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Summary of Contents for Xylem YSI WaterLOG H-3301
- Page 1 OWNERS MANUAL V2.1 WATERLOG H-3301/3311 INCREMENTAL SHAFT ENCODER WITH SDI-12 AND QUADRATURE OUTPUTS D34 0514...
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Page 2: Table Of Contents
CONTENTS & WARRANTY This user manual is a guide for the H-3301/3311 shaft encoder. For more information, updated manuals, brochures, technical notes, and supporting software on the H-3301/H-3311 shaft encoder please refer to waterlog.com or contact your sales representative. For additional assistance, please contact us at +1.435.753.2212 or sales@waterlog.com WaterLOG®... -
Page 3: Waterlog® Warranty
Contents & Warranty “WATERLOG™ PRODUCTS MANUFACTURED BY YELLOW SPRINGS INSTRUMENTS CO., INC. are warranted by Yellow Springs Instruments Co., Inc. (“YSI”) to be free from defects in materials and workmanship under normal use and service for twelve (12) months from date of shipment unless otherwise specified in the corresponding YSI pricelist or product manual. -
Page 4: Chapter 1: Introduction
01 / INTRODUCTION... -
Page 5: Operation
Introduction The WaterLOG® H-3301/3311 is a digital shaft encoder which measures water depth by monitoring the position of a float and pulley. The H-3311 has the same functionality as the H-3301 with the addition of a built-in display and manual offset adjustment feature making it easier to setup and use in the field. -
Page 6: Programming The Data Recorder
INTRODUCTION Programming The Data Recorder You must prepare your data recorder to receive and record the H-3301/3311 data. Since data recorders differ widely, refer to your recorder manufacturer’s directions. The H-3301/3311 maintains two values or parameters about the shaft position: the Stage in the selected engineering units and the Absolute Shaft Position in single unit steps. -
Page 7: Installation
Introduction position count with a software flag or “signature”. If the power is removed momentarily the H-3301/3311 will resume operation using the current position count. If the power is lost long enough to destroy the signature, when the power is restored the H-3301/3311 resets the position count to 0000. -
Page 8: Words Of Caution
INTRODUCTION Words of Caution Make certain the encoder’s output does not go negative or more than +5.0 Volts • Make certain the ground and power pins are connected to the encoder • Keep the lead wires as short as possible •... -
Page 9: Chapter 2: H-3311 Lcd Display
02 / H-3311 LCD DISPLAY... -
Page 10: Overview
H-3311 LCD DISPLAY Overview The H-3311 has the same functionality as the H-3301 with the addition of a built in display and manual offset adjustment. The LCD display shows the last measured value. The display uses ultra low power and is always visible. The offset adjustment is a rotary digital encoder and is accessed by removing the attached dust cover. -
Page 11: Chapter 3: Sdi-12 Command And Response Protocol
03 / SDI-12 COMMAND & RESPONSE PROTOCOL... - Page 12 SDI-12 COMMAND & RESPONSE PROTOCOL This is a brief description of the Serial Digital Interface (SDI-12) Command and Response protocol used by the WATERLOG® Series Model H-3301/3311 sensor. Included is a description of the commands and data format supported by the H-3301/3311. Refer to the document “A SERIAL DIGITAL INTERFACE STANDARD FOR HYDROLOGIC AND ENVIRONMENTAL SENSORS”.
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Page 13: Standard Sdi-12 Commands
SDI-12 Command & Response Protocol Standard SDI-12 Commands Command Description Make Measurement aMC! Make Measurement with CRC Make Concurrent Measurement aCC! Make Concurrent Measurement with CRC aD0! Send Data aR0! Make Continuous Measurement aRC0! Make Continuous Measurement with CRC Verify Sensor aAn! Change Sensor Address Send Identification... -
Page 14: Measure Command With Crc
SDI-12 COMMAND & RESPONSE PROTOCOL is a three digit integer (000-999) specifying the maximum time, in seconds, the sensor will take to complete the command and have measurement data available in its buffer. is a single digit integer (0-9) specifying the number of values that will be placed in the data buffer. -
Page 15: Concurrent Measurement Command
SDI-12 Command & Response Protocol Example of an ‘aM!’ Command: Command Response Time Values Description ‘aMC!’ “a0012<cr><lf>” 1 sec Return encoder position Subsequent Command Response “aD0” a+X.XX+NNNN<cr><lf> Where: X.XX = Current position (stage), in user programmable units NNNN = Current position, in raw position counts = CRC (ASCII Characters) Concurrent Measurement Command A “Concurrent Measurement”... -
Page 16: Send Data Command
SDI-12 COMMAND & RESPONSE PROTOCOL Where: is the sensor address (“0-9”, “A-Z”, “a-z”, “*”, “?”). is an upper-case ASCII character is a three digit integer (000-999) specifying the maximum time, in seconds, the sensor will take to complete the command and have measurement data available in its buffer. is a two digit integer (00-99) specifying the number of values that will be placed in the data buffer. -
Page 17: Continuous Measurements
SDI-12 Command & Response Protocol Continuous Measurements Sensors that are able to continuously monitor the phenomena to be measured, such as a cable position, do not require a “Start Measurement” command. They can be read directly with the R commands (R0!...R9!). The R commands work exactly like the D (D0!...D9!) commands. The only difference is that the R commands do not need to be preceded with an M command. -
Page 18: Initiate Verify Command
SDI-12 COMMAND & RESPONSE PROTOCOL Initiate Verify Command The “Verify” command causes a verify sequence to be performed. The result of this command is similar to the “aM!” command except that the values generated are fixed test data and the results of diagnostic checksum tests. -
Page 19: Change Sensor Address
SDI-12 Command & Response Protocol Command Response “aI!” “allccccccccmmmmmmvvvxx...xx<cr><lf>” Where: is the sensor address (“0-9”, “A-Z”, “a-z”, “*”, “?”). is an upper-case ASCII character. is the SDI-12 version compatibility level, e.g. version 1.3 is represented as “13”. cccccccc is an 8 character vendor identification to be specified by the vendor and usually in the form of a company name or its abbreviation. -
Page 20: Zero The Position Command
SDI-12 COMMAND & RESPONSE PROTOCOL is an upper-case ASCII character. is the new sensor address to be programmed (“0-9”, “A-Z”, “a-z”, “*”, “?”). NOTE: To verify the new address use the “Identify Command.” Example of a “Change Sensor Address” command: Command Response Description... -
Page 21: Read User Offset And Read User Slope Commands
SDI-12 Command & Response Protocol Read User Offset and Read User Slope Commands The H-3301/3311 processes the raw shaft encoder position with a mX+b equation. The slope (m) and offset (b) terms are programmable, allowing the user to scale the position into other engineering units. -
Page 22: Write User Offset And Write User Slope Commands
SDI-12 COMMAND & RESPONSE PROTOCOL Write User Offset and Write User Slope Commands The H-3301/3311 processes the raw shaft encoder position with a mX+b equation. The slope (m) and offset (b) terms are programmable, allowing the user to scale the encoder position into other engineering units. -
Page 23: Appendix A Specifications
SDI-12 Command & Response Protocol Appendix A Specifications General Environmental Input: Shaft Position Operating Temperature: -40 to 60 °C Outputs: SDI-12 & 2-Wire Storage Temperature: -50 to 70 °C Quadrature Humidity: 0 to 100% Resolution (SDI): 200 counts/rev Mechanical Resolution (Quadrature): 100 counts/rev Bearing: Double bearing with... - Page 24 150 countries, we have strong, long-standing relationships with customers who know us for our powerful combination of leading product brands and applications expertise, backed by a legacy of innovation. For more information on how Xylem can help you, go to www.xyleminc.com YSI Incorporated 1700/1725 Brannum Lane...
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