Hach TitraLab Total Hardness Basic User Manual page 12

Figure 4 Position of protective stickers
Connection of feed tubes
The system is delivered with two feed tubes with bottle closures (DIN 45
thread). These feed tubes are supplied pre-installed on the TitraLab and
only need to be connected to the relevant reagent bottles.
1. Connect the tube from the IN socket of the burette valve to the
titrant bottle (EDTA 0.010 M TitraVer, P/N 20553). Screw on the
bottle closure to do this.
2. Connect the tube from the IN socket of the pump to the acid bottle
(Hardness Buffer reagent, TRIS 0.1 M). Screw on the bottle closure
to do this.
3. Place a desiccant cartridge into the designated opening in each
bottle closure.
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Figure 5 Connection of feed tubes
Connection of the electrode
1. Connect the electrode cable to the ELECTRODE port on the back
of the TitraLab.
The power is supplied via the TitraLab.
Connection of the tube to the electrode
The sensor holder of the titration stand has two tube guides.
1. Connect the tube from the OUT socket of the pump to the
electrode.
2. To do this, push the free end of the tube into guide "1" of the sensor
holder until it reaches the middle of the electrode (1).
3. Connect the tube on the OUT socket of the burette valve to the
electrode.
4. To do this, push the free end of the tube into guide "2" of the sensor
holder until the end of the tube is flush with the tip of the electrode
(2).