SIT SITRANS RD300RANS RD300
Page 82
SITRANS RD300 – OPERATING INSTRUCTIONS
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Low-Flow Cutoff (
CutofF
)
The low-flow cutoff feature allows the meter to be programmed so that
the often-unsteady output from a differential pressure transmitter, at low
flow rates, always displays zero on the meter.
The cutoff value may be programmed from 0 to 999999. The meter will
display zero below the cutoff value. Programming the cutoff value to
zero disables the cutoff feature.
Totalizer Count Up/Down (
Count
)
If the Total option is enabled, the totalizer count up/down menu may be
used to program the total and grand total to either count up from 0 when
reset or count down from a programmed value when reset. Total and
grand total may have their countdown numbers programmed individually
from 0 to 999999.
Analog Output Programming (
AoutPr
)
The
Analog Output Programming
menu is used to program the behavior
of the 4-20 mA output. The following parameters and functions are
programmed in this menu:
1. Source: Source for generating the 4-20 mA output (e.g. PV)
2. Overrange: Analog output value with display in overrange condition
3. Underrange: Analog output value with display in underrange condition
4. Break: Analog output value when loop break is detected
5. Max: Maximum analog output value allowed regardless of input
6. Min: Minimum analog output value allowed regardless of input
7. Calibrate: Calibrate the internal 4-20 mA source reference used to
scale the 4-20 mA output