SMART Temperature Transmitter
PTT74-Ex Series User Manual
Sep.2020
14
www.faraboard .com
FAHM Co
.
Industrial Automation
Doc. PTT74-ExRev99/07M
3.2.1.3
Decimal point
User can select the decimal points count of primary variable to display on LCD with DP
menu. For selecting the primary variable as displayed variable please refer to LCD
parameters.
parameter
display
Parameter tuning structure
DP
(Decimal point for
show the primary
variable)
Press <M> until this page is appeared on LCD. Then press
<Z> to access the mapping mode (programing mode).
You can select the position of decimal point by pressing
<S>. After that, press <Z> until all characters blink. Then
press <M> for the saving new parameter and switching
from programing mode to operation mode.
If user select AUTO, according to momentary value of primary variable, the device
determines the number of decimal places.
3.2.1.4
Damping Value
User can determine the desired damping of primary variable and output signal using this
parameter. By setting of this parameter when the process temperature changes suddenly,
the primary variable and output signal will be change smoothly and will be reach to the
changed value after set damping value with a linear curve.
parameter
display
Parameter tuning structure
Damping
( for smoothing the
noisy output (based
on sec))
Press <M> until this page is appeared on LCD. Then press
<Z> to access the amount of time based on second
(programing mode). You can change the amount of
digits by <S> and change the point and position of digits
by <Z>. After tuning this parameter, press the <Z> until
all characters blink. Then press <M> for the saving new
parameter and switching from programing mode to
operation mode.
The unit of damping value is second and the specified value cannot be negative or greater
than 60 seconds.
3.2.1.5
Low Trimming
User can perform low-trim of device with local panel. Often, low-trim is used for offset
calibration of device which may be for removing of ambient temperature effect on
temperature transmitter or sensor cable length.
parameter
display
Parameter tuning structure
Trim-low
( For offset
removing and local
calibration of
temperature)
Press <M> until this page is appeared on LCD. Then press
<Z> to access the amount of temperature (programing
mode). You can change the amount of digits by <S> and
change the point and position of digits by <Z>. After
tuning this parameter, press the <Z> until all characters
blink. Then press <M> for the saving new parameter and
switching from programing mode to operation mode.
The unit of low trim value is same as primary variable.
