Messages and Diagnostic Codes
76
34-ST-25-20 MC Toolkit User Manual
Release 3
9/06
Item
Definition
Description
Sensor Type
Standardized designation of the physical design property of a sensor
(e.g., DP, AP for pressure TC, RTD for temperature.)
Span
The continuous range of values in the "normal" operating range of PV
values (that is, URV-LRV).
SV Secondary
Variable
A measured physical value of a physical property (e.g., temperature)
that relates to the measured primary physical property (e.g., pressure).
SV Units
Secondary Variable
Units
Standard scale of values of an SV, chosen by the user for convenient
display and interpretation.
URL
Upper Range
Limit
Minimum value in the useful range of the physical property of a
transmitter sensor can operate.
URV
Upper Range
Value
Maximum value in a continuous range of "normal" process values.
SEND
Command from the HHC to copy the values of displayed parameters
to either the transmitter to which it is connected, or to (NV? memory)
in the HHC.
XS Delta
Detection
Toggle for Delta
Alarm enabling
If XS Delta Detection is On and the Delta Alarm value is exceeded,
the PV output goes to the Failsafe value and a Critical Status message
is enunciated.
If Off and the Delta Alarm value is exceeded, the PV output is not
affected and a Non-Critical Status message is enunciated.
