Description
Honeywell 946-A4V-2D-2C0-380E
Technical Specifications
- Sensing Principle: Ultrasonic echo time-of-flight
- Sensing Range: 60 mm to 3800 mm
- Output Type: Two independent PNP digital outputs + analog voltage output
- Supply Voltage: 12 VDC to 24 VDC
- Current Consumption: 65 mA maximum
- Ultrasonic Frequency: 200 kHz
- Working Temperature: -20°C to +60°C
- Storage Temperature: -40°C to +85°C
- Protection Rating: IP67
- Housing Material: 316 stainless steel housing
- Connection: 2m fixed cable with M12 connector
- Certification: CE, UL, RoHS
Functional Features Teach-in button on sensor body to set near and far detection threshold. Two independent digital setpoints can be configured as normally open or normally closed. Analog output signal changes linearly with target distance. It has temperature compensation circuit to eliminate sound speed deviation caused by ambient temperature change. It suppresses false trigger from dust, mist and small debris. It has built-in echo quality diagnosis. It supports window mode and single point detection mode.
Application Scenarios Material level detection for silo and hopper Conveyor belt object presence detection Automated packaging machine position detection Warehouse AGV obstacle detection Water tank level non-contact measurement Industrial automation equipment spare replacement
Performance Parameters
- Repeatability: ±0.5% of full range
- Resolution: 1 mm
- Response Time: 30ms maximum
- Hysteresis: adjustable via teach-in
- Insulation Resistance: greater than 100 MΩ
- EMC Immunity: meets IEC 61326 standard
Material Composition 316 stainless steel cylindrical housing PVDF ultrasonic transducer membrane Epoxy sealed internal circuit board Silicone rubber O-ring seal PVC shielded cable M12 nickel plated brass connector Polycarbonate teach button and indicator window
Structural Features Cylindrical compact stainless steel housing. Front ultrasonic transducer face. Side teach-in button and two status LED indicators. Rear integrated cable and M12 connector. Internal epoxy potting for full waterproof protection. O-ring seal between transducer and housing.
Working Principle The transducer emits ultrasonic sound wave at fixed frequency. The sound wave reflects back after hitting target object. The sensor internal circuit calculates flight time of echo and converts time value into distance value. Temperature compensation circuit adjusts sound speed parameter according to ambient temperature. The circuit compares measured distance with configured threshold, then drives digital output and analog output signal accordingly.
Installation Requirements Mount the sensor with clear unobstructed sound beam path. Keep the sensor perpendicular to target surface. Avoid mounting near reflective metal wall and air nozzle. Wire the sensor to 12-24VDC power supply. Press teach button to calibrate near and far detection points. Keep cable away from high frequency inverter cable.
Usage Notes Soft target such as foam and textile will reduce detection range. Strong air flow and compressed air jet will cause unstable reading. Do not scratch the transducer membrane surface. Do not use solvent to clean transducer. The sensor cannot detect small object outside the sound beam angle.
