# Transducer, Receiver, Ultrasonic, Receiver, 113 dB ![Product image](https://novapart.co/image/farnell:1007346/) **URL**: https://novapart.co/products/328ER250/transducer-receiver-ultrasonic-113-db **SKU**: 328ER250 **Manufacturer**: PROWAVE **Category**: Sensors & Transducers || Transducers || Sensing Transducers || Piezo Transducers **Price**: €15.2500 **Stock**: 10+ **Lead Time**: 33 days (indicative) ## Specifications | Parameter | Value | |---|---| | Product Range | 328Ex250 | | Sound Level Spl | 113dB | | Resonant Frequency | 32.8kHz | | Transducer Function | Receiver | | Sound Level Distance | 30cm | ## Datasheet 📄 [Download PDF](https://novapart.co/datasheet/farnell:1007346/) Electra House, 32 Southtown Road Great Yarmouth, Norfolk NR31 0DU, England Telephone +44 (0)1493 602602 Fax +44 (0)1493 665111 Email:sales@midassensors.com www.midassensors.com ## **PROWAVE** ## **Air Ultrasonic Ceramic Transducers** ## **328ET/R250** ## **Dimensions:** dimensions are in mm ## **Impedance/Phase Angle vs. Frequency** ## **Specification** Tested under 1Vrms Oscillation Level 328ER250 Impedance 328ER250 Phase 328ET250 Impedance 328ET250 Phase **==> picture [215 x 266] intentionally omitted <==** **----- Start of picture text -----**
100000 90
75
60
ee 45
10000 attdt i 3015
SGneeeget 0
6 ———= -15
1000 -30
-45
MN -60
100 2a | -75-90
28 29 30 31 32 33 34 35 36 37 38
Frequency (Khz)
Sensitivity/Sound Pressure Level
Tested under 10Vrms @30cm
-50 130
-55 PET TET ET EET Ey ty yyy 125
-60 PP ETT eye yy eT 120
-65 ptt TT PAWN TET TT TT 115
-70 PIT TIAL IAIN 110
-75 105
Peet] TTT
-80 p= 72aes| | | NAT I 100
-85 Pit | 95
-90 PET eTTeyyeeye T e y terE y etPREet 90
28 29 30 31 32 33 34 35 36 37 38
Frequency (Khz)
Impedance (Ohm)
Phase Angle (Degree)
SPL (dB)
Sensitivity (dB)
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|**328ET250**
**328ER250**
**Center Frequency**
**Bandwidth**(-6dB)
328ET250|Transmitter
Receiver
32.8±1.0Khz
1.0Khz| |---|---| |328ER250|1.0Khz| |**Transmitting Sound Pressure**|113dB min.| |**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**
-6dB|-67dB min.
2400 pF
20Vrms
33°typical| |**Operation Temperature**|-30 to 80°C| |**Storage Temperature**|-40 to 85°C| ## **Sensitivity/Sound Pressure Level** Tested under 10Vrms @30cm **Beam Angle** : Tested at 32.8Khz frequency All specification taken typical at 25 ° C Closer frequency tolerance can be supplied upon request. **==> picture [421 x 116] intentionally omitted <==** **----- Start of picture text -----**
0
330 30
upon request. Af 0 -6 \»
300 -12 60
CP IA
Model available: -18 -24
270 [Taa e stan -30 a 90
240 W\ \ KZ AN a asae J 120
1 328ET/R250 Aluminum Housing
210 150
2 328ET/R25B Black Alum. Housing 180
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**Air Ultrasonic Ceramic Transducers** **PROWAVE** **328ET/R250** ## **328ER250 Receiver** ## **328ET250 Transmitter** ## **Sensitivity Variation vs. Loaded Resistor** ## **SPL Variation vs. Driving Voltage** **==> picture [212 x 97] intentionally omitted <==** **----- Start of picture text -----**
-40
-45
-50
-55
-60
-65
-70
-75
-80
1K 3.9K 10K 39K 100K 390K
Loaded Resistor (Ohm)
Sensitivity (dB)
**----- End of picture text -----**
**==> picture [211 x 96] intentionally omitted <==** **----- Start of picture text -----**
130
125
120
115
110
Max. Driving Voltage (Cont.) 20Vrms
105
100
95
90
0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30
Vrms
SPL (dB)
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## **Center Frequency Shift vs. Loaded Resistor** ## **Center Frequency Shift vs. Driving Voltage** **==> picture [212 x 268] intentionally omitted <==** **----- Start of picture text -----**
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)
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)
Fc Variation %
Sensitivity (dB)
**----- End of picture text -----**
## **Sensitivity Variation vs. Temperature** **==> picture [212 x 268] intentionally omitted <==** **----- Start of picture text -----**
0.0
-1.0
-2.0
-3.0
-4.0
Max. Driving Voltage (Cont.) 20Vrms
-5.0
-6.0
-7.0
0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30
Vrms
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)
Fc Variation %
SPL (dB)
**----- End of picture text -----**
## **SPL Variation vs. Temperature** ## **Center Frequency Shift vs. Temperature** ## **Center Frequency Shift vs. Temperature** **==> picture [464 x 98] intentionally omitted <==** **----- Start of picture text -----**
5.0 5.0
4.0 4.0
3.0 3.0
2.0 2.0
1.0 1.0
0.0 0.0
-1.0 -1.0
-2.0 -2.0
-3.0 -3.0
-4.0 -4.0
-5.0 -5.0
-40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100
Temperature (Degree C) Temperature (Degree C)
Fc Variation % Fc Variation %
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