the IP rating?
Standard models: IP65 (dust-tight and protected against water jets)
They are designed to operate in -20°C to +50°C temperature ranges and environments, making them suitable for outdoor installations, chemical plants




