Apogee SQ-521 Manuel - Sayfa 5

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Preparation

Mounting

INSTALLATION

Table 1 Installation (continued)

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.).

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.