ETA Process Instrumentation - since 1971

ETA Process Instrumentation -- Since 1971

ETA Associates merged with Process Instrumentation Inc. as of 9/1/2011. Visit our sister companies: Safety Inc and iFacility Service.

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Ametek Thermox Ametek Thermox
 Thermox analyzers from Ametek are among the most established combustion monitoring and control devices available today. A broad range of products is available for analyzing oxygen, combustibles, and methane in combustion flue gases for combustion control, safety, and thermal NOx reduction. Industries served include Electric Power Generation, Petroleum Refining, Petrochemical Processing, Cement & Lime Manufacturing, Glass and Ceramics, Pulp & Paper, Iron & Steel, and Non-Ferrous Metals production.  
Ametek Thermox Model 120HD Hydrogen Analyzer 

Furnace and Inert Atmosphere Control Analyzers

Oxygen analyzers for PPM O2 in inert blanketing gases and extended-range oxygen analyzers for monitoring premix burner atmospheres in glass, metal, and ceramics coating, curing and surface treating furnaces.

Model 120HD Portable Hydrogen Analyzer                                 Download printable brochure.

The 120HD analyzer functions as a katharometer. It operates by having two parallel tubes both of which contain gas and heating coils. The gases are examined by comparing the rate of loss of heat from the heating coils into the gas. The coils are arranged in a bridge circuit so that resistance changes due to unequal cooling can be measured. 

One channel contains moisture-saturated air and the mixture to be tested is passed through the other channel. Hydrogen has a much higher thermal conductivity than air and so the Model 120 HD is very sensitive to hydrogen, but it will also respond to any gas whose thermal conductivity is different from that of air.

  Specifications
Operating Principle:   Katharometer
Operating Range:  0 to 25% hydrogen in water-saturated air
Accuracy:   ±4% full scale (±1% H2 v/v)
Response Time:   < 1 minute for 90% step change 
Repeatability:   ±2% full scale (±0.5% H2 v/v)
Environment:  Ambient Temperature: 50ºF to 100ºF (10ºC to 38ºC)
Relative Humidity:   0% to 100%
Shock Test:  MIL-S-901D (Navy) Grade B
Recommended Sample
Gas Flow Rate: 		 50 ml/min
Sample Pressure:  5 psi (34 kPa) gauge maximum
Power Supply:  (1) 6V Industrial Alkaline Lantern Battery
Battery Life (approx.):  120 hours minimum with backlight
Power Drain:  210 mA, 6V (with backlight)
 170 mA, 6V (without backlight)
Weight:  Less than 15 lb with battery
 
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ETA Process Instrumentation, 119 Foster Street, Bldg. 6, Peabody, MA 01960 • (978) 532-1330 or sales(a)etapii.com
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