Hach-Lange POCKET Colorimeter II Application Instruction - Manual (Page 21)

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Section 3 System start up
3.1 Instrument keys and display
3.1.1 Key-Functions
ZERO/SCROLL (BLUE key) : In measurement mode, sets the instrument to zero. In
menu mode, scrolls through menu options. Also scrolls numbers when entering or
editing a value.
READ/ENTER (GREEN key) : In measurement mode, initializes sample
measurement. In menu mode, selects a menu option. When entering numbers,
moves one space to the right. Confirm the function when the entry is complete.
3.2 Enter calibration data of LANGE Cuvette Test
3.2.1 Overview
Each POCKET COLORIMETER II has two channels in which measurements can be
made. Each channel will accept user-defined calibration data.
This application instruction contains the calibration data of the LANGE Cuvette Test
for Formaldehyde:
Figure 1 Instrument keys and display
1 POWER/BACKLIGHT 6
Channel indicator (2)
2 ZERO/SCROLL (BLUE key) 7
Menu indicator
3 MENU 8
Calibration adjusted indicator
4
Numeric display
9
Battery low indicator
5
Channel indicator (1)
10 READ/ENTER (GREEN key)