35.5 (1.4)
119.5 (4.7)
136.8 (5.39)
71.8 (2.83)
40 (1.58)
32.5 (1.28)
40 (1.58)
Figure 6: RFU630-041xx: Dimensions of the threaded mounting hole, unit: mm (inch), decimal
separator: period
3.2.2 Read range
The environment influences the UHF field of the integrated antenna, making it impossi‐
ble to provide a “clear” demarcation of the sensing range of the reading field:
•
Application-specific reflections can result in both overreaches and “holes”
(destructive interferences).
•
Other factors that can significantly impact the read range include:
°
Orientation of the transponder antenna relative to the antenna of the device
°
Transponder quality: The quality depends on the antenna gain, the integrated
transponder chip and its sensitivity, the reflected energy.
°
Material of the carrier object (plastic, wood, metal)
°
Objects between the device and transponder that can affect the UHF field
(items, liquids, people).
In addition to the read results, the device can also output diagnostic data. The diagnos‐
tic data (e.g., RSSI values) provide an indication of the read quality. This diagnostic data
can be used to achieve optimum read results when setting up the system.
The radiation pattern for the device’s antenna was obtained in a reproducible environ‐
ment for illustrative purposes. For this purpose, an anechoic chamber was used as a
reflection-free room.
The diagram shows how the UHF field propagates in a reflection-free space. The dia‐
gram cannot be used to draw any conclusions on the likely sensing range of the reading
field in a real on-site application.
PRODUCT DESCRIPTION 3
8027750//2022-12-15 | SICK O P E R A T I N G I N S T R U C T I O N S | RFU63x
19
Subject to change without notice
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