MPS-1 Manifold Pressure Sensor

The MPS-1 is a solid-state sensor that measures engine manifold pressure. With a working pressure range of 6 to 73 inches of Mercury, this sensor can be used with both turbo and non-turbo Rotax engines.

The MPS-1 is available in two variants:

Absolute (MPS-1A)
This is the 'standard' sensor that, until now, was named the MPS-1. It measures absolute manifold pressure using a single port (as pictured on the right) and has the advantage that the CSC-1 will display the "real" manifold pressure at any altitude. Disadvantages of using this sensor are that the CSC's %power display will progressively underead as height is gained and that the estimated fuel flow display option is not available unless you are using a fuel injected engine.
Differential (MPS-1D)
This two-port sensor measures the difference in pressure between the engine's manifold and the ambient pressure. When using this sensor, the CSC-1's manifold pressure display is only an estimate at sea-level and it will progressively overead as height is gained. The advantage of this sensor is that the %power display becomes independent of altitude and, effectively, indicates throttle position. Furthermore, the CSC-1 can display a reasonable estimate of fuel flow when this sensor is being used.

Both variants of the MPS-1 have a simple 3 wire electrical interface for direct connection to the CSC-1. The 100cm long flying leads are Teflon insulated for use in high temperature (200 °C) environments. Power supply requirements are minimal, the unit draws just 10mA from the +12V supply.

For durability, the sensor is potted into a plastic case which is easily mounted using the supplied M4 screws.

Total weight is 60g.


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