Apogee Instruments SQ-100X Series Bedienungsanleitung
APOGEE INSTRUMENTS, INC. | 721 WEST 1800 NORTH, LOGAN, UTAH 84321, USA
TEL: (435) 792-4700 | FAX: (435) 787-8268 | WEB: APOGEEINSTRUMENTS.COM
Copyright © 2022 Apogee Instruments, Inc.
OWNER’S MANUAL
QUANTUM SENSOR
Models SQ-100X Series
Rev: 30-Aug-2022
TABLE OF CONTENTS
Owner’s Manual ............................................................................................................................................................................... 1
Certificates of Compliance ....................................................................................................................................................... 3
Introduction ............................................................................................................................................................................. 5
Sensor Models ......................................................................................................................................................................... 6
Specifications ........................................................................................................................................................................... 7
Deployment and Installation.................................................................................................................................................. 10
Cable Connectors................................................................................................................................................................... 11
Operation and Measurement ................................................................................................................................................ 12
Maintenance and Recalibration............................................................................................................................................. 16
Troubleshooting and Customer Support................................................................................................................................ 18
Return and Warranty Policy................................................................................................................................................... 19
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: SQ-100X
Type: Quantum Sensor
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
2015/863/EU Amending Annex II to Directive 2011/65/EU (RoHS 3)
Standards referenced during compliance assessment:
EN 61326-1:2013 Electrical equipment for measurement, control, and laboratory use –EMC requirements
EN 63000:2018 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 lead (see
note below), mercury, cadmium, hexavalent chromium, polybrominated biphenyls (PBB), polybrominated
diphenyls (PBDE), bis (2-ethylhexyl) phthalate (DEHP), butyl benzyl phthalate (BBP), dibutyl phthalate (DBP), and
diisobutyl phthalate (DIBP). However, please note that articles containing greater than 0.1 % lead concentration
are RoHS 3 compliant using exemption 6c.
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 we rely on the information provided to us by our material suppliers.
Signed for and on behalf of:
Apogee Instruments, August 2022
Bruce Bugbee
President
Apogee Instruments, Inc.
CERTIFICATE OF COMPLIANCE
UK 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: SQ-100X
Type: Quantum Sensor
The object of the declaration described above is in conformity with the relevant UK Statutory Instruments and
their amendments:
2016 No. 1091 The Electromagnetic Compatibility Regulations 2016
2012 No. 3032 The Restriction of the Use of Certain Hazardous Substances in Electrical and Electronic
Equipment Regulations 2012
Standards referenced during compliance assessment:
BS EN 61326-1:2013 Electrical equipment for measurement, control, and laboratory use –EMC requirements
BS EN 63000:2018 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 lead (see
note below), mercury, cadmium, hexavalent chromium, polybrominated biphenyls (PBB), polybrominated
diphenyls (PBDE), bis (2-ethylhexyl) phthalate (DEHP), butyl benzyl phthalate (BBP), dibutyl phthalate (DBP), and
diisobutyl phthalate (DIBP). However, please note that articles containing greater than 0.1 % lead concentration
are RoHS 3 compliant using exemption 6c.
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 we rely on the information provided to us by our material suppliers.
Signed for and on behalf of:
Apogee Instruments, August 2022
Bruce Bugbee
President
Apogee Instruments, Inc.
INTRODUCTION
Radiation that drives photosynthesis is called photosynthetically active radiation (PAR) and is typically defined as
total radiation across a range of 400 to 700 nm. PAR is often expressed as photosynthetic photon flux density
(PPFD): photon flux in units of micromoles per square meter per second (µmol m-2 s-1, equal to microEinsteins per
square meter per second) summed from 400 to 700 nm (total number of photons from 400 to 700 nm). While
Einsteins and micromoles are equal (one Einstein = one mole of photons), the Einstein is not an SI unit, so
expressing PPFD as µmol m-2 s-1 is preferred.
The acronym PPF is also widely used and refers to the photosynthetic photon flux. The acronyms PPF and PPFD
refer to the same variable. The two terms have co-evolved because there is not a universal definition of the term
“flux”. Some physicists define flux as per unit area per unit time. Others define flux only as per unit time. We
have used PPFD in this manual because we feel that it is better to be more complete and possibly redundant.
Sensors that measure PPFD are often called quantum sensors due to the quantized nature of radiation. A quantum
refers to the minimum quantity of radiation, one photon, involved in physical interactions (e.g., absorption by
photosynthetic pigments). In other words, one photon is a single quantum of radiation.
Typical applications of quantum sensors include incoming PPFD measurement over plant canopies in outdoor
environments or in greenhouses and growth chambers and reflected or under-canopy (transmitted) PPFD
measurement in the same environments.
Apogee Instruments SQ-100X series quantum sensors consist of a cast acrylic diffuser (filter), interference 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 PPFD measurement in indoor or outdoor environments. SQ-100X series sensors output an analog
voltage that is directly proportional to PPFD. 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 unamplified model SQ-100X. Additional models are covered in their respective manuals.
Model
Signal
SQ-100X
Self-powered
SQ-202X
0-2.5 V
SQ-204X
4-20 mA
SQ-205X
0-5 V
SQ-420X
USB
SQ-421X
SDI-12
SQ-422X
Modbus
A sensor’s model number and serial number are
located near the pigtail leads on the sensor cable. If
you need the manufacturing date of your sensor,
please contact Apogee Instruments with the serial
number of your sensor.
SPECIFICATIONS
Calibration Traceability
Apogee SQ series quantum sensors are calibrated through side-by-side comparison to the mean of transfer
standard quantum sensors under a reference lamp. The reference quantum sensors are recalibrated with a 200 W
quartz halogen lamp traceable to the National Institute of Standards and Technology (NIST).
SQ-100X-SS
Power Supply
Self-powered
Sensitivity
0.1 mV per µmol m-2 s-1
Calibration Factor
(Reciprocal of Sensitivity)
10 µmol m-2 s-1 per mV
Calibration Uncertainty
± 5 % (see Calibration Traceability below)
Calibrated Output Range
0 to 250 mV
Measurement
Repeatability
Less than 0.5 %
Long-term Drift
(Non-stability)
Less than 2 % per year
Non-linearity
Less than 1 % (up to 2500 µmol m-2 s-1)
Response Time
Less than 1 ms
Field of View
180°
Spectral Range
370 to 650 nm (wavelengths where response is greater than 50 % of maximum; see Spectral
Response below)
Directional (Cosine)
Response
± 5 % at 75° zenith angle (see Cosine Response below)
Temperature Response
- 0.04 % per C
Operating Environment
-10 to 60 C; 0 to 100 % relative humidity; can be submerged in water up to depths of 30 m
Dimensions
24 mm diameter, 33 mm height
Mass
90 g (with 5m of lead wire)
Cable
5 m of two conductor, shielded, twisted-pair wire; TPR jacket (high water resistance, high UV
stability, flexibility in cold conditions); pigtail lead wires; stainless steel (316), M8 connector
located 25 cm from sensor head
Spectral Response
Mean spectral response of four SQ-100x
series quantum sensors compared to PPFD
weighting function. Spectral response
measurements were made at 10 nm
increments across a wavelength range of
350 to 800 nm in a monochromator with
an attached electric light source. Measured
spectral data from each quantum sensor
were normalized by the measured spectral
response of the monochromator/electric
light combination, which was measured
with a spectroradiometer.
Cosine Response
Mean cosine response of five SQ-
100X series quantum sensors.
Cosine response measurements
were made by direct side-by-side
comparison to the mean of seven
reference SQ-500 quantum
sensors.
Directional, or cosine, response is defined
as the measurement error at a specific
angle of radiation incidence. Error for
Apogee SQ-100X series quantum sensors 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 prevent galvanic corrosion. To
accurately measure PPFD incident on a horizontal surface, the sensor must be level. An Apogee Instruments model
AL-100 Leveling Plate is recommended to level the sensor when used on a flat surface or being mounted to
surfaces such as wood. To facilitate mounting on a mast or pipe, the Apogee Instruments model AL-120 Solar
Mounting Bracket with Leveling Plate 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 blue cap should be removed from the sensor. The blue cap can be used as a protective covering for
the sensor when it is not in use.
Nylon Screw: 10-32x3/8
Important: Only use the nylon screw provided
when mounting to insulate the non-anodized
threads of the aluminum sensor head from the
base to help prevent galvanic corrosion. For
extended submersion applications, more insulation
may be necessary. Contact Apogee tech support for
details.
Nylon Screw: 10-32x3/8
Model AL-120
Model AL-100
Inhaltsverzeichnis
Andere Apogee Instruments Sicherheitssensor Handbücher
