Selecting Proportional Range Value, Xp; Maximum Pulse Length (Tpl) Or Maximum Frequency (Fpf) - EUTECH INSTRUMENTS ALPHA CON 1000 CONDUCTIVITY CONTROLLERTRANSMITTER (REVISION 3) Instruction Manual

Operating Instructions
7.4.4

Selecting Proportional Range Value, Xp

Note: If the controller type "oFF" is set, the parameters listed in 7.4.3, 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. Follow directions in 7.4.2 and select either
"PLC" (pulse length control) or "PFC" (pulse frequency control).
Press ENTER key.
3) Press the ENTER key until the upper display shows the proportional
range (a number from 10 to 200%), and the lower display shows
"PrP".
4) Press the ▲ or ▼ keys to choose the proportional range value Xp.
5) Press the ENTER key to confirm your selection.
6) Proceed to 7.4.5, 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" is set, the parameters listed in 7.4.3,
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".
a.
b.
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.
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.
19
αlpha-CON1000
HOLD SETUP
100
HOLD SETUP
10.0
.pl
HOLD SETUP
60
f.pf