eutech-instruments alpha ph 800 phorp controllertransmitter Manuale Utente

7.3 Control Relay A/Control Relay B (SP1/SP2) sub-

function

The SP1 option sets the operating parameters for Relay A; the SP2 option

sets the operating parameters for relay B. Since these groups have the

same set-up parameters, they are described together.

7.3.1 Entering the Set point 1 (Set point 2) sub-function

1) Enter Advanced Set-up mode. Push the

ENTER key.

2) Press the

∆∆∆∆

∇

keys to scroll until the

upper display shows SP1 (SP2).

7.3.2

Selecting the set point values

This lets you choose the value that will cause

your controller to activate the respective relays.

1) Follow directions in 7.3.1 to enter Control

Relay mode. If you are in this mode, skip to

step 2.

2) Press the ENTER key. The upper display shows the current set point

value and the lower display shows SP1 (SP2).

3) Press the

∆∆∆∆

∇

keys to enter the value for Set point 1 (Set point 2).

4) Press the ENTER key to confirm.

5) Proceed to 7.3.3 step 3, or return to Measurement mode by pressing the

∆∆∆∆

and

∇

keys simultaneously (escape).

7.3.3 Choosing High or Low set points

Select a “lo” to activate relay when the pH/ORP value undershoots the set

point; select a “Hi” to activate relay when the value overshoots the set point.

Using both SP1 and SP2, the following configuration for the set points can

be selected: lo/lo, lo/hi, hi/lo, or hi/hi.

SP1

SETUP

HOLD

SP1

SETUP

HOLD

4.00

SP1

SETUP

HOLD