Ammonia Explosion-proof Detection Alarm

The ammonia explosion-proof detection alarm from Shandong Ruihua Refrigeration Equipment Co., Ltd. is a fixed gas detection instrument designed for continuous monitoring of ammonia concentration in industrial environments where flammable or toxic gas hazards exist. The unit carries an explosion-proof grade of Ex d IIC T6, indicating flameproof enclosure suitable for hydrogen-bearing gas groups and surface temperatures not exceeding 85 °C. It outputs a standard signal compatible with PLCs, DCS, and dedicated alarm controllers, enabling integration into existing building management or process safety systems. Detection range and sensor type are not stated in the source data and must be confirmed directly with the supplier.

The device employs a two-stage alarm with programmable set points, triggering both audible and visual alarm indicators when detected concentration exceeds configured thresholds. An infrared remote controller provides non-intrusive access for zero calibration, alarm point adjustment, and address modification, reducing the need to open the explosion-proof enclosure in hazardous areas. Self-calibration capability is built in, with three standard keys for on-site maintenance. The unit can drive external equipment through one or two relay outputs, typically used to activate ventilation fans or shut solenoid valves on ammonia supply lines. Response time (t90), sensor operating life, and accuracy specifications are not provided and should be requested during technical review.

Primary applications include cold storage facilities, ice manufacturing plants, chemical process areas, and food processing installations where ammonia serves as the refrigerant. The alarm is intended for wall or pipe mounting in zones where ammonia leakage poses explosion or toxicity risk. Buyers should confirm sensor technology (electrochemical or semiconductor), detection range in ppm or percent LEL, ingress protection rating, and power supply requirements. No MOQ, unit price, packaging, or lead time is stated in the listing, so all commercial terms require direct negotiation with the supplier.

Shandong Ruihua Refrigeration Equipment Co., Ltd. is located at Wenquan Road, Jiuqu Sub-District Office, Hedong District, Linyi City, Shandong Province, China, with registered address at No. 55, Tianjun Business Street. The supplier holds a harbour trust tier classification on the platform. Response rate is recorded at 0.00 percent with zero average response hours, indicating no historical transaction or inquiry data is available through this channel. Buyers should treat this as an unverified engagement and conduct independent due diligence.

The company operates in the refrigeration equipment sector, with this detection alarm representing its safety instrumentation offering. No certifications beyond the stated explosion-proof grade, no factory size, employee count, revenue, or client list are provided. The listing does not indicate ISO 9001 quality system registration, ATEX or IECEx certification for international markets, or Chinese manufacturing licence details. Buyers are advised to request copies of the explosion-proof certificate (CNEX or NEPSI), test reports, and a factory quality system audit before commitment.