Air Ultrasonic Ceramic Transducers
Tested under 1Vrms Oscillation Level
250ER250 Impedance
250ER250 Phase
250ET250 Impedance
250ET250 Phase
100K
250ET/R250
Impedance/Phase Angle vs. Frequency
90
75
60
45
10K
Z(Ω)
30
15
0
-15
θ(°)
Specification
250ET250
250ER250
Center Frequency
1K
-30
-45
-60
-75
28
29
-90
30
Transmitter
100
Receiver
20
21
22
23
24
25
26
27
Frequency (KHz)
25.0±1.0KHz
250ET250 1.0KHz
Bandwidth (-6dB)
Sensitivity/Sound Pressure Level
250ER250 1.0KHz
Tested under 10Vrms @30cm
Transmitting Sound Pressure Level
113dB min.
131
at 25.0KHz; 0dB re 0.0002μbar per 10Vrms at 30cm
125
Receiving Sensitivity
-63dB min.
at 25.0KHz 0dB = 1 volt/μbar
-45
-51
-57
-63
-69
-75
-81
-87
-93
Sensitivity (dB)
Capacitance at 1KHz ±20%
Max. Driving Voltage (cont.)
Total Beam Angle
-6dB
Operation Temperature
Storage Temperature
2800 pF
15Vrms
40° typical
-30 to 70℃
-40 to 80℃
119
113
Sound Pressure Level (dB)
107
101
95
89
83
77
20
21
22
23
24
25
26
Frequency (KHz)
27
28
29
All specification taken typical at 25℃
Closer frequency tolerance can be supplied upon request.
-99
30
Model available:
1 250ET/R250
Aluminum Housing
Beam Angle
Tested at 25.0Khz frequency
-15°
-30°
-45°
-60°
0°
15°
30°
45°
60°
Dimensions:
dimensions are in mm
-75°
75°
-90°
0dB -6dB -12dB -18dB -24dB
90°
S. Square Enterprise Company Limited
Pro-Wave Electronics Corporation
http://www.pro-wave.com.tw
; E-mail:
sales@pro-wave.com.tw
; Tel: 886-2-22465101 ; Fax: 886-2-22465105
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Air Ultrasonic Ceramic Transducers
250ER250 Receiver
Sensitivity Variation vs. Loaded Resistor
-40
-45
-50
Sensitivity (dB)
Fc Variation %
Sensitivity (dB)
Fc Variation %
-55
-60
-65
-70
-75
-80
1K
3.9K
10K
39K
Loaded Resistor (Ω)
100K
390K
SPL(dB)
250ET/R250
250ET250 Transmitter
SPL Variation vs. Driving Voltage
130
125
120
115
110
105
100
95
90
0
2
4
6
8
10 12 14 16 18 20 22 24 26 28 30
Vrms
Max. Driving Voltage (Cont.) 15Vrms
Center Frequency Shift vs. Loaded Resistor
5
4
3
2
1
0
-1
-2
-3
-4
-5
1K
Center Frequency Shift vs. Driving Voltage
0
-0.5
-1
-1.5
-2
-2.5
-3
-3.5
-4
-4.5
-5
-5.5
-6
0
Fc Variation %
3.9K
10K
39K
Loaded Resistor (Ω)
100K
390K
2
4
6
8
10 12 14 16 18 20 22 24 26 28 30
Vrms
Max. Driving Voltage (Cont.) 15Vrms
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(°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(°C)
SPL(dB)
Center Frequency Shift vs. Temperature
5
4
3
2
1
0
-1
-2
-3
-4
-5
-40 -30 -20 -10
Center Frequency Shift vs. Temperature
5
4
3
2
1
0
-1
-2
-3
-4
-5
-40 -30 -20 -10
Fc Variation %
0
10 20 30 40 50 60 70 80 90 100
Temperature(°C)
0
10 20 30 40 50 60 70 80 90 100
Temperature(°C)
S. Square Enterprise Company Limited
Pro-Wave Electronics Corporation
http://www.pro-wave.com.tw
; E-mail:
sales@pro-wave.com.tw
; Tel: 886-2-22465101 ; Fax: 886-2-22465105
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