Q45U Long-Range Ultrasonic Sensors with Bipolar Discrete Outputs
Application Notes
Proximity Mode Range Near limit: 250 mm (9.8") min
Far limit: 3.0 m (118")
Note: The far limit may be extended as far as 3.9 m for good acoustical targets (hard surfaces with
area > 100 cm2)
Supply Protection Circuitry Protected against reverse polarity and transient voltages
Output Configuration Bipolar: one current sourcing (PNP) and one current sinking (NPN) open-collector transistor;
The following may be selected by a 4-position DIP switch located on top of the sensor, beneath a
transparent o-ring sealed acrylic cover (see page 2):
Switch 1: Output normally open/normally closed (pump in/pump out)
Switch 2: High/Low level control mode or on/off presence sensing mode
Switch 3 & 4: Response speed selection (digital filter)
Output Rating 150 mA maximum (each)
Off-state leakage current: < 25 microamp at 24V dc
On-state saturation voltage: < 1.5V at 10mA; < 2.0V at 150 mA
Output Protection Circuitry Protected against false pulse on power-up and continuous overload or short-circuit of outputs
Supply Voltage and Current 12 to 24V dc (10% maximum ripple) at 100 mA, exclusive of load
Indicators Three status LEDs:
Green ON steady = power to sensor is ON
Green flashing = output is overloaded
Yellow ON steady = outputs are conducting (RUN mode)
programming status (SETUP mode)
Red flashing = indicates relative strength of received echo
5-segment moving dot LED indicates the position of the target within the sensing window
Hysteresis ON/OFF mode: 10 mm
HIGH/LOW mode: 0 mm
Performance Specifications Repeatability: ±0.1% of measured distance (±0.50 mm min)
Minimum Window Width: 25 mm (1.0")
Hysteresis: 10 mm (0.4")
Construction Molded PBT thermoplastic polyester housing, o-ring sealed transparent acrylic top cover, and stainless
steel hardware. Q45U sensors are designed to withstand 1200 psi washdown. The base of cabled models
has a 1/2"-14NPS internal conduit thread
Environmental Rating Leakproof design is rated IEC IP67; NEMA 6P
Connections 2 m (6.5') or 9 m (30') attached cable, or 5-pin Mini-style or 5-pin Euro-style quick disconnect fitting
Operating Conditions Temperature: -25° to +70°C (-13° to +158°F)
Maximum relative humidity: 100%
Vibration and
Mechanical Shock
All models meet Mil. Std. 202F requirements. Method 201A (Vibration: 10 to 60Hz max., double amplitude
0.06", maximum acceleration 10G). Method 213B conditions H & I (Shock: 75G with unit operating; 100G
for non-operation) Also meets IEC 947-5-2 requirements: 30G, 11 ms duration, half sine wave.
Minimum target size: 50 mm x 50 mm aluminum plate at 3.0 m (118")
Enable/Disable: Connect yellow wire to +5 to 24V dc to enable sensor and 0 to +2V dc to disable
sensor. When the sensor is disabled, the last output state is held until the
sensor is re-enabled. The wire must be held to the appropriate voltage for at
least 40 ms for the sensor to enable or disable.
Q45U Series Long-Range Sensor Specifications