Technical data

10 / 44  BKI 03 ATEX 027X  spa3804a0600p_06
OBSTACLES
Make sure that no objects (cooling pipes, bracing members,
thermometers etc.) protrude into the sensing cone of the ultrasonic
beam.
Remark: EasyTREK programming allows one fixed object that would
otherwise disturb the measurement to be blocked out. (see P29 of
programming).
FOAM
Foaming of the liquid surface may render ultrasonic level metering
impossible. If possible, a location should be found, where foaming is
the least (device should be located as far as possible from liquid
inflow) or a stilling pipe or well should be used.
WIND
Intensive air (gas) movements in the vicinity of the ultrasonic cone
is to be avoided. A strong draft of wind may "blow away" the
ultrasound. Devices with lower measuring frequency (40, 20 kHz)
are recommended.
FUMES / VAPOURS
For closed tanks containing chemicals or other liquids, which
creates fume/gases above the liquid surface especially for outdoor
tanks exposed to the sun, a strong reduction of the nominal
measuring range of the ultrasonic device is to be considered during
device selection. Devices with lower measuring frequency (40, 20
kHz) are recommended in these cases.
STAND-OFF
The structure of the stand off pipe should be rigid; the inner rim where the ultrasonic beam leaves the pipe should be rounded.
D
min
L
S P  – 39  S P  – 38  S P  – 3 7 
150 50 60 60
200 50 60 75
250 65 65 90
300 80 75 105

250
 D 100
L
Dmin.
D
min
L
S P  – 34 
90 *
200 *
350 *
500 *
* For values contact your distributor

350
 D 100
L
Dmin.