Connections - HACH LANGE si629 P Manuel D'utilisateur

3. Installation
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.

3.2.2. 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.
si629 P_HACH_LANGE_Ed.0510.indd ANG:11 si629 P_HACH_LANGE_Ed.0510.indd ANG:11
Ground connection. See Important
1
notes (page 12).
2,3 Power supply 230 or 24 VAC ± 10%.
(115 VAC under demand).
4...9 Relay contacts.
10,11 Current output 4-20 mA (pH or mV).
12...15 Temperature probe input.
16 Shielding. See "Precautions".
17 pH or redox electrode input.
11
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