Hanna-instruments HI 9931 Manual do Utilizador descarregar pdf (Página 12)

GENERAL POINTS

• The

relay terminals relay terminals

relay terminals of the controller are

poweredpowered

powered. This

means that you can simply hook up your pump or electrovalve

directly to the controller and do not need additional power

supply.

• Unscrew the 4 screws on the right hand panel and remove the

cover and the gasket. Thread the wires through the access ports

on the right hand side of the controller.

•

BeforeBefore

Before

connecting the controller to the mains, wire connecting the controller to the mains, wire

connecting the controller to the mains, wire

the controller completelythe controller completely

the controller completely and make all the connections for

pumps, alarm, probe, set the alarm threshold and adjust the

settings. Upon completion

replace the coverreplace the cover

replace the cover. Only then

connect the controller to the power supply.

PROBE CONNECTION

• Attach the conductivity/TDS probe (HI 3002, HI 3001D or

HI 7638) to the DIN socket located on the bottom of the casing.

Align the guide on the connector with the socket, push the

connector in and tighten the retainer ring. (HI 3002 is more

suitable for direct immersion in the tank, vat or pipes. HI 3001D

can be mounted directly into a pipe and HI 7638 is recom-

mended for high temperature and pressure applications).

• The probes incorporate a temperature sensor and the controller’s

circuitry automatically compensates for the temperature effect.

RELAY CONNECTIONS

• Wire the external devices (pumps or electrovalves) directly to the

relay terminal strips of the controller (see 17 - Functional Dia-

CONNECTIONS & WIRINGCONNECTIONS & WIRING

CONNECTIONS & WIRING

DIN connector

WIRING ACCESS

PORTS

1 2 ... 7 8 9 10 11 12 13 14 15 16 17 ... 27 28

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Hanna-instruments HI 9931 Manual do Utilizador Página 12