alpha-pH 1000
19
1)
Follow directions in 7.4.1 to enter Controller mode.
2)
Press the ENTER key. Scroll until the lower display shows “rEL”
and the upper display shows the current selection (de-energised =
dEEN or energised = EN).
3)
Press the
!
or
"
key to choose de-energised or energised
relay state.
4)
Press the ENTER key to confirm your selection.
5)
Proceed to 7.4.4 step 3, or return to Measurement mode by
pressing the
!
and
"
keys simultaneously (escape).
7.4.4
Selecting proportional range value Xp
Note: If the controller type “oFF” or “L.Ct” is set, the parameters listed in 7.4.4 and 7.4.5 are blanked out.
This mode lets you set a band as a percentage of its full scale value. You can select this range from 10
to 200%, and the lower display shows “PrP”.
1)
Follow directions in 7.4.1 to enter Controller mode.
2)
Press the ENTER key. Scroll until the upper display shows the
proportional range (a number from 10 to 200%), and the lower
display shows “PrP”.
3)
Press the
!
or
"
key to choose the proportional range value
Xp.
4)
Press the ENTER key to confirm your selection.
5)
Proceed to 7.4.5 step 3, or return to Measurement mode by pressing the
!
and
"
keys
simultaneously (escape).
7.4.5
Maximum Pulse Length (tPL) or Maximum Frequency (FPF)
Note: If the controller type “oFF” or “L.Ct” is set, the parameters listed in 7.4.4 and 7.4.5 are blanked out.
This mode lets you set the maximum pulse length or the maximum frequency at which the relay will
operate.
1)
Follow directions in 7.4.1 to enter Controller mode.
2)
Press the ENTER key. Scroll until the lower display shows “t.PL”
or “F.PF”.
-
In PLC (pulse length) mode: The lower display shows “t.PL” to
indicate pulse length. The upper display shows your current pulse
length. You can select any value from 0.5 to 20 seconds.
-
In PFC (pulse frequency) mode: The lower display shows F.PF to
indicate pulse frequency. The upper display shows your current
maximum pulse rate. You can select any value from 60 to 120 pulses
per minute. When the measured value exceeds the Proportional Band
in 7.4.4, the controller will pulse the relay at this rate.
3)
Press the
!
or
"
key to choose the period duration or
maximum frequency, depending on your mode.
4)
Press the ENTER key to confirm your selection and to return to Advanced Set-up mode, or return
to Measurement mode by pressing the
!
and
"
keys simultaneously (escape).
NOTE: The alarm contact is always of the fail-safe type: in the event of power failure the alarm is
triggered.
dEEn
rEL
SETUP
HOLD
En
rEL
SETUP
HOLD
100
PrP
SETUP
HOLD
10.0
t.PL
SETUP
HOLD
60
F.PF
SETUP
HOLD