TABLE OF CONTENTS
GENERAL INFORMATION
Packaging and Delivery ..........................3
General Precautions ...........................3
Safety Precautions ............................3
Limits of Liability .............................3
Specifications ...............................4
Parts & Accessories ............................5
EPA Compliance .............................5
Warranty .................................5
CE Compliance..............................6
INTRODUCTION
What is Turbidity? ............................7
How is Turbidity Measured?.......................8-9
GENERAL OPERATING INFORMATION
Overview...............................10-11
The Keypad ...............................12
The Display ...............................12
Turbidity Tubes ...........................13-14
CALIBRATION
Standard Solutions ...........................15
Calibration Procedure ..........................16
ANALYSIS PROCEDURES WITH THE 2020
Selecting the EPA Mode.........................17
Turbidity Measurement .........................18
Preparation of Turbidity-Free Water................. 19-20
Dilution Procedures ...........................21
Testing Tips ...............................21
TROUBLESHOOTING GUIDE .................22
RS232 PORT..........................23
MAINTENANCE OF THE 2020
Replacing the Battery ..........................24
Replacing the Lamp ...........................24
Repairs to the 2020 ...........................24
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