Hach DR 900 User Manual

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Hach DR 900 User Manual Manual pdf 10 page image

Standard operationProgram listThe instrument is delivered with a complete series of applicationprograms. Refer to Table 1 for the program descriptions.Table 1 Program optionsProgram option DescriptionStored programs Stored programs are factory-installed, pre-programmedmethods. Refer to Select a stored program on page 10.User programs Methods can be developed and can be saved as a userprogram.1 Refer to User programs on page 12.Favorites Methods which are often used can be saved in the favoritelist.11 A maximum of ten methods (user programs and/or favorites) can be saved.Select a stored program1. Push HOME>Options>All Programs.2. Select the applicable method and push Start.3. Select Options>Add to Favorites to add the selected method tofavorites for faster access.Select basic program optionsWhen a program is selected, additional parameter options are available.1. Push Options to access the option menu.2. Select the applicable options.Option DescriptionStart Timer Select a pre-set timer or set a manual timer to makesure that the steps of an analysis are correctly timed(e.g., reaction times or wait times can be exactlyspecified). When the timer is on, the timer icon is shownon the display. The instrument makes an audible soundwhen the time is over. Pre-set timer—Select theapplicable pre-set timer for one or more storedprocedure steps and push Start. Timer Manual—Enterthe applicable time with the navigation keys and pushDone. Default = 00:00Favorites/UserProgramsSelect from the stored favorites or user programs list.Refer to Select a favorite or a user programon page 12 for more information.All Programs Select a pre-programmed method from the list.Data Log Show all saved readings. Refer to Data logon page 12 for more information.Add to Favorites Save stored programs and user programs methodswhich are often used in the favorites list. Refer to Add aprogram to favorites on page 12.%T/Abs/Conc Switch to % transmittance, absorbance or concentrationreadings. Transmittance reading (%)—Reads thepercent of the original light that passes through thesample and reaches the detector. Absorbancereadings—The light absorbed by the sample is read inabsorbance units. Concentration readings—Themeasured absorbance values are converted intoconcentration values with the program-specific storedequation.AdvancedOptionsUse the advanced options to specify more parameters.Refer to Select advanced program optionson page 11.Save Save the last reading manually when the auto saveoption is set to Off.10 English

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