Hanna Instruments HI 9828 - Manual (Page 12)

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1.5.3 D.O. sensor activation
The D.O. probe is shipped dry. To hydrate the probe and prepare it for use pro-
ceed as follows:
• Remove the black & red plastic cap. This cap is used for shipping purposes only
and can be thrown away.
• Insert the supplied O-ring in the membrane.
• Rinse the supplied membrane with electrolyte while shaking it gently. Refill with
clean electrolyte. Gently tap the membrane over a surface to ensure that no air
bubbles remain trapped. To avoid damaging the membrane, do not touch it
with your fingers.
• With the sensor facing down screw the cap clockwise to the end of the threads.
Some electrolyte will overflow.
1.5.4 Installation
The multisensor probe can support 3 different electrodes, DO, EC, pH/ORP. To
make easier the installation, the 3 sensors have 3 proper color codes.
For correct sensor installation, proceed as follow:
• Grease the O-ring gaskets.
• Insert the sensor while paying attention to the correct alignment with the corre-
sponding colored connector; fix the sensor by screwing the locking nut with
the supplied tool.
• When all sensors are mounted, screw the protection sleeve for taking mea-
surements or the transparent beaker for calibration.
• With the meter off, connect the probe to the DIN socket on
the bottom of the meter by aligning the pins and pushing
in the plug. Tighten the nut to ensure a good connection.