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 Updated: 13 Nov 2018


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  • Wind speed and direction, U-V Cartesan components of wind speed,

  • Relative Humidity and Temperature (optional, code '17'),

  • Diffuse Solar Radiation
    (optional, code 'P'),

  • Barometric pressure
    (optional, code '4').

All models are equipped with compass.

RS232, RS485, RS422 and SDI-12 serial interfaces are available with NMEA, MODBUS-RTU and SDI-12 communication protocols.

All versions have two analogical outputs, both for wind speed and for direction, factory configurable among 4-20mA (standard),
0-1V, 0-5V, 0-10V, (to be specificed when ordering).

Optionally available, (ACCREDIA) ILAC-MRA traceable factory calibration.


  • The absence of moving parts minimizes maintenance

  • High sensitivity for detecting very low speeds, which are not detectable by traditional methods

  • The low power of the instrument allows installation in remote sites, with power from solar panel and battery

  • The heating option 'R' prevents the accumulation of snow and ice from forming, allowing accurate measurements in all environmental conditions

  • Fast and easy installation (on 40 mm diameter pole, optional installation kit HD2004.20), alignment facilitated by built-in compass

  • The available measurement options join together in one single, compact and lightweight instrument, the main variables of interest in weather stations

  • MODBUS_RTU output allows instrument networking

Typical applications:

  • Weather stations

  • Environmental monotoring

  • Agriculture

  • Sports facility

  • Marine and Harbour applications

  • Airports

  • HVAC

  • Construction

  • Renewable energy

  • Building automation







Under preparation

Under preparation


Software Manual



HD 52.3D

Wind speed and direction.

HD 52.3D4
Wind speed, wind direction and barometric pressure.

HD 52.3DP
Wind speed, wind direction and solar radiation.

HD 52.3DP4
Wind speed, wind direction, solar radiation and barometric pressure.


HD 52.3D17
Wind speed, wind direction, temperature and relative humidity

HD 52.3D147
Wind speed, wind direction, temperature, relative humidity and barometric pressure

HD 52.3DP17
Wind speed and direction, solar radiation, temperature, relative humidity.

Wind speed, wind direction, solar radiation, temperature, relative humidity and barometric pressure.

HD 32MT.1

The HD32MT.1 is a data logger capable of capturing and logging the values measured by a series of sensors connected to its inputs.

The data logger is completely programmable by the user and is therefore very versatile.

The supplied HD32MTLogger application software, supplied with the instrument, allows simple and intuitive programming by using graphic interfaces, without the need of learning any programming language, thus minimizing the time needed to make the system operational.

The values recorded by the instrument can be transferred to a PC by using the HD32MTLogger software. The data logger can be configured to memorize the instant value, the minimum value, the maximum value, the average value and the standard deviation of the measurements.

For measurements that require the counting of pulses, the total counted pulses can be stored. Different acquisition/recording intervals can be programmed per each input. Each recording includes acquisition date and time

The data logger has a "flash" internal memory arranged in circular mode: when the memory is full the new data overwrite the older ones.

The number of storable measurements depends on the number of sensors employed, on the type of measurement to be stored and on the fact that the sensors are required all at the same time or at different instants.

For example, with 8 sensors captured at the same time, 100,000 records can be stored, each one composed of 8 instantaneous measurements.

Data can also be directly recorded to a removable SD-type memory card with a capacity of 4 GB. The use of a memory card allows extending the memory capacity of the instrument, allowing not to loose the data when the memory is full.

Three data logger versions are available, according to the possibility of communication with the PC:

  • Basic version: the communication with the PC for data transfer or programming is done via cable connection.

  • Version with Radio Modem option: in addition to the direct cable connection to your PC,you can transfer the data and program by VHF radio using optional external radio modems.

  • Version with TCP/IP option: data transfer and programming can be done via TCP/IP via optional external Ethernet Serial Server.

All versions can be equipped with an optional GSM module to be connected externally to the instrument, through which you can send alarm SMS to mobile phones and send the recorded data by e-mail or to an FTP address.

The instrument can be connected to the most common sensors used in industrial and environmental fields, with both analog and digital output.

The typical sensors that can be connected to the instrument are:

  • sensors with analog voltage output, both unipolar and bipolar;

  • sensors with analog current output (0...20mA, 4...20mA);

  • type K, J, T, N, R, S, B, E thermocouple temperature sensors; with automatic cold junction

  • compensation by using a temperature sensor internal to the data logger;

  • Pt100/Pt1000 and NTC temperature sensors; anemometer)

  • Sensors with digital output (TTL levels), or analog (periodical), for counting measures, frequency and period (e.g. sensors for soil water content)

  • Resistors and potentiometers to measure resistance and voltage relationship (e.g. vane anemometer)

  • magnetic sensors with reed contact (e.g. open door)

  • solar radiation sensors (pyranometers, albedometers, net-radiometers, luxmeter, pyrgeometers, duration of irradiation)

  • sensors with open/close contact output (e.g. rain gauges, cup anemometers);

  • sensors with RS485 output and MODBUS-RTU protocol;

  • HD2003 and HD52.3D series anemometers.

Calculated quantities:

  • Dew Point, Heat Index, Wind Chill, Saturation Vapour Pressure

  • Custom mathematical formulas applied to the measured quantities, with arithmetic operators, logical, mathematical and trigonometric functions, control functions (IF ...THEN)

  • Reference Evapotranspiration ETo with FAO Penman-Monteith method.

There are potential-free contact alarm outputs and digital alarm outputs. The outputs are activated if the values measured by sensors connected to data loggers exceed the programmed thresholds.

The data logger is able to store and report error conditions caused by malfunction of the connected sensors, hardware or data logger during acquisition and storage. The alarm outputs can also be programmed to detect such errors.

The instrument is particularly suitable for use in weather stations, for the detection and remote transmission of climatic variables.

AP manufactures a wide range of sensors for measuring environmental variables that can be connected to the data logger, including sensors for measuring temperature, humidity, barometric pressure, wind speed, solar radiation, amount of rainfall, etc.

The data logger can be supplied with a program of measures and stores pre-installed according to specifications of the customer, in order to be operational immediately after installation of the system.

The program is installed directly to meet the required specifications when ordering. Some features of the data logger are password protected (Clock Setup, User Code Setup, Send Program, GSM Setup). If needed the password is entered by the user at the time of connection.

Power supply from 12 to 30 Vdc. The system can also be powered by a solar panel and backup battery of adequate capacity, allowing for installation in remote sites without electrical power.

An internal lithium battery keeps the date and time of the instrument in the absence of external power. The data logger can provide power to all sensors connected at its terminals.

It can signal and store when the supply voltage is below a programmable threshold and go into wait (standby) mode to low power consumption. In this mode, the datalogger interrupts the power supply to all sensors and suspends acquisitions/loggings, until the supply voltage returns at least to the minimum threshold.

HD 32MT.1







Software Manual



Connection to the display

Connection via VHF Radio Modem


Communication via local area network
with TCP/IP protocol


Communication via GSM network

Connection of sensors
The data logger is designed for the connection of a wide variety of sensors, with both analog and digital output, used in many application fields. Only to show a few examples, the connections of some devices of widespread use are illustrated.

2-wire current output transmitters

Voltage output transmitters

2-wire resistive sensors

4-wire resistive sensors (Pt100/Pt1000)

3-wire potentiometric sensors

Thermocouples/sensors with mV output

Sensors with contact frequency output

AP anemometers
Sensors with RS485 Modbus-RTU output

Sensors with digital frequency output

Acquisition of logic states

Barometric Measurement

The WBP series analogue barometers are designed both for accurate barometric measurements at room temperature and for general environmental pressure monitoring over a wide temperature range.

The range incorporates analogue barometers.
The excellent long-term stability of the barometer minimizes or even removes the need for field adjustment in many applications.

The compact WBP series barometers are ideal for data logger applications because of their low power consumption, selectable external on/off control, practical output voltage ranges and three or four wire connection capability.










The WBP series barometers use the silicon capacitive absolute pressure sensor for barometric pressure measurement applications.
The sensor combines the outstanding elasticity characteristics and mechanical stability of single-crystal silicon with the proven capacitive detection principle.

Automatikprodukter has taken this successful barometric pressure sensor and housed it in an IP65 Box complete with GORETEX® venting system to produce an outstanding all round sensor.

Rain Detector WRD 01

To detect the presence of dew or rain the WRD 01 Surface Wetness Sensor is sensitive, being able to detect a droplet of water only 1mm in diameter.

The simple loggable output allows the presence of surface moisture to be recorded - an important factor in plant disease prediction.










Rain Detector 230Vac

The sensor detects precipitation such as rain or snow within seconds and sends a message by means of a potential-free relay contact (fault relay).

This switching output may be forwarded to, for instance, ventilation or shading systems in automated greenhouses.


WRD 230








Sensitivity settings are not required. It detects even light drizzle, without giving a false rain signal in case of light dew.

Functional description
If the response threshold is exceeded, the installed fault relay trips immediately. The integrated sensor heating is also fully activated at the same time.

The automatic reset delay period begins when the sensor surface has dried (value falls below limit value plus hysteresis). It is set to approximately 5 minutes.

From the start of the reset delay period until "rain" is reported again, the sensor heating switches down to 25% of its full power.

This pre-heating prevents false rain messages due to fog or dew, for example.

The rain sensor is delivered with mast mounting hardware.

Rain Meter

The rain meter is used for measuring quantites of precipitation.
The heater-equipped version may be used for detecting rain as well as snow.

Rain water is collected in a funnel and routed towards a tilting scale.

When a certain quantity of rain water (maximum 0.2 mm) has entered the scale tilts, converting the precipitation quantity into a digital signal using a reed contact.

The reed contact of the rain quantity measuring unit is usually closed and opens in case of a pulse for a duration of 260 ms.

When registering 100% rain quantity, only tilts 5...6 times per minute, which corresponds to 1...1.2 l/m˛ rain (60...72 l/m˛ rain per hour).

Greater rain quantities are not taken into consideration.


IPSO lightning detector
IPSO is a detector of electric atmospheric discharges (lightning) based in the record of the electromagnetic field produced by lightning falls inside a radius of 30 km (18,64 miles).
IPSO has a lightweight antenna, that must be installed outside, connected to a control module through which lightning falls are registered, alarms can be programmed and batteries charge can be checked.


The APSonic is an ultrasonic alternative to conventional cup and vane or propeller wind sensors.

The APSonic combines both wind speed and direction data into one serial (or two analogue outputs), which are transmitted together with an instrument status code, confirming correct operation.

The APSonic provides accurate results in all weather conditions.

Advantages of the APSonic:

  • low start speed

  • corrosion free, UV stable material

  • no calibration required

  • robust construction

  • true 0..359° operation (no dead band)

  • wind speed and direction from a single unit

E-mail: ewert@automatikprodukter.se     

Phone: +46(0)31-287202

Mobile: +46(0)708885298



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