Honeywell SMV 3000 User Manual page 67

6.6 DPConf Configuration - PV1,
LRV and URV
PV1 (DP) Range
Values
ATTENTION
1/99
The Lower Range Value and the Upper Range Value fields for PV1 are
found on the DPConf tab card.
Set the LRV (which is the process input for 4 mA dc* (0%) output) and
URV (which is the process input for 20 mA dc* (100%) output) for the
differential pressure input PV1 by typing in the desired values on the SCT
configuration .
LRV = Type in the desired value (default = 0.0)
URV = Type in the desired value
(default = 100 inH2O@39.2 °F for SMV models SMA125
and SMG170)
(default = 10 inH2O@39.2 °F for SMV models SMA110)
* When transmitter is in analog mode.
SMV 3000 Transmitters are calibrated with inches of water ranges
using inches of water pressure referenced to a temperature of 39.2 °F
(4 °C).
For a reverse range, enter the upper range value as the LRV and the
lower range value as the URV. For example, to make a 0 to 50 inH 2 O
range a reverse range, enter 50 as the LRV and 0 as the URV.
The URV changes automatically to compensate for any changes in the
LRV and maintain the present span (URV – LRV).
If you must change both the LRV and URV, always change the LRV
first.
SMV 3000 Transmitter User's Manual
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