SEMTECH Micro Proportional Dilution System (MPS) is a small and robust partial flow dilution system that meets the requirements of both US EPA CFR40, part 1065 and ISO 16183. It can be used in conjunction with an exhaust flow meter as a proportional diluter, or as a constant dilution system.

 

The SEMTECH MPS controls the dilution air flow by employing a multi-bit parallel solenoid array.  Each solenoid is fitted with a critical flow orifice to provide precise and repeatable flow characteristics.  This patented flow technology can be operated at speeds up to 10Hz, providing a near instantaneous adjustment of sample flow.  A signal from an exhaust flow meter is used to provide the proportional sampling requirements.

 

High Speed Operation:  Operating at speeds up to 10 Hz, the system provides nearly instantaneous adjustment of sample flow.

 

Compact Size: The small size of the MPS means that it is well suited for in-vehicle use, while meeting the accuracy of laboratory grade equipment.

 

Configurable Dilution Ratios: The unit can be set to dilution ratios ranging from 4:1 to 60:1.

Rugged Construction: The unit can be used off-road and in other harsh environments.

 

Sample Flow:	< 5 LPM
Outlet Flow:	8 LPM (default - higher rate available upon request)
Dilution Ratio:	configurable ranges 5:1 to 50:1
Operating Speed:	10 Hz