
281114 v1.3
Operating Instructions USi
Page 17/43
Polymer Electric
Installation
Installation
The installation includes three individual installation steps:
1. Mounting the sensor (ultrasonic transducer)
2. Mounting the Evaluation Unit
3. Wiring the unit cable
Mounting the Sensor (Ultrasonic Transducer)
The sensors can be mounted in any position.
If the sensors are supposed to be mounted in quiet workplaces or in areas where
there are hearing-sensitive animals, the interfering soni
fi
cation must be considered.
Ultrasound is not audible for human beings. The “hard” transmission burst, however,
is perceived as a clearly audible crackle. At a measurement frequency of 20
Hz
(typical), 20 crackles per second are audible. This can be stressful when continu-
ous. Here, it is recommended to not align the sensor directly to the ears, but at an
angle of at least 20°. The same applies for indirect soni
fi
cation re
fl
ected from hard
re
fl
ectors like e.g. walls.
Alternatively, the transmission intensity can be altered via the parameter assign-
ment software (optional).
1. Place one O-Ring in each of the grooves N1 and N2 of the sensor. To do so,
select the corresponding O-rings for the speci
fi
ed mounting
fi
xture (see
below).
Standard mounting
fi
xture
– clamping version –
Optimised mounting
fi
xture
– integrated version –
Tolerances: ISO 2768-1 c
Tolerances: ISO 2768-1 m
with O-rings 18.0
×
2.5 mm
Part number 7502819 (optional)
with O-rings 17.5
×
2.0 mm
Part number 7502820 (optional)
2. Mount the sensor (ultrasonic transducer) in any position in the mounting
brackets.
Sensor:
Dimensions