How about this for simplified procedure?
1) Get a 5ml syringe from a local pharmacy (usually free of charge) and remove at least two batteries from your 5-in-1 (in order to prevent false rain-data being recorded)
2) Unscrew both calibration screws a few turns (in the -ve direction), to make sure they underestimate the rain.
3) Use a drinking straw to tilt a rocking cup onto one of the screws (insert in the vent opposite to screw you wish to calibrate).
4) Intake 2.2 ml worth of water into a syringe (see attachment for example)
5) Pour the liquid into the rain funnel, cup should not tip at this point. If it did: Unscrew the screw you are calibrating further, and repeat steps 3 and 4.
6) Slowly screw in the screw (in the +ve direction) until the cup tilts.
7) Repeat steps 3, 4 and 5, this time being very careful to drip at the end. The cup should tilt on the last drop.
8) If the cup did not tilt at the last drop, repeat steps 6 and 7. If it did, congratulations, you are done with this screw, repeat the process (3+) with the other screw.
No need to remember you calibration number, it's actually pretty easy to calibrate each time you need it.
Video is coming this week, stay tuned.
Cheers.
1) Get a 5ml syringe from a local pharmacy (usually free of charge) and remove at least two batteries from your 5-in-1 (in order to prevent false rain-data being recorded)
2) Unscrew both calibration screws a few turns (in the -ve direction), to make sure they underestimate the rain.
3) Use a drinking straw to tilt a rocking cup onto one of the screws (insert in the vent opposite to screw you wish to calibrate).
4) Intake 2.2 ml worth of water into a syringe (see attachment for example)
5) Pour the liquid into the rain funnel, cup should not tip at this point. If it did: Unscrew the screw you are calibrating further, and repeat steps 3 and 4.
6) Slowly screw in the screw (in the +ve direction) until the cup tilts.
7) Repeat steps 3, 4 and 5, this time being very careful to drip at the end. The cup should tilt on the last drop.
8) If the cup did not tilt at the last drop, repeat steps 6 and 7. If it did, congratulations, you are done with this screw, repeat the process (3+) with the other screw.
No need to remember you calibration number, it's actually pretty easy to calibrate each time you need it.
Video is coming this week, stay tuned.
Cheers.