Thermo Scientific LevelPRO, User Manual

Page: 67 / 128

Operation
Physical Inputs & Outputs
5. In the Max Value @ Max Current textbox, enter the maximum value, in
engineering units, that corresponds to the value entered in the Max Current
textbox.
6. Choose an operational mode from the Hold/Live dropdown.
•
Live – The selected Measurement ID is currently driving the current output.
•
Hold Minimum – The current output is set to the Min Current value.
•
Hold Maximum – The current output is set to the Max Current value.
•
Fault Low – The current output is set to the low value determined by the
Namur Standard (3.8 mA).
•
Fault High – The current output is set to the high value determined by the
Namur Standard (20.8 mA).
•
Hold Value – The current output is set to the value entered by the user in the
Hold Value (EU) textbox.

Once a value in engineering units have been entered into the Hold Value
(EU) field, the EZ Cal II software will convert that value into milliamps
and display that value in the Present Value field.
7. The Alarm Action dropdown allows the user to designate what happens when an
alarm associated with the selected current output is triggered.
•
None – Do not take any alarm action.
•
Set Output to minimum – Sets the current output to the Min Current value.
•
Set Output to maximum – Sets the current output to the Max Current value.
•
Set Output to fault low – Sets the current output to the low value established
by the Namur standard (3.8 mA).
•
Set Output to fault high – Sets the current output to the high value
established by the Namur standard (20.5 mA).
•
Hold Output at set value – Sets the current output to the value designated in
the Hold Value (EU) field.
•
Clear Hold value – Sets the operational mode of the current output to Live.
8. Enter the HART ID in the appropriate textbox if a Hart Communication Protocol
is connected to the detector. This option is only available on the Current Output
C tab.
9. Additional fields on these screens, which are listed below, are for display purposes
only and are not configurable by the user.
•
Mode – On the Current Output A tab, this field always displays Normal at
this time. On the Current Output C tab, this field displays whether the
detector is connected to a Hart Communication Protocol.
•
Live Value (EU) – This field displays the live calibrated value in engineering
units in both Live and Manual modes.
•
Calibration Points – This field displays the number of points the current
information used to calibrate the current input.
•
#1 mA Min Value – This field displays the expected minimum analog input
value provided by the user during calibration.
Thermo Scientific LevelPRO User Manual
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