Hach POCKET COLORIMETER II Instruction Manual

2—20
User-Entered Calibration, continued
14. Press the READ/ENTER key. The meter will measure and display the
absorbance value for S1.
15. The calibration is complete with two points. If additional standards are
required, press
ZERO/SCROLL until “Add” appears on the display. Repeat
steps 11–14 to enter additional standards.
16. Press the
MENU key twice to exit and accept the changes. The instrument
will use this calibration to determine the displayed concentration of future
sample measurements.
Entering a Predetermined Calibration Curve
Note: Entering a predetermined calibration curve requires at least two data pairs.
Each data pair requires a concentration value and the absorbance value for
the given concentration. Up to 10 data pairs may be entered. This procedure
uses the Edit mode.
1. Turn on the instrument and select the range to be calibrated. An arrow at
the top of the display will point to the selected range. To change ranges,
press the
MENU key, then use the READ/ENTER key to toggle between
ranges 1 and 2. Press
MENU again to return to measurement mode.
5957088.book Page 20 Friday, March 22, 2013 3:54 PM

Hach POCKET COLORIMETER II Specifications

General

Measurement Method	Colorimetric
Display	LCD
Operating Temperature	0 to 50 °C
Storage Temperature	-40 to 60 °C
Waterproof Rating	IP67
Weight	0.23 kg
Light Source	LED
Range	Varies by parameter
Wavelength	Varies by parameter
Battery Life	Approximately 2000 tests