Technical information

7500 RTG
4 Varec, Inc.
Installation Guidelines
Configuration
The Radar Tank Gauge is commissioned by entering an
empty distance E (=zero) and a full distance F (=span)
that correspond with 4mA and 20mA current output.
A linearization table (max. 32 points) which can be
configured locally or remotely provides engineering
units and a linear output signal for spheres, horizontal
cylindrical tanks and vessels with conical outlet.
On-site operation and configuration is performed
using:
• The built in display and operating module VU331
• A Personal Computer, service adaptor (FXA193) and
"ToF Tool - FieldTool Package" operating software.
Remote operation and configuration can be performed
using:
• A Personal Computer, service adaptor (FXA195) and
"ToF Tool - FieldTool Package" operating software.
• A Personal Computer, TSM (Tank Side Monitor) and
the operating software FuelsManager.
Measuring Range
The usable measuring range depends on the size of the
antenna, the reflectivity of the medium, the mounting
location, and eventual interference reflections.
The following tables describe the groups of media as
well as the achievable measuring range as a function of
application and media group. If the dielectric constant
of a medium is unknown, it is recommended to assume
media group B to ensure a reliable measurement.
Media
group
DC
(
εr)
Examples
A
1.4...
1.9
non-conducting liquids, e.g. liquefied gas
(LPG). For more information please contact
your Varec representative.
B
1.9...
4
non-conducting liquids, e.g. benzene, oil,
toluene, white products, black products,
crudes, bitumen/asphalts, …
C
4...10 e.g. concentrated acids, organic solvents,
esters, aniline, alcohol, acetone, …
D
> 10 conducting liquids, e.g. aqueous solutions,
dilute acids and alkalis