Oakton 1000 series, Руководство по эксплуатации

Страница: 12 / 34

1. Disconnect controller from power.
2.
Connect the resistor to the terminals
used for the resistivity cell (pins 21 and
22)
. See page 9 for terminal connections.
3.
Reconnect controller to power.
Controller will automatically enter
Measurement mode.
4.
Set controller to manual temperature
compensation and enter a value of 25°C.
See page 31 for directions.
5.
Enter Calibration mode . From measure-
ment mode, press the CAL key. Press the
▲
key to enter Security code “11”. Press
the ENTER key.
See figure
6.
Press the ENTER key. The upper display
will show a percent value and the lower
display will show CEL (cell). The “CAL”
indicator will appear at the top of the
display.
See figure
7.
Press the ENTER key again. The upper
display will show the current resistivity
reading and the lower display shows the
manual temperature setting (25°C).
See figure
NOTE: A m
Ω
indicator appears on the
display, but is equivalent to M
Ω
.
8.
Press the
▲
and
▼
keys
to match the dis-
play reading to the calculated resistance.
calculated resistance = the specified resistance
value of the resistor ÷ by the cell constant.
See figure
9.
Press the ENTER key
to confirm your
selection. The upper display will show
the adjusted cell constant value and the
lower display will show CEL.
See figure
10.
Press the ENTER key again to return to
Measurement mode.
23
6. Advanced set up mode
The OAKTON 1000-series conductivity or
resistivity controller features eight sub groups
that organize all set-up parameters. These
parameters let you customize your controller
for your exact process.
The sub groups are:
1. Temperature compensation curve (tC)
2.
Temperature settings (SEt °C)
3.
Control Relay 1 configuration (SP1)
4.
Control Relay 2 configuration (SP2)
5.
Control type (Cntr)
6. Current output (rng)
7.
Controller configuration (ConF)
8.
conductivity or resistivity calibration (CAL)
To view set-up parameters without access
to change them:
From measurement mode:
• Push the ENTER key.
• Leave the security code at “000”.
• Push the ENTER key again.
To change set-up parameters:
From measurement mode:
• Push the ENTER key.
• Press the
▲
key to scroll to security code “22”.
• Push the ENTER key again.
See pages 26-57 for detailed information on each
set up parameter.
Notes
To simplify operations, the controller will not
display set up parameters that are not relevant
to the set up of the controller. For example:
If you set the controller for Automatic Temperature
Compensation, you will not see the parameters for
setting a calibration temperature or a process tem-
perature.
22
Resistivity calibration: using a precision resistor
For resistivity controllers:
NOTE: You need a precision resistor to perform this calibration method.
A
A
B
C
D
E
CAL HOLD
%
B
C
ATC
CAL HOLD
m
Ω
C
C
ATC
CAL HOLD
m
Ω
D
C
ATC
CAL HOLD
%
E
SETUP HOLD
SETUP HOLD
SETUP HOLD
SETUP
HOLD
SETUP HOLD
SETUP HOLD
SETUP HOLD
SETUP HOLD