Connections; System Functions - HACH LANGE si629 P Manual De Uso

3. Installation
Details
To open the transparent front door, press with two
fingers the part marked with ( ) in the scheme.

3.1.2. Connections

When making any wiring connections to the instrument, any warnings and notes found throughout the
manual must be adhered to. For more safety information see "Safety information" on page 5.
DANGER
Always disconnect power to the instrument when making any electrical connections.

System functions

DANGER
High-voltage wiring for the instrument is protected by a protective casing. The protective casing
must remain in place unless a qualified installation technician is installing wiring for power.
8
si629 P_HACH_LANGE_Ed.0510.indd ANG:8 si629 P_HACH_LANGE_Ed.0510.indd ANG:8
Cable glands.
On the lower part of the instrument there are 5
cable glands, 2 PG 7 and 3 PG 9.
1,2 Power supply 230 or 24 VAC ± 10%.
(115 VAC under demand).
Ground connections, see Important
3,4
notes (page 9).
5,6,7,8 Temperature probe input.
9 Temperature probe shielding.
10,11 Output current 4-20 mA (pH or mV).
12...18 Relay contacts.
19 pH or redox electrode input.
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