ETC 400STR120

Air Ultrasonic Ceramic Transducers
400ST/R120
Dimensions: dimensions are in mm
Impedance/Phase Angle vs. Frequency
400ST120
Transmitter
400SR120
Receiver
Center Frequency
40.0±1.0Khz
Bandwidth (-6dB) 400ST120
2.0Khz
400SR120
2.0Khz
-6dB
Total Beam Angle
Operation Temperature
Storage Temperature
1000
35
115dB min.
36
37
38
41
42
43
44
45
Tested under 10Vrms @30cm
-67dB min.
2400 pF
20Vrms
85° typical
-30 to 80°C
-50
130
-55
125
-60
120
-65
115
-70
110
-75
105
-80
100
-85
95
-90
90
35
36
37
38
40
41
42
43
44
45
Beam Angle: Tested at 40.0Khz frequency
330
300
Aluminum Housing
Black Al. Housing
39
Frequency (Khz)
-40 to 85°C
Model available:
400ST/R120
400ST/R12B
40
Sensitivity/Sound Pressure Level
All specification taken typical at 25°C
Closer frequency tolerance can be supplied
upon request.
1
2
39
Frequency (Khz)
SPL (dB)
Max. Driving Voltage (cont.)
10000
100
Sensitivity (dB)
Transmitting Sound Pressure
Level
at 40.0Khz; 0dB re 0.0002µbar
per 10Vrms at 30cm
Receiving Sensitivity
at 40.0Khz 0dB = 1 volt/µbar
Capacitance at 1Khz ±20%
90.0
75.0
60.0
45.0
30.0
15.0
0.0
-15.0
-30.0
-45.0
-60.0
-75.0
-90.0
100000
Impedance (Ohm)
Specification
Phase Angle (Degree)
Tested under 1Vrms Oscillation Level
400SR120 Impedance
400SR120 Phase
400ST120 Impedance
400ST120 Phase
270
0
0
-6
-12
-18
-24
-30
30
60
90
240
120
210
180
150
Supplied by Midas Components Ltd - 01493 602602 - www.midascomponents.co.uk
Air Ultrasonic Ceramic Transducers
400ST/R120
400SR120 Receiver
400ST120 Transmitter
Sensitivity Variation vs. Loaded Resistor
SPL Variation vs. Driving Voltage
-45
125
120
-50
115
SPL (dB)
Sensitivity (dB)
-40
-55
-60
110
105
-70
100
95
-75
90
-65
85
-80
1K
3.9K
10K
39K
100K
0
390K
2
4
6
8
10
12
5.0
4.0
3.0
2.0
1.0
0.0
-1.0
-2.0
-3.0
-4.0
-5.0
3.9K
10K
39K
100K
0
390K
20
22 24
26
28
30
2
4
6
8
10 12
14 16
18 20
22 24
26 28
30
Vrms
SPL Variation vs. Temperature
Sensitivity Variation vs. Temperature
-40
130
-45
125
-50
120
-55
115
SPL (dB)
Sensitivity (dB)
18
0.0
-0.5
-1.0
-1.5
-2.0
-2.5
-3.0
-3.5
-4.0
-4.5
-5.0
-5.5
-6.0
Loaded Resistor (Ohm)
-60
-65
110
105
-70
100
-75
95
-80
90
-40 -30
-20 -10
0
10
20
30
40
50
60
70
80
90
100
-40 -30 -20 -10
0
Temperature (Degree C)
Fc Variation %
0
10
20
30
40
50
Temperature (Degree C)
20
30
40
50
60
70
80
90
100
Center Frequency Shift vs. Temperature
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
10
Temperature (Degree C)
Center Frequency Shift vs. Temperature
Fc Variation %
16
Center Frequency Shift vs. Driving Voltage
Fc Variation %
Fc Variation %
Center Frequency Shift vs. Loaded Resistor
1K
14
Vrms
Loaded Resistor (Ohm)
60
70
80
90
100
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
Temperature (Degree C)
60
70
80
90
100