NIVELCO EasyTREK SP-500 Pro, Инструкция по установке и программированию

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OBSTACLES
There must be no interfering objects (cooling pipes, bracing
members, thermometers, etc.) in the sensing cone of the
ultrasonic beam.
Note: The programming of the EasyTREK allows one static
object that would otherwise disturb the measurement to be
masked out (see P29 of programming).
FOAM
Foam on the liquid's surface may make ultrasonic level metering
impossible. Find a location where the foaming is the thinnest
(the device must be placed as far from liquid inflow as possible),
or a stilling pipe or a well must be used.
WIND
Intensive air (gas) flow near the ultrasonic cone must be avoided. A
strong gust of wind may blow the ultrasound away. Devices with
lower measuring frequency (40, 20 kHz) are recommended.
FUMES / VAPOURS
Fume or gases above the surface of the measured liquid in closed
tanks, especially ones exposed to direct sunlight, may strongly reduce
the nominal measuring range of the ultrasonic device. Therefore, do
consider this phenomenon when selecting a device.
Devices with a lower measuring frequency (40 & 20 kHz) are
recommended for such scenarios.
3.1.1 R
ISER
The riser must be rigid; the lower rim, where the ultrasonic beam leaves the pipe, must be rounded (r).
L
Dmin
SP

–59

SP

–58

SP

–57

150 50 60 60
200 50 60 75
250 65 65 90
300 80 75 105
350 95 80 120
L
Dmin
SP

–54

90 130
200 140
350 150
500 160
Contact NIVELCO regarding this value.