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Air Ultrasonic Ceramic Transducers
400ST/R120
400SR120 Receiver
Sensitivity Variation vs. Loaded Resistor
Center Frequency Shift vs. Loaded Resistor
Sensitivity Variation vs. Temperature
Center Frequency Shift vs. Temperature
400ST120 Transmitter
SPL Variation vs. Driving Voltage
Center Frequency Shift vs. Driving Voltage
SPL Variation vs. Temperature
Center Frequency Shift vs. Temperature
-80
-75
-70
-65
-60
-55
-50
-45
-40
1K
3.9K
10K
39K
100K
390K
Loaded Resistor (Ohm)
-5.0
-4.0
-3.0
-2.0
-1.0
0.0
1.0
2.0
3.0
4.0
5.0
1K
3.9K
10K
39K
100K
390K
Loaded Resistor (Ohm)
85
90
95
100
105
110
115
120
125
0
2
4
6
8
10
12
14
16
18
20
22
24
26
28
30
Vrms
-6.0
-5.5
-5.0
-4.5
-4.0
-3.5
-3.0
-2.5
-2.0
-1.5
-1.0
-0.5
0.0
0
2
4
6
8
10
12
14
16
18
20
22
24
26
28
30
Vrms
-80
-75
-70
-65
-60
-55
-50
-45
-40
-40
-30
-20
-10
0
10
20
30
40
50
60
70
80
90
100
Temperature (Degree C)
-5.0
-4.0
-3.0
-2.0
-1.0
0.0
1.0
2.0
3.0
4.0
5.0
-40
-30 -20
-10
0
10
20
30
40
50
60
70
80
90
100
Temperature (Degree C)
90
95
100
105
110
115
120
125
130
-40
-30
-20
-10
0
10
20
30
40
50
60
70
80
90
100
Temperature (Degree C)
-5.0
-4.0
-3.0
-2.0
-1.0
0.0
1.0
2.0
3.0
4.0
5.0
-40
-30 -20
-10
0
10
20
30
40
50
60
70
80
90
100
Temperature (Degree C)
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