0.1 (1 decimal place), 0.02 (2 decimal places), 0.003 (3 decimal places) and 0.0004 for display
with more than 4 digits. Note if the decimal point is altered the display will need to be recalibrated
and alarm etc. settings checked.
5.26 Digital filter
Display: FLtr
Range: 0 to 8
Default Value: 2
Displays and sets the digital filter value. Digital filtering uses a weighted average method of
determining the display value and is used for reducing display value variation due to short term
interference. The digital filter range is selectable from 0 to 8, where 0 = none and 8 = most
filtering. Use ^ or v at the FLtr function to alter the filter level if required. Note that the
higher the filter setting the longer the display may take to reach its final value when the input is
changed, similarly the relay operation and any output options will be slowed down when the filter
setting is increased. To set the digital filter value go to the FLtr function and use the ^ or v
push buttons to set the required value then press F to accept this selection.
5.27 Display unit
Display: dISP unit
Range: NONE, " C , " F , " , C or F
Default Value: NONE
Display unit - When used to measure temperature certain temperature display unit characters can
be selected to appear on the display. Choices are:
NONE gives no display units e.g. a display such as 2345
" C - gives " C display unit e.g. 45 " C
" F - gives " F display unit e.g. 90 " F
" - gives " display unit e.g. 123 "
C - gives C display unit e.g. 45.2C
F - gives F display unit e.g. 237F
Note that if a temperature display is selected the unit will take one or two of the available display
digits, this will limit the maximum value which can be displayed. If the number becomes too large
to display then an error message -or- will appear on the display.
5.28 First calibration scaling point
Display: CAL1
Range: Any display value
Default Value: n/a
First scaling point for 2 point calibration scaling - See “Calibration” chapter, section 6.1.
PM4IVMAN-2.4-0 27 of 56
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