Emerson Fisher FIELDVUE L2t Instruction Manual page 15

Instruction Manual
D104782X012
Figure 6. Overview
Overview
Overview
Status
Device
Mode
Primary Purpose Variables
PV: Percent of Span
Temperature: Instrument Temperature
Limit Switch Status: Switch State
Loop Current
Short Cuts
Device Information
Calibration
Primary Purpose Variables
Device includes Important information regarding the connected instrument such as device type, firmware and
hardware revisions, functional options, and the HART ID identifier.
Dynamic Variables:
Input Voltage, Instrument Temperature, Cycle Counter, Switch One State, Switch Two State, Last Time Closed, Last
Time Open, Closed State Dwell Time, Open State Dwell Time, Percent of Span
Instrument Date
Allows you to set the date on the instrument clock for use in stamping logged events. The order of year, month, and
day depends on the setting of the operating system. For example, enter the date in the form MM/DD/YYYY, where MM
is two digits for the month (1 through 12), DD is two digits for the day (1 through 31), and YYYY is four digits for the
year (1980 through 2040).
Instrument Time
Allows you to set the time. The instrument clock uses a 24-hour format. Enter the time in the form HH:MM:SS, where
HH is two digits for the hour (00 to 23), MM is two digits for the minutes (00 to 59), and SS is two digits for the seconds
(00 through 59).
When alerts are stored in the alert record, the date and time (obtained from the instrument clock) that they were
stored is also stored in the record.
Instrument Serial Number
Enter the serial number on the instrument nameplate, up to 12 characters.
Limit Switch One/Limit Switch Two
Set the Normal Position (Open or Close), Action (Disable, Trip Above or Trip Below), the Trigger Point (equipment
position desired for the switch to change state), and the Deadband (percent [%] of ranged travel around the trigger
point, where the switch will not change state; default is 1%).
If the transmitter experiences a power interruption the switch will go to the open state. Upon loss of power the
switches will default to the open state. Default is normally open.
L2t Liquid Level Controller
October 2023
15