HD 32MT.1
4Pages

HD 32MT.1 HD 32MT.1 METEO DATA LOGGER 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 acquired 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; • 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, luxmeters, 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 Delta Ohm 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. Delta Ohm 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 from Delta Ohm 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. Technical characteristics Environmental analysis