Senseca

LPS05 Class B Albedometer for Solar Reflectance and Net Radiation Measurement

Spectrally Flat Class B albedometer with dual thermopile pyranometers for solar radiation monitoring.

Measures incident and reflected radiation to determine albedo and net solar radiation
Measuring range −200…4000 W/m² and spectral range 283…2800 nm (50%)
Passive mV output with two 5-pole M12 connectors
IP67 protection, integrated bubble level and factory calibration to ISO 9847:2023

Quantity

Overview

The Senseca LPS050P0 is an albedometer consisting of two Spectrally Flat Class B thermopile pyranometers, classified according to ISO 9060:2018. One measures global solar radiation, while the other measures radiation reflected from the surface, allowing the determination of albedo and net solar radiation. Each pyranometer has a measuring range of −200…4000 W/m² and a spectral range of 283…2800 nm (50%).

The instrument provides passive mV outputs through two 5-pole M12 connectors for connection to a data logger without an external power supply. Designed for outdoor monitoring, it features IP67 protection, anodized aluminium housing, an ASA protection screen, optical glass domes and an integrated bubble level for horizontal alignment. The sensors are factory calibrated according to ISO 9847:2023, and the instrument is supplied with a calibration report.

Typical Applications

Surface albedo measurement
Net solar radiation monitoring
Climatological observations
Automatic Weather Stations (AWS)
Agricultural radiation monitoring
Environmental research

Key Features

Dual thermopile pyranometers for incident and reflected solar radiation measurement
Spectrally Flat Class B classification according to ISO 9060:2018
Measuring range −200…4000 W/m²
Spectral range 283…2800 nm (50%)
Response time (95%) < 10 s
Passive mV outputs requiring no external power supply
Two 5-pole M12 connectors for independent pyranometer signals
IP67 protection with anodized aluminium housing, ASA screen and optical glass domes
Integrated bubble level with < 0.2° accuracy for horizontal alignment
Operating temperature −40…+80 °C
Factory calibrated according to ISO 9847:2023 with calibration report

Benefits

Measures incident and reflected solar radiation to determine albedo and net solar radiation
Passive operation eliminates the need for an external power supply
Independent mV outputs support connection to data logging systems
IP67 construction supports long-term outdoor monitoring
Integrated bubble level simplifies accurate horizontal installation
Factory calibrated and supplied with a calibration report for measurement traceability

Specifications

General and Measurement
Model	LPS050P0
Instrument type	Albedometer
Classification	Spectrally Flat Class B
Classification standard	ISO 9060:2018
Pyranometer configuration	Two LPS020P0 pyranometers
Sensor	Thermopile
Typical sensitivity	6…15 µV/(W/m²)
Measuring range	−200…4000 W/m²
Viewing angle	2π sr
Spectral range (50%)	283…2800 nm

Measurement Performance
Response time (95%)	<10 s
Zero offset — response to 200 W/m² thermal radiation	Absolute value <10 W/m²
Zero offset — response to 5 K/h ambient temperature change	Absolute value <4 W/m²
Total zero offset	Absolute value <15 W/m²
Long-term instability (1 year)	Absolute value <1%
Non-linearity	Absolute value <1%
Directional response (up to 80° with 1000 W/m² beam)	Absolute value <18 W/m²
Spectral error	Absolute value <0.5%
Temperature response (−10…+40 °C)	Absolute value <1.5%
Tilt response	Absolute value <1%

Electrical
Output signal	Passive mV output
Electrical connections	Two 5-pole M12 connectors
External power supply	Not required
Typical output impedance	<50 Ω
Recommended reading instrument resolution	1 µV

Environmental
Operating temperature	−40…+80 °C
Relative humidity	0…100% RH
Maximum operating altitude	6000 m
Protection degree	IP67
Mean time between failures (MTBF)	>10 years

Mechanical
Weight	Approx. 1.4 kg
Housing material	Anodized aluminium
Protection screen material	ASA
Dome material	Optical glass
Bubble level accuracy	<0.2°

Measuring Principle and Sensor Construction
Upper pyranometer	Measures incoming global solar radiation
Lower pyranometer	Measures reflected solar radiation
Albedo calculation	Reflected solar radiation ÷ global solar radiation
Net solar radiation calculation	Global solar radiation − reflected solar radiation
Sensitive surface	Black matt coated
Dome configuration	Two concentric glass domes
Outer dome diameters	50 mm and 30 mm
Temperature compensation	Internal compensation circuit minimises sensitivity changes with temperature
Moisture protection	Internal silica-gel moisture absorber

Installation and Maintenance
Recommended installation height	1…2 m above ground
Mounting arrangement	Support rod fixed to a vertical mast using a cross clamp
Dome cleaning	Water and standard lens paper
Silica-gel service life	At least 10 years
Silica-gel replacement	User-replaceable
Calibration check interval	Annual check recommended

Calibration
Calibration standard	ISO 9847:2023, Type A1
Calibration method	Comparison with a reference pyranometer
Reference calibration	Reference pyranometer calibrated annually at the World Radiation Center (WRC)
Factory calibration	Factory calibrated
Calibration documentation	Calibration report supplied
ISO 17025 calibration certificate	Available upon request

Ordering Information and Accessories
Supplied solar radiation protection screen	Included
Supplied mounting support rod	Included
Female M12 free connectors	Two included if optional connection cables are not ordered
CPM12-5.5	Optional 5 m cable with 5-pole M12 connector and open wires
CPM12-5.10	Optional 10 m cable with 5-pole M12 connector and open wires
LPSP1A	Replacement UV-resistant protection screen
LPG	Replacement silica-gel, 5 packets
Connection cables and fixing accessories	Ordered separately

Drawing

Downloads

LPS05 Datasheet	DownloadLPS05 Datasheet
LPS05-LPS11 Family User Manual	DownloadLPS05-LPS11 Family User Manual
LPS05 CE Declaration of Conformity	DownloadLPS05 CE Declaration of Conformity