Apogee Quantum Manuel utilisateur

APOGEE QUANTUM

TABLE OF CONTENTS

1. Introduction.............................................................................................. 2

2. Installation................................................................................................2

2.1 Set Up Mounting Post ................................................................................4

2.2 Connect to METER ZENTRA Series Logger .................................................5

3. Data Interpretation ..............................................................................6

4. Troubleshooting ..................................................................................... 6

5. Customer Support ................................................................................6

Index ...................................................................................................................8

18474-00

7.31.2021

USING APOGEE QUANTUM SENSORS WITH ZENTRA SYSTEM

1. INTRODUCTION

The SQ-521 Full-Spectrum Quantum sensors from Apogee Instruments, Inc. are high-

accuracy, single-band radiometers designed for continuous measurement of photosynthetic

photon flux density (PPFD) or photosynthetically active radiation (PAR) measurement in

indoor or outdoor environments. The Apogee Full-Spectrum Quantum sensor has nearly

equal sensitivity across the spectral range from 389–692 nm (PAR band is 400–700 nm)

and is therefore a good choice for both above- and below-canopy measurement in outdoor

environments and also for indoor environments, where artificial light sources are used.

The information in this document explains how to install the required hardware to mount

Apogee SQ-521 sensors that have been preconfigured by METER Group to work seamlessly

with METER ZENTRA series data loggers. Details of how the ZENTRA system handles the

data are also included. Please read this document carefully in its entirety before going out to

the field.

For more information on Apogee Full-Spectrum Quantum Sensor, please review the

SQ-521 user manual (apogeeinstruments.com/sq-521-ss-sdi-12-digital-output-full-

spectrum-Quantum-sensor).

2. INSTALLATION

Follow the steps listed in Table 1 to install Apogee sensors in the field. A cable, mounting

bracket, leveling plate, and nylon screws are included with the sensor. Other tools will need

to be provided.

Table 1 Installation

Tools Needed

Wrench 13 mm (0.5 in)

Flathead screwdriver

Mounting post 33.0 to 53.3 mm (1.3 to 2.1 in) diameter post, pole, tripod,

tower, or other similar infrastructure that extends above the canopy

Mounting bracket + leveling plate Model AL-120

Nylon screw 10-32 x 3/8

METER ZENTRA series data logger ZL6 or EM60

METER ZENTRA software ZENTRA Utility, ZENTRA Utility Mobile, or

ZENTRACloud

INSTALLATION

Table 1 Installation (continued)

Preparation

Conduct System Check

METER strongly recommends setting up and testing the system (sensors and

data loggers) in the lab or ofﬁce.

Inspect and verify all components are intact.

Visit the data logger product page for the most up-to-date software and ﬁrmware.

Verify all sensors are functional and read within expected ranges.

Consider the Surroundings

For measurement of incoming PPFD in the outdoor environment, choose a

location that allows the hemispherical view Quantum sensor to be above the

plant canopy or in a position where the view of the sky is unobstructed (such

as a large canopy gap or forest clearing).

Ensure the sensor is not shaded from nearby objects (weather stations,

mounting posts, etc.).

Mounting

Install on Mounting Post

Use the U-bolt to mount the mounting bracket and sensor assembly

(Section2.1). The U-bolt is compatible with most meterological stands, poles,

tripods, and other mounts.

Ensure the sensor is oriented so the cable points toward true North (in the

Northern hemisphere) or true South (in the Southern hemisphere) to reduce

azimuth error.

Secure the System

Tighten the U-bolt nuts by hand until hand-tight, and then tighten with a wrench.

CAUTION: Do not overtighten U-bolt.

Adjust the three machine screws on the leveling plate until the integrated

bubble level indicates that the sensor is level

Secure and Protect Cables

NOTE: Improperly protected cables can lead to severed cables or disconnected sensors.

Cabling issues can be caused by many factors such as rodent damage, driving over sensor

cables, tripping over cables, not leaving enough cable slack during installation, or poor

sensor wiring connections.

Install cables in conduit or plastic cladding when near the ground to avoid

rodent damage.

Gather and secure cables between the sensors and the data logger to the

mounting post in one or more places to ensure cable weight does not pull the

plug free from its port.

Connect to Data Logger

Plug the sensor into a data logger.

Use the data logger to make sure the sensor is reading properly.

Verify these readings are within expected ranges.

For more instructions on connecting to data loggers, refer to Section2.2.

USING APOGEE QUANTUM SENSORS WITH ZENTRA SYSTEM

2.1 SET UP MOUNTING ASSEMBLY

Apogee Quantum sensors must be level to accurately measure PPFD incident on a horizontal

surface. Each Apogee Quantum sensor purchased from METER comes with an AL-120 Solar

Mounting Bracket with Leveling Plate. The AL-120 can be mounted to either a horizontal or

vertical post, depending on which set of holes is used.

1. Align the cable M8 connector with the sensor M8 connector and seat connectors fully.

2. Tighten the cable screw to maximum hand-tight (Figure1).

M8 connectors are easy to overtighten. Do not use pliers or other tools to tighten

thisconnector.

Cable screw

Figure1 Attach M8 connector

3. Mount the sensor to the leveling plate (Figure2) with the included nylon screw.

Mounting bracket

(AL-120)

Sensor

(SQ-521)

Leveling plate

U-bolt

Figure2 Apogee Quantum sensor mounting assembly

4. Attach the leveling plate to the mounting bracket using the three machine screws

included.

5. Attach the mounting bracket either to a horizontal arm (Figure2) or vertical post using

the included U-bolt.

INSTALLATION

2.2 CONNECT TO METER ZENTRA SERIES LOGGER

Apogee Quantum sensors are preconfigured by METER and work seamlessly with METER

ZENTRA series data loggers. The sensors come with a 3.5-mm stereo plug connector

(Figure3) to facilitate easy connection with the data loggers. Apogee sensors come standard

with a 5-m cable.

Ground

Digital

communication (orange)

Power (brown)

Figure3 3.5-mm stereo plug connector wiring

Check the METER download webpage for the most recent data logger firmware. Logger

configuration may be done using either ZENTRA Utility (desktop and mobile application) or

ZENTRA Cloud (web-based application for cell-enabled ZENTRA data loggers).

1. Plug the stereo plug connector into one of the sensor ports on the logger (Figure4).

Port 1Port 2Port3Port 4 Po rt5Port 6

TEST

ERROR

(-)

(-)(-) (-)

(-)(+)(-)(+)(+)

(+)(+)(+)

Figure4 Logger connection

2. Connect to the data logger via ZENTRA Utility with a laptop and USB cable or ZENTRA

Utility Mobile app with a mobile device supporting Bluetooth®communication.

3. Use ZENTRA Utility to scan the ports and make sure the sensors were properly identiﬁed

by the logger and are reading properly.

METER data loggers should automatically recognize the Apogee sensor.

4. Use ZENTRA Utility to set the measurement interval.

5. Use ZENTRA Utility to conﬁgure communication settings for data transfer to ZENTRA Cloud.

Sensor data can be downloaded from METER data loggers using either ZENTRA Utility or

ZENTRA Cloud. Refer to the logger user manual for more information.

USING APOGEE QUANTUM SENSORS WITH ZENTRA SYSTEM

3. DATA INTERPRETATION

Apogee Quantum sensors used with the ZENTRA system report PPFD in units of micromoles

per square meter per second. Additionally, the sensor orientation information is provided

in the metadata tab of ZENTRA Cloud and ZENTRA Utility Microsoft®Excel®file downloads.

Sensor orientation is reported as the zenith angle in units of degrees, with a zenith angle of

0° indicating a sensor oriented straight up.

4. TROUBLESHOOTING

This troubleshooting section details possible major problems and their solutions. If the

problem is not listed or these solutions do not solve the issue, contact Customer Support.

Table 2 Troubleshooting

Problem Possible Solution

Sensor not responding Check power to the sensor and logger.

Check sensor cable and stereo plug connector integrity.

Check that the SDI-12 address of the sensor is 0(factory default).

Check this with ZENTRA Utility by going to Actions, select Digital

sensor terminal, choose the port that sensor is on, and send the

?I! command to the sensor from the dropdown menu.

Sensor values are not reasonable Verify the sensor is not shaded.

Verify the angle of sensors.

Cable or stereo plug

connectorfailure

If the stereo plug connector is damaged or needs to be replaced,

contact Customer Support for a replacement connector or

splice kit.

If a cable is damaged refer to the METER wire-splicing guide for

cable repair.

It is recommended that Apogee Quantum sensors are returned for factory recalibration every

2 years. Visit Apogee repairs (apogeeinstruments.com/recalibration-and-repairs) or contact

Apogee Technical Support (techsupport@apogeeinstruments.com) for details.

5. CUSTOMER SUPPORT

NORTH AMERICA

Customer support representatives are available for questions, problems, or feedback

Monday through Friday, 7:00 am to 5:00 pm Pacific time.

Email: support.environment@metergroup.com

sales.environment@metergroup.com

Phone: +1.509.332.5600

CUSTOMER SUPPORT

Fax: +1.509.332.5158

Website: metergroup.com

EUROPE

Customer support representatives are available for questions, problems, or feedback

Monday through Friday, 8:00 to 17:00 Central European time.

Email: support.europe@metergroup.com

sales.europe@metergroup.com

Phone: +49 89 12 66 52 0

Fax: +49 89 12 66 52 20

Website: metergroup.de

If contacting METER by email, please include the following information:

Name

Address

Phone

Email address

Instrument serial number

Description of the problem

INDEX

cables 3, 5

components 2

connecting 5

customer support 6

installation

preparation 3

tools needed 2

mounting 3, 4

mounting bracket 2, 4

photosynthetic photon ﬂux density 2, 3, 4, 6

Quantum sensor 2, 4, 6

recalibration 6

stereo plug connector 5, 6

troubleshooting 6

U-bolt 3, 4

user manual 2

ZENTRA series data loggers 2, 5

ZENTRA software

Cloud 2, 6

Utility 2, 5, 6

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