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Beschikbare talen
Beschikbare talen
Connect the alarm relay to a control device or an alarm device as necessary. The alarm relay is
normally closed (NC).
The alarm relay opens when the sample flow rate is less than the alarm setpoint (60 L/h). Refer to
Adjust the sample flow switch
on page 21 to set the alarm setpoint.
Refer to
Figure 6
to connect the alarm relay. The relay terminal accepts 15 AWG wire (as determined
by load application). Use wire with an insulation rating of 300 VAC or higher. Wire gauge other than
15 AWG is not recommended.
The current to the relay contacts must be 5 A or less. Make sure to have a second switch available to
remove power from the relays locally in case of an emergency or for maintenance.
When switching large inductive loads (e.g., motors and pumps) or currents higher than 5 A, use an
auxiliary relay to extend the relay life.
Relay terminal connections to the mains circuit in permanent connection applications must have
insulation rated for a minimum of 300 V, 70 °C (158 °F). Terminals connected to the mains circuit
with a power cord connection must be double insulated and rated 300 V, 70 °C (158 °F) at both the
inner and outer insulation levels.
Figure 6 Connect the relay
16 English
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