45 ST 800 Pressure Transmitter User’s Manual Revision 15
Language Selection
[20LNGSEL]
Standard display language selection:
Select English or Russian option to
show display in selected language.
Press to
enter menu
selection
Menu to
select from
list
to enter
Transfer Function
[21TXFRFN]
Pressure Transfer function: Select
the pressure transfer function for
calculated output: Linear: (output
scaled linearly per configured range)
Square Root: (output scaled as
square root conversion per
configured range - for flow
measurements)
Press to
enter menu
selection
Menu to
select from
list
to enter
Low Flow Cut Off
Mode
[22CUTFMD]
Low Flow Cutoff Mode:
For Square Root (Transfer function)
configurations only, choose the
operating mode to determine the low
flow cutoff breakpoint: Dual slope:
(breakpoint determined by dual slope
calculation) User configuration:
(breakpoint defined by user)
Zero Flow: sets analog output to
4mA when square root / flow is
below user defined flow cutoff
value.
Note: Sets loop output to low
saturation when the differential
pressure is below -10%Flow in Zero
Flow.
Press to
enter menu
selection
Menu to
select from
list
to enter
Low Flow Cut Off
Breakpoint
[23%FLOW]
When “User Configuration” is
selected for Low Flow Cutoff
Mode, enter the desired breakpoint
value.
Press to
enter menu
selection
to select
number.
to enter and
shift to the
next digit to
the right
SP Zero Corrects
[24SPZRO]
Corrects the static
pressure to a zero- value
psi for DP transmitters
only
Performs the correction of measured
static pressure value to a value of
zero psi.
Executing this selection corrects
Static Pressure Zero based on the
input static pressure.
The live value of the static pressure
input is shown on this display so the
user can easily see the result of the
correction.
Press to
enter menu
selection
Press to
initiate action