Hanna-instruments HI 98280 Manual do Utilizador descarregar pdf (Página 13)

1.5.3 DO Sensor Activation

The DO probe is shipped dry. To hydrate the sensor 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 some electrolyte solution 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 sensors: DO, EC, pH or pH/ORP.

To make easier the installation, the sensors are color coded.

For a correct 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 calibrating.

• With the meter off, connect the probe to the DIN socket on

the bottom of the instrument by aligning the pins and push-

ing in the plug. Tighten the nut to ensure good connection.

pH/ORPprobeDOprobe

ECprobe

Probewith

calibrationbeaker

Probewith

protectionsleeve

pH/ORPprobeDOprobe

ECprobe

Probewith

calibrationbeaker

Probewith

protectionsleeve

Temperature

sensor

1 2 ... 8 9 10 11 12 13 14 15 16 17 18 ... 63 64

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Hanna-instruments HI 98280 Manual do Utilizador Página 13