Operation
35
© Lutz-Jesco GmbH 2020
Subject to technical changes.
200116
BA-42840-02-V03
Water sampling station
EASYPRO COMPACT
Operating instructions
7.
Confirm the entry with the green checkmark.
ü
1-point adjustment of a 3-electrode potentiostat completed.
9.5.3.2 2-point adjustment of a 3-electrode potentiostat
Pre-conditions for actions:
ü
A measurement device for determining the DPD value is already
present.
ü
The sensor is operated with sample water.
Perform the following work steps:
1.
Working in the main menu under “Calibration”, navigate to the
“Sensors” tab.
2.
Working under “Sensor”, select the sensor that you wish to calibrate.
3.
Press the “2 points” button.
4
2-point calibration begins.
4.
You will be asked to set the first reference value; this is the zero point.
If the zero point was mal-set by accident, set it by pinching off the
measuring electrode and entering a value of zero. Should real 2-point
calibration be performed, e.g. due to hot water, you must first perform
calibration with chlorine-free and then with chlorinated water. Enter a
value for the zero point.
5.
Confirm the entry with the green checkmark.
6.
Take sample water in immediate proximity to the measuring cell and
confirm with “OK”. This means that the current signal at the time of
the sample water extraction is saved to rule out signal fluctuation as
a measurement error during the DPD ascertainment.
7.
Determine the concentration in the sample water using the DPD
method.
8.
First enter the determined DPD value.
9.
Confirm the entry with the green checkmark.
ü
2-point adjustment of a 3-electrode potentiostat completed.
9.5.4 Temperature
You can connect a temperature sensor to every input module. You can
adjust the temperature sensor by setting a reference value.
When setting the reference value, the device will automatically correct the
measurement of the temperature sensor by the difference.
9.5.4.1 Adjustment of a temperature sensor
Pre-conditions for actions:
ü
A thermometer is available.
ü
You have activated the measurement of the temperature (see section
8.6.1.2 “Temperature inputs” on page 25).
Perform the following work steps:
1.
Working in the Main menu under “Calibration”, navigate to the
“Temperature” tab.
2.
Working under “input”, select the input module for which you wish to
set a reference value.
3.
Press the “Reference value” button.
4.
Enter the reference temperature measured beforehand.
5.
Confirm with the green checkmark.
ü
Adjustment of a temperature sensor completed.
9.5.5 Servomotor relay
9.5.5.1 Servomotor with position feedback
You can connect servomotors with a position feedback to your device and
control them via an output. Before you can control the servomotor exactly,
you must first compensate the control via your device and the position of
the servomotor.
During compensation, the servomotor is first driven to the end position
and then back.
This section only applies to servomotors with a feedback potentiometer.
9.5.5.2 Calibration of an servomotor with position feedback
Pre-conditions for actions:
ü
The servomotor is switched on and has been connected properly.
ü
The output has been configured correctly (see Tab. 27 “Functions of
the individual controllers” on page 24).
Perform the following work steps:
1.
Working in the Main menu under “Calibration”, navigate to the
“Outputs” tab.
2.
Working under “Output”, select the output which is to be adjusted.
3.
Press the “Compensate potentiometer” button.
4.
A further window with a progress bar opens; this indicates the
position feedback.
5.
Compensation is started using the “Start” button.
4
The motor starts and runs to top speed, then stops. This can take a
number of minutes.
6.
Completion of the compensation is signalled with “Compensation
OK”.
ü
Calibration of an servomotor with position feedback completed.
9.5.5.3 Servomotor without position feedback
You can actuate servomotors without a position feedback. To this end, you
need to measure how quickly the motor starts and then set the controller
accordingly.
Pre-conditions for actions:
ü
The servomotor is switched on and has been connected properly.
ü
The output has been configured correctly (see Tab. 27 “Functions of
the individual controllers” on page 24).
Resources required:
@
Timer.
Perform the following work steps:
1.
Working in the main menu, navigate to the “Manual mode” menu
item.
