Delta OHM S.r.L.

Delta Ohm manufactures electronic instruments for the measuring of the following parameters: Temperature, Relative Humidity, Dew Point, Pressure, Light, Acoustics, Vibration, pH, Conductivity, Turbidity, Dissolved Oxygen, Wind Speed, Wind Direction, Solar Radiation, Soil temperature, Weather Station, Rain Gauge, Rain Detector, UVA, UVB, UVC, CO2. The company manufactures portable instruments with associated probes, data–loggers and probes for use in metrological laboratory. Delta Ohm also manufactures current and voltage loop transmitters for all industrial applications, as covered by the portable instrumentation range. Also, it has available, devices suitable for environmental and meteorological applications.

  • +39 0498977150
  • +39 049635596
  • Via Marconi 5
    Caselle di Selvazzano (PD, 35030

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Showing recent results 1 - 15 of 30 products found.

  • Albedometers

    LP PYRA 05 - Delta OHM S.r.L.

    The LP PYRA 05 albedometer measures the net global radiation, as well as the albedo of grounds (albedo is the ratio between diffuse radiation from a determined surface and the quantity of radiation that arrives on the surface). The LP PYRA 05 is manufactured mounting two LP PYRA 02 pyranometers in one housing only. The two pyranometers, one measuring the incident radiation striking the ground [ ↓ ] and the other one measuring the reflected radiation [ ↑ ] are combined in such a way to have the same sensitivity. The signals of the two pyranometers are obtained from the output cable. These signals can be processed to get the desired physical quantity.

  • Albedometers

    LP PYRA 06 DeltaOHM - Delta OHM S.r.L.

    LP PYRA 05 is constructed starting from two 1st class* pyranometers and theLP PYRA 06 starting from two 2nd class* pyranometers (* according to ISO 9060standards and to specifications published by the World Meteorological Organization).An albedometer basically consists of two pyranometers, mounted back-toback,one looking upward (sky) and one downward (earth). The upward pyrametermeasures the incident global radiation (direct radiation + diffuse radiation)striking the ground, while the downward one, measures the global radiationreflected from the ground. The outputs of the two pyranometers electric signals(the two pyranometers which made up of the LP PYRA 05 are couppled in orderto have the same sensitivity) can be directly sent to a data logger or to an automaticdata processor. Albedo is the fraction of solar radiation that is reflectedfrom the ground, with respect to incident radiation:ALBEDO =Reflected Global RadiationIncident Global RadiationBy using albedometers, we can calculate the net radiation obtainedthrough the difference between incident global radiation and reflectedglobal radiation.Delta Ohm albedometers operate within 0.3 μm ÷3 μm spectral range. No powersupply is needed, as the two pyranometers generate a voltage which is usuallyequal to:10mVkW • m-2Every pyranometer composing the albedometer is calibrated separately as perthe WRR (World Radiometric Reference) standard and is supplied with the relevantReport of Calibration.These are strong and reliable ground-based instruments, especially designedto be used under all weather conditions. They are suitable for installation of thefield.Recommended use: climatological research, weather stations, road weatherstations, agriculture stations, etc…

  • 2 axes ultrasonic Anemometers HD 52.3D - multi sensor probe DeltaOHM

    HD 52.3D - Delta OHM S.r.L.

    The instruments of the series HD52.3D… are 2 axes ultrasonic static anemometersfor measuring: ! Wind speed and direction, U-V Cartesian components of wind speed, ! Relative Humidity and Temperature (option, code "17"), ! Diffuse Solar Radiation (option, code "P"), ! Barometric pressure (option, code "4").All models are equipped with compass.RS232, RS485 and SDI-12 serial interfaces are available with NMEA, MODBUS-RTUand SDI-12 communication protocols.All versions have two analogical outputs, both for wind speed and for direction, fac-tory configurable among 4÷20mA (standard), 0÷1V, 0÷5V, 0÷10V (to be specifiedwhen ordering).The heater option prevents the accumulation of snow and ice from forming, allowingaccurate measurements in all environmental conditions.Optionally available, ILAC-MRA (ACCREDIA) traceable factory calibration.Advantages: ! The absence of moving parts minimizes maintenance; ! High sensitivity for detecting very low speeds, which are not detectable by tradi-tional methods; ! The low power of the instrument allows installation in remote sites, with powerfrom 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 40mm diameter pole, optional installation kitHD2004.20), alignment facilitated by built-in compass; ! The available measurement options join together in one single, compact and light-weight instrument, the main variables of interest in weather stations; ! MODBUS RTU output allows instrument networking.Typical applications: ! Weather stations ! Environmental monitoring ! Agriculture ! Sports ! Marine and Harbour applications ! Airports ! HVAC ! Construction/Crane safety ! Renewable energy ! Building automation


    HD 2103.1 - HD 2103.2 - Delta OHM S.r.L.

    The HD2103.1 and HD2103.2 are portable instruments with a large LCD display. They are designed for use in the fields of air conditioning, heating, ventilation and environmental comfort. They use hot-wire or vane probes to measure air speed, flow rate, and temperature inside pipelines and vents. Temperature only is measured by immersion, penetration or air contact probes. The temperature sensor used can be chosen from the Pt100, Pt1000 or Ni1000. The probes are fitted with the SICRAM module, with the factory calibration settings already being memorized inside.


    HD 2303.0 - Delta OHM S.r.L.

    The HD2303.0 is a portable instrument with a large LCD display. It is designed for use in the fields of air conditioning, heating, ventilation, and environment comfort. It user hot wire or vane probes to measure air speed, flow rate, and temperature inside pipelines and vents. Temperature is only measured by immersion, penetration or air contact probes.


    HD 2114P.0 - HD 2114P.2 - Delta OHM S.r.L.

    The HD2114P.0 and HD2114P.2, HD2134P.0 and HD2134P.2 are portable micromanometers using Pitot or Darcy tubes and a large LCD display. They are used to perform measurements in the fields of air conditioning, heating and ventilation. They measure the differential pressure detected by a Pitot or Darcy tube connected to the instrument inputs acquiring the wind speed and flow rate inside pipelines and vents. They also measure the temperature using a type K thermocouple sensor.

  • Sound Level Meters

    HD 9101 - HD 9102 - Delta OHM S.r.L.

    The HD 9101/02 sound level generator is a battery operated portable sound source, suitable for the calibration of sound level meters (portable and laboratory ones) and acoustic measuring stations. It allows a direct calibration of microphones with diameter equal to 1” and, with a specific adaptor (model 9101040) also 1/2” microphones, with mechanical dimensions suit to the specifications of the IEC 61094-1 (“Measuring microphones. Part 1: Specifications for laboratory standard microphones”) and IEC 61094-4 (“Measuring microphones. Part 4: Specifications for working standard microphones”) standards.

  • Sound Level Meters

    HD 8701 - Delta OHM S.r.L.

    The sound level meter HD 8701 is a portable instrument, easy and quick to use, suitable for measuring industrial and civil noise levels. The noise levels can be read easily in dB (A) on the large liquid crystal display which also shows all the information concerning the mode of operation of the instrument. One second after switching on and with a resolution of 0.1 dB, the digital reading gives the continuously updated value of the RMS sound pressure level, with a type A frequency weighting. The single range from 30 to 130 dB further simplifies the use of the instrument, as the user does not have to change scale.

  • Sound Level Meters

    HD 2010 UC - Delta OHM S.r.L.

    The HD2010UC is an integrating portable sound level meter performing statistical analyses. The instrument has been designed combining price competitiveness and simplicity of use. Attention has been paid to the possibility of updating the instrument, and the HD2010UC can be integrated, at any time, with other options like "Advanced Data Logger" to extend its application scope. The firmware can be upgraded directly by the user using the NoiseStudio program supplied with the instrument. The HD2010UC conforms to IEC 61672-1 of 2002, IEC 60651 and IEC 60804 specifications with class 2 or class 1 tolerances. The acoustic calibrator complies with IEC 60942 class 2 or class 1 specifications.

  • Sound Level Meters

    HD 2010 - Delta OHM S.r.L.

    The HD2010 is an integrating portable precision sound level meter performing either spectral or statistical analysis. The instrument has been designed combining maximum usage flexibility, and simplicity of use. The instrument has been designed in order to offer high-performance analysis of acoustic phenomena, with particular regard to Italian legislation on environmental noise. Attention has been paid to the possibility of adjusting the instrument to regulatory modifications, and to the necessity of meeting its users' needs of today and tomorrow. The HD2010 can be integrated with other options to extend its application scope at any time; the firmware can be updated directly by the user by means of the NoiseStudio program.

  • Multifunction Portable Datalogger

    DO 9847 DeltaOHM - Delta OHM S.r.L.

    Is a multifunctional handheld board instrument and datalogger.It is provided with a 128x64 pixel (56x38 mm) graphic display and three independent inputs. Each input can be connected to one channel or two channel dual probes (ex. two thermocouples, relative humidity/temperature, etc.).The instrument automatically recognises SICRAM probes connected to the input (memory equipped and configurable intelligent probe).Functions: watch, hold, max., min., average, record, immediate or deferred start record logging, difference between the two inputs, relative measures, three input channel measurement and inside reference temperature display.Sampling time: one per second/input.Probe calibration through SICRAM module; calibration data permanent storage inside the probe.Storage capacity: 32.000 readings per input.Storage interval and printing can be configured between one second and 1 hour.RS232C serial output: from 300 up to 115.200 baud rate.Immediate or deferred print-out.Stored data can be displayed and stored data blocks can be deleted.Automatic shutout after 8 minutes can be disabled.Units of measurement can be selected according to the physical quantity of the connected probe.Firmware update through RS232C serial port. Different types of SICRAM modules or probes can be connected to the input: Platinum sensor temperature, thermocouple,relative humidity/temperature, Discomfort index, continuous voltage (20V), current (024mA), pressure, air speed and light.Technical data of the instrument do9847- Power supply: Battery: 4 1.5V AA alkaline batteries; operating time with high quality batteries: about 60 hours.Mains: through 9Vdc, 250mA external power supply, 2 pole connector.- Operating conditions: Working temperature: -10...+50C. Storage temperature: -25...+65C.Relative Humidity: 0...90%R.H., not condensating.- LCD display: 128x64 pixel (56x38 mm) graphic LCD.- Keyboard: 18 multifuction Keys and 3 function keys.- Recorded data safety: independently from batteries charging conditions.- Measured values storage: on 16 files divided into 16-sample pages.- Quantity: 32.000 samples per input channel.- Storage interval: 1 s...1 h. Time and date, real time. Accuracy: 1 minute/month maximum error margin.- Serial interface: RS232C type galvanically insulated SUB D 9 male connector. Baud rate: 300...115.200 baud. Data bit: 8.Parity: none. Stop bit: 1. Flow control: Xon/Xoff. RS232C cable max.length: 15 m.- immediate printing interval: 1 s...1 h.- Firmware can be updated through PC using the instrument serial port.- Probes connections: n 3 DIN45326 8 pole connectors- Dimensions and weight: 245x100x50 mm - 300 gr.- Case: ABS - Protection: rubber.

  • Net Irradiance Meter

    LP NET 07 - Delta OHM S.r.L.

    LP NET net radiometer is designed to measure the Net radiation passing through a surface, across the spectral range between the near ultraviolet and the far infrared. The Net radiation is defined as the difference between the radiation that strikes the top surface, and the radiation that strikes the bottom surface of the net radiometer. The upward facing surface measures direct and diffuse solar radiation plus longwave irradiance from the sky (clouds), while the downward facing surface measures the reflected solar radiation (Albedo) plus the terrestrial long-wave irradiance. LP NET is designed for continuous outdoor use, and is suitable for all weather conditions.

  • Minidatalogger

    HD207/227/206/226 - Delta OHM S.r.L.

    HD206…/HD226… and HD207…/HD227… series dataloggers are low-cost, rugged instruments for a long-term reliable monitoring of temperature and temperature/relative humidity measurements. They are available in different versions: with or without LCD display, with sensors either inside or outside the instrument housing, or with cable connection. The analysis of logged data is made using Delta Log2 software for Windows. The datalogger functions of Start, Stop, Configuration, Data Download and Setting of logging interval are selectable either from keyboard or from a computer. Through a computer, you can define a password to enable the access to configuration data. Typical applications are: monitoring of temperature/humidity during transportation, storage of fresh or frozen foods, fruit, vegetable products and flowers, pharmaceuticals, sensitive and photographic products, paper, explosives, as well as laboratory activities in general.

  • Pyranometers

    LP PYRA 12 - Delta OHM S.r.L.

    The LP PYRA 12 pyranometer measures the irradiance on a plane surface (Watt/m2). Thanks to the shadow-ring, the LP PYRA 12 measure the diffuse solar radiation eliminating the contribution of direct irradiance, The LP PYRA 12 is equipped with a First Class pyranometer ( LP PYRA 02)in accordance with ISO 9060 standard and with the criteria of the WMO "Guide to Meteorological Instruments and Methods of Observation'", fifth edition (1983).

  • Pyranometers

    LP PYRA 03 - Delta OHM S.r.L.

    Pyranometers LP PYRA 02 and 03 are well suited for the measurement of incoming global solar radiation.