Instruction Manual alpha-pH 1000
26
7.6.3
Selecting Alarm or Wash function
This function allows you to use the Alarm relay as Wash contact. The Wash contact is used in combination with
automatic cleaning systems. During the wash cycle, the analogue output is set on hold.
1)
Follow direction in 7.6.1
to enter Configuration mode.
2)
Press the ENTER key
until upper display shows “Alr” or “CLn”.
3)
Press the
▲
or
▼
key
to choose the desired function.
4)
Press the ENTER key
to confirm your selection.
7.6.4
Selecting the alarm time lag if relay 3 has been set to Alarm mode
This parameter group lets you select a period of time before the alarm activates when your set point has been
overshot. You can select from 0 to 2000 seconds.
1)
Follow directions in 7.6.1
to enter Configuration mode.
2)
Press the ENTER key
. Scroll with the
▲
or
▼
key until the upper
display shows a numerical value (in seconds) and the lower display
shows “AL.d”.
3)
Press the
▲
or
▼
key
to select how long of an alarm delay (0 to 2000
seconds) you want.
4)
Press the ENTER key
to confirm your selection.
5)
Proceed to 7.6.4 step 3
, or return to Measurement mode by pressing the
▲
and
▼
keys simultaneously
(escape).
7.6.5
Selecting steady or pulse contact for the alarm relay
This parameter group lets you select whether the alarm contact will operate as a steady contact or a fleeting
(single pulse) contact. Pulse contact closing time is 1 second.
1)
Follow directions in 7.6.1
to enter Configuration mode.
2)
Press the ENTER key
. Scroll with the
∆
and
∇
keys until the upper
display shows “Stdy” or “FLEt” and lower display shows “AL.C.”.
-
AL.C = alarm contact
-
StdY = steady contact
-
FLEt = fleeting (single pulse) contact
3)
Press the
▲
or
▼
key
to select steady or pulse contact.
4)
Press the ENTER key
to confirm your selection.
5)
Proceed to 7.6.5 step 3
, or return to Measurement mode by pressing
the
▲
and
▼
keys simultaneously (escape).
30
AL.d
SETUP
HOLD
Stdy
AL.C
SETUP
HOLD
FLEt
AL.C
SETUP
HOLD
Alr
rL3
SETUP
HOLD
CLn
rL3
SETUP
HOLD