Thermo Fisher Scientific C101 Colorimeter - Manual (Page 8)

Introduction
C401/301/201/101/102/103/104/105 Colorimeter
4
1.3 Keys and Functions
The keypad has four keys: ON/OFF, MODE, ZERO and READ/ENTER.
Keys Functions
ON/OFF - Powers on and shuts off the meter. With the auto switch-off feature
the meter automatically shuts off 10 minutes after last key press.
MODE - Selects the test to be performed.
- Selects the calibration point in an incremental circular manner during
calibration.
ZERO - Blanks the instrument (sets the meter to zero) before chemical
reagent is added.
- Initiates the calibration mode when used with the ON/OFF key.
- Aborts the calibration process without saving.
- Exits the calibration mode.
READ /
ENTER
- Initiates the measurement of the sample after the chemical reagent
has been added.
- Confirms the test selection.
READ
ENTER
ZERO
MODE
OFF
ON
WATERPROOF
Figure 3: C401/301/201/101/102/103/104/105 Keypad