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Presys Instruments
DC.PT - sets the decimal point position for visualization of Engineering units in
display. There are up to three decimal places for linear signals, and for temperature
sensors there is one decimal place or none.
OFST - allows the user to enter an off-set value in Engineering Units to be
added to the measured variable. This parameter can be used to equalize
measurements in different instruments.
CJC - cold junction compensation for thermocouples. Select INT for internal
cold junction compensation; otherwise, select NO. Generally INT should be selected.
Input sensor types are described in table - 1 of section 1.3 on Technical
Specifications.
FILTER - this parameter provides the time constant of a first order digital filter
associated to the selected input. In order to leave the signal without filter set this
parameter to zero.
B.OUT - When temperature sensors break (thermocouple or RTD) or there are
wires disconnected, the display indicates burn-out to the corresponding channel. 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.
Level 3 - Alarm
The Indicator has up to two alarm devices (see figure 16) followed by the leds
associated to each channel.
Each alarm device can support any combination of high and low alarms of the
channels.
Once the alarm configuration is established (CONF option), it is possible to
view or change only the values of alarm setpoints. Press the UP key while CONF
option is shown, in order to have a quick access to the setpoints of all alarms already
configured. The mnemonics of alarm setpoints have a code which is explained
through the two following examples:
1H.r1
4L.r2
Operation
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Channel 1 high-alarm setpoint associated to relay 1.
Channel 4 low-alarm setpoint associated to relay 2.
DMY - 2015
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