Specifications

SR50A Sonic Ranging Sensor
1. Specifications
Power Requirements: 9-18 VOLTS D.C.
Power Consumption: Quiescent
SDI-12 Mode < 1.0mA
RS-232/RS485 Mode < 2.25mA
Note1
Peak Measurement Current
250 mA typical
Measurement Time: Less than 1.0 second
Selectable Outputs: SDI-12 (version 1.3)
RS-232 (1200 to 38400 BAUD)
RS-485 (1200 to 38400 BAUD)
Measurement Range: 0.5 to 10 meters
Accuracy: ±1 cm or 0.4% of distance to target
(whichever is greater)
Accuracy specification excludes errors in
the temperature compensation.
Resolution: 0.25mm
Required Beam Angle Clearance: 30°
Operating Temperature: -45°C to +50°C
Maximum Cable Length: SDI-12 60 meters
RS-232 (9600 BAUD or less) 30 meters
RS-485 300 meters
Note2
Cable Type: 4 conductor, 2-twisted pair, 22 AWG,
Santoprene jacket
Dimensions: Length 10.1 cm
Diameter 7.6 cm
Weight:
Sensor only 0.4kg (0.88 lbs)
Cable (SR50A) 15 feet 0.25kg (0.55lbs)
1: The quiescent current draw is less than 1.25mA if the BAUD
rate is 9600 BAUD or less.
NOTES
2: Power supply must not drop below 11.0 Volts or heavier
gauge wire is required
1