HRX-OM-X037
Chapter 5 Display and Setting of Various Functions
HRL Series 5.4 Description of the Screen
・Electric conductivity and alarm setting (AL28)
6. Entering value settings for electrical conductivity of circulating fluid and hysteresis causes
circulating fluid to flow from the solenoid valve through to the DI filter to control the electrical
conductivity.
Only in the case of option D1 "CH1 with electrical conductivity control", it can be set.
The following items can be set on “Electrical conductivity and alarm (AL28) setting” screen:
• Target electric conductivity value
• Electric conductivity hysteresis
• Setting of solenoid valve operation during the operation of the product:
“Control”/“Normally open”/“Normally closed”.
• “Enabling”/“Disabling” of “AL28: CH2 electric conductivity increase” alarm function
Table 5.4-9 Settings of electric conductivity (AL28)
Target electric
conductivity
value
Sets a target electric conductivity value.
0.5 to 45.0μS/cm
25.0μS/cm
Electric
conductivity
hysteresis
Sets an electric conductivity hysteresis.
Refer to ■ About electric conductivity
control (P.5–44) for details.
0.1 to 10.0μS/cm
0.5μS/cm
Solenoid valve
operating
method
Controls the solenoid valve
to achieve the target value.
Normally open (remains
open when product is
stopped)
High Electric
Conductivity
Alarm
AL28: Setting
of CH1
electrical
conductivity
increase alarm
“AL28” activates when electrical
conductivity increases above the set
value. This sets the setting value and
operation when an alarm occurs.
“AL28” automatically turns off the alarm
when the electrical conductivity falls below
the set value.
0.4 to 46.0μS/cm
45.0μS/cm
Operation continues during
the alarm
By default
For more information on electric conductivity control, refer to “■ Electrical conductivity” (P.5-44).
Electric conductivity and alarm (AL28) setting
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