Xylem H-3521 User Manual

D E S I G N A N A L Y S I S A S S O C I A T E S , I N C . 75 West 100 South, Logan, Utah 84321 Phone: (435) 753-

1-2 Introduction H-35211.1 UnpackingThe following is a list of items you should have received:! WATERLOG® H-3521 pressure transducer! Main interface c

Chapter 2InstallationH-3521Installation 2-1Figure 4 Sensor and Cable2.1 Installing the WATERLOG® H-3521The WATERLOG® H-3521 is a digital pressure tra

2-2 Installation H-35212.3 General Installation RecommendationsThe H-3521 pressure transducer is not recommended for use in applications where silt an

H-3521Installation 2-3Figure 5 Pressure & Vent Ports2.5 Making Connections to the Pressure PortThe H-3521 has a 1/8" female NPT pressure port

2-4 Installation H-3521Figure 6 Connector & Terminal Strip2.6 Connecting Your Data LoggerThe H-3521 has RS-232, SDI-12 and Modbus “smart” digital

H-3521Installation 2-52.6.1 SDI-12 InterfaceThe user must connect pins 5,6, and 7 to the data recorder or the user can power the H-3521separate of th

2-6 Installation H-35212.7 Wiring and Installation Precautions! The H-3521 requires that the water be at ground potential. Mother Nature takes care o

H-3521Installation 2-7settings can also be changed using the simple RS232 menu, see Chapter 4.MeanCount is the number of raw pressure measurements ave

2-8 Installation H-3521Example of a H-3521 Fluid Extended "Set Current Stage" command:Command Response Time Values Description"aXSCS2.

H-3521Installation 2-92.11 TestingBefore installing the H-3521 in your field location, you may wish to first test the sensor and datalogger in your s

Chapter 3MaintenanceH-3521 Maintenance 3-13.1 MaintenanceSustained operation of the H-3521 pressure sensor is almost maintenance-free. As with anypr

Chapter 4Simple Menu Interface H-3521 Simple RS-232 Menu Interface 4-14.0 Simple Menu Interface The H-3521 has a RS-232 interface which is conveni

4-2 Simple RS-232 Menu Interface H-35214.2 General OperationsThe H-3521 settings can be made either via the Simp

H-3521 Simple RS-232 Menu Interface 4-34.3 Menu Options4.3.1 P - Sensor Mode OptionsIn this sub-menu you can view the current H-3521 power mode

4-4 Simple RS-232 Menu Interface H-3521screen will refresh and show the new offset. You must make a new measure

H-3521 Simple RS-232 Menu Interface 4-54.4 Sensor Mode Options MenuThis setup menu is for viewing and editing the H-3521 power modes and other mo

4-6 Simple RS-232 Menu Interface H-3521not average as many measurements. When in this mode the Meancount/Average

H-3521 Simple RS-232 Menu Interface 4-74.5 Sensor Output Options MenuThis setup menu is for viewing and editing the current settings of the 4-20

User Agreement/WATERLOG® WarrantyH-3521 User Agreement/WATERLOG® Warranty W-11. NATURE OF THE PRODUCTThis agreement accompanies a pressure measurin

4-8 Simple RS-232 Menu Interface H-3521Enter the desired Stage which corresponds to a 4.00mA output and press ENT

Chapter 5SDI-12 Command and Response Protocol H-3521 SDI-12 Command and Response Protocol 5-15.0 SDI-12 Command and Response ProtocolThis is a br

5-2 SDI-12 Command and Response Protocol H-35215.1 Measure CommandThe Measure Command causes a new measurement sequence to be execute

H-3521 SDI-12 Command and Response Protocol 5-3Example of a H-3521 "aM1!" command: Command Response Time Values Description"aM1!&

5-4 SDI-12 Command and Response Protocol H-35215.2 Concurrent Measurement CommandThis is a new command since the release of Version 1

H-3521 SDI-12 Command and Response Protocol 5-55.3 Send Data CommandThe Send Data command returns sensor data generated as the result of previou

5-6 SDI-12 Command and Response Protocol H-35215.4 Continuous MeasurementsThis is a new command for the Version 1.2 SDI-12 Specificat

H-3521 SDI-12 Command and Response Protocol 5-75.6 Initiate Verify CommandThe Verify Command causes a verify sequence to be performed. The resu

5-8 SDI-12 Command and Response Protocol H-35215.7 Send Identification CommandThe Send Identification Command responds with sensor ve

H-3521 SDI-12 Command and Response Protocol 5-95.8 Change Sensor Address CommandThe Change Sensor Address Command allows the sensor address to b

W-2 User Agreement/WATERLOG® Warranty H-3521If the product fails to satisfy the above warranty, USER must notify DESIGN ANALYSIS inwriting within the

5-10 SDI-12 Command and Response Protocol H-35215.9 Extended Set Current Stage CommandThe H-3521 processes the pressure sensor input

H-3521 SDI-12 Command and Response Protocol 5-115.10 Extended Read/Write Offset and Read/Write SlopeThe H-3521 processes the pressure sensor inp

5-12 SDI-12 Command and Response Protocol H-35215.11 Extended Read/Write Stage DigitsThis is for reading or writing the stage digits

H-3521 SDI-12 Command and Response Protocol 5-135.12 Extended Read/Write 4-20mA_Hi and Read/Write 4-20mA_LoThe H-3521 scales the current Stage d

5-14 SDI-12 Command and Response Protocol H-35215.13 Extended Read Power_Mode and Write Power_ModeThe quadrature, 0-5V, and 4-20mA ou

H-3521 SDI-12 Command and Response Protocol 5-155.14 Extended Read Measure Rate and Write Measure RateWhen the H-3521 is put in power mode 3 it

5-16 SDI-12 Command and Response Protocol H-35215.15 Extended Read Mean_Count and Write Mean_CountThe H-3521 makes multiple raw senso

H-3521 SDI-12 Command and Response Protocol 5-17Example of a H-3521 Extended "Read Mean_Count" command:Command Response Time Values Des

5-18 SDI-12 Command and Response Protocol H-35215.16 Extended Read/Write NOAA Mode EnableThe H-3521 can be put into a NOAA Mode. In N

H-3521 SDI-12 Command and Response Protocol 5-195.17 Extended “XTEST”This command is used for installation or production testing and requires th

Table of ContentsH-3521Table of Contents T-1User Agreement/WATERLOG® Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Appendix ASpecificationsH-3521 Specifications A-1Accuracy(Maximum percent of error in measurement)Pressure: Less than or equal to 0.03% of full scale

Appendix BModbus ProtocolH-3531Modbus Protocol B-1B.1 Modbus InterfaceModbus is an industry standard field bus for interconnecting Programmable Logic

B-2 Modbus Protocol H-3531B.4 Holding RegistersThere are 25 holding registers in the H-3531 FlashLite™, some are Read/Write registers and someare Rea

H-3531Modbus Protocol B-3B.4.2 Stage Units Select(R/W)This holding register allows the user to change the units of the stage that is reported in thei

B-4 Modbus Protocol H-3531B.4.8 Set Current Stage(WO)This holding register allows the user to set the current stage by writing the current stagevalue

H-3531Modbus Protocol B-5The input registers of the H-3531 FlashLite™ hold the measurement data. When the user sends aread command to read an input r

T-2 Table of Contents H-35214.3.6 O - Offset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

H-3521Table of Contents T-3B.4 Holding Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Chapter 1IntroductionH-3521Introduction 1-11.0 IntroductionThe WATERLOG® H-3521 is a digital pressure transducer specifically designed for water leve