Apogee SP-422 Manuel utilisateur

APOGEE INSTRUMENTS, INC. | 721 WEST 1800 NORTH, LOGAN, UTAH 84321, USA

TEL: (435) 792-4700 | FAX: (435) 787-8268 | WEB: APOGEEINSTRUMENTS.COM

OWNER’S MANUAL

USB PYRANOMETER

Models SP-422

TABLE OF CONTENTS

Owner’s Manual ................................................................................................................................................................................................................ 1

Certificate of Compliance .................................................................................................................................................................................... 3

Introduction............................................................................................................................................................................................................. 4

Sensor Models ......................................................................................................................................................................................................... 5

Specifications........................................................................................................................................................................................................... 6

Deployment and Installation.............................................................................................................................................................................. 9

Software Installation............................................................................................................................................................................................10

Operation and Measurement...........................................................................................................................................................................11

Windows Software ...............................................................................................................................................................................................13

MAC software ........................................................................................................................................................................................................18

Maintenance and Recalibration.......................................................................................................................................................................24

Troubleshooting and Customer Support......................................................................................................................................................26

Return and Warranty Policy ..............................................................................................................................................................................27

CERTIFICATE OF COMPLIANCE

EU Declaration of Conformity

This declaration of conformity is issued under the sole responsibility of the manufacturer:

Apogee Instruments, Inc.

721 W 1800 N

Logan, Utah 84321

USA

for the following product(s):

Models: SP-422

Type: Pyranometer

The object of the declaration described above is in conformity with the relevant Union harmonization legislation:

2014/30/EU Electromagnetic Compatibility (EMC) Directive

2011/65/EU Restriction of Hazardous Substances (RoHS 2) Directive

Standards referenced during compliance assessment:

EN 61326-1:2013 Electrical equipment for measurement, control and laboratory use – EMC requirements

EN 50581:2012 Technical documentation for the assessment of electrical and electronic products with respect to the

restriction of hazardous substances

Please be advised that based on the information available to us from our raw material suppliers, the products manufactured

by us do not contain, as intentional additives, any of the restricted materials including cadmium, hexavalent chromium, lead,

mercury, polybrominated biphenyls (PBB), polybrominated diphenyls (PBDE).

Further note that Apogee Instruments does not specifically run any analysis on our raw materials or end products for the

presence of these substances, but rely on the information provided to us by our material suppliers.

Signed for and on behalf of:

Apogee Instruments, May 2016

Bruce Bugbee

President

Apogee Instruments, Inc.

INTRODUCTION

Solar radiation at Earth’s surface is typically defined as total radiation across a wavelength range of 280 to 4000 nm

(shortwave radiation). Total solar radiation, direct beam and diffuse, incident on a horizontal surface is defined as global

shortwave radiation, or shortwave irradiance (incident radiant flux), and is expressed in Watts per square meter (W m-2, equal

to Joules per second per square meter).

Pyranometers are sensors that measure global shortwave radiation. Apogee SP series pyranometers are silicon-cell

pyranometers, and are only sensitive to a portion of the solar spectrum, approximately 350-1100 nm (approximately 80 % of

total shortwave radiation is within this range). However, silicon-cell pyranometers are calibrated to estimate total shortwave

radiation across the entire solar spectrum. Silicon-cell pyranometer specifications compare favorably to specifications for

World Meteorological Organization (WMO) moderate and good quality classifications and specifications for International

Organization of Standardization (ISO) second class and first class classifications, but because of limited spectral sensitivity,

they do not meet the spectral specification necessary for WMO or ISO certification.

Typical applications of silicon-cell pyranometers include incoming shortwave radiation measurement in agricultural,

ecological, and hydrological weather networks, and solar panel arrays.

Apogee Instruments SP series pyranometers consist of a cast acrylic diffuser (filter), photodiode, and signal processing

circuitry mounted in an anodized aluminum housing, and a cable to connect the sensor to a measurement device. Sensors

are potted solid with no internal air space and are designed for continuous total shortwave radiation measurement on a

planar surface in outdoor environments. SP series sensors output an analog voltage that is directly proportional to total

shortwave radiation from the sun. The voltage signal from the sensor is directly proportional to radiation incident on a planar

surface (does not have to be horizontal), where the radiation emanates from all angles of a hemisphere.

SENSOR MODELS

This manual covers the USB smart sensor model SP-422. For additional models see manuals SP-110/SP-230, SP-212/SP-215,

and SP-214.

Model

Signal

SP-422 USB

SP-110 Self-powered

SP-230* Self-powered

SP-212 0-2.5 V

SP-214 4-20 mA

SP-215 0-5 V

Sensor model number, serial number, production date,

and calibration factor are located near the pigtail leads on

the sensor cable.

SPECIFICATIONS

Calibration Traceability

Apogee Instruments SP series pyranometers are calibrated through side-by-side comparison to the mean of four Apogee

model SP-110 transfer standard pyranometers (shortwave radiation reference) under high intensity discharge metal halide

lamps. The transfer standard pyranometers are calibrated through side-by-side comparison to the mean of at least two ISO-

classified reference pyranometers under sunlight (clear sky conditions) in Logan, Utah. Each of four ISO-classified reference

pyranometers are recalibrated on an alternating year schedule (two instruments each year) at the National Renewable

Energy Laboratory (NREL) in Golden, Colorado. NREL reference standards are calibrated to the World Radiometric Reference

(WRR) in Davos, Switzerland.

SP-422

Resolution 0.1 W m-2

Calibration Factor Custom for each sensor and stored in firmware

Calibration Uncertainty ± 5 % (see Calibration Traceability below)

Measurement Repeatability Less than 1 %

Long-term Drift

(Non-stability)

Less than 2 % per year

Non-linearity Less than 1 % (up to 1750 W m-2)

Response Time Software updates every second

Field of View 180º

Spectral Range

360 to 1120 nm (wavelengths where response is 10 % of maximum;

see Spectral Response below)

Directional (Cosine) Response ± 5 % at 75º zenith angle (see Cosine Response below)

Temperature Response 0.04 ± 0.04 % per C (see Temperature Response below)

Operating Environment

-40 to 70 C; 0 to 100 % relative humidity; can be submerged in water up to depths

of 30 m

Dimensions 24 mm diameter, 28 mm height

Mass Sensor head weighs 90 g

USB Cable 4.6 m (15 ft)

Current Draw (when Logging) 2.1 mA

Spectral Response

Temperature Response

Mean temperature response of four Apogee

silicon-cell pyranometers. Temperature response

measurements were made at approximately 10 C

intervals across a temperature range of

approximately -10 to 50 C under sunlight. Each

pyranometer had an internal thermistor to

measure temperature. At each temperature set

point, a reference blackbody pyranometer was

used to measure solar intensity.

Spectral response estimate of Apogee silicon-cell

pyranometers. Spectral response was estimated

by multiplying the spectral response of the

photodiode, diffuser, and adhesive. Spectral

response measurements of diffuser and adhesive

were made with a spectrometer, and spectral

response data for the photodiode were obtained

from the manufacturer.

Cosine Response

Mean cosine response of eleven Apogee silicon-

cell pyranometers (error bars represent two

standard deviations above and below mean).

Cosine response measurements were made

during broadband outdoor radiometer

calibrations (BORCAL) performed during two

different years at the National Renewable Energy

Laboratory (NREL) in Golden, Colorado. Cosine

response was calculated as the relative difference

of pyranometer sensitivity at each solar zenith

angle to sensitivity at 45° solar zenith angle. The

blue symbols are AM measurements, the red

symbols are PM measurements.

Directional, or cosine, response is defined as

the measurement error at a specific angle of

radiation incidence. Error for Apogee silicon-

cell pyranometers is approximately ± 2 % and

± 5 % at solar zenith angles of 45° and 75°,

respectively.

DEPLOYMENT AND INSTALLATION

Mount the sensor to a solid surface with the nylon mounting screw provided. To accurately measure total shortwave

radiation incident on a horizontal surface, the sensor must be level. An Apogee Instruments model AL-100 leveling plate is

recommended for this purpose. To facilitate mounting on a cross arm, an Apogee Instruments model AM-110 mounting

bracket is recommended.

To minimize azimuth error, the sensor should be mounted with the cable pointing toward true north in the northern

hemisphere or true south in the southern hemisphere. Azimuth error is typically less than 1 %, but it is easy to minimize by

proper cable orientation.

In addition to orienting the cable to point toward the nearest pole, the sensor should also be mounted such that

obstructions (e.g., weather station tripod/tower or other instrumentation) do not shade the sensor. Once mounted, the

green cap should be removed from the sensor. The green cap can be used as a protective covering for the sensor when it

is not in use.

Nylon Screw: 10-32x3/8

Model AL-100

SOFTWARE INSTALLATION

Installing the software on a PC

1. Double click on the installer package:

2. On the ‘Welcome’ screen, please click ‘Next’ to continue.

3. Select the radio button next to “I Agree” to the UELA… and click ‘Next’ to continue.

4. On the ‘Ready to Install the Program’ screen, click ‘Install’ to continue.

5. Click ‘Finish’ to complete the installation. There are shortcuts on your desktop and in your start bar.

Installing the software on a Mac

The software will automatically download.

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