Hanna Instruments HI 4101 - Manual (Page 5)

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IV. IV. IV. IV. IV. Design Elements Design Elements Design Elements Design Elements Design Elements
The Hanna HI 4101 ammonia gas sensor has 3 main
parts. These are the membrane/membrane cap, outer probe
body with antirotation key and the pH/reference assembly
which includes the outer electrode cap, spring, inner cap
and pH/reference electrode assembly.
Outer probe body
antirotation key inner cap
pH/reference electrode assembly
spring
outer electrode
cap
pH
sensitive
membrane
reference
electrode
cable
membrane/membrane cap