Vaisala RS41 - Manual (Page 41)

Appendix A _____________________________________________ Replacing Radiosonde Batteries
VAISALA_______________________________________________________________________ 39
8. Put the styrofoam case back inside the radiosonde bottom cover.
Check the positioning of the sensor boom: Make sure the small
hole at the stem of the sensor boom meets the white pin on the edge
of the radiosonde cover. Use your thumb to push the stem of the
sensor boom, if necessary, but do not touch the sensors.
1310-008 Figure 18 Placing Radiosonde Sensor Boom
9. Replace the radiosonde cover by first attaching the three hooks at
the sensor end of the radiosonde and then setting the rest of the
cover down.
Figure 19 Replacing Radiosonde Cover