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Operation
4.10.2 Programming
The factory configuration of the instrument is:
• Measuring units: ppm
• Relays for limit and alarm: deactivated
• 4-20 mA output for chlorine and temperature: deactivated.
• Hold. Last value
To modify the factory programming and adapt the instrument to the application:
Note: During programming, the relays of the corresponding channel are deactivated. 4-20 mA
output (register) is in Hold (21 mA or last value).
1. Press ESC to access to the MAIN MENU.
2. Introduce the code 100 and accept with OK
3. Select SYSTEM. Press OK to confirm
4. Select PROGRAM CHANNEL and then the channel to configure.
5. Select and modify the following options:
4.10.3 Calibration
With the calibration the instrument adapts to the electrode and to the variations the sensor
suffers in the time. The calibration is carried out against the DPD1 colorimetric method.
pH dependence Low. Approx. 10% per one pH unit
Time constant T90: 1 minute
Connector MP-4
Dimensions Ø 25 mm x 175 mm
Polarization time 1 hour
Table 2 Specifications Chlorine sensor 60 70
Model 60 70
Option Description
Units Measuring units: mg/L or ppm
Relay control
Selection of the type of control and the limits values.
NO: indicates that no control with relays will be used.
See detailed information on 4.13, Page 49.
Alarm Alarm.See detailed information on 4.12, Page 48.
4-20 mA output,
free residual chlorine
4-20 mA output for Cl2. See detailed information on 4.14, Page 51.
4-20 mA output, º C
4-20 mA output for Temperature. See detailed information on 4.14,
Page 51.
Hold
Selection of the current output (register) when the channel is in
situation of cleaning, programming or calibration.
NOTICE
Before calibration the system instrument-electrode should have been working for at least 1 h
(polarization period)
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