
36
GENERIC PRESSURE MONITORING
Figure 40
– Generic Pressure Monitor Settings
Optimizer3 monitors Generic Pressure with loop-powered 4-20 mA Pressure transducers. The transducers can be used to monitor
air pressure, hydraulic pressure, or any generic pressure at the circuit breaker. When Generic Pressure is selected, scaling for the
mA current range and pressure range appear.
When Generic Pressure mode is selected, scaling for the mA current range and pressure range appear. High and Low Pressure
Alarm Limits appear. If an alarm limit is set to -14.5 PSIG (-1BAR), the alarm is disabled.
The Low Pressure Alarm Limit is asserted if the measured pressure is less than or equal to the setting.
The High Pressure Alarm Limit is asserted if the measured pressure is greater than or equal to the setting.
A hysteresis of 3% of full range is applied to an active alarm to reduce nuisance toggling of the alarm. The alarm is non-latching
and clears itself when the measured pressure is between the alarm limits.
DEW POINT MONITORING
The Optimizer3 monitors moisture with 4-20 mA Dew Point sensors. This moisture is expressed as a Dew Point Temperature – the
temperature at which the water vapor will condense into a liquid. The Dew Point sensors can be used to monitor the moisture
content of SF₆ gas when plumbed into the SF₆ gas system, typically alongside the density or pressure sensors.
The Optimizer3 calculates and records the Average Dew Point every two hours. This calculation uses the measured Dew Point
values from the previous 30 days. When Dew Point is selected, scaling for the mA current range and Dew Point range appear.
The High Dew Point Alarm Limit will also appear. If this Limit is set to -60˚C (-76˚F) the alarm is disabled. The High Dew Point Alarm
Limit is asserted when the AVERAGE Dew Point value is equal to or higher than the setting.
A hysteresis of 0.2˚C is applied to an active alarm to reduce nuisance toggling of the alarm. The alarm is non-latching and clears
itself when the measured Dew Point is below the alarm limit.
Figure 41
– Dew Point Monitoring Settings
Figure 42
– Dew Point Displayed on the Sensors Page
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