Ultrasonic Level Transmitter

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AUL730 Series

Datasheet

The AUL730 Series is a fixed-mounted ultrasonic level transmitter designed for non-invasive level measurement. Featuring microprocessor-based technology, it ensures accurate and reliable readings without interrupting the process. With fast and straightforward installation, it offers a loop-powered 4-20 mA output with HART communication, simplifying setup and integration. The AUL730 provides cost-effective installation and commissioning, delivering non-contact level measurement with exceptional performance. Equipped with an exclusive sensor for level applications, it boasts a quick response time of less than one second, making it ideal for various industrial processes.

Technical Specifications

Measuring Principle	Ultrasonic Level Measurement
Measuring Range	0-3 m, 0-5 m, 0-10 m, 0-15 m, 0-20 m 0-10 ft, 0-16 ft, 0-33 ft, 0-50 ft, 0-65 ft
Display	4 Line LCD with Bargraph (illumination)
Resolution	1 mm / 0.003 ft
Accuracy	+/-0.25% of Full Scale
Repeatability	+/-0.1% of reading
Material	Ultrasonic Tube: ABS Sensor Head: Polyurethane (Standard) / ETFE / PTFE Housing: ABS or Aluminum Alloy (Weather Proof), Aluminum Alloy (Explosion Proof)
Update Time	<3 s
Ambient Temperature	-20~60 °C
Relative Humidity	0-100% RH
Sensor Frequency	80 kHz / 40 kHz / 30 kHz
Blanking Distance	0.35-1.0 m
Beam Angle	6°
Keypad	4 Key with tactile action
Response Time	Less than 1 second
Protection Class	IP65 (ABS) / IP67 (Aluminum Alloy) Explosion Proof, Ex d (ia) IIB T4
Installation	G 2" and 20 m sensor is M70 * 2 Standard Flange end (Optional)
EMI / RFI Effect	Follow SAMA PMC 33.1 from 20-1000 MHz and for field strengths up to 30 V/m
Process Temperature	-40~60 °C (Standard) -40~100 °C (Optional)
Process Pressure	-0.8~2.0 bar G
Max. Cable Length	50 Meter (Remote Version)
Power Supply	12-36 VDC (2-Wire) (Compact) Start-up current 25 mA (Standard) Start-up current 40 mA (With HART) 12-36 VDC / 85-260 VAC, 4-Wire (Remote)
Power Consumption	Less than 3W
Current Output	4-20 mA (2-Wire, 4-Wire) Load: Rohm= (VDC-12) * 50 Ω
Alarm Output	High/Low/High-High/Low-Low (Remote)
Communication	RS485 MODBUS, 4-Wire only (Standard) HART Signal (Optional)
Temp. Compensation	Built-in to compensate over temperature range
Data Storage	Operation parameters are stored by EEPROM for more than 10 years
Dimensions	Compact (ABS): 105 mm (W) * 262 mm (H) * 168 mm (D) Compact (Aluminum): 161 mm (W) * 247 mm (H) * 132 mm (D) Remote (ABS): 183.5 mm (W) * 218 mm (H) * 125.5 mm (D) Weight: 1.0 kg / 2.2 kg (Compact), 2.2 kg (Remote)