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Appendix 3: External Relays

The relays on the

αlpha CON 190 series controller are rated for 6 amps at 110

VAC and can be wired directly to your final control element (provided its power

requirements does not exceed this). However, to preserve the life of your

controller, or if higher power is needed, it is recommended that you use the

controller relay to drive an external relay.

Diagram below shows a typical installation. Wiring should be changed

appropriately if normally closed (N.C.) operation is desired.

12 11 10 9 8 7 6 5 4 3 2 1

19 18 17 16 15 14 13

21 20

1 2 ... 27 28 29 30 31 32 33 34

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EUTECH INSTRUMENTS ALPHA CON 100 CONDUCTIVITY CONTROLLERTRANSMITTER Manuale delle Istruzioni Pagina 32