SM21-AG4傳感器

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Model：SC25V/SC24V/SM21/SR20/SC21/SM29/SC29/SM60

SM21-AG2、SM21-AG4、SM21-AG6、SM21-AL4、SM21-AL6、SM21D-AL4

SM21D-AG4、SM21D-AG8、SM21D-AL6、SM23-AN4、SM23-AN6、SM29-PT9、SM29D-PT9

SM21 Single Glass Electrodes
The glass membrane is the most important part of the complete
pH measuring loop. pH sensitive glass has the particular property
that alkali metal ions present in the texture of the glass are
exchanged with H+ ions of the liquid. The selection of the correct
type of glass electrode depends on both the type of glass
membrane thickness of the glass membrane.

Two types of glass are available, as described here:
”G” glass
This is used for the membranes of electrodes in processes where
the nominal pH value varies between pH0 and pH10. Since
this type of glass has a wide application range it is also termed
“general purpose” glass.
“L” glass
The application of “L” glass is for measurements in alkaline media
with high process temperatures.

Thickness of the glass membrane

Shockproof
A bulb shaped glass membrane suitable for general purpose
Heavy duty
This dome shaped glass membrane is suitable for harsh and
abbresive applications.