Campbell-scientific SR50A Distance Sensor Manual de usuario

SR50A Sonic Ranging SensorRevision: 1/11Copyright © 2007-2011Campbell Scientific, Inc.

SR50A Sonic Ranging Sensor 3.3 SDI-12 Operation SDI-12 is a Serial Digital Interface standard that is used for communication between data recorders a

SR50A Sonic Ranging Sensor The different commands are entered as options in the SDI-12 recorder instruction. The major difference between the various

SR50A Sonic Ranging Sensor SDI-12 Command Command Function/Description Values Returned ?! Address Query a aAb! Change Address command b is the ne

SR50A Sonic Ranging Sensor 3.5 RS-485 Operation The SR50A sensor comes from the factory with the internal jumpers set to SDI-12 mode. To use the SR5

SR50A Sonic Ranging Sensor FIGURE 1. SR50A to MD485 Wiring 3.6 RS-232 and RS-485 Settings Once the jumpers are set for RS-232 operation a terminal

SR50A Sonic Ranging Sensor The Initial menu will look as follows: The following is a summary of settings that can be changed on the SR50A RS-232 or

SR50A Sonic Ranging Sensor Setting Description Options Default Value Quality Output On Off Off Temperature Output On Off Off Output valid only for

SR50A Sonic Ranging Sensor 3.6.3.2 Auto Measure Auto Output Mode In this mode the SR50A will automatically exit its low power mode, initiate a measur

SR50A Sonic Ranging Sensor 3.6.6 Measurement Interval Units This setting is only applicable if either the Auto Measure Polled Output or the Auto Meas

SR50A Sonic Ranging Sensor 3.7 Serial Commands 3.7.1 Setup Command The setup command places the SR50A in the serial setup mode. This command should

Warranty and Assistance The SR50A SONIC RANGING SENSOR is warranted by Campbell Scientific, Inc. to be free from defects in materials and workmanship

SR50A Sonic Ranging Sensor 3.8 RS-232/RS-485 Data Output Format 3.8.1 Measurement Output The measurement output string for the SR50A is as follows:

SR50A Sonic Ranging Sensor VXVVV If X is a 1, then no watchdog errors have occurred. VVXXX The 3 digits XXX are for factory use and should always read

SR50A Sonic Ranging Sensor BBBBB This is the checksum of the boot code. WWWWW This is the checksum of the firmware. CC This is a 2 character checksum

SR50A Sonic Ranging Sensor FIGURE 2. Beam Angle Clearance 4.2 Mounting Height Any target to the SR50A should be at least 19.7 in (50 cm) or more f

SR50A Sonic Ranging Sensor 4.3 Mounting Options There are two standard mounting options available for the SR50A sensor. The first is the SR50A Mounti

SR50A Sonic Ranging Sensor FIGURE 6. SR50A - Mounted using a NU-RAIL Fitting and 19484 Mounting Stem SR50A with 6-plate gill radiation shield – the

SR50A Sonic Ranging Sensor It is recommended that the transducer housing assembly (part number 19486 – Transducer Maintenance Kit) be replaced every 3

SR50A Sonic Ranging Sensor FIGURE 8. Remove 6 Screws from the Transducer Housing FIGURE 9. Remove Transducer Housing and Disconnect Wires 21

SR50A Sonic Ranging Sensor FIGURE 10. Location of Desiccant in Transducer Housing Assembly FIGURE 11. Remove and Replace Desiccant 22

SR50A Sonic Ranging Sensor FIGURE 12. Remove the 2 Flat Philips Screws to Expose the PCB Carefully reassemble in reverse order. 7. Jumper Settings

SR50A Table of Contents PDF viewers note: These page numbers refer to the printed version of this document. Use the Adobe Acrobat® bookmarks tab for

SR50A Sonic Ranging Sensor The SR50A can be configured with either SDI-12, RS-232 or RS-485 communications. Shunt jumpers can be located on any of th

SR50A Sonic Ranging Sensor • Power can now be applied to the SR50A by connecting the connector and applying power to the sensor. The Green LED shoul

SR50A Sonic Ranging Sensor 10. Datalogger Program Examples In the following datalogger program examples only the CR1000 and the CR10X dataloggers are

SR50A Sonic Ranging Sensor 10.1.2 CR1000 Example (RS-232 Mode) 'CR1000 Series Datalogger 'In this example, the SR50A is mounted 2.5 meters

SR50A Sonic Ranging Sensor 'Measure the 107 temperature sensor: Therm107 (Air_Temp,1,1,Vx1,0,250,1.0,0) 'Use Air_Temp to calcula

SR50A Sonic Ranging Sensor 5: Z=SQRT(X) (P39) 1: 6 X Loc [ Mult1 ] 2: 6 Z Loc [ Mult1 ] ;Distance to the Snow Surface is obtain

SR50A Sonic Ranging Sensor 10.2 SR50AT Examples 10.2.1 CR1000 Example (SDI-12 “M4!”) 'CR1000 Series Datalogger 'The following sample progr

SR50A Sonic Ranging Sensor 'Main Program BeginProg Scan (60,Sec,0,0) PanelTemp (PTemp,250) Battery (Batt_volt) 'Once installed

SR50A Sonic Ranging Sensor 10.2.2 CR1000 Example (RS-232 Mode) 'CR1000 Series Datalogger 'In this example, the SR50AT is mounted 2.5 meter

SR50A Sonic Ranging Sensor 'Subtract the corrected distance from the initial distance of the SR50A to the ground: Snow_Depth=Initial_Distan

SR50A Table of Contents ii 4. Sensor Mounting and Installation ...16 4.1 Beam Angle ...

SR50A Sonic Ranging Sensor 34 6: Real Time (P77)^30811 1: 1220 Year,Day,Hour/Minute (midnight = 2400) 7: Sample (P70)^20443 1: 1 Reps 2:

Campbell Scientific Companies Campbell Scientific, Inc. (CSI) 815 West 1800 North Logan, Utah 84321 UNITED STATES www.campbellsci.com • info@campbel

Warning! Always disconnect the sensor before opening. This Device complies with Part 15 of the FCC Rules. Operation is subject to the following two c

SR50A Sonic Ranging Sensor 1. Specifications Power Requirements: 9 to 18 Vdc Power Consumption: Quiescent SDI-12 Mode < 1.0 mA RS-232/RS485

SR50A Sonic Ranging Sensor 2. Introduction The SR50A Sonic Ranging Sensor measures the distance from the sensor to a target. The most common applica

SR50A Sonic Ranging Sensor 3.1 Quality Numbers Measurement quality numbers are also available with output data; these give an indication of the measu