SR50AT-316SS-L Stainless-Steel Sonic Ranging Sensor for Marine Environments with Temperature Sensor
Corrosion-resistant Chassis and Transducer
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Overview

The SR50AT-316SS is a stainless-steel version of Campbell Scientific's acoustic sensor for measuring the distance from the sensor to a target. The stainless-steel chassis allows for operation in environments where corrosion is a concern (that is, marine). It is typically used to measure snow or water depth, but is well-suited for other uses, as well.

The SR50AT-316SS includes an external temperature sensor and outputs a temperature-corrected distance reading, eliminating the need for further post-processing.  This sensor is compatible with most Campbell Scientific dataloggers.

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Benefits and Features

  • Integrated temperature probe for providing temperature correction of measurements
  • Non-contact method for determining snow or water depth
  • Wide operating temperature range
  • Designed for marine or corrosive environments
  • User-selectable options for output
  • Uses a multiple echo processing algorithm to help ensure measurement reliability
  • Compatible with most Campbell Scientific dataloggers

Images

SR50AT-316SS-L with cable
SR50AT-316SS-L with cable
SR50AT-316SS-L with cable
Open-faced Parylene-coated transducer head used with the SR50AT-316SS-L.<br />Notice that no mesh grill is used in front of the transducer head.
An SR50AT-316SS-L mounted to a 19517 SR50A Mounting Kit (sold separately)
SR50AT-L mounted to a 19517 SR50A Mounting Kit and crossarm (sold separately).<br />MetSpec RAD06 multi-plate shield is shown being used to house the temperature sensor (sold separately). <br />The SR50AT and SR50AT-316SS have the same chassis design.
SR50AT-L mounted to a<br />19484 SR50A Mounting Stem<br />(sold separately). The SR50AT and<br />SR50AT-316SS have the same chassis design.
SR50AT-L mounted to a crossarm using 19484 SR50A Mounting Stem and 17953 1 x 1 inch Nu-Rail crossover<br />fitting (sold separately). MetSpec RAD06 multi-plate shield is shown being used to house the temperature<br />sensor (sold separately). The SR50AT and SR50AT-316SS have the same chassis design.

Detailed Description

The SR50AT-316SS 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 SR50AT-316SS. Campbell Scientific’s MD485 interface can be used to connect one or more SR50AT-316SS 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 SR50ATH-L is available with a heater option for locations where rime ice is a problem.

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

Specifications

Measurement Time < 1.0 s
Output Options SDI-12 version 1.3, RS-232, RS-485 (output options selected by configuring internal jumpers)
Baud Rates 1200 to 38400 bps (RS-232, RS-485 modes)
Power Requirements 9 to 18 Vdc (typically powered by datalogger’s 12 Vdc power supply)
Measurement Range 0.5 to 10 m (1.6 to 32.8 ft)
Beam Acceptance ~30°
Resolution 0.25 mm (0.01 in.)
Accuracy ±1 cm (0.4 in.) or 0.4% of distance to target (whichever is greatest). Requires external temperature compensation.
Operating Temperature Range -45° to +50°C
Compliance CE Compliant
Temperature Accuracy
  • ±0.2°C (at 0° to +50°C)
  • ±0.75°C (at -45° to 0°C)
Diameter 7.5 cm (3 in.)
Length 10.1 cm (4.0 in.)
Weight 795 g (28 oz) without cable
Cable Weight 250 g (8.2 oz) for a 4.57-m (15-ft) cable

Power Consumption

Active 250 mA (typical)
Quiescent SDI-12 Mode < 1.0 mA
Quiescent RS-232/RS-485 Modes
  • < 1.25 mA (≤ 9600 bps)
  • < 2.0 mA (> 9600 bps)

Maximum Cable Length

-NOTE- Cable lengths greater than 60 m require a heavier gage wire if the power supply drops below 11 Vdc.
SDI-12 60 m (200 ft)
RS-232 60 m (200 ft) Baud rates ≤ 9600 bps
RS-485 300 m (984 ft)

Compatibility

Datalogger Considerations

One single-ended channel per probe is required; an excitation channel can be shared by several probes.

Compatible Contemporary Dataloggers (SDI-12)

CR200(X) Series CR800/CR850 CR1000 CR3000 CR9000X CR300 Series CR6

Compatible Retired Dataloggers (SDI-12)

CR500 CR510 CR10 CR10X 21X CR23X CR9000 CR5000 CR7X

Compatible Contemporary Dataloggers (RS-232)

CR200(X) Series CR800/CR850 CR1000 CR3000 CR9000X CR300 Series CR6

Compatible Retired Dataloggers (RS-232)

CR500 CR510 CR10 CR10X 21X CR23X CR9000 CR5000 CR7X

Compatible Contemporary Dataloggers (RS-485)

CR200(X) Series CR800/CR850 CR1000 CR3000 CR9000X CR300 Series CR6
* * * * *

Compatible Retired Dataloggers (RS-485)

CR500 CR510 CR10 CR10X 21X CR23X CR9000 CR5000 CR7X
*

*Requires an MD485 interface or similar RS-485 to RS-232 interface.


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