Xentaur XDT User Manual page 45

XDT User's Manual Appendices
Flow Diagram Operating State User Interface (continued) Manual & Scheduled Self Calibration
Power ON initialization
and sign on message
HI/LO
˚C
Viewing Dewpoint
DEWPOINT PSI
Flashing PSI indicates
pressure corrected
dewpoint
units
cancel
cancel
SET
Confirm SpanCheck
Viewing
Serial-
number
Legend: A slash ' ' in the display area, is used to depict two alternately shown (flashing back and forth) messages.
denotes beeping. Buttons without designator or arrow leading out, perform no function
Flow diagram items not related to Self Calibration are shaded in gray.
30 seconds anywhere (other than
"Calibration") without key press
Toggle Pressure Correction
SHORT PRESS
SET
Confirm Entry into
Self Cal Menus
SET
Set Reference
˚C
Gas dewpoint
DEWPOINT
values +/-0.1˚C
SET
Set Scheduled Calibration
Interval in hours
0 (blank)=Scheduled SelfCal disabled,
but SelfCal corrections not affected
values +/-1hr.
SET
Begin Self Cal Now
disable Self Cal corrections
Confirm performing
Self Cal NOW
abort performing Self Cal Now
Scheduled Time Elapsed,
Entry Point
During Self Cal the Analog output and Alarm Relays are frozen to their previous states
˚C
DEWPOINT
Electric Valve Activation, and
15 min. time out for system stabilization,
performed only if valve is installed.
electric
Displays dewpoint being measured now.
SET
NUMBERS
few sec
CALCULATING
CALIBRATION
SET
go to
Set-Up
State
Press together
New calibration
values are saved
to RESET the
instrument
1/2 sec
timeout
SET
˚C
dew is stable
DEWPOINT
perform
Self Cal
Electric Valve Deactivation, and final
Dewpoint stable testing,
Dewpoint stable testing, 0.5˚C for 3 min.
0.5˚C for 3 min. Displays
performed only if
dewpoint being measured now.
Displays dewpoint being measured now.
Sensor
OK Reading
TOO LOW
SET
1 sec
ignore error
38
appears when changing
settings of locked unit
View Hours left until
next Scheduled
Calibration
timeout
The Self Cal Corrections
will not be used in dew
computations from now on,
until another Self Cal is
performed, manually or
scheduled. Schedules
are not affected.
˚C
DEWPOINT
valve is installed.
electric
SET
Confirm
SpanCheck
again
SET
1 minute