Page 1
Air Ultrasonic Ceramic Transducers
Sensitivity (dB)
SPL (dB)
Impedance (Ohm)
Phase Angle (Degree)
Specification
400ST/R160
Dimensions: dimensions are in mm
Impedance/Phase Angle vs. Frequency
Tested under 1Vrms Oscillation Level
400SR160 Impedance
400SR160 Phase
400ST160 Impedance
400ST160 Phase
400ST160
400SR160
Center Frequency
Transmitter
Receiver
40.0±1.0Khz
Bandwidth (-6dB) 400ST160 2.0Khz
400SR160 2.5Khz
Transmitting Sound Pressure
120dB min.
Level
at 40.0Khz; 0dB re 0.0002µbar
per 10Vrms at 30cm
Receiving Sensitivity
-65dB min.
at 40.0Khz 0dB = 1 volt/µbar
Capacitance at 1Khz ±20%
2400 pF
Max. Driving Voltage (cont.) 20Vrms
Total Beam Angle
Operation Temperature
Storage Temperature
-6dB
55° typical
-30 to 80°C
-40 to 85°C
100000
10000
1000
100
35 36 37 38 39 40 41 42 43 44 45
Frequency (Khz)
Sensitivity/Sound Pressure Level
Tested under 10Vrms @30cm
-50
-55
-60
-65
-70
-75
-80
-85
-90
35 36 37 38 39 40 41 42 43 44 45
Frequency (Khz)
130
125
120
115
110
105
100
95
90
Beam Angle: Tested at 40.0Khz frequency
90
75
60
45
30
15
0
-15
-30
-45
-60
-75
-90
All specification taken typical at 25°C
Closer frequency tolerance can be supplied
upon request.
Models available:
1 400ST/R160 Aluminum Housing
2 400ST/R16B Black Al. Housing
2 400ST/R10P Plastic Housing
3 400ST/R16F Al. Housing w/Solid Grid
270
300
240
330
210
0
180
0
-6
-12
-18
-24
-30
-36
30
60
90
120
150
Page 2
Air Ultrasonic Ceramic Transducers
Sensitivity (dB)
SPL (dB)
SPL (dB)
Sensitivity (dB)
Fc Variation %
Fc Variation %
Fc Variation %
Fc Variation %
400ST/R160
400SR160 Receiver
Sensitivity Variation vs. Loaded Resistor
-40
-45
-50
-55
-60
-65
-70
-75
-80
1K 3.9K 10K 39K 100K 390K
Loaded Resistor (Ohm)
Center Frequency Shift vs. Loaded Resistor
3.0
2.0
1.0
0.0
-1.0
-2.0
-3.0
1K 3.9K 10K 39K 100K 390K
Loaded Resistor (Ohm)
400ST160 Transmitter
SPL Variation vs. Driving Voltage
125
120
115
110
105
100
95
90
85
0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30
Vrms
Center Frequency Shift vs. Driving Voltage
0.0
-1.0
-2.0
-3.0
-4.0
-5.0
0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30
Vrms
Sensitivity Variation vs. Temperature
-40
-45
-50
-55
-60
-65
-70
-75
-80
-40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100
Temperature (Degree C)
Center Frequency Shift vs. Temperature
3.0
2.0
1.0
0.0
-1.0
-2.0
-3.0
-40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100
Temperature (Degree C)
SPL Variation vs. Temperature
130
125
120
115
110
105
100
95
90
-40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100
Temperature (Degree C)
Center Frequency Shift vs. Temperature
3.0
2.0
1.0
0.0
-1.0
-2.0
-3.0
-40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100
Temperature (Degree C)
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