HunterLab SpectraTrend HT, Руководство пользователя

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SpectraTrend HT User’s Guide 3.2
17
INSTALLATION
Mounting the SpectraTrend Sensor
The sensor box is equipped with a mounting plate which can be used to mount the sensor in a
variety of ways. The sensor must be installed in accordance with the applicable HunterLab
installation drawing, which is included at the end of this chapter for reference. The following
factors, as well as the details shown in the installation drawing, should be considered in making
this installation.
Presentation of the product to the sensor
The sensor must be located where it can view the product in a stable condition representative
of the product color. If the product is carried on a flexible belt conveyer, the sensor should be
located at or close to a point where the conveyer is supported from below. The sensor window
must be located 2.5 to 4.5 inches (63.5-114.3 mm) from the product, with the optimum
distance being 3.25 inches (82.5 mm).
Access to the sensor
It will be necessary to have physical access to the sensor for standardization and maintenance
at regular intervals, so convenient access should be available.
Sensor environment
While the sensor is rugged and sealed, accumulated contamination on the sensor window will
eventually degrade performance. The more contaminants to which the sensor is subjected
(dust, oil, crumbs, etc.), the more frequently it will need to be cleaned to maintain
performance. The ambient air temperature and relative humidity must remain within the
intervals specified in Chapter One. The sensor window must not be facing into any type of
bright light.
Clearance for plant maintenance
The sensor and mount should be sited so that they are neither in the way nor vulnerable during
plant maintenance.
Note: Welding near the SpectraTrend HT system can cause damage to the
sensor and will void your warranty.
Connecting the SpectraTrend Sensor
Insert the black round connector-end of the grey 24V I/O System Cable (as shown in Figure 2-1)
into the round pronged slot located on the top side of the sensor. Align the holes on the I/O
cable connector with the prongs on the sensor to connect.