Table 4 Pressure sensor requirements
| MEPAG Goals (2014) | Investigation | Requirements | Performance |
|---|---|---|---|
|
Goal II, Obj. A1, A4 Goal III, Obj. A3 Goal IV, Obj. B4, B7. | Detection of dust devil pressure signatures. | The PS resolution shall be better than 0.5 Pa. | NGM resolution in nominal mode (1 Hz measurement) ∼0.12 Pa. RSP2M resolution in nominal mode in order of 0.3-0.4 Pa. |
| The sensor shall be able to detect pressure changes with a variation speed of at least 1 Pa/s (PS’ response time shall be equal or better than [1 sec]). | On sensor level <1 Pa/s. On rover level achieved by heritage in the design (similar to REMS onboard MSL). | ||
|
Goal II, Obj. A1, A4 Goal III, Obj. A3 Goal IV, Obj. B1, B7. | Seasonal and diurnal pressure cycles | The PS shall have a range of [1-1200 Pa] [Req. L4-MEDA-05]. Note: the calibration shall be optimized for Mars range 400-1200 Pa and also for high vacuum. | The sensor has been calibrated in the range of [0–1400 Pa]. |
| Goal II, Obj. A1. | Pressure oscillations on the diurnal and hour scale | The PS accuracy shall be equal or better than [+/-20 Pa] from [1 to 400 Pa] and [+/-10 Pa] from [400 to 1200 Pa], over the operational temperature range of [-45 C to +55 C] [Req. L4-MEDA-43]. | With preliminary calibration coefficients, the accuracy of measurements performed during rover level tests is better than +/-5 Pa. Final calibration coefficients and accuracy BOL will be determined after the cruise calibration checkout. |