EUTECH INSTRUMENTS ALPHA PH 800 PHORP CONTROLLERTRANSMITTER, Руководство по эксплуатации, Страница: 22 / 34

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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
∆∆∆∆
or
∇ ∇ ∇ ∇
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
∆∆∆∆
or
∇ ∇ ∇ ∇
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 SP1 SP1 SP1
SETUP
HOLD
Lo
SP1
SETUP
HOLD
4.00
pH
SP1
SETUP
HOLD