Honeywell SMV800 - Page 36

Page 24 SMV800 Modbus User's Guide Revision 1.0
Flow Unit
See Table 2-3 and Table
2-4 for Mass Flow and
Volume Flow units
Allows configuring Flow unit.
All the units are self-Explanatory.
Custom Unit:
When this unit is selected, Tools will populate
Flow Custom Tag
Flow Base Unit : Base unit is unit from which
custom unit is derived
Flow Conver. Factor: Enter a numeric value
that represents the number of base units per
one
custom unit.
Example:
Flow Custom Tag: MyNewUnit
Flow Base Unit: g/sec
Flow Conver Factor: 0.5 (means 0.5 g/sec = 1
Custom Unit)
Flow Rate = 50 g/sec
Flow Rate in “MyNewUnit” will be = (50/0.5)
MyNewUnit
Write Flow Range values
 Flow LRV
 Flow URV
Write a new Lower Range Value and Upper
Range Value for the Flow input.
Flow can be ranged anywhere between –URL
to +URL so that the span is <= URL (i.e.,URV
– LRV should be <= URL)
Flow Cutoff Low Lmt
The lower value for Low Flow cutoff. When the
flow drops below this value, the flow output will
be forced to 0%.
Flow Cutoff High Lmt
The upper value for Low Flow cutoff. The flow
will not exit the low flow cutoff state (0% flow)
until the flow exceeds this value.
Write Flow CutoffLimits
 Flow Cutoff Lo Lmt
 Flow Cutoff Hi Lmt
Allows the user to configure new values for the
low and high cutoff limits for the Low Flow
Cutoff option