Yokogawa DO30G Dissolved Oxygen Sensor - Manual (Page 24)

<Appendix 1.>
A-1
IM 12J5B3-01E
Appendix 1. How to Remove the DO30G Membrane Protective
Cap
CAUTION
A black rubber cap is attached to the tip of the DO30G to protect the membrane.
Pulling off the cap forcefully causes a negative pressure inside the protective cap, because the
protective cap sticks to the DO30G, and may stretch the membrane or damage it.
Furthermore, removing the cap by twisting it may loosen the membrane assembly and affect the
measurement results.
Please read the following notes and removal procedure in advance in order to prevent damage
and loosening of the membrane assembly from occurring.
3rd Edition : May 28,2010
1. Prohibited actions
Prohibited action 1
No good
Figure 1 Do not pull off the cap forcefully
No good
Prohibited action 2
Figure 2 Do not pull off the cap twisting the cap
counterclockwise.
2. How to Remove Protective Cap
When taking out of the package, a black rubber cap is attached the DO30G shown below.
DO30G
Protective cap
Figure 3 Condition after taking out of the package