Large Display Temperature Meters
Instruction Manual
39
Input Offset Adjustment (
OFFSEt
)
This parameter allows the user to select an offset to the input signal being
displayed. Offset values can be either positive or negative and can be any
number within the range of the display. The offset value is programmed through
the offset (
OFFSEt
) menu.
The offset feature can be useful to compensate for errors due to thermocouple
junctions or excessive lead wire resistance in RTDs.
The offset value is factory default to zero. The offset value is automatically reset
to zero whenever a programmed parameter, related to the temperature display, is
changed.
To program the offset value follow instructions described in,
Five
Basic Digit/Display-Setting Instructions on page 31.
Program input offset
Press
ENTER
, when
OFFSEt
appears press
ENTER
again to program input offset value.
Example:
If display reads 85
°
F when the actual temperature
is 80
°
F, program an offset value equal to -5
°
F.
Then the display will indicate the actual
temperature.
85F
then
OFFSEt
then
00000F
then
-0005F
then
80F
Lockout Jumper
The Lockout jumper is used to restrict modification of calibration and
programming values. It is labeled “LOCK” on JP1 (see Figure 11 on page 29).
The lockout feature allows viewing only of the alarm settings and temperature
points programmed to produce the 4 and 20 mA output signals.
The following menu functions are still available with the lockout jumper installed.
Display
Type of Function
HI t
Displays maximum temperature.
LO t
Displays minimum temperature.
CLEAr
Clears (resets) maximum or minimum temperatures
reached by the process.
SEtPtS
Displays alarm set and reset points.
output
Displays 4 and 20 mA output points, if this option is
installed.
dIA9
Displays parameter settings one at a time for diagnostic
purposes. Press
ACK
to exit diagnostic menu at any time.
