Senseca

LPR10 Class A Pyranometer

Fast Response Spectrally Flat Class A pyranometer for global solar irradiance measurement.

Measuring range −200…4000 W/m² and 95% response time < 0.3 s
Thermopile sensor with 285…2850 nm spectral range (50%)
Isolated RS485 Modbus-RTU output
Integrated heater, tilt sensor and internal temperature, humidity and pressure diagnostics
7…30 Vdc power supply, IP67 protection

Quantity

Overview

The Senseca LPR10M0T is a Fast Response Spectrally Flat Class A pyranometer according to ISO 9060:2018, designed to measure global solar irradiance on a flat surface, including direct and diffuse solar radiation. It uses a thermopile sensor with a measuring range of −200…4000 W/m², a spectral range of 285…2850 nm (50%) and a 95% response time of less than 0.3 seconds.

The pyranometer features an integrated heater with automatic, always-on and always-off operating modes to prevent dew and frost formation. Internal temperature, relative humidity and pressure sensors provide diagnostic monitoring of operating conditions, while an integrated tilt sensor enables continuous installation stability monitoring. Adjustable feet and a bubble level facilitate accurate horizontal positioning.

It provides an isolated RS485 Modbus-RTU output for system integration, with DATA sense software supporting configuration, real-time measurement monitoring and data logging. The instrument operates on a 7…30 Vdc power supply, features IP67 protection and is supplied with an ISO 17025-accredited calibration certificate.

Typical Applications

Photovoltaic (PV) system performance monitoring
Meteorological solar radiation measurement
Environmental monitoring and studies
Solar radiation research and analysis

Key Features

Fast Response Spectrally Flat Class A according to ISO 9060:2018
Thermopile sensor for global solar irradiance measurement
Measuring range −200…4000 W/m²
Spectral range (50% response): 285…2850 nm
Response time (95%): < 0.3 s
Resolution 0.1 W/m²
Isolated RS485 Modbus-RTU output
Integrated heater with automatic, always-on and always-off operating modes
Internal temperature, relative humidity and pressure diagnostic sensors
Integrated tilt sensor with 0°…180° measuring range
Adjustable feet and bubble level with < 0.2° accuracy
DATAsense software for configuration, real-time monitoring and data logging
7…30 Vdc power supply
IP67 protection and −40…+80 °C operating temperature
Factory calibration according to ISO 9847:2023, with ISO 17025-accredited calibration certificate

Benefits

Fast-response, Class A solar irradiance measurement for reliable monitoring
Integrated heater helps prevent dew and frost to maintain measurement reliability
Built-in diagnostics support early identification of potential maintenance needs
Continuous tilt monitoring helps detect unwanted changes in installation position
Easy installation with adjustable feet and integrated bubble level
Isolated RS485 Modbus-RTU output enables integration with existing monitoring systems
DATAsense software simplifies configuration, real-time monitoring and data logging
ISO 17025-accredited calibration certificate provides documented calibration traceability
IP67 protection supports reliable operation in outdoor environments

Specifications

Solar Radiation Measurement
Measured quantity	Global solar irradiance (direct and diffuse solar radiation)
Sensor	Thermopile
Classification	Fast Response Spectrally Flat Class A
Classification standard	ISO 9060:2018
Measuring range	−200…4000 W/m²
Resolution	0.1 W/m²
Spectral range (50%)	285…2850 nm
Viewing angle	2π sr
Response time (95%)	< 0.3 s

Performance Specifications (ISO 9060:2018)
Zero offset (a): response to 200 W/m² thermal radiation	Absolute value < 1 W/m²
Zero offset (b): response to 5 K/h ambient temperature change	Absolute value < 1 W/m²
Zero offset (c): total zero offset including (a), (b) and other sources	Absolute value < 4 W/m²
Long-term instability (1 year)	Absolute value < 0.5%
Non-linearity	Absolute value < 0.2%
Directional response (up to 80° with 1000 W/m² beam)	Absolute value < 10 W/m²
Spectral error	Absolute value < 0.2%
Temperature response (−10…+40 °C)	Absolute value < 0.5%
Tilt response	Absolute value < 0.4%

Internal Temperature Diagnostic Sensor
Measuring range	−40…+80 °C
Resolution	0.1 °C
Accuracy	±0.5 °C (0…60 °C)

Internal Relative Humidity Diagnostic Sensor
Measuring range	0…100% RH
Resolution	0.1% RH
Accuracy	±3% RH at 25 °C and 20…80% RH

Internal Pressure Diagnostic Sensor
Measuring range	500…1100 hPa
Resolution	0.1 hPa
Accuracy	±1 hPa (0…60 °C)

Tilt Sensor
Measuring range	0°…180°
Resolution	0.1°
Accuracy	< 0.5°

Electrical and Communication
Output	Galvanically isolated RS485 Modbus-RTU
Power supply	7…30 Vdc
Power consumption (heater ON)	2 W
Power consumption (heater OFF)	0.3 W
Electrical connection	5-pole M12 connector
Modbus address range	1…247
Default Modbus address	1
Supported baud rates	9600, 19200, 38400, 57600, 115200 bps
Default baud rate	19200 bps
Default serial communication format	8E1

Integrated Heater
Heater	Integrated
Operating modes	Always ON, Always OFF, AUTO
AUTO mode activation threshold	+10 °C
AUTO mode deactivation threshold	+40 °C
Factory default operating mode	Always OFF

Mechanical and Environmental
Housing material	Anodized aluminium
Protection screen material	ASA
Dome material	Optical glass
Weight	Approximately 650 g
Operating temperature	−40…+80 °C
Operating relative humidity	0…100% RH
Maximum operating altitude	6000 m
Protection degree	IP67
Bubble level accuracy	< 0.2°
Mean time between failures (MTBF)	> 10 years

Physical Dimensions
Overall protection screen diameter	Ø160 mm
Main body diameter	Ø79.5 mm
Height from top of dome to underside of main body	99 mm
Mounting feet extension below main body	20 mm

Installation and Mounting
Fixing holes	4 × M5
Horizontal positioning	Adjustable feet and integrated bubble level
Installation monitoring	Integrated tilt sensor

Calibration
Factory calibration standard	ISO 9847:2023 (Type A1)
Calibration method	Comparison with a reference pyranometer
Reference calibration	Reference sample calibrated annually at WRC (World Radiation Center)
Calibration certificate	ISO 17025-accredited calibration certificate
Additional calibration measurements	Temperature response and directional response

Configuration and Software
Configuration software	DATAsense PC application
Software functions	Configuration, real-time measurement monitoring, graphical irradiance display and data logging
Alternative configuration method	ASCII proprietary protocol
Modbus configuration	Holding Registers for selected parameters
Configurable serial parameters	Modbus address, baud rate, parity and stop bits
Configurable alarm thresholds	Operating time, internal temperature, relative humidity and pressure
Configurable temperature units (Modbus)	°C, °F, K
Temperature unit (ASCII proprietary protocol)	°C

Supplied Items and Optional Accessories
Solar radiation protection screen	Supplied
M12 female free connector	Supplied if optional cable is not ordered
Calibration certificate	ISO 17025-accredited calibration certificate, supplied
DATAsense PC application	Downloadable from manufacturer's website
LPS1 mounting bracket	Optional; for Ø30…50 mm mast, horizontal or vertical installation
LPS5 adjustable holder	Optional; for inclined installation on Ø30…50 mm mast
Installation cables	Ordered separately

Drawing

Downloads

LPR10 Datasheet	DownloadLPR10 Datasheet
LPR10 User Manual	DownloadLPR10 User Manual
LPR10 CE Declaration of Conformity	DownloadLPR10 CE Declaration of Conformity