Measurement and Control Products for WEATHER Measurement and Control Products for WATER Measurement and Control Products for ENERGY Measurement and Control Products for MACHINES Measurement and Control Products for STRUCTURES Measurement and Control Products for EARTH
Overview
 
Specifications
 
Compatibility
 
Ordering
 
Support
 
Image Gallery

Technical Description

The SR50A was designed to meet the stringent requirements of measuring depths and uses a multiple echo processing algorithm to help ensure measurement reliability.

SDI-12, RS-232, and RS-485 output options are available for measuring the SR50A. Campbell Scientific’s MD485 interface can be used to connect one or more SR50A sensors in RS-485 mode to an RS-232 device. This can be useful for sensors that require lead lengths that exceed the limits of either RS-232 or SDI-12 communications.

The SR50A replaced the SR50 in March 2007. The newer SR50A is smaller and has different output options than its predecessor.

SR50A-L Specifications

  • Measurement Time: < 1.0 second
  • Output Options: SDI-12 version 1.3, RS-232, RS-485 (output options selected by configuring internal jumpers)
  • Buad Rates (RS-232, RS-485 modes): 1200 to 38400 bps
  • Power Requirements: 9 to 18 Vdc (typically powered by datalogger’s 12 Vdc power supply)
  • Measurement Range: 1.6 to 32.8 ft (0.5 to 10 m)
  • Beam Acceptance: ~30°
  • Resolution: 0.01 in (0.25 mm)
  • Accuracy: ±0.4 inch (1 cm) or 0.4% of distance to target (whichever is greatest); requires external temperature compensation
  • Operating Temperature: -45° to +50°C
  • CE Compliant
  • Length: 10.1 cm (4.0")
  • Diameter: 7.5 cm (3")
  • Weight: 1.0 kg (2.2 lb)

Power Consumption

  • Active (typical): 250 mA
  • Quiescent SDI-12 Mode:
    < 1.0 mA
  • Quiescent RS-232/RS485 Modes:
    < 1.25 mA (≤9600 bps)
    < 2.0 mA (>9600 bps)

Resources and Links

Ships With

(1) SR50ACBL-L Cable with user-specified length