Table of Contents

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Applications of the use of pressure transducers to
  ground-water resource investigations
  4.1 Ground-water monitoring
  4.2 Long-term monitoring
  4.3 Short-term monitoring
  4.4 Reducing well-bore storage
5 Planning considerations for sensor systems
  5.1 General
  5.2 Study duration and system reliability
  5.3 Required accuracy
  5.4 Installation location and site accessibility
  5.5 System components and compatibility
  5.6 Water quality
  5.7 Number of wells
  5.8 Well location, diameter and depth
  5.9 Data-collection frequency
  5.10 Data transfer
  5.11 Cost
6 Assembly, calibration and testing
  6.1 General
  6.2 Familiarization with transducer performance
  6.3 Linear transducer calibration
  6.4 Sources of error in linear calibrations
  6.5 Temperature-corrected transducer calibration
7 Installation
  7.1 General
  7.2 Care and handling
  7.3 Shelter
  7.4 Power requirementd
  7.5 Hanging transducers in wells
  7.6 Measuring system drift
  7.7 Desiccation systems
  7.8 Transducer field calibration
  7.9 Optimizing measurement-system performance
8 Data collection
  8.1 General
  8.2 Frequency of visits
  8.3 Field checks
  8.4 Data recording and retrieval
  8.5 Verification
  8.6 Use with data loggers
  8.7 Field documentation
  8.8 Maintenance
9 Data processing
  9.1 General
  9.2 Adjustments
  9.3 Documentation
Annex A (informative) - Pressure transducers - Characterization,
                        common problems and solutions
  A.1 Pressure transducer characterization
       A.1.1 General
       A.1.2 Types of pressure measurements
       A.1.3 Common pressure units used in hydrology
       A.1.4 Basic types of transducers for measuring pressure
       A.1.5 Understanding pressure-transducer specifications
  A.2 Common problems and solutions
       A.2.1 General
       A.2.2 Leakage
       A.2.3 Open and short circuits
       A.2.4 Grounding problems
       A.2.5 Diaphragm failure
       A.2.6 Power-supply failure
       A.2.7 Data logger channel failure
       A.2.8 Voltage surges
       A.2.9 Faulty shielding
       A.2.10 Over-range problems
Bibliography

Abstract

Gives information about the functional requirements of instrumentation for measuring the water level in a well using automated pressure transducer methods.

General Product Information

Published
Document Type	Standard
Status	Current
Publisher	International Organization for Standardization
Pages
ISBN
Committee	TC 113