Siemens Sitrans LR250 Instruction Manual page 7

Abbreviations and Identifications
Short form
A/D
CE / FM / CSA
C
i
D/A
DAC
DCS
dK
FV
ESD
HART
I
i
I
o
IS
L
i
mH
µF
µs
PED
pF
ppm
PV
SV
TVT
U
i
U
o
7ML19985JE01
Long Form
Analog to digital
Conformité Européenne / Factory Mutual /
Canadian Standards Association
Internal capacitance
Digital to analog
Digital Analog Converter
Distributed Control System
dielectric constant
Full Vacuum
Electrostatic Discharge
Highway Addressable Remote Transducer
Input current
Output current
Intrinsically Safe
Internal inductance
milliHenry
microFarad
microsecond
Pressure Equipment Directive
pico Farads
parts per million
Primary Variable
Secondary Variable
Time Varying Threshold
Input voltage
Output voltage
SITRANS LR250 (HART) – INSTRUCTION MANUAL
Description Units
safety approval
F
control room
apparatus
mA
mA
safety approval
mH
-3
10 H
-6
10 F
-6
10 s
safety approval
-12
10 F
measured value
equivalent value
sensitivity
threshold
V
V
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