®
U-GAGE Q45U Long-Range Ultrasonic Sensors
1. Either the near or far limit may be programmed first.
2. There is a 2-minute timeout for programming of the first limit. The sensor returns to Run mode with the previously
programmed limits. There is no timeout between the programming of the first and second limit.
3. Cancel the programming sequence at any time by pressing and holding the Limits button for ≥ 2 seconds. The sensor
returns to Run mode with the previously programmed limits.
4. During limit programming, the 5-segment moving dot indicator displays the relative target position between 0 m and 4.0 m
(0 ft and 13.1 ft). The maximum recommended far limit position is 3.0 m (9.84 ft).
5. If the target is positioned between 3.0 and 4.0 m (9.84 ft to 13.1 ft), the 5th segment of the moving dot indicator flashes to
indicate that a valid echo is received, but the target is beyond the recommended 3.0 m (9.84 ft) maximum far limit.
6. If a limit is rejected during either programming step, the sensor reverts to the first limit programming step. This is indicated
by the green LED (OFF), red LED (flashing to indicate signal strength), and the amber LED (ON).
7. If both limits are accepted, the sensor returns to Run mode, which is indicated by the green LED (ON).
8. If the target is held at the same position for programming of both limits, the sensor establishes a 50 mm wide sensing
window, centered on the target position.
Specifications
Supply Voltage and Current
Performance Specifications
12 to 24 V dc (10% maximum ripple) at 100 mA, exclusive of load
Repeatability: 0.1% of measured distance ( 0.50 mm min)
Minimum Window Width: 25 mm (1.0 in)
Hysteresis: 10 mm (0.4 in)
Proximity Mode Range
Near limit: 250 mm (9.8 in) minimum
Far limit: 3.0 m (118 in)
Indicators
Note: The far limit may be extended as far as 3.9 m (12.79 ft) for good
Three status LEDs:
acoustical targets (hard surfaces with an area > 100 cm2)
Green ON = power to sensor is ON
Green flashing = output is overloaded
Amber ON = outputs are conducting (in Run mode); or programming
status (in Setup mode)
Supply Protection Circuitry
Protected against reverse polarity and transient voltages
Output Configuration
Red flashing = indicates relative strength of received echo
Bipolar: one current sourcing (PNP) and one current sinking (NPN) open-
5-segment moving dot LED indicates the position of the target within the
sensing window
collector transistor
Use the 4-position DIP switch to select the following:
Construction
Switch 1: Output normally open/normally closed (pump in/pump out)
Switch 2: High/Low level control mode or on/off presence sensing
mode
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"-14 NPS internal conduit thread
Switch 3 & 4: Response speed selection (digital filter)
Output Rating
Connections
150 mA maximum (each)
Off-state leakage current: < 25 microamp at 24 V dc
On-state saturation voltage: < 1.5 V at 10 mA; < 2.0 V at 150 mA
2 m (6.5 ft) or 9 m (30 ft) attached cable, or 5-pin Mini-style or 5-pin M12/
Euro-style quick disconnect fitting
Environmental Rating
Output Protection Circuitry
Leakproof design is rated IEC IP67; NEMA 6P
Protected against false pulse on power-up and continuous overload or
short-circuit of outputs
Operating Conditions
Temperature: –25 °C to +70 °C (–13 °F to +158 °F)
Maximum relative humidity: 100%
Hysteresis
ON/OFF mode: 10 mm
HIGH/LOW mode: 0 mm
Vibration and Mechanical Shock
All models meet Mil Std. 202F requirements. Method 201A (vibration: 10 Hz
to 60 Hz max., double amplitude 0.06 inch, maximum acceleration 10G).
Also meets IEC 947-5-2 requirements: 30G 11 ms duration, half sine wave.
Method 213B conditions H & I (Shock: 75G with unit operating; 100G for
non-operation).
Certifications
Application Notes
Minimum target size: 50 mm × 50 mm aluminum plate at 3.0 m (118 in)
Enable/Disable: Connect the yellow wire to +5 to 24 V dc to enable the
sensor and 0 to +2 V dc to disable the sensor. When the sensor is disabled,
the last output state is held until the sensor is re-enabled. Hold the wire to
the appropriate voltage for at least 40 ms to enable or disable the sensor.
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