サカキコーポレーション Product Lineup

The HD2021T series converts light and radiation amounts in the UVB and UVC spectral regions and the wavelength range of 400 to 1050 nm into signals of 0-10V or 4-20mA, represented as illuminance (lux), luminance, equivalent light curtain luminance (cd/m²), or irradiance (W/m²). These analog outputs are calibrated to the specified full-scale values before shipment. ▼ Analog output DC 4-20mA or DC 0-10V ▼ Three types of output scaling available ▼ Suitable for outdoor use (IP66 model) ▼ Equivalent light curtain luminance measurement (HD2021T7)

Measurement of illuminance (lux) in the near ultraviolet spectrum region VIS-NIR and the photon flux in the UVA, UVB, and PAR regions (400–700nm). ■LPPHOT03 Measurement of illuminance (lux), defined as the ratio of luminous flux (lumens) to unit area (m²). The spectral response curve of the photometric measurement probe approximates the response curve of the human eye known as the photopic standard sensitivity. ■LPPAR03 Measurement of the ratio of the number of photons incident on a surface per second to unit area (m²) in the spectral range of 400–700nm. This quantity is defined as PAR: Photosynthetically Active Radiation. ■LPUVA03 Measurement of radiative illuminance (W/m²), defined as the ratio of the radiative flux (W) incident on a surface to unit area (m²) in the UVA spectral range (315–400nm). With the adoption of a new photodiode, LPUVA03 is insensitive to visible and infrared light.

●LPPHOT01/01S: Illuminance Measures illuminance (lux), defined as the ratio of luminous flux (lumens) incident on a surface to unit area (m²). ●LPRAD01: Radiant Irradiance Measures radiant irradiance (W/m²), defined as the ratio of radiant flux (W) incident on a surface in the VIS-NIR spectral range (400–1050 nm) to unit area (m²). ●LPPAR01: Photosynthetically Active Radiation Measures the number of photons incident on a surface per second in the spectral range of 400–700 nm, relative to unit area (m²). ●LPUVA01: UVA Measures radiant irradiance (W/m²), defined as the ratio of radiant flux (W) incident on a surface in the UVA spectral range (315–400 nm) to unit area (m²). ●LPUVB01: UVB Measures radiant irradiance (W/m²), defined as the ratio of radiant flux (W) incident on a surface in the UVB spectral range (280–315 nm) to unit area (m²). ●LPUVC01: UVC Measures radiant irradiance (W/m²), defined as the ratio of radiant flux (W) incident on a surface in the UVC spectral range (220–280 nm) to unit area (m²).

The HD2402 is a portable light/radiometer/data logger designed to measure non-coherent optical radiation in compliance with EC Directive 2006/25/EC and Ordinance No. 81 (April 9, 2008). The HD2402 consists of multiple sensors for measuring different spectra and a laser light to specify the light source being measured and analyzed. ▼ Measures six types of light and radiation with multi-sensors ▼ Compliant with EC Directive 2006/25/EC and Ordinance No. 81 ▼ Logs 96,000 data points at a fixed interval of 1 second (approximately 26 hours) ▼ Data download and analysis via dedicated software

A high-precision all-day solar radiation meter based on the measurement principle of thermopile sensors. This measurement principle allows for the acquisition of μV measurement signals without external power supply. When using DC 0/4–20 mA, DC 0–1/5/10 V, or RS485 Modbus-RTU output, external power supply is required. These outputs are always related to W/m², allowing for the correlation with solar radiation on the surface of solar panels. The RS485 Modbus-RTU output model is equipped with internal diagnostic sensors. It monitors the operational status of the solar radiation meter, enabling the prediction of maintenance needs in advance, thus ensuring reliable measurements at all times. This model allows for changes in settings such as analog output, real-time monitoring of measurement values, and file saving through the PC application software DATAsense. All SenSeka (formerly Delta Ohm) solar radiation meters are designed so that the electrical systems are completely insulated from the housing, allowing installation on any surface, including metal, without additional insulation treatment for the solar radiation meter.

A high-precision all-day solar radiation meter based on the measurement principle of thermopile sensors. This measurement principle allows for the acquisition of μV measurement signals without external power supply. When using DC 0/4–20 mA, DC 0–1/5/10 V, or RS485 Modbus-RTU output, external power supply is required. These outputs are always related to W/m², allowing for the correlation with solar radiation on the surface of solar panels. The RS485 Modbus-RTU output model is equipped with internal diagnostic sensors. It monitors the operational status of the solar radiation meter, enabling the prediction of maintenance needs in advance, thus ensuring reliable measurements at all times. This model allows for changes in settings such as analog output, real-time monitoring of measurement values, and file saving through the PC application software DATAsense. All SenSeka (formerly Delta Ohm) solar radiation meters are designed so that the electrical systems are completely insulated from the housing, allowing them to be mounted on any surface, including metal, without additional insulation treatment for the solar radiation meter.

The all-weather pyranometer probe "LP471PYRA□ series" is supplied with a 5m or 10m cable and is equipped with a SICRAM module, using sensors that comply with ISO9060:2018 Class C, Class B, Class A, or silicon photodiodes. To ensure high measurement consistency, the same pyranometer used in solar power generation systems is utilized as the probe, allowing for reliable measurement and data acquisition. Please feel free to contact us for inquiries. 【Features】 ■ Outstanding measurement consistency - uses the same pyranometer as the one in the PV system site ■ Long-term data recording of solar radiation is possible (HD2102.2, HD31) ■ Direct reading of current solar radiation values on a large LCD display ■ Comes with an ISO9001 calibration certificate for the pyranometer *For more details, please download the PDF or feel free to contact us.

Two pyranometers equipped with thermopile sensors mounted back-to-back allow for measurements from two directions. The pyranometer directed upwards (towards the sky) measures the incident global solar radiation, while the other one is directed downwards (towards the ground) and measures the global solar radiation reflected from the ground. Three versions are available, fully compliant with ISO 9060:2018 standards and WMO (World Meteorological Organization) guidelines "Guide to Meteorological Instruments and Methods of Observation": Spectrally Flat Class A LPS110P0, Spectrally Flat Class B LPS050P0, Spectrally Flat Class C LPS060P0. All are passive types and do not require a power supply. The electrical signal output from the two pyranometers can be sent directly to data loggers or automatic data processors. They can be used outdoors in low-temperature environments, and the built-in bubble level allows for precise leveling during installation. ▲ High-quality measurement specifications due to lightweight body design ▲ Accuracy and reliability backed by ISO 17025 accredited lab (equivalent to JCSS) ▲ High immunity to interference in installation environments, no power supply required

■Improves the measurement accuracy of solar radiation by maintaining a constant operating temperature for the sensor. ■Reduces type "A" zero offset (associated with pyranometers and nighttime radiometers) caused by the cooling of the glass dome relative to the sensor body through forced ventilation of this unit. ■Prevents condensation and frost formation on the glass dome of the pyranometer by using ventilation and heating functions. ■Equipped with two independent heater circuits of the same power to prevent snow accumulation and ice formation on the glass dome. ■Compatible with the Senseca (formerly Delta Ohm) pyranometer LPS02 and LPS10 series. ▲Forced ventilation + heating unit for pyranometers and nighttime radiometers. ▲Helps maintain and improve accuracy under harsh weather conditions. ▲Operating temperature -40 to +70℃, 0 to 100% RH. ▲Supply voltage DC12V, ventilation fan power consumption 1.6W, each heater circuit 6W.

Using a silicon photodiode sensor with a measurement wavelength of 400 to 1100 nm, the total solar radiation (W/m²) is measured. A special surface shape design and diffuser achieve a 180° field of view in accordance with the cosine law. It can be used for measuring solar radiation in the field of renewable energy, such as solar thermal power and photovoltaic power generation. ■ Comes with a 5m lead cable as standard (with stripped ends), and the typical output is 20μV/(W/m²). ■ Custom cable lengths can be manufactured upon request at the time of order. ■ Additionally, by using a base with a level, the solarimeter can be installed horizontally. ▼ All-weather solarimeter with a silicon photodiode as the sensor ▼ Measurement wavelength of 400 to 1100 nm, measurement range of 0 to 1400 W/m² ▼ Typical sensitivity of 20μV/(W/m²), response time <1μs ▼ 180° field of view due to the upper surface shape and diffuser

A measuring instrument that is installed perpendicular to sunlight using a solar tracking device and measures direct solar radiation (W/m²). The LPPYRHE16 has a field of view of 5° and an inclination angle of 1°, in accordance with ISO 9060:2018 and WMO standards. Its operating principle is based on a passive type thermopile sensor. The sensing surface of the thermopile is coated with matte black paint to ensure that the direct solar radiation sensor is not selective to different wavelengths. The spectral range of the direct solar radiation sensor is determined by a quartz window that protects the sensor from dust and moisture. Thanks to the special quartz, non-selective measurements across a spectral range of 200nm to 4000nm are possible. The sensor used achieves a response time faster than what is required for class B direct solar radiation sensors by ISO 9060:2018. (The required response time is 15 seconds according to ISO 9060:2018, while the LPPYRHE16 is under 9 seconds.) ▼ ISO 9060:2018, WMO compliant class B direct solar radiation sensor ▼ Complete overview of solar radiation elements through combined use with an all-sky solar radiation sensor ▼ Long-term high-precision measurements achieved with automatic temperature compensation feature ▼ Calibration certificate included as standard

Mainly used in the field of meteorological measurements for measuring longwave radiation (far infrared region). The measurements target wavelengths exceeding 4.5 μm. Longwave radiation can be obtained from the output signal of the thermopile and the temperature of the longwave radiometer, with the temperature measured by a built-in 10kΩ NTC in the longwave radiometer. By adding another longwave radiometer to measure upward infrared radiation and an albedometer to measure shortwave radiation (<3 μm), it can also be used for energy balance investigations. Two versions of the longwave radiometer are available: ● LPPIRG01: μV/(W/m²) output ● LPPIRG01S: RS485 Modbus-RTU output *Provided with a calibration report obtained from outdoor comparative measurements (for at least one clear night) with a reference instrument calibrated at WRC (World Radiation Center). ▼ ISO9060:2018 compliant longwave (infrared) meter ▼ Measurement range -300 to +300 W/m² ▼ Built-in silica gel cartridge for condensation prevention (replaceable) ▼ Robust construction designed for long-term use, M12 connector connection

■Measurement of sunshine duration based on the WMO-defined threshold of 120 W/m² ■RS485, voltage analog, voltage digital, SDI-12, contact output ■Measured with a photodiode array positioned at a specific location ■High measurement reliability is ensured due to the absence of mechanical moving parts Three versions are available due to differences in output type: ●LPSD18.1: RS485 Modbus-RTU output and voltage-free contact output (closed = SRD ≥ 120 W/m², open = SRD < 120 W/m²) ●LPSD18.2: RS485 Modbus-RTU output, analog voltage output DC 0–1V (corresponding to direct radiation 0–2000 W/m²) and digital voltage output (output 1V = SRD ≥ 120 W/m², output 0V = SRD < 120 W/m²) ●LPSD18.3: SDI-12 output and voltage-free contact output (closed = SRD ≥ 120 W/m², open = SRD < 120 W/m²)

The radiation balance meter LPNET07 measures the radiation balance received on its sensing surface from near ultraviolet to far infrared. The radiation balance is defined as the difference between the radiation incident on the upper surface of the radiation balance meter and that incident on the lower surface. The upward-facing surface measures direct solar radiation, diffuse solar radiation, and long-wave radiation emitted from the sky (clouds), while the downward-facing surface measures solar radiation reflected from the ground (albedo) in addition to long-wave radiation emitted from the Earth. The LPNET07 is designed with a robust structure to be used outdoors under any weather conditions and has high reliability for long-term measurements. In addition to its use for energy balance measurements in meteorology, the LPNET07 can also be used for measuring indoor radiation temperature (ISO7726). ▼ High-precision measurement of radiation balance in the spectral range from near infrared to far infrared ▼ High sensitivity output of 10μV/(W/m²) (typical value) ▼ Robust housing design that withstands harsh environmental conditions ▼ Usable for measuring indoor radiation temperature as well as outdoor (ISO7726) ▼ Signal amplifier converter (optional) to convert microvolt output to standard signal is also available.

A four-component radiation balance meter that measures net radiation (radiation balance) in the wavelength range of 0.3μm to 45.0μm. It consists of a pair of all-sky solar radiation sensors (one for downward solar radiation ESW↓ and the other for upward surface-reflected solar radiation ESW↑) and a pair of long-wave (nighttime) radiation sensors (one for infrared radiation from the sky EFIR↓ and the other for infrared radiation from the surface EFIR↑). The LPNET14 is equipped with a built-in temperature sensor (NTC). The infrared (long-wave) radiation is calculated from the output of a thermopile and the temperature of the radiation balance meter body obtained from this built-in temperature sensor. It is designed and manufactured to withstand long-term outdoor use even in harsh weather conditions. ▼ Each pair of solar radiation sensors and long-wave radiation sensors measures radiation balance with four components ▼ Measurement wavelength range: 0.3μm to 45.0μm ▼ Built-in silica gel cartridge for condensation prevention (replaceable) ▼ Robust construction designed for long-term use, M12 connector connection

The LPPHOT02 series illuminance meter measures illuminance (lux), defined as the ratio of luminous flux (lumens) incident on a surface to unit area (m²). The spectral response curve of the photometric measurement probe approximates the human eye's response curve, known as the standard photopic curve V(λ). The difference between the LPPHOT02 series and the standard photopic curve V(λ) in spectral response is calculated as error f’₁. The LPPHOT02 series illuminance meter has a robust structure, designed for long-term outdoor use, and is primarily used for meteorological measurements in daylight.

The UVI radiometer "LPUVI02" measures the effective total radiation incident on a plane based on the WMO's UV index measurement requirements. The total global radiation is the sum of direct radiation and scattered radiation. Unlike the visible light spectrum, where the direct component exceeds the scattered component, in the ultraviolet spectrum, light is strongly diffused in the atmosphere, making both components equal. Therefore, it is important to accurately measure both of these components. 【Features】 ■ UVI radiometer, level gauge, shading disk, and calibration certificate included as standard ■ Fully compliant with WMO requirements for UV index measurement ■ High flexibility with selectable output and two types of measurement ranges ■ Mechanical design that withstands use in various environments and low maintenance ■ Can be used for standalone measurements or as a component of a comprehensive solar radiation measurement system *For more details, please download the PDF or feel free to contact us.

■The UVA radiometer LPUVA02 series measures the broadband UVA irradiance (W/m²) incident on a surface. ■The measured irradiance is the sum of direct solar radiation and scattered radiation. ■The LPUVA02 can also measure UVA irradiance indoors in closed environments. ▲High sensitivity μV, DC 4-20mA, 0-1V output, level gauge, with shielding plate.