User's Manual

Table Of Contents
Page 4 SITRANS LR260 (HART) – OPERATING INSTRUCTIONS A5E32337683
mmmmm
SITRANS LR260
Abbreviations and Identifications
Short form Long Form Description Units
A/D Analog to digital
CE / FM / CSA
Conformité Européenne / Factory Mutual /
Canadian Standards Association
safety approval
C
i
Internal capacitance F
D/A Digital to analog
DAC Digital Analog Converter
DCS Distributed Control System
control room
apparatus
dK dielectric constant
ESD Electrostatic Discharge
HART Highway Addressable Remote Transducer
I
i
Input current mA
I
o
Output current mA
IS Intrinsically Safe safety approval
L
i
Internal inductance mH
mH milliHenry 10
-3
H
F microFarad 10
-6
F
s microsecond 10
-6
s
PED Pressure Equipment Directive safety approval
pF pico Farads 10
-12
F
ppm parts per million
PV Primary Variable measured value
SV Secondary Variable equivalent value
TVT Time Varying Threshold
sensitivity
threshold
U
i
Input voltage V
U
o
Output voltage V