Hach SP-51 Manual Básico Del Usuario página 15

Figure 11 shows the alarm relay contacts connected to the terminal strip with normally open and
normally closed terminations. Terminals are unpowered and rated for 5 A at 100–240 VAC resistive
load.
The relay connector accepts 18–12 AWG (0.75–1.0 mm
operates with the application. A wire gauge less than 18 AWG (0.75 mm
Figure 11 Alarm connections
Terminal block
J7
4.4 Install the buffer solution
Buffer solutions are formulated at the factory and are ready to install without preparation. Put the
bottle in the instrument as shown in
manufacturer's website.
4.5 Install the indicator solution
Indicator solutions are formulated at the factory and are ready to install without preparation. Put the
bottle in the instrument as shown in
manufacturer's website.
Table 2 Relay wiring
Terminal 1
COM Normally open (NO)
Figure 12 on page 16. Additional information is available on the
Figure 12. Additional information is available on the
2
) wire. Select the necessary wire gage that
Terminal 2
2
) is not recommended.
Terminal 3
Normally closed (NC)
English 15