Hach FL1500 Manuel D'utilisation De Base page 19

Connect to optional devices or inputs/outputs
Remove the power to the instrument. Refer to the expanded version of this manual on the
manufacturer's website for the wiring instructions.
Connect to the relays
Electrocution hazard. Do not mix high and low voltage. Make sure that the relay connections are all
high voltage AC or all low voltage AC.
Fire hazard. Relay loads must be resistive. Always limit current to the relays with an external fuse or
breaker. Obey the relay ratings in the Specifications section.
Use the relay connections to start or stop an external device such as an alarm. Use wire that is rated
for 300 V. Use a minimum wire gauge of 18 AWG. Make sure to obey the relay connection
requirements in Specifications
power from the relays locally if there is an emergency or for maintenance.
1. Remove the power to the instrument.
2. Open the access door. Refer to
3. Remove the high-voltage barrier.
4. Put the cable through a strain relief fitting near the relay connectors.
5. Strip the wires to 7 mm (0.275 inch).
6. Install each wire in the connector. Refer to
7. Install the high-voltage barrier.
8. Tighten the cable strain relief.
9. Install the access door.
D A N G E R
W A R N I N G
on page 3. Make sure to have a second switch available to remove
Open the access door
Figure 10
on page 11.
and Table 5.
English 19