Instruction manual
Alpha
DO 2000
1. From the setup mode, select the “CNTR” screen and then
press ENT key
.
2.
Selecting the controller type (TYP): Press
▲
or
▼
key
to select the
suitable controller type:
−
OFF = controller off
Use control OFF to operate controller as a monitor only or to prevent
relays from switching. When the controller is set to OFF, all the LEDs
will be switch off in the Measurement mode
−
L.CT = limit value control (on/off control).
Use limit control with pumps or valves for fast response
−
P/PI = proportional/integral control
Use proportional control to operate your pumps smoothly or for precise
control of proportioning valves. Use PI controller to eliminate steady
state error.
Î
NOTE:
Please refer to
Appendix 3
for detailed information on controller
settings.
Press ENT key
to confirm your selection.
−
If the controller is set to
limit value control
(L.CT):
3.
Selecting the relay status under Non-Alarm condition (REL): Press
▲
or
▼
key
to choose the desired relay status (de-energized = “DEEN” or
energized = “EN”).
Press ENT key
to confirm your selection.
−
If the controller is set to
proportional control
(P/PI):
4.
Selecting the proportional controller type (TYP): Press
▲
or
▼
key
to
select the suitable controller type (“PLC” = pulse length control, “PFC” =
pulse frequency control).
Press ENT key
to confirm your selection.
−
If the proportional controller type is set to
pulse length control
(PLC):
5.
Selecting the relay status under Non-Alarm condition (REL): Press
▲
or
▼
key
to choose the desired relay status (de-energized = “DEEN”
or energized = “EN”).
Press ENT key
to confirm your selection.
6.
Setting the proportional range (PRP): Press
▲
or
▼
key
to set the
proportional range (setting range: 10 to 500%).
Press ENT key
to
confirm your setting.
7.
Setting the pulse length (T.PL): Press
▲
or
▼
key
to set the pulse
length (setting range: 0.5 to 20 seconds).
Press ENT key
to confirm
your setting.
8.
Setting the integral action time (IAT): Press
▲
or
▼
key
to set the
integral action time (setting range: 0.0 to 999.9 minutes).
Press ENT
key
to confirm your setting.
25
Содержание ALPHA DO 2000 PG POLAROGRAPHIC DISSOLVED OXYGEN CONTROLLER TRANSMITTER
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