Sita IT Series, Руководство по установке, использованию и обслуживанию

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Important!
The sensor must be calibrated at every lamps changing.
Important!
To calculate the radiation factor % it is necessary that the lamps reach the steady state
conditions. Delay time depends on lamps type and water temperature. We therefore advice
to wait 30 min from the system start up.
Important!
The same operation can be done if the irradiation is shown in W/m2 (or the dose in J/m2.)
This operation can be performed only by authorized personnel.
➢
4/20 mA calibration: The PLC has a 4/20 mA output signal which describes the water
temperature and the UV dose (or UV Irradiance) calculated from PLC. The temperature signal
in mA has a linear correspondence: 4mA= 0°C and 20mA=100°C. The output signal of the UV
dose can be set:
Touch on to open 4/20mA calibration popup menu:
Associate the values 4 and 20 mA to the minimum and maximum Dose (Irradiance). Touching
"OK", the user calibrates the 4/20 mA output.
With the button user can switch from screen 2 to 1.
Screen 2:
this screen allows to set alarm thresholds.