Hach DR 900 User Manual page 11

Select advanced program options
Every program has various additional advanced options from which to
select.
1. Push Options to access Options>Advanced Options.
2. Use the advanced options to specify more parameters.
Option Description
Auto Save Toggle between On and Off. Every reading is automatically
saved when the option is set to On. The reading can be
saved manually when the option is set to Off.
Chemical Select the alternate chemical form and the associated
Form measuring range on some factory-installed methods.
Reagent The Reagent Blank correction can be used with some of the
Blank factory-installed methods. Enter the result of a completed
test using deionized water as the sample. The blank value is
subtracted from every result to correct for any background
color due to reagents. Enter the blank correction before the
Standard Adjust option is used. Complete this correction for
each new lot of test reagents.
Standard Change stored calibration. Complete a test on a known
Adjust standard at a concentration near the top of the test range.
Use this function to adjust the result to align the standard
concentration.
Sort Program Select an alphabetical or numerical program order for the
stored program list.
Use an operator ID
The operator ID tag associates readings with an individual operator. All
stored data will include this ID.
1. Push SETTINGS>Operator ID in the reading screen.
2. Select, create or delete an operator ID:
Option Description
Current ID Select an ID from a list. The current ID will be associated
with the sample data until a different ID is selected.
Option Description
Create New ID Enter a name for a new operator ID. A maximum of
10 names can be entered.
Delete ID Erase an existing operator ID.
Use a sample ID
The sample ID tag is used to associate readings with a particular sample
or with a location. If assigned, stored data will include this ID.
1. Push SETTINGS>Sample ID in the reading screen.
2. Select, create or delete an operator ID:
Option Description
Current ID Select an ID from a list. The current ID will be associated
with the sample data until a different ID is selected.
Create New ID Enter a name for a new sample ID. A maximum of
10 names can be entered. The samples are numbered in
sequence for each measurement until a different ID is
selected (e.g., Pond 1, Pond 2).
Delete ID Erase an existing sample ID.
How to do a measurement
Basic measurement steps are necessary to complete a measurement.
Every method has a step-by-step procedure. Refer to the applicable
method to run a specific test. The example that follows is a basic
procedure to complete a measurement.
1. Select the applicable program from the programs menu (e.g., Stored
Programs, User Programs, Favorites).
2. Install the cell adapter, if necessary.
3. Push Start to start the program.
4. Prepare the blank according to the method document. Close the
sample cell and clean the optical faces of the sample cell with a lint-
free cloth.
English 11