Reference Manual
00809-0100-4731, Rev FA
4/16/03
APEX
™
and APEX Sentry
™
Radar Gauge
Index-2
setting the language . . . . 3-8
setting the output units . . 3-11
setting the reference height 3-12
starting the main menu . . . 3-7
variables and options . . . . 3-8
K
K-Constants . . . . . . . . . . . . 3-20
L
Language . . . . . . . . . . . . . . 3-11
LCD meter . . . . . . . . . . . . . 3-25
Level Volume Variable . . . . . 3-13
Lightning
protection . . . . . . . . . . . 2-23
Loop
Setting to manual
. . . . . 3-17
Lower Null Zone . . . . . . . . . . . 3-6
Lower Range Value (LRV) . . . . 3-3
M
Main Menu
exiting
. . . . . . . . . . . . . 3-15
starting . . . . . . . . . . . . . . 3-7
Materials
return for service
. . . . . . . 1-8
Maximum Range
see Upper Range Value
Minimum Clearance
to access gauge
. . . . . . 2-20
to product level . . . . . . . . 3-3
Model 751 Field Signal Indicator 2-29
Modes
failure
. . . . . . . . . . . . . . 2-22
Mounting . . . . . . . . . . . . . . . 2-13
considerations . . . . . . . . 2-20
gauge . . . . . . . . . . . . . . 2-21
N
Noise . . . . . . . . . . . . . . . . . 2-20
Nonhorizontal Mounting Surface 2-13
Nozzle length . . . . . . . . . . . . 3-6
Null Zones . . . . . . . . . . . . . . . 3-6
O
Optional Devices . . . . . . . . . 2-29
Optional Integral Display. See Integral
display
Overvoltage Category
. . . . . . . 2-5
P
PED . . . . . . . . . . . . . . . . . . . B-1
Performance
maintenance
. . . . . . . . . . 4-3
Power
maximum consumption
. 2-33
requirements . . . . . . . . 2-24
AC . . . . . . . . . . . . 2-28
DC . . . . . . . . 2-25, 2-27
supply voltage . . . . . . . 2-25
Pressure Changes . . . . . . . . . 2-6
Pressure equipment directive . B-1
Preventive Maintenance . . . . . 4-2
Primary Variable . . . . . 3-18, 3-19
Process
characteristics . . . . . . . . 2-5
window . . . . . . . . . . . . 2-16
Processor Board . . . . . . . . . 2-22
R
Radar Gauge Selection Guide 1-4
Radar Signal . . . . . . . . . . . . . 1-5
noise . . . . . . . . . . . . . . 2-20
Range
values . . . . . . . . . . . . . 3-19
Reference Gauge Height 3-12, 3-13,
3-18
Reference Line . . . . . . . . . . . 3-2
Removing the Housing from the Flange
4-10
Rerange . . . . . . . . . . . . . . . 3-24
Return of Materials . . . . . . . . 1-8
Rotating the Housing . . 2-21, 4-10
RTD . . . . . . . . . . . . . . 2-32, 3-20
S
Safety Considerations . . . . . . 1-7
Security Write Protection . . . 2-23
Service
return of materials
. . . . . . 1-8
Setup
Basic
. . . . . . . . . . . . . . 3-21
Strapping Table . . . . . . . . . . 3-19
Switch Bank . . . . . . . . . . . . 2-23
Switch Settings . . . . . . . . . . 2-23
T
Tank Dimensions . . . . . . . . . 3-19
Tank Type . . . . . . . . . . . . . . 3-19
Telecommunications agency require-
ments . . . . . . . . . . . . . . . . . . 2-4
Temperature Changes . . . . . . 2-6
Temperature Sensor (RTD) . 2-32
3-wire RTD . . . . . . . . . . . . . 2-32
Tightening Torque . . . . . . . . 2-17
Time-Out
Local Operator Interface . 3-7
Tor q u e . . . . . . . . . . . . . . . . 2-18
Transient Protection . . . . . . . 2-23
Transmitter Units 3-10, 3-18, 3-19
Turbulence . . . . . . . . . . . . . . 2-6
Twisted and Shielded Pair Wiring 2-24
U
Units . . . . . . . . 3-10, 3-18, 3-19
Upper Null Zone
definition
. . . . . . . . . . . . .3-6
Upper Range Value (URV) . . . .3-3
V
Vapors . . . . . . . . . . . . . . . . . .2-6
Variable Mapping, re-map . . .3-19
Vessel Characteristics . . . . . . .2-7
Voltage
power supply
. . . . . . . . .2-25
Volume
coefficients
. . . . . . . . . .3-20
configuration . . . . . . . . .3-18
units . . . . . . . . . . . . . . .3-19
Vortices . . . . . . . . . . . . . . . . .2-6
W
Waveguide . . . . . . . . . . . . . . .1-5
Window . . . . . . . . . . . 2-16, 2-17
alignment . . . . . . 2-17, 2-19
Wiring
optional devices
. . . . . . . 2-29
Wiring diagrams
Bench hook-up
. . . . . . . . 3-17
Field hook-up . . . . . . . . .3-17
Z
Zones
null
. . . . . . . . . . . . . . . . .3-6
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