Senseca LPPYRHE16 Series Class B Pyrheliometers for Direct Solar Irradiance Measurement
Senseca LPPYRHE16 Series Class B Pyrheliometers for Direct Solar Irradiance Measurement
Senseca LPPYRHE16 Series
The Senseca LPPYRHE16 Series consists of Class B pyrheliometers according to ISO 9060:2018, designed for the direct measurement of solar irradiance in W/m².
For correct measurement, the receiving surface of the pyrheliometer must be positioned perpendicular to the sun’s rays, typically by means of a solar tracker or another suitable pointing system. A dedicated diaphragm system ensures that only direct solar radiation reaches the sensor surface, allowing measurement of the direct normal component of solar irradiance.
In accordance with WMO and ISO 9060:2018 requirements, the pyrheliometer has a 5° field of view.
The series is available in several versions depending on the output type:
- LPPYRHE16 – passive version;
- LPPYRHE16AC – active version with 4–20 mA current output;
- LPPYRHE16ACS – version with 4–20 mA current output via an integrated amplifier-transmitter and RS485 serial output with MODBUS-RTU protocol;
- LPPYRHE16AV – active version with 0–1 V, 0–5 V, or 0–10 V voltage output;
- LPPYRHE16S – active version with RS485 serial output and MODBUS-RTU protocol.
The pyrheliometer is supplied factory calibrated and includes a Calibration Report. The standard package also includes a protective hood, cartridge for silica-gel crystals, 3 refills, and a 4-pole M12 flying connector.
The Senseca LPPYRHE16 Series is suitable for weather stations, direct solar irradiance measurement, solar research, photovoltaic system monitoring, and professional radiometric applications.
For more information:
LPPYRHE16... Series - Class B Pyrheliometers - Light, Solar & Photoradiometry, Weather Station - Senseca
Technical Specifications – Senseca LPPYRHE16 Series
Technical Specifications According to ISO 9060:2018
| Parameter | Value |
|---|---|
| Classification | Spectrally Flat Class B |
| Response Time (95%) | <9 s |
| Zero Offset in Response to a 5 K/h Change in Ambient Temperature | <±3 W/m² |
| Long-Term Instability (1 Year) | <±1% |
| Non-Linearity | <±0.5% |
| Spectral Error | <±0.8% |
| Temperature Response | <±2% |
| Tilt Response | <±0.5% |
General Technical Specifications
| Parameter | Value |
|---|---|
| Sensor | Thermopile |
| Typical Sensitivity | 5 µV/(W/m²) |
| Measuring Range | 0–2000 W/m² |
| Viewing Angle | 5° (slope 1°) |
| Spectral Range (50%) | 200–4000 nm |
| Operating Temperature | -40 to +80 °C |
| Operating Relative Humidity | 0–100 %RH |
| Weight | Approx. 1.5 kg |
| Material | Aluminium |
Outputs by Model
| Model | Output |
|---|---|
| LPPYRHE16 | Passive, mV output |
| LPPYRHE16AC | 2-wire 4–20 mA current loop |
| LPPYRHE16ACS | RS485 Modbus-RTU + analog 4–20 mA |
| LPPYRHE16AV | 0–10 V |
| LPPYRHE16AV1 | 0–1 V |
| LPPYRHE16AV5 | 0–5 V |
| LPPYRHE16S | RS485 Modbus-RTU |
Power Supply
| Version | Power Supply |
|---|---|
| RS485 Output | 5–30 V DC |
| Analog Output, Except 0–10 V | 10–30 V DC |
| 0–10 V Output | 15–30 V DC |
Connection
| Parameter | Value |
|---|---|
| Connector | 4- or 8-pole M12, depending on model |
Dimensions
According to the drawing:
-
overall length: 324 mm
-
main cylindrical section: 205 mm
-
front section: 50 mm
-
rear section: 60 mm
-
body diameter: Ø38 mm
-
front section width: 84 mm
-
front section height: 95 mm
Installation and Alignment
For correct alignment of the pyrheliometer, the two holes in the front and rear flanges are used. The instrument must be oriented so that the sun’s rays pass through the first hole in the front flange and reach the second hole in the rear flange.
Ordering Codes
| Code | Description |
|---|---|
| LPPYRHE16 | Passive, mV output |
| AC | 2-wire 4–20 mA current output |
| ACS | RS485 MODBUS-RTU + analog 4–20 mA |
| AV | 0–10 V output |
| AV1 | 0–1 V output |
| AV5 | 0–5 V output |
| S | RS485 MODBUS-RTU serial output |