[DB600] General instruction manual
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7 Options
7-1 Moisture prevention
Moisture-proof coating is processed on the printed board inside the instrument.
7-2 Square roots
A square roots is performed on the linear input (mV, V) to display the measured value (PV) and perform
control calculation.
This is used when the measured/controlled amount is proportional to the square root (√) of input signal as
in the case where a flow rate is measured/controlled using a differential pressure transmitter.
7-3 Lower limit burnout
When the input line is disconnected, the PV display jumps the lower limit and lower limit alarm is
generated.
The input signal for lower limit burnout uses the only signal the same as that for standard upper limit
burnout. Note that there is no distinction from the under-range.
Lower limit alarm turns
ON.
Output 1 produces an output according to the
setting of "PV abnormal output (MODE6)".
Output 2 is fixed to 0% output.
Sensor
correction
Sensor
correction
Internal process of square roots
Internal process of square roots calculation
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