Combustion Efficiency Analyzer ECA 450 Bacharach

The ECA 450 is an industrial-grade analyzer ideal for professionals concerned about combustion efficiency, environmental compliance, or both. Accommodating up to seven sensors, simultaneous measurements and calculated parameters are evaluated to ensure that industrial equipment is meeting environmental regulations while burning safely and efficiently.

Combustion Efficiency Analyzer ECA 450 Bacharach

The ECA 450 is designed for on-demand or semi-continuous sampling of industrial furnaces, boilers, and other industrial combustion equipment. It complies with regulations such as U.S. EPA test methods, EN 50379, CTM-030 and state/local protocols including SCAQMD.

Note: The ECA 450 calculates CO2 value based upon other measured values during the combustion process. It does not measure CO2 directly.

Measures up to 7 gases simultaneously (minimum O2 and CO), including NOx, SOx and combustibles
Sensors are easily replaced or upgraded in the field
Rugged suitcase design with a large, easy-to-read display
Built-in printer for instant traceability and record-keeping


PowerInternal rechargeable battery or via supplied wall adapter
Run Time8 hours minimum
Size (H x W x D)13.5 x 18.5 x 9 in. (34.3 x 47.0 x 22.9 cm)
Weight25 lb. (11.3 kg)
Fuels[1]Natural gas, coal, oil 2/4/5/6, wood, kerosene, bagasse, propane, LPG, KOKS, LEG, biofuel
Operating ConditionsAnalyzer: 32 to 104 °F (0 to 40 °C), 15 to 90% RH (non-condensing), 1 ATM ± 10%
Probe tip[2]: 1472 °F (800 °C) maximum, 10 inH2O (25 mbar) maximum draft
Warm-up Time60 seconds
Memory1000 locations
ApprovalsCE mark

[1] Depending upon combustion equation type – see manual for details

[2] For standard 12 in. probe, P/N 0024-3023

Measurement Ranges

O20.1 to 20.9%
CO (H2 Compensated)0 to 4,999 ppm
CO (High Range)4,001 to 80,000 ppm
NO0 to 3,500 ppm
NO20 to 500 ppm
SO20 to 4,000 ppm
Combustibles0 to 5.00% (application dependent)
Stack Temperature-4 to 2,400° F (-20 to 1,215° C)
Primary / Ambient Temperature-4 to 999° F (-20 to 999° C)
Pressure / Draft-27.7 to 27.7 inwc

Calculated Ranges

Combustion Efficiency0.1 to 100%
Excess Air1 to 250%
CO20 to fuel dependent maximum
NOx (NO + NO2)0 to 4,000 ppm
NOx (Referenced to %O2)0 to 17,000 ppm
CO (Referenced to %O2)0 to 99,999 ppm
NO (Referenced to %O2)0 to 14,900 ppm
NO2 (Referenced to %O2)0 to 2,100 ppm
SOx (Referenced to %O2)0 to 17,000 ppm


O2±0.3% O2 on practical concentration of flue gas
Stack Temperature±4°F from 32 to 255° F (±2°C from 0 to 124° C)
±6° F from 286 to 480° F (±3°C from 125 to 249° C)
±8° F from 481 to 752° F (±4°C from 250 to 400° C)
Primary / Ambient Air Temperature±2° F from 32 to 212° F (±1° C from 0 to 100° C)
Pressure / Draft±2% of reading or ± 0.02 inwc, whichever is greater
CO±5% of reading or ±10 ppm, whichever is greater from 0 to 2,000 ppm
±10% of reading from 2,001 to 4,000 ppm
NO±5% of reading or ±5 ppm, whichever is greater from 0 to 2,000 ppm
NO2±5% of reading or ±5 ppm, whichever is greater from 0 to 500 ppm
SO2±5% of reading or ±10 ppm, whichever is greater from 0 to 2,000 ppm
HC±5% of full scale
Selectable FuelsNatural Gas, Oil #2, 4, 5, 6, Propane, Coal, Wood, Kerosene, Bagasse


N. Amer. P/NDescription
0024-7221ECA 450 with O2 and CO sensors and probe with 12 in. sample tube (approximately 15 ft. total length), water trap, particulate filter and probe stop
0024-8400ECA 450 with O2, CO, NOx kit (NO and NO2 sensors) and compact sample conditioner
0024-8401ECA 450 with O2, CO, NOx & SOx kit (NO, NO2 and SO2 sensors) and compact sample conditioner

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