C2AI HD35 Manual de usuario
Product Information
Wireless data loggers
REF. HD35
Wireless data loggers
Wi-fi / Ethernet
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Greenhouses
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HD35 Wireless data logger
One system
Unlimited applications
Museums - Buildings - Hall
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Product information Wireless data loggers
3
Introduction to the wireless data recording systems
A data recording system is a set of instruments which allows measuring and storing the values of certain physical quantities, such as
temperature, humidity, pressure, solar radiation, etc.
A data recording system is generally made of:
- Sensors: they are placed at the measuring points and convert the values of the physical quantities into electrical analog or digital
signals.
- Acquisition system: it reads and logs the electrical signals outgoing from the sensors. If the acquisition system is digital, the ac-
quired values are kept in the system’s internal memory until the memory is full.
- PC: the transfer of data from a digital acquisition system to a PC allows storing the measured values even after the internal memory
of the acquisition system is full. The PC also allows processing and analyzing the acquired values.
SENSOR
SENSOR
ACQUISITION
SYSTEM PC
Data recording system
Connecting the components of the system
The components of the recording system can be connected in two different ways:
- Wired connection
- Wireless connection by radio frequency transmission
The type of connection depends on various factors, such as:
- the distance among the various components of the system;
- ease of installation;
- cost of installation;
- possibility to easily modify the system;
- electromagnetic interferences in the environment of installation.
Advantages of the wireless connection
- Quick and easy installation: as it is not necessary the laying of cables and conduits, a wireless system is installed much more easi-
ly and quickly than a wired system, especially when the components are at a great distance from one another.
- Reduction of installation costs: the absence of cables allows a considerable saving in cost of material and labor.
- Flexibility of the system: the absence of fixed links between the various parts allows moving the system components at any time
without problems.
- Low maintenance: the cables are subject to deterioration over time, the absence of cables reduces the maintenance costs of the
system.
Contraindications of the wireless connection
The operation of a wireless system can be difficult in environments with excessive electromagnetic interferences (in which case a wired
shielded connection may be preferable) or in areas particularly shielded that hinder the radio transmission between the parts of the
system.
Product information Wireless data loggers
Product information Wireless data loggers
Radio frequency transmission in wireless systems
In the case of wireless connections, the acquisition system is made of a radiofrequency transmitting part and a radiofrequency receiving
part:
- Transmitting part: positioned near the sensor, it transmits the measured values to the receiving part. The transmitter part is normally inte-
grated in the measuring instrument to which the sensor is connected.
- Receiving part: positioned close to the PC, it receives the measured values and transmits them to the PC. The receiving part is usu-
ally indicated by the terms Base Unit or Access Point.
SENSOR
SENSOR
ACQUISITION
SYSTEM
TRANSMITTING
PART
ACQUISITION
SYSTEM
RECEIVING
PART
RF PC
Wireless data recording system
The transmitter part of the acquisition system can be unique for all the sensors or can be made of multiple transmitters, each of which
sends the measurements of some of the sensors. The receiving part of the system is the same for all sensors.
Wireless system
The basic HD35… series wireless system is made of:
- One or more devices of the series HD35ED…: the devices HD35ED... acquire the values measured by integrated or external sen-
sors connected via cable. The data are both stored in the internal memory of the device and transmitted via radio to the receiving
unit (base unit / Access Point). Most of the devices HD35ED… work with a battery and do not require power connections.
- Base Unit (Access Point) HD35AP…: it receives the measured values from all devices HD35ED... and sends them to the PC. The base
unit HD35AP… has an internal battery with limited autonomy, therefore it has to be powered externally by connecting it to a power
supply (optional) or to the USB port of the PC.
- HD35AP-S Software: once installed in a PC, it allows downloading and viewing the data, entering the data into a database and
configuring the system. The software can be downloaded free of charge
from the website.
Sensors and
acquisition system
with transmitting part
Sensors and
acquisition system
with transmitting part
Sensors and
acquisition system with
transmitting part
Sensors and
acquisition system with
transmitting part
Receiving part
(Base Unit/Access Point)
PC
PC
Receiving part
(Base Unit/Access Point)
Repeater
HD35RD...
HD35ED...
HD35ED...
HD35ED...
HD35RE...
RFRF
RF
RF
RF
HD35AP...
HD35AP...
Wireless data recording system
System configuration
The HD35… series wireless system can be fully configured through the basic software HD35AP-S. The RF communication
between the devices HD35ED... and the base unit HD35AP... is bi-directional, that is to say that it allows the base unit HD35AP... to transmit
to the devices HD35ED... all the changes in operating parameters generated by using the software HD35AP-S:
- The devices HD35ED… transmit the measured values to the base unit HD35AP…
- The base unit HD35AP… transmits the changes in the operating parameters to the devices HD35ED…
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Product information Wireless data loggers
5
Choosing the base unit HD35AP…
The base unit HD35AP... is available in various versions. The choice of the base unit is independent of the type of measure to be accom-
plished, but it must be carried out according to how we want to connect the unit to the PC, PLC or Internet:
- USB connection, available in all the HD35AP… versions. The base unit should be installed near the PC and requires an external
power by connection to a power supply (optional) or to the USB port of the PC.
- RS485 with MODBUS-RTU protocol connection, available in HD35APS and HD35APR. This version is particularly suitable for con-
nection to a PLC via a multi-point RS485 network. It requires external power by connection to a power supply (optional).
- Ethernet connection, available in HD35APW and HD35APR. This version is suitable if there is a wired local network. It is not neces-
sary to install the unit near the PC, but it is sufficient to set it up near an access point in the local network. It requires external power by
connection to a power supply (optional).
- Wi-Fi connection, available in HD35APW. This version is suitable if there is a wireless local network. It requires external power by con-
nection to a power supply (optional).
- GSM/GPRS connection, available in HD35APG and HD35APGMT, or 3G/GSM/GPRS connection, available in HD35AP3G and
HD35AP3GMT. These versions are designed to operate even in the absence of a connection to the PC, being able to transmit
the data via e-mail, FTP or HTTP (Cloud) via the GSM/3G network. They are therefore suitable for monitoring data in unattended
installations and mobile installations (for example, during freight). They require an external power by connection to a power supply
(optional).
Choice of the HD35ED… devices
The devices HD35ED... that acquire measures are available in many versions which differ one to the other in the type of measures that
can be realized. The choice must be therefore made according to the following criteria:
- the type of variables that are meant to be measured;
- the need to have sensors connected by cable to the instrument or sensors integrated in the instrument;
- the need of having or not the LCD display in the instrument to see the measures and the RF signal quality directly on the instru-
ment display or configure the device via the front keypad;
- the fact that the measurement zone is in an indoor or outdoor environment (for example, for the detection of meteorological data in an
external environment, it is convenient to choose a model in waterproof housing with screen protection from solar radiation).
How many HD35ED… devices can be used
In the data recording system, it is possible to use many HD35ED… devices simultaneously, all of them communicating with the same
base unit HD35AP…
The number of devices to be used depends on:
- the number and type of quantities to be measured;
- the dislocation of the areas where the measures have to be carried out;
Examples:
- If it is requested to detect the temperature in two refrigerated cells placed side by side, it can be used a single device that can simulta-
neously measure two temperatures by using external probes (for example, HD35EDN/2TC).
- If it is requested to measure the temperature in two separate rooms or in two areas of a freight depot away a few dozen meters
from each other, it is necessary to use two separate devices (for example, two HD35EDNTV with integrated sensor).
It is possible to easily add to the system or remove from the system one or more devices HD35ED… at any time.
Product information Wireless data loggers
How to increase wireless area coverage
In order to increase the distance between the HD35ED... devices and the HD35AP...base unit, install one or more RF signal repeaters
HD35RE… between the devices and the base unit.
Sensors and
acquisition system
with transmitting part
Sensors and
acquisition system
with transmitting part
Sensors and
acquisition system with
transmitting part
Sensors and
acquisition system with
transmitting part
Receiving part
(Base Unit/Access Point)
PC
PC
Receiving part
(Base Unit/Access Point)
Repeater
HD35RD...
HD35ED...
HD35ED...
HD35ED...
HD35RE...
RFRF
RF
RF
RF
HD35AP...
HD35AP...
Wireless data recording system with repeater
The repeaters are also useful to increase the distance in the presence of obstacles, for example when the HD35ED... devices and the
base unit are installed in interior spaces separated by walls of reinforced concrete, or in adverse weather conditions, if the devices are
installed in outdoor environments.
Which transmission frequency should be used
The transmission frequency of the wireless system must be one of those of free usage in the country where the system is installed. It is
important to purchase the system with the correct frequency as the transmission band cannot be changed by the end user. e
offers the following alternatives:
- 868 MHz (in compliance with the European Standard ETSI EN 300 220)
- 902-928 MHz (in compliance with FCC U.S. part 15 section 247 and Industry Canada RSS-210 standards)
- 915,9-929,7 MHz (in compliance with Japanese standard ARIB STD-T108)
Immediate alarms
The HD35… series wireless system immediately signals the exceeding of the threshold values of the measures in the fol-lowing
ways:
- By an acoustic signal generated by the buzzer inside the devices.
- By highlighting the measures with errors on the PC monitor by means of the HD35AP-S software.
- By sending an SMS to the set phone numbers (only with the base units HD35APG… and HD35AP3G…).
- By sending an alarm e-mail to the set addresses (only with the base units HD35APG…, HD35AP3G…, HD35APW and HD35APR).
- By activating additional signaling or actuators via the optional remote alarm module HD35ED-ALM with relay outputs.
The system allows setting two alarm thresholds for each measured variable (lower threshold and upper threshold). The alarm is signaled if the
measured value falls below the lower threshold or rises above the upper threshold. The alarm hysteresis and delay can be configured for
each variable.
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Product information Wireless data loggers
7
HD35AP… – HD35RE – HD35ED…
The wireless data logging system
The wireless data logging system allows the monitoring of many physical quantities in various application fields. The data loggers
are available for the monitoring of:
- Temperature
- Humidity
- Atmospheric pressure and differential pressure
- Illuminance (lux)
- UVA, UVB and UVC irradiance
- Carbon monoxide (CO)
- Carbon dioxide (CO2)
- Solar radiation
- Rainfall quantity
- Wind speed and direction
- Leaf wetness
-Soil volumetric water content
- Level
- WBGT index
The models that measure relative humidity and temperature calculate derived humidity quantities. The calculated quantities depend on
the model and can be: Dew Point, wet bulb temperature, absolute humidity, mixing ratio, partial vapour pressure.
Depending on the model, the external measuring probes are connected to the data logger via M12 connector or screw terminal header.
Some of the models are equipped with built-in sensors.
Agriculture
Weather Museums
Photovoltaics
Industry
Warehouses
Food services
Carriage of goods
Product information Wireless data loggers
Transit area
Production Offices
Labs
Quality controlMonitoring room
Warehouse
Data logger
Data logger
Receiving unit
Data logger
Data logger
Data logger
Data logger
Exemple of monitoring of an environment composed of several
distinct areas
Example of application
Data loggers with terminal header inputs are available
for the connection of:
- Transmitters with 0÷20 or 4÷20 mA current output
and 0÷50 mV, 0÷1 V or 0÷10 V voltage output
- Pt100 / Pt1000 and K, J, T, N, E type thermocouple
temperature sensors
- Sensors with voltage free contact output (counting
of switchings) or potentiometric output
- Sensors with RS485 MODBUS-RTU output
This allows extending the monitoring capability of the
system to countless other quantities, in addition to
those listed above.
Typical application fields of the wireless data
logging system are:
- Food services (refrigerated containers, cold storage,
production and carriage of food)
- Health (storage of medicines, vaccines, blood, moni-
toring of incubators and operating rooms)
- Greenhouses and agriculture
- Environmental analyses (Air quality, meteorology
and hydrology)
- Monitoring of solar panels
- Museums and document archives
- Transportation of perishable goods
- Air conditioning
- Clean rooms
- Laboratories
- Industrial processes
- Buildings, offices, schools
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Product information Wireless data loggers
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Data logger
Data logger
Data logger
Receiving
base unit
Database
PC
Data logger
Data logger
Data logger
Data logger
Data logger
Receiving
base unit
Receiving
base unit
Database
PC
Exemple of monitoring of an environment composed of several distinct areas
Example of monitoring of multi-storey buildings:
the data loggers upstairs communicate with a repeater; the repeater communicates with the base unit downstairs.
SINGLE HD35… NETWORK
ON A SINGLE FLOOR
SINGLE HD35… NETWORK
ON MORE FLOORS
Product information Wireless data loggers
Data logger
Data logger
Data logger
Data logger
Receiving
base unit
Receiving
base unit
Database
PC
Monitoring of perishable (food, medicines, etc.) or fragile goods during transport
Example of monitoring of multi-storey buildings:
use of a base unit for each oor; the base unit upstairs is connected to the PC via local network (Ethernet or Wi-Fi).
Datalogger Datalogger
Transport
Warehouse
and oce
Data download
Receiving base unit
Goods
loading
Goods unloading
INSTALLATION OF MORE HD35… NETWORKS
10
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