Immersible ultrasonic transducer BBUA-M

high-frequencyfor level measurement

Overview
The BBUA-M series provides 215 kHz, 300 kHz, 500 kHz and 650 kHz ultrasonic transducers for wastewater settling tanks, sludge thickeners, sludge-water interface monitoring and underwater distance measurement.
All configurations are rated for pressure up to 10 kgf (1 MPa) and carry IP68 protection. Electrical, acoustic and temperature parameters differ by frequency and must be selected as one complete row.

Electrical, acoustic and temperature configurations
Center frequency | Minimum impedance | Capacitance | Peak voltage | Half-power angle at -3 dB | Operating temperature
215 kHz ±5% | 100 Ω ±20% | 5,000 pF ±20% at 1 kHz | Below 1,500 Vpp | 8.7° ±10% | -40 to +80 °C
300 kHz ±5% | 30 Ω ±20% | 7,500 pF ±20% at 1 kHz | Below 1,100 Vpp | 4.5° ±10% | -10 to +60 °C
500 kHz ±5% | 150 Ω ±20% | 3,000 pF ±20% at 1 kHz | Below 600 Vpp | 7.5° ±10% | -40 to +80 °C
650 kHz ±5% | 75 Ω ±20% | 1,900 pF ±20% at 1 kHz | Below 450 Vpp | 6.8° ±10% | -40 to +80 °C

Reference-range configurations
Center frequency | Reference range
300 kHz ±5% | 0.4 to 50 m
500 kHz ±5% | 0.3 to 30 m
650 kHz ±5% | 0.3 to 25 m

Housing materials
Center frequency | Housing material
215 kHz ±5% | Stainless steel + PI
500 kHz ±5% | POM + PI

Applications

• Wastewater settling tanks
• Sludge thickeners
• Sludge-water interface monitoring
• Underwater distance measurement

Caractéristiques / spécifications techniques

• Series name: BBUA-M
• Center frequency options: 215 kHz, 300 kHz, 500 kHz, 650 kHz (±5%)
• Pressure rating: up to 10 kgf (1 MPa)
• Ingress protection: IP68
• Impedance (by frequency): 215 kHz = 100 Ω ±20%, 300 kHz = 30 Ω ±20%, 500 kHz = 150 Ω ±20%, 650 kHz = 75 Ω ±20%
• Capacitance (at 1 kHz): 215 kHz = 5,000 pF ±20%, 300 kHz = 7,500 pF ±20%, 500 kHz = 3,000 pF ±20%, 650 kHz = 1,900 pF ±20%
• Peak voltage (Vpp) limits: 215 kHz < 1,500 Vpp, 300 kHz < 1,100 Vpp, 500 kHz < 600 Vpp, 650 kHz < 450 Vpp
• Beam half-power angle (-3 dB): 215 kHz = 8.7° ±10%, 300 kHz = 4.5° ±10%, 500 kHz = 7.5° ±10%, 650 kHz = 6.8° ±10%
• Operating temperature ranges: 215/500/650 kHz = -40 to +80 °C; 300 kHz = -10 to +60 °C
• Reference measurement ranges: 300 kHz = 0.4–50 m; 500 kHz = 0.3–30 m; 650 kHz = 0.3–25 m
• Housing materials (by frequency): 215 kHz = Stainless steel + PI; 500 kHz = POM + PI
• Note: Electrical, acoustic and temperature parameters differ by frequency and must be selected as one complete configuration row.