Design, Specifications are subject to change without notice.

Ask factory for technical specifications before purchase and/or use.

Whenever a doubt about safety arises from this product, please inform us immediately for technical consultation without fail.

Ð EF75 Ð

s

Typical Characteristics

Frequency Characteristics (Sensitivity)

Frequency Characteristics (Sound Pressure Level)

35

40

45

Frequency (kHz)

Ð40

Ð45

Ð50

Ð55

Ð35

Ð40

Ð45

Ð50

Ð55

20

25

30

Frequency (kHz)

Type U / H

TypeS

TypeQ

Type Q

0

90¡

15¡

30¡

45¡

60¡

75¡

15¡

30¡

45¡

60¡

75¡

90¡

0

Ð10

Ð50

Ð30

Ð10

0

Ð30

Ð10 0

Attenuation (dB)

Le

ft

Righ

t

Ð20

Ð30

Ð40

Directivity

Ultrasonic Ceramic Sensors

0û

15û

30û

45û

60û

75û

90û

15û

30û

45û

60û

75û

90û

Ð50

Ð30

Ð10 0

Ð30

Ð10

0

Attenuation (dB)

-10

-30

-40

-20

0

Type U/H/S

0 dB= Ð41 dB

Left

Right

35

40

45

Frequency (kHz)

115

110

105

100

115

110

105

100

95

20

25

30

Frequency (kHz)

Type U / H

TypeS

TypeQ

EFRTUB25K

EFRRUB25K

Frequency (kHz)

35

40

45

Ð30

Ð35

Ð40

Ð45

Ð50

Ð55

100 kΩ

10 kΩ

3.9 kΩ

1 kΩ

Characteristic Change vs. Load Resistance

Type Q

Frequency (kHz)

35

40

45

Ð30

Ð35

Ð40

Ð45

Ð50

Ð55

100 kΩ

10 kΩ

3.9 kΩ

1 kΩ