Xylem H-312-22 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-

2-2 Installation H-3122.2 Water DepthThe following chart shows the maximum depth to which the H-312 is factory calibrated. Thesensor can survive temp

H-312 Installation 2-3protect the sensor cable so it remains at the temperature of the surrounding air and is not heateddirectly by the sun.2.4 Still

2-4 Installation H-312Figure 6 Dry Air Junction Box2.5 Dry Air Junction BoxBecause the surface of the water being measured is exposed to atmospheric

H-312 Installation 2-5Figure 7 Dry Air Junction Box WiringData Logger ConnectionsWire NameRedWhiteBlackShield+12Volt DCSDI-12 DataGroundGroundIf the

2-6 Installation H-3122.7 Wiring and Installation Precautions The shield in the hook-up cable must be connected to the data logger ground. The data

H-312 Installation 2-72.9 Programming the SDI-12 AddressIf more than one sensor is to be connected to the SDI-12 bus, make certain each sensor has a

2-8 Installation H-3122.12 TestingBefore installing the H-312 in your field location, you may wish to first test the sensor and datalogger in your sho

Chapter 3MaintenanceH-312 Maintenance 3-1Figure 8 Dry Air Junction Box3.1 MaintenanceSustained operation of the H-312 pressure sensor is almost mai

3-2 Maintenance H-312Figure 9 Cleaning the Port Screen3.4 Cleaning the Port ScreenThe H-312 has a port screen to help prevent dirt, sediment and insec

H-312 Maintenance 3-3CAUTION: Do not use sticks and the like to push sediment out of the ports. This maycause a hydraulic effect and over pressure

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-

3-4 Maintenance H-312

Chapter 4SDI-12 Command and Response ProtocolH-312 SDI-12 Command and Response Protocol 4-14.0 SDI-12 Command and Response ProtocolThis is a brief

4-2 SDI-12 Command and Response ProtocolH-3124.1 Measure CommandThe Measure Command causes a measurement sequence to be performed. Data values ge

H-312 SDI-12 Command and Response Protocol 4-34.2 Concurrent Measurement CommandThis is a new command for the Version 1.2 SDI-12 Specification. A

4-4 SDI-12 Command and Response ProtocolH-3124.3 Send Data CommandThe Send Data command returns sensor data generated as the result of previous &q

H-312 SDI-12 Command and Response Protocol 4-54.4 Continuous MeasurementsThis is a new command for the Version 1.2 SDI-12 Specification. Sensors t

4-6 SDI-12 Command and Response ProtocolH-3124.6 Initiate Verify CommandThe Verify Command causes a verify sequence to be performed. The result o

H-312 SDI-12 Command and Response Protocol 4-74.7 Send Identification CommandThe Send Identification Command responds with sensor vendor, model, a

4-8 SDI-12 Command and Response ProtocolH-3124.8 Change Sensor Address CommandThe Change Sensor Address Command allows the sensor address to be ch

H-312 SDI-12 Command and Response Protocol 4-94.9 Extended Set_Current_Stage CommandThe H-312 processes the pressure sensor input and computes Pre

User Agreement/WATERLOG® WarrantyH-312User Agreement/WATERLOG® Warranty W-11. NATURE OF THE PRODUCTThis agreement accompanies a pressure measuring s

4-10 SDI-12 Command and Response ProtocolH-3124.10 Extended Read/Write Stage_Offset and Read/Write Stage_SlopeThe H-312 processes the pressure sens

H-312 SDI-12 Command and Response Protocol 4-114.11 Extended Read Mean_Count and Write Mean_CountThe H-312 makes multiple raw sensor measurements,

4-12 SDI-12 Command and Response ProtocolH-312Example of a H-312 Extended "Read Mean_Count" command:CommandResponse Time Values Descripti

H-312 SDI-12 Command and Response Protocol 4-134.12 Extended “XTEST”This command is used for installation or production testing and requires the u

4-14 SDI-12 Command and Response ProtocolH-312

Appendix AH-312 SpecificationsH-312 Specifications A-1Accuracy(Maximum percent of error in measurement)Pressure: Less than or equal to 0.05% of full

4-2 SDI-12 Command and Response ProtocolH-312

Appendix AH-312-22 SpecificationsH-312-22Specifications B-1Accuracy(Maximum percent of error in measurement)Pressure: Less than or equal to 0.02% of f

4-2 SDI-12 Command and Response ProtocolH-312

W-2 User Agreement/WATERLOG® Warranty H-312writing within the applicable period specified above and reasonably cooperate with the directionsthey rece

Chapter 1IntroductionH-312Introduction 1-11.0 IntroductionThe WATERLOG® H-312 is a submersible pressure transducer specifically designed for waterlev

1-2 Introduction H-312Figure 3 H-312 Pressure Sensor Components1.1 UnpackingThe following is a list of items you should have received: WATERLOG® H

H-312Introduction 1-31.2 Check The Sensor CableBe sure that the vented cable is long enough to reach from the submerged location selected to thejunct

1-4 Introduction H-312

Chapter 2InstallationH-312 Installation 2-1Figure 4 H-312 System Components2.1 Installing the WATERLOG® H-312The H-312 submersible pressure sensor