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| -rw-r--r-- | doc/micropeak.txt | 14 |
1 files changed, 10 insertions, 4 deletions
diff --git a/doc/micropeak.txt b/doc/micropeak.txt index 3621a2dc..b6dd0ddb 100644 --- a/doc/micropeak.txt +++ b/doc/micropeak.txt @@ -327,10 +327,16 @@ Keith Packard <keithp@keithp.com>; Bdale Garbee <bdale@gag.com> sensor out of direct sunlight. The barometric sensor sampling ports must be able to - "breathe", both by not being covered by foam or tape or other - materials that might directly block the hole on the top of the - sensor, and also by having a suitable static vent to outside - air. + "breathe", both by not being covered by solid foam or tape or + other materials that might directly block the hole on the top + of the sensor, and also by having a suitable static vent to + outside air. + + One good solution is to use a small rectangle of Poron + 50-30031-12X12P or equivalent to cover the sensor. This is an + open cell foam in 1/32" thickness with an adhesive backing. It + seems to do a good job of blocking sun while still allowing + airflow to and from the sensor internals. As with all other rocketry electronics, Altus Metrum altimeters must be protected from exposure to corrosive motor |