328ER250 PROWAVE, 328ER250 Datasheet
328ER250
Manufacturer Part Number
328ER250
Description
RECEIVER, ULTRASONIC, 32.8KHZ, 25MM
Manufacturer
PROWAVE
Datasheet
1.328ER250.pdf
(2 pages)
Specifications of 328ER250
Sensor Type
Receiver
Sensitivity
-67dB
Beam Divergence
33°
External Diameter
25mm
Operating Temperature Range
-30°C To +80°C
Svhc
No SVHC (18-Jun-2010)
Angle
33°
Frequency
32.8kHz
Capacitance
2400pF
Rohs Compliant
Yes
External Length / Height
12mm
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Specification
328ET250
328ER250
Center Frequency
Bandwidth (-6dB) 328ET250
Transmitting Sound Pressure
Level
at 32.8Khz; 0dB re 0.0002µbar
per 10Vrms at 30cm
Receiving Sensitivity
at 32.8Khz 0dB = 1 volt/µbar
Capacitance at 1Khz ±20%
Max. Driving Voltage (cont.)
Total Beam Angle
Operation Temperature
Storage Temperature
All specification taken typical at 25°C
Closer frequency tolerance can be supplied
upon request.
Model available:
1
2
3
Air Ultrasonic Ceramic Transducers
328ET/R250
328ET/R25B
328ET/R25S
328ER250
Aluminum Housing
Black Alum. Housing
SUS 316 Housing
-6dB
Transmitter
Receiver
32.8±1.0Khz
1.0Khz
1.0Khz
113dB min.
(107dB min.
SUS 316)
-67dB min.
(-70dB min.
SUS 316)
2400 pF
20Vrms
33° typical
-30 to 80°C
-40 to 85°C
Dimensions:
Impedance/Phase Angle vs. Frequency
Tested under 1Vrms Oscillation Level
328ER250 Impedance
328ER250 Phase
328ET250 Impedance
328ET250 Phase
Sensitivity/Sound Pressure Level
Tested under 10Vrms @30cm
Beam Angle
-50
-55
-60
-65
-70
-75
-80
-85
-90
100000
10000
1000
100
28
28
29
270
29
300
240
30
: Tested at 32.8Khz frequency
dimensions are in mm
30
31
330
210
31
Frequency (Khz)
32
Frequency (Khz)
32
0
180
33
-6
-12
-18
-24
-30
0
33
34
30
150
34
35
35
60
120
90
36
328ET/R250
36
37
37
38
38
90
75
60
45
30
15
0
-15
-30
-45
-60
-75
-90
130
125
120
115
110
105
100
95
90
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328ER250 Summary of contents
Page 1
... Model available: 1 328ET/R250 Aluminum Housing 2 328ET/R25B Black Alum. Housing 3 328ET/R25S SUS 316 Housing Dimensions: Impedance/Phase Angle vs. Frequency Tested under 1Vrms Oscillation Level 328ER250 Impedance 328ER250 Phase 328ET250 Impedance 328ET250 Phase 100000 Transmitter 10000 Receiver 32.8±1.0Khz 1000 1.0Khz 100 28 1.0Khz 113dB min. ...
Page 2
... Air Ultrasonic Ceramic Transducers 328ER250 Receiver Sensitivity Variation vs. Loaded Resistor -40 -45 -50 -55 -60 -65 -70 -75 -80 1K 3.9K 10K Loaded Resistor (Ohm) Center Frequency Shift vs. Loaded Resistor 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 Loaded Resistor (Ohm) Sensitivity Variation vs ...