Campbell-scientific OBS500 Smart Turbidity Meter with ClearSensor Tech Manuel d'utilisateur Page 1

OPERATOR’S MANUAL OBS500 Smart Turbidity Meter with ClearSensor™ Technology Revision: 5/14 Copyright © 2008- 2014 Campbell

Table of Contents iv

OBS500 Smart Turbidity Meter with ClearSensor™ Technology 1. Introduction The OBS500 submersible turbidity meter is designed for general pressure me

OBS500 Smart Turbidity Meter with ClearSensor™ Technology • The probe must be calibrated with sediments from the waters to be monitored. The procedu

OBS500 Smart Turbidity Meter with ClearSensor™ Technology • The most important general precaution is to orient the unit so that the OBS sensor looks

OBS500 Smart Turbidity Meter with ClearSensor™ Technology FIGURE 4-2. Apply tape to protect sensor FIGURE 4-3. Secure with hose clamps. Do not ov

OBS500 Smart Turbidity Meter with ClearSensor™ Technology FIGURE 4-4. Place and secure mounting fixture 5

OBS500 Smart Turbidity Meter with ClearSensor™ Technology 4.2 Datalogger Programming and Wiring Short Cut is an easy way to program your datalogger t

OBS500 Smart Turbidity Meter with ClearSensor™ Technology 4. Select Datalogger Model and Scan Interval (default of 5 seconds is OK for most applicati

OBS500 Smart Turbidity Meter with ClearSensor™ Technology 6. After selecting the sensor, click at the left of the screen on Wiring Diagram to see how

OBS500 Smart Turbidity Meter with ClearSensor™ Technology • Insensitivity to bubbles and organic matter • Ambient-light rejection • Low temperatur

OBS500 Smart Turbidity Meter with ClearSensor™ Technology Historically, most turbidity sensor manufacturers and sensor users labeled the units NTUs, f

OBS500 Smart Turbidity Meter with ClearSensor™ Technology The OBS500 has three communication modes: SDI-12, RS-232, or 0 to 5 V. The mode defaults to

OBS500 Smart Turbidity Meter with ClearSensor™ Technology 6. Specifications Features: • Dual backscatter and sidescatter sensors used to measure tur

OBS500 Smart Turbidity Meter with ClearSensor™ Technology Diameter: 4.76 cm (1.875 in) Length: 27 cm (10.625 in) Weight: 0.52 kg (1.15 lb) Maximum

OBS500 Smart Turbidity Meter with ClearSensor™ Technology FIGURE 7-1. Device Configuration Utility After installing the Device Configuration Utility

OBS500 Smart Turbidity Meter with ClearSensor™ Technology FIGURE 7-2. Terminal Mode using 1 and H commands TABLE 7-2. RS-232 Terminal Commands Term

OBS500 Smart Turbidity Meter with ClearSensor™ Technology Device Configuration allows you to change the configuration of the OBS500. Select the Setti

OBS500 Smart Turbidity Meter with ClearSensor™ Technology TABLE 7-3. OBS500 Connector Pin-Out MCIL-8-MP/MCBH-8-FS Contact Number Electrical Functio

OBS500 Smart Turbidity Meter with ClearSensor™ Technology 7.3.2 RS-232 Wiring Our CR800, CR850, CR1000, and CR3000 dataloggers have COM ports (contro

OBS500 Smart Turbidity Meter with ClearSensor™ Technology 7.4 Communication Modes 7.4.1 SDI-12 The OBS500 uses an SDI-12-compatible hardware interfa

Limited Warranty “Products manufactured by CSI are warranted by CSI to be free from defects in materials and workmanship under normal use and service

OBS500 Smart Turbidity Meter with ClearSensor™ Technology TABLE 7-7. SDI-12 and RS-232 Measurement Commands Commands Process Values Returned aM7! a

OBS500 Smart Turbidity Meter with ClearSensor™ Technology The address may also be changed by connecting to the probe in the Device Configuration Utili

OBS500 Smart Turbidity Meter with ClearSensor™ Technology For CR10X and CR510 standard mixed-array dataloggers, the datalogger telecommunications comm

OBS500 Smart Turbidity Meter with ClearSensor™ Technology universal response curve. However, there is residual nonlinearity that is removed by calibr

OBS500 Smart Turbidity Meter with ClearSensor™ Technology TABLE 7-9. Calibration Materials and Volumes Side Scatter 90-Degree Materials Calibration

OBS500 Smart Turbidity Meter with ClearSensor™ Technology TABLE 7-10. Change in TU value resulting from one hour of evaporation of SDVB standard, i.e

OBS500 Smart Turbidity Meter with ClearSensor™ Technology 6. Repeat steps 2, 3, 4, and 5 for the other standards. 7. Perform 2nd-order polynomial r

OBS500 Smart Turbidity Meter with ClearSensor™ Technology 7.5.2.2 Wet-Sediment Calibration Wet-sediment calibration is performed with sediment obtain

OBS500 Smart Turbidity Meter with ClearSensor™ Technology FIGURE 7-8. Portable Sediment Suspender (left) and OBS beam orientation in suspender

OBS500 Smart Turbidity Meter with ClearSensor™ Technology 10. Perform 3rd order polynomial regressions on the data to get the coefficients for conver

Assistance Products may not be returned without prior authorization. The following contact information is for US and international customers residing

OBS500 Smart Turbidity Meter with ClearSensor™ Technology Note that Edlog only allocates one input location for Instruction 105. Two input locations

OBS500 Smart Turbidity Meter with ClearSensor™ Technology the current usage. Therefore, increased current usage indicates that the wiper needs to be

OBS500 Smart Turbidity Meter with ClearSensor™ Technology FIGURE 7-10. Insert screwdriver and rotate clockwise FIGURE 7-11. Shutter disassembled

OBS500 Smart Turbidity Meter with ClearSensor™ Technology 8. Factors that Affect Turbidity and Suspended-Sediment Measurements This section summarize

OBS500 Smart Turbidity Meter with ClearSensor™ Technology FIGURE 8-2. The apparent change in turbidity resulting from disaggregation methods 8.2 Su

OBS500 Smart Turbidity Meter with ClearSensor™ Technology 0 20 40 60 80 100 120 140 160 180Scattering Angle0.010.11Relative Scattering IntensityCubesP

OBS500 Smart Turbidity Meter with ClearSensor™ Technology FIGURE 8-4. Response of an OBS sensor to a wide range of SSC 8.5 IR Reflectivity—Sediment

OBS500 Smart Turbidity Meter with ClearSensor™ Technology FIGURE 8-5. Infrared reflectivity of minerals as a function of 10-Munzell Value 8.6 Wate

OBS500 Smart Turbidity Meter with ClearSensor™ Technology more sensitive, by factors of four to six, to mineral particles than particulate organic mat

OBS500 Smart Turbidity Meter with ClearSensor™ Technology FIGURE 9-1. DevConfig, Send OS 10. Troubleshooting A common cause for erroneous, turbidit

Precautions DANGER — MANY HAZARDS ARE ASSOCIATED WITH INSTALLING, USING, MAINTAINING, AND WORKING ON OR AROUND TRIPODS, TOWERS, AND ANY ATTACHMENTS TO

OBS500 Smart Turbidity Meter with ClearSensor™ Technology The following three tests are used to diagnose malfunctions of an OBS500. 1. The Finger-Wa

OBS500 Smart Turbidity Meter with ClearSensor™ Technology 11. References Anderson, C.W., 2005, Turbidity (ver. 2.1): U.S. Geological Survey Technique

OBS500 Smart Turbidity Meter with ClearSensor™ Technology 42

Appendix A. Importing Short Cut Code This tutorial shows: • How to import a Short Cut program into a program editor for additional refinement. • H

Appendix A. Importing Short Cut Code 6. Import wiring information to the program by opening the associated .DEF file. Copy and paste the section be

Appendix B. Example Programs B.1 CR1000 SDI-12 Program Although this is a CR1000 program, other CRBasic dataloggers are programmed similarly. &apos

Appendix B. Example Programs B.2 CR1000 RS-232 Program Although this is a CR1000 program, other CRBasic dataloggers are programmed similarly. '

Appendix B. Example Programs B.3 CR1000 Analog Program Although this is a CR1000 program, other CRBasic dataloggers are programmed similarly. '

Appendix B. Example Programs B.4 Examples for High Sediment Loads B.4.1 Normally Open CR1000 Example 'CR1000 Series Datalogger 'OBS500 no

Appendix B. Example Programs B.4.2 Cycle Shutter/Wiper for Each Measurement CR1000 Program The following CRBasic program will: • Open the shutter

Appendix B. Example Programs B-6

Appendix C. OBS500 Copper Sleeve Kit Installation 1. Remove the Button Head Hex Screw as shown. 2. Slide the Copper Sleeve over the OBS500 and s

Appendix C. OBS500 Copper Sleeve Kit Installation C-2

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

Table of Contents PDF viewers: These page numbers refer to the printed version of this document. Use the PDF reader bookmarks tab for links to spec

Table of Contents 7.6.3 Edlog Programming ...... 29 7.7 Operation in High Sediment Load

Table of Contents 7-3. Settings Editor screen .................. 16 7-4. Terminal Emulator ..