18
Saab TankRadar L/2
US Version. Seventh edition, June 1995
Installation Manual
3.4
Description of the Still Pipe Gauge, RTG 2940
The Still Pipe Gauge is used on tanks with still pipes and with all
products suited for still pipes.
The gauge uses a low-loss radar propagation mode which virtu-
ally eliminates the influence of the still pipe condition. Measure-
ment is made with highest accuracy even when the pipe is old,
rusty and covered with deposits.
The Still Pipe Gauge fits 6", 8", 10" and 12" pipes. It can be
mounted on an existing still pipe and there is no need to take the
tank out of operation during installation.
See also chapter 10.3 for installation requirements for the Still Pipe
Gauge.
3.4.1
Installation Data for RTG 2940
Operating temperature in tank
Max. +230
°
C (+445
°
F)
Measuring range
0 to 40 m from cone end
(0 to 131 ft.)
Pressure
-0.2 to +0.5 bar
Total weight
Appr. 20 kg (44 lbs.)
Still pipe dimension
6", 8", 10" or 12". See table 10.1
for information on schedules.
Transmitter
Head
Transition
Cone
Waveguide
Unit
Waveguide
Connection
Stand
Sealing
Weather Protection Hood
Still pipe
Figure 3.8 shows the Still Pipe Gauge.
