The New Cosmos Model XP-702ⅢS UL Portable Gas & Refrigerant Leak Detector (Order Code: Y50607871), engineered and manufactured by New Cosmos Electric Co., Ltd. in Osaka, Japan, is an internationally acclaimed, ultra-sensitive handheld sniffer instrument designed to locate trace leaks of both combustible natural gases and synthetic halocarbon refrigerants.

In modern industrial facilities, district gas networks, and large HVAC installations, natural gas (LNG/Methane) leaks present critical combustion hazards, while refrigerant leaks (Freon) degrade cooling performance and incur heavy regulatory environmental fines. The XP-702ⅢS UL offers an intelligent 2-in-1 detection architecture, enabling field maintenance teams to toggle between combustible gas mode and refrigerant leak sniffing with a single keypress.

Model Code Breakdown & Configuration (XP-702ⅢS UL / Y50607871):
- XP-702: New Cosmos high-sensitivity handheld gas leak detector platform equipped with an internal suction pump.
- ⅢS (3S): Third-generation hardware architecture featuring high-speed digital processing, accelerated response time, and optimized battery life.
- UL: Certified intrinsically safe conforming to UL 913 standards for Class I, Division 1, Groups C & D hazardous environments.
- Target Gas (LNG & Freon): Dual gas-pair calibration for detecting Liquefied Natural Gas (LNG / Methane) and halocarbon refrigerants (R-134a, R-410A, R-407C, R-22, etc.).

Key Engineering Features & Operational Advantages:
- Proprietary Hot-Wire Semiconductor Sensing Technology: Incorporates New Cosmos's advanced hot-wire semiconductor element, offering exceptional sensitivity capable of pinpointing microscopic leaks down to 30 ppm for both LNG and Freon (equivalent to gas leak rates as low as 3.3 x 10^-6 Pa·m³/s).
- Integrated Diaphragm Suction Pump: Features an internal motorized sampling pump pulling a continuous flow rate ≥ 300 mL/min through a semi-rigid flexible probe. Technicians can snake the probe tip directly along pipe joints, valve packings, flanges, and tight mechanical clearances.
- Single-Button Dual-Gas Selection: Easily toggle detection modes between LNG and Freon refrigerants without swapping sensor modules or performing time-consuming field recalibrations.
- Proportional Audio & Visual Leak Indication: Utilizes an intuitive variable-rate visual LED flashing strip combined with a loud piezoelectric buzzer. As the probe draws nearer to a leak source and gas concentration increases, the flashing cadence and audio beep rate accelerate proportionally, allowing technicians to pinpoint leaks in loud equipment rooms.
- UL 913 Intrinsically Safe Certification: Formally certified intrinsically safe for use in hazardous atmospheres categorized under Class I, Division 1, Groups C & D, guaranteeing safe operation in confined utility vaults and gas-charged mechanical rooms.
- Ergonomic, Lightweight & Long Operating Life: Weighs only 260 g and provides up to 12 hours of continuous operation on two standard AA alkaline cells, maximizing field productivity during extended inspection shifts.

Target Industrial Sectors & Applications:
- Oil & Gas, City Gas Utilities: Pipeline weld integrity testing, gas meter station surveys, flanged regulator stations, and buried service lines.
- Commercial HVAC & Central Chiller Plants: Locating pinpoint pinhole leaks on evaporator coils, condenser tubing, service valves, and compressor shaft seals.
- Food & Beverage Cold Storage: Ammonia/Freon dual monitoring in high-pressure refrigerated warehouses and food freezing tunnels.
- Automotive & Transportation: Air conditioning system verification on vehicle assembly lines and LNG-fueled heavy vehicle fuel line inspections.
- Industrial Safety & Fire Inspection: Pre-entry safety sweeps, building maintenance leak localization, and environmental compliance audits.

• Manufacturer: New Cosmos (New Cosmos Electric Co., Ltd.)
• Country of Origin: 100% Japan (Made in Japan)
• Product Line: XP-702 Series High-Sensitivity Handheld Gas Leak Detectors
• Model Designation: XP-702ⅢS UL (XP-702IIIS UL)
• Order / Part Number: Y50607871
• Target Detection Gases:
  - Liquefied Natural Gas / Methane / City Gas (LNG)
  - Freon Halocarbon Refrigerants (CFCs, HCFCs, HFCs: R-134a, R-410A, R-407C, R-404A, R-22, etc.)
• Sensing Technology: Proprietary Hot-Wire Semiconductor Sensor
• Minimum Detectable Leak Threshold:
  - LNG / Methane: 30 ppm (equivalent to leak rate of 3.3 x 10^-6 Pa·m³/s)
  - Freon Refrigerants: 30 ppm
• Sampling Method: Continuous motorized suction via internal diaphragm pump
• Suction Flow Rate: ≥ 300 mL/min
• Response Time: Under 3 seconds for target gases
• Leak Alarm Indication:
  - Visual: Multi-level flashing LED bar with flashing rate proportional to gas concentration
  - Audible: Intermittent acoustic buzzer with beep frequency proportional to gas concentration
• Explosion-Proof Classification: Intrinsically Safe UL 913 Class I, Division 1, Groups C & D
• Power Supply Requirements: 2x AA alkaline dry cells (LR6)
• Continuous Battery Run Time: Up to 12 hours (at 20°C using standard alkaline batteries)
• Battery Health Indicator: Integrated LED low-battery warning indicator
• Sampling Probe: Flexible semi-rigid probe wand (approx. 200 mm length) with replaceable particulate filter
• Operating Ambient Temperature Range: -20°C to +50°C (-4°F to +122°F)
• Operating Humidity Range: Below 85% RH (non-condensing)
• Physical Body Dimensions: 38 x 130 x 65 mm (W x H x D, excluding flexible probe)
• Instrument Net Weight: Approximately 260 g (including batteries)
• Standard Package Includes: Protective leather carry case, spare particulate filters, flexible sampling probe, and 2x AA alkaline batteries.