Hach SIGMA 900 - Default Chapter; Table of Contents

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8837TOC.fm Table of Contents
Table of Contents
Safety Precautions.................................................................................................................................................... 6
Specifications............................................................................................................................................................ 9
Section 1 Introduction .......................................................................................................................................11
1.1 Instrument Description .......................................................................................................................................11
1.2 Principle Operation ............................................................................................................................................11
1.2.1 Accurate, Repeatable Sample Volumes ...................................................................................................11
1.2.2 Intake Tube Pre-Rinse............................................................................................................................. 12
1.2.3 Sample Retry........................................................................................................................................... 12
Section 2 Installation......................................................................................................................................... 15
2.1 Selecting the Installation Site............................................................................................................................ 15
2.2 Installing the All Weather Refrigerated Sampler ............................................................................................... 15
2.3 Installing the Pump Tube in the Sensor Body................................................................................................... 16
2.3.1 Attaching the Intake Line ......................................................................................................................... 17
2.4 Setting Up the Intake Line and Strainer ............................................................................................................ 19
2.5 Bottles and Retainers........................................................................................................................................ 19
2.6 Power Connections........................................................................................................................................... 19
2.7 Flow Proportional Operation ............................................................................................................................. 20
2.7.1 Contact Closure Input.............................................................................................................................. 20
2.7.2 Pulse Input............................................................................................................................................... 20
2.7.3 4–20 mA Input ......................................................................................................................................... 20
2.7.4 Auxiliary Receptacle................................................................................................................................ 21
Section 3 Connecting to External Devices .................................................................................................. 23
3.1 Using the 12 V dc Connection .......................................................................................................................... 23
3.2 Using the Auxiliary Connection ......................................................................................................................... 23
3.2.1 Splitter Interface....................................................................................................................................... 24
Section 4 Maintenance ..................................................................................................................................... 27
4.1 Cleaning the Sampler ....................................................................................................................................... 27
4.1.1 Cleaning the Refrigerator ........................................................................................................................ 27
4.1.2 Cleaning the Sampler Cabinet................................................................................................................. 27
4.1.3 Cleaning the Sample Bottles ................................................................................................................... 27
4.1.4 Cleaning the Intake Tubing and Pump Tubing......................................................................................... 27
4.1.5 No Lubrication Required.......................................................................................................................... 27
4.2 Pump Tubing Maintenance ............................................................................................................................... 27
4.2.1 Tubing Life Estimates.............................................................................................................................. 28
4.2.2 Replacing Pump Tubing .......................................................................................................................... 29
4.3 Humidity Indicator ............................................................................................................................................. 29
4.4 Desiccant Replacement .................................................................................................................................... 29
4.5 Refrigerated Compartment Thermal Control System Calibration...................................................................... 29
4.6 Fuse Replacement............................................................................................................................................ 30
4.7 Resetting the Circuit Breaker ............................................................................................................................ 31
Section 5 Programming.................................................................................................................................... 35
5.1 Keypad and Key Functions ............................................................................................................................... 35