250SR160

Telephone +44 (0)1493 602602 Fax +44 (0)1493 665111 Email:sales@midassensors.com www.midassensors.com Electra House, 32 Southtown Road Great Yarmouth, Norfolk NR31 0DU, England PROWAVE Air Ultrasonic Ceramic Transducers 250ST/R160 Dimensions: dimensions are in mm Impedance/Phase Angle vs. Frequency Specification Transmitter 250SR160 Receiver Center Frequency 25.0±1.0Khz Bandwidth (-6dB) 250ST160 2.0Khz 250SR160 2.0Khz 20 21 22 23 24 25 26 Frequency (Khz) 27 28 29 30 Sensitivity/Sound Pressure Level Tested under 10Vrms @30cm -62dB min. 2400 pF 20Vrms -30 to 80°C Storage Temperature -40 to 85°C 85° typical -50 130 -55 125 -60 120 -65 115 -70 110 -75 105 -80 100 -85 95 -90 90 20 All specification taken typical at 25°C Closer frequency tolerance can be supplied upon request. 21 22 23 Aluminum Housing Black Al. Housing Al. Housing w/Solid Grid Plastic Housing 24 25 26 27 28 29 Frequency (Khz) Beam Angle: Tested at 25.0Khz frequency 330 300 Model available: 250ST/R160 250ST/R16B 250ST/R16F 250ST/R16P 1000 112dB min. -6dB Total Beam Angle Operation Temperature 1 2 3 4 10000 270 0 0 -6 -12 -18 -24 -30 30 60 90 240 120 210 180 150 30 SPL (dB) Max. Driving Voltage (cont.) 90 75 60 45 30 15 0 -15 -30 -45 -60 -75 -90 100 Sensitivity (dB) Transmitting Sound Pressure Level at 25.0Khz; 0dB re 0.0002µbar per 10Vrms at 30cm Receiving Sensitivity at 25.0Khz 0dB = 1 volt/µbar Capacitance at 1Khz ±20% Impedance (Ohm) 100000 250ST160 Phase (Degree) Tested under 1Vrms Oscillation Level 250SR160 Impedance 250SR160 Phase 250ST160 Impedance 250ST160 Phase PROWAVE Air Ultrasonic Ceramic Transducers 250ST/R160 250ST160 Transmitter Sensitivity Variation vs. Loaded Resistor SPL Variation vs. Driving Voltage -40 130 -45 125 -50 120 -55 115 SPL (dB) Sensitivity (dB) 250SR160 Receiver -60 -65 110 105 -70 100 -75 95 90 -80 1K 3.9K 10K 39K 100K 0 390K 2 4 6 8 10 12 14 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 22 24 26 28 30 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 Vrms Sensitivity Variation vs. Temperature SPL Variation vs. Temperature -40 130 -45 125 -50 120 -55 115 SPL (dB) Sensitivity (dB) 20 0 -0.5 -1 -1.5 -2 -2.5 -3 -3.5 -4 -4.5 -5 -5.5 -6 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 % -10 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 Temperature (Degree C) Center Frequency Shift vs. Temperature Fc Variation % 18 Center Frequency Shift vs. Driving Voltage Fc Variation % Fc Variation % Center Frequency Shift vs. Loaded Resistor 1K 16 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