I. Product Overview  

The XMTC-62-11-0 is a 2-port sealed reference gas-type thermal conductivity gas analyzer, originally manufactured by GE (formerly Panametrics) in the USA. Based on microprocessor technology and the Wheatstone bridge principle combined with glass-insulated thermistors, it measures the concentration of binary gas mixtures online (standard factory calibration: H₂ in N₂). The instrument features no mechanical moving parts, making it resistant to vibration and airflow fluctuations, and is an explosion-proof industrial-grade device.  

Model Code Explanation:  

62 = Explosion-proof housing; 11 = Dual-port sealed reference gas chamber; 0 = Standard range configuration  

Origin: USA / Ireland  

Industrial Explosion Protection Certification: ATEX/FM/CSA Class I Div.1  

Protection Rating: Type 4X/IP66  

 Core Hardware Specifications  

Gas Path Materials: Contact medium – 316L stainless steel + Viton fluororubber seals; aluminum chamber with FEP anti-corrosion coating  

Power Supply: DC 24V (20–28 VDC); total power consumption ≤2.5W  

Sample Conditions  

Sample Gas Flow Rate: Standard 250 cc/min (at atmospheric pressure)  

Sample Gas Temperature: ≤50°C; Ambient: -20°C to +55°C (high-end model up to 70°C)  

Weight: Approx. 0.4–1 kg; compact design for wall-mounted installation  

Output Signals  

Analog: 4–20 mA (two channels, load ≤550Ω)  

Digital: RS485/RS232, HART, Modbus; optional PROFIBUS-PA/DP  

Measurement Performance (Factory Standard: H₂ in N₂)  

Selectable Ranges: 0–1%, 0–5%, 0–10%, 0–100%, 90–100% H₂ (nitrogen-based)  

Accuracy: ±2% FS full scale; linearity ±1% FS; repeatability ±0.5% FS  

Response Time T90 < 20 seconds; zero drift ≤±0.5% FS per week  

Extended Measurements: CO₂, He, Ar, CH₄ binary mixtures (requires factory pre-calibration)  

Typical Application Scenarios  

Power Industry: Hydrogen purity monitoring in hydrogen-cooled generator systems (H₂ in N₂)  

Metallurgical Heat Treatment: Hydrogen content detection in nitrogen-protected furnace gases  

Chemical Industry: H₂ monitoring in ammonia/methanol synthesis processes; CO₂ in methane; trace hydrogen in chlorine  

Specialty Gases: Online purity analysis of high-purity argon, helium, and hydrogen products  

Series Differentiation  

XMTC-62-11-0: 2-port sealed reference gas (no external reference gas source required—commonly used on-site)  

XMTC-62-21: 4-port flow-through reference gas (requires external reference gas source—high-precision applications)