Siemens SITRANS L Operating Instructions Manual page 268

Index
loop voltage vs. loop resistance
power supply requirements, 41
loss of echo (LOE)
explanation, 240
Loss of Echo (LOE)
explanation, 241
LUI (Local User Interface)
contrast adjustment, 48
M
maintenance
repairs, 165
replacing antenna, 167
replacing lens, 167
Maintenance, 166
maintenance settings
Calibration Interval, 154
see Diagnostics, 145
see Remaining Sensor Lifetime, 150
Service Interval, 152
Manuals, 254
Master Reset
factory defaults, 146
measurement range
blanking via Near Range, 240
extension via Far Range, 240
Measurement Response
explanation, 237
Modifications
correct usage, 16
improper, 16
mounting
bypass requirements, 29
handheld programmer access, 28
housing construction, 24, 29
nozzle design, 26
nozzle location, 27
on vessel with obstructions, 29
sunshield recommended, 29
N
nameplate
Intrinsically Safe (ATEX/IECEx), 41
Intrinsically Safe (FM/CSA), 42
Near Range
explanation, 240
setup, 131
268
O
operating principles
cleaning, 233
Output limits
setup, 143
Output Scale
setup, 142
overview, 18
P
password protection
via AMS, 107
PED (Pressure Equipment Directive), 23, 243
performance
specifications, 178
pipe sizes, 224
flange mounting, 223, 226
polarization reference point, 29
power source
requirements, 36
power supply requirements
loop voltage vs. loop resistance, 41
pressure applications, 23
Pressure Equipment Directive, 23, 243
Process Intelligence, 233
process temperature
maximum, 241
programmer
handheld, 49
programming
via the handheld programmer, 50
propogation factor
values, 131
Q
Qualified personnel, 17
Quick Start Wizard
via LUI, 54
R
raised face flange markings, 223, 225
reading erratic
troubleshooting, 177
reading incorrect
troubleshooting, 177
reading response slow, 177
Remote Lockout, 158
SITRANS LR250 with FOUNDATION FIELDBUS
Operating Instructions, 09/2021, A5E32221411-AH