SIAP+MICROS t021 TLU Guide

t021 TLU
Ultrasonic Level
User Manual and maintenance

User manual and maintenance
t021-di TLU.docx
26/10/2023 2Vers.: 1.0
Summary
1Introduction ................................................................................................................................................ 3
2Technical specificaion ................................................................................................................................ 4
2.1 Operation scheme ............................................................................................................................. 5
3Installation and maintenance ..................................................................................................................... 6
3.1 Installation.......................................................................................................................................... 6
3.2 Maintenance ...................................................................................................................................... 6
4Electrical connection .................................................................................................................................. 7
4.1 Pinout del connettore ......................................................................................................................... 7
4.2 Connection cable ............................................................................................................................... 7
4.3 Data readinding in serial (RS485 Modbus)........................................................................................ 7
4.3.1 RS485 Modbus mode .................................................................................................................... 7
5Generic information ................................................................................................................................... 8
5.1 Safety................................................................................................................................................. 8
5.2 Appropriate use of the equipment ..................................................................................................... 9
5.3 Storage .............................................................................................................................................. 9
5.4 Moving ............................................................................................................................................... 9
5.5 Disposal information .......................................................................................................................... 9
6Revision history ....................................................................................................................................... 10

User manual and maintenance
t021-di TLU.docx
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1Introduction
Water level monitoring represents a fundamental issue when it comes to deal with the assessment of
hydrological risks and the management of water resources. TLU ultrasonic hydrometric sensor is undoubtly an
effective, affordable and reliable solution. It ensures excellent accuracy standards, thanks to a self-correction
system of the hydrometric measurement. Indeed, by means of an integrated temperature sensor, it can easily
take into account the variation of the speed of sound as a function of the density of the air. The measurement
principle is based on the emission of an ultrasonic frequency impulse towards the surface to measure and on
the subsequent reception of the reflected signal. TLU is a non-contact instrument. Furthermore, it allows to
speed up and simplify the installation and maintenance steps. The sensor is supplied with power and signal
cable (12m).
Ordering Codes:
Range 0÷8 m: ..........................................................t021g-TLU08-IVS
Range 0÷16 m: ........................................................t021h-TLU16-IVS

User manual and maintenance
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2Technical specificaion
Measurement performance
Measurement range (TLU08)
0.6 ÷ 8m
Measurement range (TLU16)
0.8 ÷ 16m
Accuracy
±1 cm
Sensibility
0.5 cm
Beam width (3dB)
12° ± 2°
Operating conditions
Temperature
-20 ÷ +65 °C
Humidity
0 ÷ 100 RH%
Outputs
TLU08
Tension
0 ÷ 2 V ↔0 ÷ 10 m
Current
4 ÷ 20 mA ↔0 ÷ 10 m
RS485 MODBUS
Temperature, Water levell
TLU16
Tension
0 ÷ 2 V ↔0 ÷ 20 m
Current
4 ÷ 20 mA ↔0 ÷ 20 m
RS485 MODBUS
Temperature, Water levell
Power supply and Consumption
Voltage supply (non-natural output versions)
10 ÷ 16 Vdc
Power consumption
Min
Typical
Max
4 ÷ 20 mA
7
30
0 ÷2 V / RS485 MODBUS (TLU08)
1
0 ÷2 V / RS485 MODBUS (TLU16)
1.5
Potenza pilotaggio capsula (di picco)
14.4 W
Mechanical specifications
Protective body
Plastic material (ABS), aluminium and stainless
steel screws
Electrical connections
IP67 / 7 pole male connecto

User manual and maintenance
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Dimension: TLU08 TLU16
H–maximum heigh 335mm 400mm
D1 –fixing diameter 40mm
D2 –maximum diameter 210mm
Elementi:
A–connector
B–support stem
C–ultrasonic capsule protection and air
temperature sensor
D–central body in aluminium
Weight:
TLU08: 1.6kg
TLU16: 2.3 kg
2.1 Operation scheme

User manual and maintenance
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3Installation and maintenance
3.1 Installation
The TLU sensor, in all its versions, can be installed
on special Siap+Micros arms equipped with a
terminal plate for the attachment of 40mm diameter
U-bolts (see the example in the image to the side).
The length of the arm used can vary according to
the measurement needs.
N.B.: the sensor has a 12° measurement cone, when choosing the site or installation method it is necessary
to take this into account, taking care not to have any obstacles inside this cone so as not to mistakenly detect
the obstacle.
3.2 Maintenance
The sensor has no particular maintenance requirements. For a correct and constant accuracy of the
measurement, the area below the sensor inside the measuring cone (12°) must be kept clean and free from
obstacles, even temporary ones.
However, it is advisable to periodically check that it is working properly in the factory with sample instruments.

User manual and maintenance
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4Electrical connection
4.1 Pinout del connettore
Pin
Signal
1
A-RS485
2
B-RS485
3
+0÷2 Vdc
4
+4÷20 mA
5
-4÷20 mA
-0÷2 Vdc
6
Vcc
7
GND
4.2 Connection cable
The connection cable supplied with the sensor is made with circular connectors with housing, 6 x 22 mmq + 2
x 2.5 mmq shielded cable and ferrules for connection to the data logger terminals. The braid is connected to
the general ground lead
Pin
1
2
3
4
5
6
7
7
Cable
Blue
White
Green
Black
Yellow
Blue
(2.5mmq)
Brown
(2.5mmq)
Red
Segnali
A-RS485
B-RS485
+0÷2 Vdc
+4÷20 mA
-4÷20 mA
-0÷2 Vdc
Vcc
GND
GND
4.3 Data readinding in serial (RS485 Modbus)
Sensors with RS485 Modbus output send data only upon specific request from the PC, data logger or PLC.
Below are the correct communication parameters of the device performing the interrogation.
4.3.1 RS485 Modbus mode
Serial port settings: 9600 baud, no parity, 8 data bits, 1 stop bit
Compatible with ModBus RTU protocol, supported functions: “03 – read Holding Registers” and “04 – Read
Input Registers”.
Data type: “2 registers swapped float IEEE 754 in the form CDAB where A is the most significant byte of the
float and D is the less significant byte of the float (swapped float)”.
ID
Registers
Units
Reg. 1-2
Reg. 3-4
Reg. 5-6
Reg. 7-8
Reg. 9-10
Reg. 11-12
Reg. 13-14
21
3
m
-
Distance from sensor
-
-
-
Diagnostic
Supply Voltage

User manual and maintenance
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5Generic information
The qualitative level of our instruments is the result of a continuous evolution of the product. This may cause
differences between what is reported in the manual and the instrument you have purchased.
Siap+Micros S.p.A. reserves the right to modify without notice technical specifications and dimensions to adapt
them to the needs of the product.
5.1 Safety
Please read these safety instructions carefully before using this product:
•The warranty will be void if the product is used differently from the instructions described in this manual.
•Any sign of tampering will void the warranty
•Use the devices only according to the instructions (environmental management, operation, wiring,
installation, etc.) provided in this manual
•The correct and safe operation of the device can only be guaranteed if the transport, storage, operation
and management of the device are compliant. This also applies to product maintenance.
•The device shall not be exposed to aggressive chemicals or solvents that could damage the plastic
casing and/or corrode the metal parts.
•Maintenance should only be performed by qualified and well trained personnel.
It is appropriate to carry out a careful risk assessment in relation to the context of installation and use of the
device by the installer considering the possible meteorological station in its complexity without being limited to
the sensor.
The instruments must be installed according to the rules of the trade, with equipment that complies with
applicable regulations and using supports correctly sized by qualified technicians and designed for the specific
purpose.
During installation operations, check the suitability of the surrounding environment and compliance with local
safety regulations.
The manufacturer declines all responsibility in case of failure due to negligence of the instructions, tampering,
uses not described in this manual, improper use, use by operators not trained.
Read the instructions and intended use carefully and be sure you understand before installing the device
Before starting the activities, check the integrity of the instrument to be installed, prepare the equipment
necessary for the work and wear the necessary PPE.
Take adequate measures to prevent the access of foreign personnel (untrained and uninformed) during the
installation, maintenance or replacement of the instrument.
Take precautions to avoid falling objects, both during the installation phases and during the operation of the
instrument.
Do not perform any activity in bad weather conditions.

User manual and maintenance
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During maintenance, particularly if the station is not frequented, visually check for the absence of dangerous
insects and, if not, use suitable insecticides.
Consider the presence of any animals near the station, if so, pay attention to them.
Use only SIAP+MICROS original spare parts.
The instrument is not classified suitable (according to Directive 2014/34/EU) for use in atmospheres with
potential explosion risk pursuant to Directive 99/92/EC.
SIAP+MICROS strives to minimize health and safety risks in all phases of the instrument's life, including
installation, use, maintenance, decommissioning and disposal.
5.2 Appropriate use of the equipment
Use the instrument for its intended purpose, do not use it for any other purpose or cause malfunctions and/or
damage.
5.3 Storage
If you do not plan to use the equipment for an extended period of time (at least one year) disconnect all cables
from the equipment, place it in a clear plastic bag along with a bag of desiccant salts and seal the bag with
tape. Put appropriate indication on the bag of the contents and weight of the equipment by inserting the wording
"HANDLE WITH CARE".
Store the instrument in an environment with a temperature between 0°C and 60°C with a humidity not
exceeding 80%. Make sure that the instrument is stored in a stable position and that it cannot be damaged or
moved by inexperience or carelessness. Do not stack other tools or weights. Do not place the instrument on
top of other instruments and in any case ensure the solidity and stability of the underlying support.
Non esporre, stoccare lo strumento in ambienti con presenza di vapori e/o gas corrosivi.
5.4 Moving
In order to avoid any damage to the device during transportation, please keep it in upright position without
shaking.
5.5 Disposal information
Electrical and electronic equipment marked with specific symbol in compliance with 2012/19/EU
Directive must be disposed of separately from household waste. European users can hand them
over to the dealer or to the manufacturer when purchasing a new electrical and electronic
equipment, or to a WEEE collection point designated by local authorities. Illegal disposal is
punished by law.
Disposing of electrical and electronic equipment separately from normal waste helps to preserve natural
resources and allows materials to be recycled in an environmentally friendly way without risks to human health.

User manual and maintenance
t021-di TLU.docx
26/10/2023 10 Vers.: 1.0
6Revision history
The following table shows the description of the changes made to this document.
Version
Date
Updates
1.0
05/06/2023
Current version of the document.
All the information content in this document are the current available at the printing phase. Siap+Micros S.p.A. reserve the rights to change
the specifications without any advance notice