Bluelab Dosetronic Peridoser Kit - Manual (Page 38)

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Version P1.3 : 151012
Bluelab Dosetr
onic P
eridoser Kit
Bluelab Corporation Limited
6
6.3 Error FAQ
Solutions
For a measurement to act as a reason for locking
out another control, its control direction must be
set to raise or lower.
No: it is the required value that fl ashes if the
control is locked out. The actual display fl ashes if
the measurement is in error, or is in a state that
it could be a cause for a lockout (e.g ineffective
control, or alarm high.)
Lockout due to ineffective control is where the
actual Conductivity or pH value does not move
two resolution steps in the required direction
after 15 on/off cycles. To solve this, change the
on and/or off time, so that the system sees a
change of one resolution step after 3 cycles.
Problems
The alarm high/low (actual value) for one
measurement fl ashes, but does not seem to be
locking out the intended control (required value)
A control seems to be locked out - shouldn’t the
actual display fl ash for that measurement?
A conductivity or pH control locks itself out (its
required display is fl ashing). How do I know if the
cause was “ineffective control”?
Actual values
- The probe is out of water.
- The EC value of your solution is below 0.2.
- Your alarm is enabled, the value has met or exceeded
the alarm threshold.
- The system has noted ineffective control. The value
hasn’t changed by 2 steps in 15 cycles
(1 cycle = on and off times combined)
Required Values
- The value you have is outside the internal
Lockout values.