User's Manual

Table Of Contents
Page 4 SITRANS LR 460 – INSTRUCTION MANUAL 7ML19985JM01
mmmmm
SITRANS LR 460
Programming
SITRANS LR 460 carries out its level measurement function according to the set of built-in
parameter tables. You can make parameter changes via the Siemens Milltronics
handheld programmer, a PC running SIMATIC PDM or a HART handheld communicator.
Approvals and Certificates
µF microFarad 10
-6
Farad
µs microsecond 10
-6
Second
PA
Process Automation
(PROFIBUS)
PDM
Process Device Manager
(SIMATIC)
PED
Pressure Equipment
Directive
safety approval
pF pico Farads 10
-12
Farad
ppm parts per million
PSIA pounds/square inch absolute
PV Primary Value
1
measured value
RH relative humidity
SCFM standard cubic feet/minute
SELV Safety extra low voltage
SV Secondary Value
1
equivalent value
TB Transducer Block
TV Transmitter Variable
TVT Time Varying Threshold sensitivity threshold
U
i
Input voltage V
U
o
Output voltage V
1.
The output from the Level Transducer Block can be called the Primary Value (or
Secondary Value). When it becomes the input to the AIFB, it is called the
Process Variable.
Note: Please see
Approvals
on page 9.
Short
form
Long Form Description
Units
(cont’d)