Datasheet

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S15E.pdf
08.10.31
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Electrical Characteristics
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4. Ratings
The ratings and dimensions of representative types of
these ultrasonic sensors appear in Table 1. Also frequen
-
cy characteristics of sensitivity and sound pressure are
• Distance : 30cm, Sensitivity : 0dB=10V/Pa, Sound pressure Level : 0dB=20µPa.
• The sensor can be used in the operating temperature range.
Please refer to the individual specification for the temperature drift of Sensitivity/Sound pressure level or environmental characteristics in that
temperature range.
• Directivity, and Detectable Range typical is value. It can be changed by application circuit and fixing method of the sensor.
Part Number
Item
MA40S4R/S
Construction
Open structure type
Using Method
Receiver and Transmitter
(Dual use) type
Nominal Frequency (kHz)
40
Overall Sensitivity (dB)
–
Sensitivity (dB)
–63±3
Sound Pressure (dB)
120±3
Directivity (deg)
80
Capacitance (pF)
2550±20%
Operating
Temperature Range (°C)
–40 - +85
Detectable Range (m)
0.2 - 4
Dimension (mm)
ø9.9×7.1h
Weight (g)
0.7
Max. Input Voltage
20 Vp-p
Square wave 40kHz
Part Number
Item
MA40E7R/S MA40E8-2 MA40MF14-5B
Construction
Water proof type
Using Method
Receiver and Transmitter type Combined use type
Nominal Frequency (kHz)
40
Overall Sensitivity (dB)
–
Sensitivity (dB)
–74 min. −85min. −87min.
Sound Pressure (dB)
106 min. 103 min.
Directivity (deg)
100 75 100×50
Capacitance (pF)
2200±20% 2800 4400
Operating
Temperature Range (°C)
−30-+85 −40-+85
Detectable Range (m)
0.2 - 3 0.2 - 1.5
Dimension (mm)
ø18×12h ø14×8h ø14×9h
Weight (g)
4.5 2.4
Max. Input Voltage
100 Vp-p
Square waves 40kHz
Pulse width 0.4 ms
Interval 10
0 ms
160 Vp-p
Square waves 40kHz
Pulse width 0.8ms
Interval 6
0 ms
shown in Figs. 8 and 9 and their radiation characteris-
tics Figs. 10 and 11.