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1/99 SMV 3000 Transmitter User’s Manual 161
A.5 Configuration, Continued
SENSRTYP Parameter
The default sensor type for a given SMV 3000 transmitter PV is listed in
Table A-4.
Table A-4 Sensor Type Selections for SMV 3000 PVs
IF Process Variable Number is… THEN SENSRTYP is …
PV1
SPT_DP
PV2
SPT_AP *
PV3
STT
PV4
SFM
* Use SPT_AP if PV2 is measuring absolute pressure or gauge pressure.
ATTENTION
When using an SMV Model SMG170, the SENSRTYP parameter for PV2
may be set to SPT_AP, but will display a gauge pressure value that may be
negative.
PVCHAR Parameter
The PV characterization selection for each SMV transmitter PV can be as
listed in Table A-5.
Table A-5 PV Characterization Selections for SMV 3000 PVs
IF Process Variable Number is… THEN PVCHAR can be …
PV1
LINEAR or SQUARE ROOT *
PV2
LINEAR only.
PV3
LINEAR only.
PV4
LINEAR/N/A †
* Does not affect PV4 flow calculation.
† Linear is shown on detail display, but it has no meaning.
STI_EU Parameter
Select any valid Engineering Unit (EU) for PV1, PV2, and PV3, so that the
values displayed for URL, LRL, URV, and LRV on the Detail Display will
be converted to the selected EU. There is no check for mismatch of EUs,
since the transmitter sends these values as a percent of Upper Range Limit
so the value is the same regardless of EU.
NOTE: You can only select BLANK or CM_HR as EU for PV4. Keep in
mind, that the URL, LRL, URV, and LRV are displayed in “base”
units of tonnes per hour (t/h) or cubic meters per hour (m
3
/h) as
applicable.
Continued on next page