Limaco ULM-3D Series, Руководство по эксплуатации и установке

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3.3 Product identification
The device is identified in one of the possible ways:
- as per the data specified on the device nameplate;
- as per the attached product data sheet;
- upon request to the manufacturer with the indication of level transmitter serial
numbers.
A standard level transmitter nameplate contains the following data for device identi-
fication and application:
- manufacturer's logo;
- device type;
- serial number;
- year of manufacture;
- IP rating;
- explosion protection marking;
- name of the certification body and number of the certificate of conformity;
- permissible ambient temperature;
- supply voltage;
- output signals.
An example of a standard nameplate is shown in Fig. 3.3
ОС ООО «ХХХ»
№ ТС RU C-RU.АМ02.В. Х
XXX
Fig. 3.3. Standard nameplate
Level transmitter designation system has the following form:
ULM-3D-
Х, where
Х – level transmitter version: 1 – one measuring channel, 5 – measuring channels.
3.4 Operation concept
The level transmitter is installed above the measured surface of material. The device
is mounted in an opening on the tank roof using a flange in a closed tank (Fig. 3.4),
and using a special bracket in open tanks and storage facilities. The device measures
the distance L
i
from the bottom surface of mounting flange to the product surface
for each of the measuring channels. Then the level is calculated using the formula
U
i
=H-L
i
*cos(a
i
), where H is the installation height, a
i
is the tilt angle of i-channel.
The base plane of the measuring range of level transmitter is the lower surface of
mounting flange (Fig. 3.1 item 2).
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