Hanna Instruments HI 904 - Manual (Page 32)

2-10
SETUP
2.3.4.3.1 Titration Vessel Components
Warning: Always apply a thin layer of joint grease (supplied) to ground-glass joints before
attaching. Improperly-greased joints may become permanently seized!
To assemble the titration vessel, see Figure 4 and follow the steps below:
Karl Fischer Detector Electrode
The Karl Fischer detector electrode (F) consists of two parallel, platinum pins sealed into a
10mm diameter glass body. Two steel pins connect the platinum elements to a standard BNC
connector, which allows for easy attachment to the HI 904.
Attach to the titration vessel (A) in the dedicated ground-glass port.
Karl Fischer Generator Electrode
The Karl Fischer generator electrode (D) consists of two platinum electrodes (anode and
cathode) on a glass body. The anode and cathode may be separated by a diaphragm that is
built into the body of the generator. The HI 904 can be used with both diaphragm and
diaphragm-less generators.
Attach the generator electrode (D) to the titration vessel (A) in the dedicated ground-glass
port.
Desiccant Cartridge
The desiccant cartridge (E) provides a dry path for pressure equalization between the ambient
air and the inside of the titration vessel.
Attach the desiccant cartridge (E) to the top of the generator electrode (D) in the dedicated
ground-glass port.
Figure 4