Cảm biến đo mức siêu âm + nhiệt độ Campbell Scientific SR50AT-L

Thương hiệu: Campbell Scientific | Tình trạng: Còn hàng
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SR50AT-L Sonic Ranging Sensor with Temperature Sensor

Gọi 0904251826 để được trợ giúp

Cảm biến đo mức siêu âm + nhiệt độ Campbell Scientific SR50AT-L

Overview

The SR50AT-L is a sonic ranging sensor with an integrated external temperature probe. Sonic ranging sensors determine distance by emitting an ultrasonic pulse and then measuring the elapsed time between the emission and return of the pulse. The temperature probe allows the SR50AT series to output temperature-corrected values (speed of sound varies with temperature).

Note: Campbell Scientific recommends model SR50AT-316SS-L for marine environments.

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

  • Rugged enough for harsh environments

  • User-selectable options for output

  • Uses a multiple echo processing algorithm to help ensure measurement reliability

  • Compatible with most Campbell Scientific dataloggers

  • Optional heater available (3W @ 12VDC or 12VAC)

Detailed Description

The SR50AT is an identical unit to the SR50A with the addition of an external temperature sensor. The temperature sensor comes with a standard ten-foot lead and requires a 6-plate Gill radiation shield. The SR50AT will output a temperature-corrected distance reading, eliminating the need for further post-processing, as well as a separate temperature reading.

The SR50AT was designed to meet the stringent requirements of measuring snow depths and uses a multiple echo processing algorithm to help ensure measurement reliability. The SR50AT is compatible with all current Campbell Scientific dataloggers, as well as many other data acquisition systems. An air temperature measurement is required to correct for variations of the speed of sound in air. Either the SR50AT or an existing on-site air temperature sensor can be used. The SR50AT is available with a heater option for locations where rime ice is a problem.

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 (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: 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

  • Length: 10.1 cm (4.0 in.)

  • Diameter: 7.5 cm (3 in.)

Temperature Measurement

  • 0° to +50°C: ±0.2°C

  • -45° to 0°C: ±0.75°C

Power Consumption 

  • Active (typical): 250 mA

  • 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

  • SDI-12: 60 m (200 ft)

  • RS-232: 60 m (200 ft); baud rates ≤ 9600 bps

  • RS-485: 300 m (984 ft); cable lengths greater than 60 m require a heavier gage wire if the power supply drops below 11 Vdc

Weight

  • SR50ATH (no cable): 375 g (13.2 oz)

  • Cable (15 ft): 250 g (8.2 oz)

Download

Brochures

SR50AT, SR50AT-316SS, and SR50ATH Sonic Ranging Sensors

Manuals

SR50AT, SR50AT-316SS, and SR50ATH Sonic Ranging Sensors

SR50AT, SR50AT-316SS, and SR50ATH Sonic Ranging Sensors – Example Programs (small ZIP file)

Compliance

SR50A and SR50AT EU Declaration of Conformity

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