MEXA-1170SX

Motor Exhaust Gas Sulfur Analyzer

The MEXA 1170 SX is a new instrument used to measure sulfur for after treatment and transient lubricant oil consumption. The analyzer uses ultraviolet fluorescence (UVF) for detection and it can be operated in a total sulfur mode, analyzing sulfur oxides, hydrogen sulfide and all organic sulfur compounds. An inorganic sulfur mode will analyze hydrogen sulfide and the sulfur oxides. The final operational mode will analyze just the sulfur oxides. Any one of these modes can be selected by the user from a front panel interface.

Application:

SO₂ and TRS measurement: To enhance after-treatment system research and development to evaluate sulfur poisoning in de-NO_x system, such as LNT (Lean NO_x Trap) and Four Way Catalyst (NO_x and PM reduction system simultaneously).
Total sulfur measurement: "Lubricant Oil Consumption" using the sulfur trace method

*1: Total reduced sulfer

Development Concept:

Measurable compounds: S02, TRS*1, Both SO₂ and TRS simultaneously and Total-S
High sensitivity, wide range and fast response
Compact and low power consumption products
The instrument is equipped with a heated sampling pump so it can measure engine exhaust gases without an additional sampling system. As an optional function, the MEXA-1170SX can be operated from the main control unit (MCU) of a HORIBA MEXA-7000 series, as well as from the control panel on the MEXA-1170SX.

Type	MEXA 1170SX
Components	SO₂, TRS^, Both SO₂ and TRS simultaneously and Total-S Total reduced sulfur
Principle	Ultra-viiolet fluorescence
Sample gas flow rate	SO₂, TRS Approx. 5 l/min
Sample gas flow rate	Total-S in TS-mode Approx. 4 l/min
Linearity	SO₂, SUM, TRS mode: SO₂ within ±1.0% of full scale SUM within ±1.0% of full scale TS-mode TS within ±1.0% of full scale