Presys DMY-2030 Light Technical Manual page 27

PRESYS
 Instruments
SQRT - allows presenting on the display the squared root of the linear input
signal. The Cut-Off parameter given in % of the full scale makes input values below
Cut-Off to be shown as zero scale. See figure 16.
DEC.PT - sets the decimal point position for visualization of engineering units in
display. There are up to four decimal for linear signals, and for temperature sensors
there is one decimal or none.
OFSET - allows the user to enter an off-set value in engineering units to be added
to the measured variable.
FILTER - this parameter gives the time constant of a first order digital filter
coupled to the input. When you do not want the filtering of the measured signal, just set
zero to this parameter.
BREAK – determines the direction of change of the indication when a sensor
break is detected for the 4-20 mA current or 1-5 V voltage inputs. This option can be
configured as DOWN (downscale), UP (upscale), or NONE (no change). Its choice is
made so that the alarms associated with relays 1 and 2 are not activated.
B.OUT - When temperature sensors break (thermocouple or RTD) or there are
disconnected wires, the display indicates burn-out. In this case, choosing the UP option
for this parameter activates the high-alarms and the DOWN option activates the
low-alarms.
UNITS - selects °C or °F for temperature indication.
Fig. 16 - Input signal square root
DMY-2030-Light-5S-Energy
Operation
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