Campbell-scientific SR50-L CSC Ultrasonic Distance Sensor Manual de usuario Pagina 1

SR50 Sonic Ranging SensorRevision: 1/07Copyright © 1995-2007Campbell Scientific, Inc.

SR50 Sonic Ranging Sensor 4 DISTANCE =READINGTKELVIN273.15SR50° FORMULA 1. Temperature Compensation The SR50 calculates a distance reading using the

SR50 Sonic Ranging Sensor 5 3.1.1 SDI-12 Wiring FIGURE 1. SDI-12 Wiring The order in which the connections are made is critical. Always connect Gr

SR50 Sonic Ranging Sensor 6 values that are arranged in order from closest to the furthest. If no targets were detected, the SR50 outputs three zeroe

SR50 Sonic Ranging Sensor 7 Probe is used and that the SR50 SDI-12/DATA Bus is wired to control port 1 (see Figure 2). This program is similar to th

SR50 Sonic Ranging Sensor 8 6: Z=X*Y (P36) 1: 2 X Loc [[ DEPTH ] 2: 5 Y Loc [ MULT ] 3: 2 Z Loc [[ DEPTH ] 7: Z=X+F (P

SR50 Sonic Ranging Sensor 9 TABLE 1. SR50 SDI-12 Command List CR10X and SDI-12 FUNCTION DATA OUTPUT CR23X P105 COMMANDS Parameter 2 When using

SR50 Sonic Ranging Sensor 10 3.3 Pulse Train Output This option is most commonly used with 21X or CR10s without SDI-12. The SR50 sensor can also out

SR50 Sonic Ranging Sensor 11 3.3.1 Pulse Training Wiring FIGURE 3. Pulse Train Wiring The order in which the connections are made is critical. Alw

SR50 Sonic Ranging Sensor 12 3.4 Two 21X Program Examples for Pulse Train Output 1 2 3 A4 5 6 B7 8 9 C*0 # DI.D. DATA21X MICROLOGGERHL1HL2HL3HL4HL5H

SR50 Sonic Ranging Sensor 13 The following instructions set the sensor enable line high long enough for the SR50 to detect it, then set it low. 1: Se

Warranty and Assistance The SR50 SONIC RANGING SENSOR is warranted by CAMPBELL SCIENTIFIC, INC. to be free from defects in materials and workmanship u

SR50 Sonic Ranging Sensor 14 8: Z=SQRT(X) (P39) 1: 24 X Loc [ ATempComp ] 2: 24 Z Loc [ ATempComp ] 9: Z=X*Y (P36) 1: 21 X Loc [

SR50 Sonic Ranging Sensor 15 3.4.2 Pulse Train Programming Example 2 Example 2 will measure every execution interval. This program will measure the S

SR50 Sonic Ranging Sensor 16 If Flag 2 is high, compute the air temperature compensation factor and correct the distance-to-surface measurement for ai

SR50 Sonic Ranging Sensor 17 Parameter 2 of P92 determines how often to measure. 12: If time is (P92) 1: 0 Minutes into a 2: 15 Minute Interval

SR50 Sonic Ranging Sensor 18 -Input Locations- 10 SnowDepth 21 Dis2Surf 22 T_Kelvin 23 273_15 24 ATempComp 25 Temporary 3.5 ASCII Output The S

SR50 Sonic Ranging Sensor 19 TABLE 2. Address Jumper Settings for Pulse Train and ASCII Outputs ADDRESS OUTPUT FORMAT 0 Pulse Train 1000 Hz 2.5mm

SR50 Sonic Ranging Sensor 20 HEIGHTRADIUS22 Deg. FIGURE 5. SR50 Cone Angle The SR50’s mounting stem (1.25” outside diameter) enables various installa

SR50 Sonic Ranging Sensor 21 2.3 Meter 1-1/4 Inch Pipe L1049 Clamp 120 FIGURE 6b. SR50 Tower Mount The SR50 should be mounted perpendicula

SR50 Sonic Ranging Sensor 22 Unobstructed Path 22 Deg. 22 Deg. Perpendicular to Surface 22 Deg.22 Deg. FIGURE 7. SR50 Mounting Considerations 5. Da

SR50 Sonic Ranging Sensor 23 If multiple targets are requested, the distance values will be reported from closest target to furthest. When using mult

i SR50 Sonic Ranging Sensor Table of Contents PDF viewers note: These page numbers refer to the printed version of this document. Use the Adobe Acro

SR50 Sonic Ranging Sensor 24 7. Assembly/Disassembly Procedures It is important to follow these instructions to disassemble the SR50. Disassembly is

SR50 Sonic Ranging Sensor 25 1. If the sensor is in operation, always disconnect the SR50 from the datalogger before disassembling. 2. To remove t

SR50 Sonic Ranging Sensor 26 CAPD10.0022 F1N5388A1N5388A1KD3D4100pFF1G2G37-35pfB6TRANSFORMERD8F61.5K10KB61.0mH0.01 F 5%D10D12D130.1 F33

A-1 Appendix A. Making Concurrent Measurements with the SR50 Concurrent Measurement ability allows the datalogging system to initiate measurements in

Appendix A. Making Concurrent Measurements with the SR50 A-2 Place measurement in Loc X. If measurement is > -1000 then use measurement Else Add 1

Appendix A. Modifying the Non-Volatile Memory A-3 4: If (X<=>F) (P89) 1: 3 X Loc [ Raw_Dist ] 2: 3 >= 3: -1000 F 4: 30 Then

Appendix A. Making Concurrent Measurements with the SR50 A-4 14: End (P95) 15: End (P95) ; Apply air temperature correction to the reading...

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SR50 Sonic Ranging Sensor Table of Contents ii Tables 1. SR50 SDI-12 Command List ...

CAUTIONARY NOTES 1. The order in which the connections are made is critical. Always connect Ground first, followed by +12V and then the remaining S

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1 SR50 Sonic Ranging Sensor 1. SR50 Specifications Power Requirements: 9-16 VOLTS D.C. Power Consumption: 2 mA (Quiescent) 250 mA (Measureme

SR50 Sonic Ranging Sensor 2 Measurement Range: 0.5 to 10 meters Accuracy: ±1 cm or 0.4% of distance to target (whichever is greater) requires

SR50 Sonic Ranging Sensor 3 3. Operation The SR50 has several output formats: SDI-12, Pulse Train, and serial ASCII output. A group of four jumpers