SMART TDS BLOWDOWN CONTROLLER
5.2.4 Hysteresis Set
This function is used to prevent fluctuations of the valve when opening and closing.
When The TDS has increased above the Set Point, and the TDS blowdown valve has
been opened until the TDS drops below the hysteresis of the SP.
It can be selected 5% of set conductivity value.
Smart Blowdownd Controller BC 900 provides alarm relay output when conductivity
level gets over the value adjusted with this function.
Alarm relay released at this TDS level.
5.2.6 Alarm Hysteresis Set
A damping effect for turbulent conditions.
Normally 5% of alarm figure would be enough.
This function is used to define waters conductivity value taken properly from boiler.
When taking water sample from boiler and calibrating the controller, the boiler must
be at operating pressure and temperature. To take more appropriate sample for
measuring and calibrating, Atech Sample Cooler SC 9 is recommended.
For the best accuracy, calibrate the controller with the
TDS as close as possible to the Set Point.
Check the calibration weekly to ensure optimum
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