Vaisala RS41 - Manual (Page 35)

Appendix A _____________________________________________ Replacing Radiosonde Batteries
VAISALA_______________________________________________________________________ 33
APPENDIX A
REPLACING RADIOSONDE BATTERIES
This appendix provides information on replacing the radiosonde
batteries.
RS41-SG uses two lithium batteries which have power for
approximately five hours.
If the radiosonde LED light indicator is red and MW41 sounding system
gives a warning on low battery capacity during the radiosonde ground
check, you must replace the radiosonde batteries.
To replace the batteries, follow the steps below. You can use, for
example, a small screwdriver to open the radiosonde cover.
NOTE Note that inserting or replacing radiosonde batteries is not part of the
normal operation of the radiosonde. It is only needed in a possible error
situation indicated by the radiosonde or the ground equipment.
CAUTION Do not touch the radiosonde sensors, they are fragile and can be easily
contaminated. Handle the radiosonde carefully and do not let the
sensors touch anything while changing the batteries.