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Manuals
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Hach Manuals
Measuring Instruments
920
Instrument manual
Hach 920 Instrument Manual
Sigma flow meter
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Contents
Table of Contents
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Table of Contents
Table of Contents
Safety Precautions
Specifications
Operation
Section 1 Getting Started
Items Required for Installing and Using the Flow Meter
Optional Accessories for Use with the Flow Meter
Planning for Success: Considerations for Installing Your Flow Meter
Choosing the Proper Site
Dealing with Difficult Sites
Using the Proper Batteries
Mounting the Flow Meter with the Proper Orientation
Preventing Damage to the Flow Meter in a Harsh Environment
Choosing the Appropriate Meter and Sensor Combination
Types of Sensors
Section 2 Software and Communications
Required Software
Programming and Analysis Options
RS232 Serial Port (All Models)
Modem Communications (Models 920 and 930 Only)
Sampler Receptacle (Models 920 and 930 Only)
Sampler Receptacle Pin Descriptions
Logging Sample Information on Models 920 and 930 from a Hach Sampler
Installation and Maintenance
Section 3 Channel Installation Options
Section 4 Meter Installation
Battery Information
Installing Batteries
Replacing Batteries in Models 910 and 920
Replacing Batteries in Model 930
Battery-Life Estimates
Mounting the Flow Meter
Connecting Sensors to the Flow Meter
Ultrasonic Level Sensor
Level/Velocity Sensor
Rain Gauge
Section 5 Maintenance
Sensor Calibration
Velocity Sensor Calibration
Submerged Sensor Calibration
Desiccant Maintenance
Reusing Desiccant
Replacing the Sensor Desiccant
Replacing the Battery and Electronics Compartment Desiccant
Maintaining the O-Ring Gasket on the End Cap
Cleaning the Flow Meter
Storing the Flow Meter
Maintenance in the Electronics Compartment
Fuses
Memory Batteries
Section 6 Exploded View Drawings
General Information
Replacement Parts and Accessories
Contact Information for U.S.A. and Outside Europe
Contact Information for Europe
Warranty
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Catalog Number 4975
Sigma Flow Meter Models
910, 920, and 930
INSTRUMENT MANUAL
05/03 7ed
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