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Advanced Operations

Selecting the Concentration Resolution:

1.

From the Options menu, press

 

CONCENTRATION 

RESOLUTION

.

2.

Select the resolution and press 

OK

.

6.4.2 Performing a Measurement in the Multi-Wavelength Mode

1.

Insert the blank cell into the cell holder. Press 

ZERO

. 

Note: The 

READ

 key does not become active until the zero 

measurement has been performed.

2.

Insert the sample cell into the cell holder. Press 

READ

. 

3.

For data storage, see 

section 5.3.1 on page 28

.

6.5 Time Course Mode

The Time Course Mode is used to collect data in either absorbance 
or transmittance for a user-specified length of time. After the data 
are collected, they can be displayed in either graphic or tabular 
format.

6.5.1 Time Course Setup Parameters

1.

From the Main Menu , press 

TIME COURSE

.

2.

Press 

OPTIONS

 to configure parameters.

Содержание DR 2800

Страница 1: ...Catalog Number DOC022 53 00720 DR 2800 USER MANUAL September 2005 Edition 1 Hach Company 2005 All rights reserved Printed in the U S A te dk...

Страница 2: ...Visit us at www hach com...

Страница 3: ...Diagnostics 19 Section 5 Standard Operations 21 5 1 Getting Started 21 5 1 1 Tips for Using the Touch Screen 21 5 1 2 Using the alphanumeric keypad 21 5 1 3 Main Menu 22 5 2 Instrument Setup Mode 23 5...

Страница 4: ...de at Different Wavelengths 62 6 4 2 Performing a Measurement in the Multi Wavelength Mode 64 6 5 Time Course Mode 64 6 5 1 Time Course Setup Parameters 64 6 5 2 Time Course Scan Reading 66 6 5 3 Anal...

Страница 5: ...t 340 nm with filter KV450 3 0 1 T at 340 nm with NaNO2 Data Storage 500 measured values result date time sample ID user ID User Programs 50 programs Physical and Environmental Specifications Dimensio...

Страница 6: ...Visit us at www hach com...

Страница 7: ...tion that requires special emphasis Note Information that supplements points in the main text 2 1 2 Precautionary Labels Read all labels and tags attached to the instrument Personal injury or damage t...

Страница 8: ...gth 650 nm 2 2 Overview of Product Function The DR 2800 Spectrophotometer is a visible spectrum spectrophotometer with a wavelength range of 340 to 900 nm for laboratory and field analysis The instrum...

Страница 9: ...tation 3 2 Operating Environment The following conditions are necessary to ensure correct instrument operation and accurate results Place the instrument firmly on an even surface Do not push any objec...

Страница 10: ...ent and charging 3 5 Serial Printer and Personal Computer PC Connections The DR 2800 has two USB interfaces as a standard feature located on the back of the instrument Figure 2 The USB Type A interfac...

Страница 11: ...11 Installation Figure 2 Interfaces 1 On Off Switch 4 Cover 2 USB Type B for PC to DR 2800 connection 5 USB Type A for printer USB stick or keyboard 3 External Power Supply Socket...

Страница 12: ...round cells Note Cell Compartment 1 contains a barcode reader for TNTplus vials Cell Compartment 2 1 inch square or 50 mm rectangular cells can be inserted directly into the cell compartment without u...

Страница 13: ...he orientation tab fits the groove in the compartment opening The cell type imprint should be legible on the adapter Figure 5 Note The arrow on top of the adapter indicates the direction of the light...

Страница 14: ...14 Installation Figure 5 Installing a Cell Adapter...

Страница 15: ...or TNTplus vials The DR 2800 is shipped with the Light Shield installed Remove the Light Shield before using Cell Compartment 2 The Light Shield can be stored in the Protective Cover Figure 8 on page...

Страница 16: ...Figure 9 The Protective Cover can also be used in rainy weather to prevent water from entering the cell compartments The enclosure rating of the instrument increases from IP41 to IP42 when the Protect...

Страница 17: ...17 Installation 2 Press the Protective Cover lightly into the correct position until the cell compartment is completely sealed and the cover cannot slip off Figure 9 Protective Cover Installed...

Страница 18: ...Visit us at www hach com...

Страница 19: ...the language selection screen will appear 1 Select the desired language 2 Press OK to confirm the language selection The self check will start automatically Note Once the language is selected the ins...

Страница 20: ...is recommended to perform a system check 1 Remove the cell from the cell compartment if present Close the lid and press START The system check is carried out duration approximately 6 minutes Note For...

Страница 21: ...keypad This display is used to enter letters numbers and symbols as needed when programming the instrument Unavailable options are disabled grayed out The icons on the right and left of the screen are...

Страница 22: ...in absorbance units Transmittance measurements The percentage of the light that passes through the sample and reaches the detector is measured Concentration measurements A concentration factor can be...

Страница 23: ...rator ID 3 Use the alphanumeric keypad to enter a new Operator ID Note Spaces cannot be used in this function Use underscore symbols instead on the key YZ_ 4 Press OK to confirm 5 The display shows th...

Страница 24: ...s sequentially e g Inflow 01 etc select Add Number Use the arrow keys to specify the first number of the sequence Use the key between the arrow keys to enter the first number of the sequence using the...

Страница 25: ...is pressed Default off Reading Done Activates Deactivates a sound when a reading is complete Default short beep every time a reading is complete Timer Adjusts the length of the timer sound Select Sho...

Страница 26: ...off to set the length of the idle period that can elapse before the instrument automatically switches off Press OK 5 2 6 Printer and PC Communications 5 2 6 1 Printer Setup Note For compatibility the...

Страница 27: ...rity settings to control access to various functions 1 From Instrument Setup press PASSWORD 2 Select SET PASSWORD to activate the Security List 3 Use the alphanumeric keypad to enter a new Password up...

Страница 28: ...gth and Multi Wavelength A complete record of the analysis is stored including the Date Time Results Sample ID and Operator ID 5 3 1 1 Auto Manual Data Storage The data storage parameter indicates whe...

Страница 29: ...LS to get more information 5 3 1 3 Sending Data from the Data Log Data is sent from the data log as CSV Comma Separated Value files through a USB memory stick to a file named DATALOG The file can then...

Страница 30: ...s the total number of data sets assigned to this selection 5 3 2 Time Course The instrument can store 20 Time Course Data sets The data can be stored manually at the user s discretion after viewing th...

Страница 31: ...e 1 From the Main Menu press RECALL DATA Select TIME COURSE to display the required data If the program is already running press OPTIONS MORE RECALL DATA 2 Press GRAPH or TABLE to view data in a graph...

Страница 32: ...files will be automatically sent as CSV files Comma Separated Value to a TCData Time Course Data file which can be processed using a spreadsheet program The file name will be formatted as TCYear_Month...

Страница 33: ...ted 4 Follow the chemical procedures described in the corresponding Procedures Manual 5 4 2 Stored Program Options 1 From the Main Menu select STORED PROGRAMS Choose the desired method and press START...

Страница 34: ...ution is in effect the DILUTION icon will appear on the display Standard Additions Enables the accuracy of the measurements to be checked The working procedure for a test parameter contains a detailed...

Страница 35: ...a known ratio For example dilution factor can bring the analyzed concentration within the test range 1 Press OPTIONS MORE DILUTION FACTOR The number entered at the dilution factor prompt will be mult...

Страница 36: ...ter the new value Press OK to confirm 5 Press ADJUST to enable the Standard Adjust The STANDARD ADJUST icon will appear Note The adjustment must be within certain limits which vary with each program T...

Страница 37: ...sult is displayed 4 Press OPTIONS MORE REAGENT BLANK 5 Press On to activate the Reagent Blank function 6 The concentration shown on the key is the measured value of the reagent blank To use this value...

Страница 38: ...1 on page 28 5 4 9 Adding Stored Programs to the Favorite Programs List The Favorites menu simplifies test selection by creating a list of the most frequently used tests from the Stored Programs and U...

Страница 39: ...re measured during the rotation Outlier values are recognized and eliminated and the average of the remaining readings is calculated This method increases the precision of the measurement results and...

Страница 40: ...s OPTIONS MORE PERMANENT ON The key now reads Permanent Off 5 5 3 Selecting the Chemical Evaluation Form The chemical form of the test result of a number of parameters can be selected individually 1 I...

Страница 41: ...ed When the specified time has elapsed an acoustic signal is emitted The use of the timer has no influence on the measurement program Dilution Factor Off On A corrective dilution factor can be entered...

Страница 42: ...new test is identified the instrument requests an update Data types are described in Table 5 Instructions for editing values are in the sections following Table 5 Table 5 Program Update Options Progr...

Страница 43: ...king procedure in advance to determine whether this point needs to be changed 1 Activate the Measurement Process line in the data overview and press EDIT 2 Press EDIT select the sequence to be edited...

Страница 44: ...lection can be made from a list of names that describe the corresponding work step In the third column the times for each active timer are entered 5 5 6 2 Updating an Existing Barcode Test Note Only i...

Страница 45: ...king procedure and edit the displayed data in accordance with the working procedure data 5 5 6 3 Programming a New Barcode Test 1 Insert the Light Shield in Cell Compartment 2 2 The instrument needs t...

Страница 46: ...Visit us at www hach com...

Страница 47: ...grams to the favorites menu for frequently used tests Creation of a specific selection of methods and tests 1 From the Main Menu press USER PROGRAMS and then PROGRAM OPTIONS The Program Options menu c...

Страница 48: ...ACK to go to the previous program point or press NEXT to continue with the input of the program data Program Type 6 Select the required option Table 7 and press NEXT 7 If the Single Wavelength section...

Страница 49: ...gth Use the numeric keypad to enter the measurement wavelength The entered wavelength must be in the range from 340 900 nm Press NEXT to proceed Concentration Resolution Select the required number of...

Страница 50: ...ect the formula for the program and press OK to confirm List of available Absorbance Formulas A1 is the absorbance at wavelength 1 A2 is the absorbance at wavelength 2 and so on K1 is the factor at wa...

Страница 51: ...y determining the absorbance values of several standard solutions of known concentration There are three ways to create and store a calibration curve Instructions for each method follows Table 8 Table...

Страница 52: ...ine press the unit key e g mg l or Abs and enter the changed value via the alphanumeric keypad 4 When the data have all been entered press GRAPH to display the curve that results from plotting the ent...

Страница 53: ...econd standard line Place the second standard solution in the cell compartment Press READ Repeat this sequence until all the standard solutions have been measured maximum of 24 solutions The entered a...

Страница 54: ...the alphanumeric keypad After each entry press OK to confirm Note The coefficients can have up to 5 digits and can have a positive or a negative sign 6 1 1 4 Storing a User Program The input of the ba...

Страница 55: ...activated with the check boxes in the left part of the display In the next column a selection can be made from a list of names that designate the corresponding work step In the third column the times...

Страница 56: ...ntly used tests methods in the user program menu can also be added to the list of favorites to simplify selection 1 From the Main Menu press USER PROGRAMS The User Programs list will appear 2 Highligh...

Страница 57: ...e results are about 100 recovery for each addition they are likely correct Results can be verified by running a standard solution through the test Poor recovery indicates that a problem exists For exa...

Страница 58: ...al When the measurement is complete leave the sample cell in the cell holder 4 Press OPTIONS MORE STANDARD ADDITION An overview of the data of the standard addition procedure is displayed 5 Press OK t...

Страница 59: ...11 Use the arrow keys to select the first standard addition volume in the table and place the cell with the corresponding volume of added standard in the cell compartment Press READ Repeat the proced...

Страница 60: ...ecific multiplier for converting absorbance readings to concentration Wavelength Enters the measurement wavelength Use the alphanumeric keypad to enter the measurement wavelength The entered wavelengt...

Страница 61: ...units for concentration measurements or to create a new unit 3 Press OK to confirm Selecting the Concentration Resolution 1 From the Options menu press CONCENTRATION RESOLUTION 2 Select the resolutio...

Страница 62: ...a specific multiplier for converting absorbance readings to concentration Wavelength Enter the measurement wavelengths Use the alphanumeric keypad to enter the measurement wavelengths The entered wave...

Страница 63: ...rs to the coefficient at wavelength 1 K 2 refers to the coefficient at wavelength 2 etc Coefficients can be set negative where subtraction is required 3 To change a wavelength press one of the x keys...

Страница 64: ...me active until the zero measurement has been performed 2 Insert the sample cell into the cell holder Press READ 3 For data storage see section 5 3 1 on page 28 6 5 Time Course Mode The Time Course Mo...

Страница 65: ...ts automatically so that the total range can be displayed 4 Press OK to confirm 5 Press RETURN to return to the scan mode Table 11 Time Course Setup Options Option Description Store folder icon Stores...

Страница 66: ...ndicate a significant event such as the addition of a sample or other reagent The mark is also shown in the table Select STOP to stop taking the sample readings 6 5 3 Analysis of Time Course Data Afte...

Страница 67: ...ingle Use the active cursor to select any point on the measurement curve The difference in time between the two cursors The delta values are correspondingly highlighted and displayed on the x and y ax...

Страница 68: ...5 Connect the USB stick to the USB interface on the DR 2800 Figure 2 on page 11 Press OK The link is established automatically and the software is updated 6 Press OK to return to the System Checks men...

Страница 69: ...t Touch Start 3 The result is displayed and is to be compared with the nominal data of the sample cell 4 Press CANCEL to return to Optical Checks 6 6 3 2 Absorbance Check The Absorbance Check test is...

Страница 70: ...Checks menu press STRAY LIGHT CHECK 2 Remove any cells from the cell compartment 3 Insert the Adapter A for 10 mm rectangular cells in Cell Compartment 2 Press ZERO 4 Insert the sample cell into the C...

Страница 71: ...s reset to 0 1 Press RESET VIS and the Visible Lamp will be reset A system check is performed The duration of the check is 6 minutes 2 Press OK to return to System Checks 6 6 5 1 Factory Service The F...

Страница 72: ...Deleting a Favorite Program 1 From the Main Menu press FAVORITE PROGRAMS The Favorite Programs list will appear 2 Highlight the selection by pressing it or press SELECT BY NUMBER to search for the pr...

Страница 73: ...ay Do not touch the screen with the tip of a ball point pen pencil or similar pointed objects Clean the display with a soft lint free and oil free cotton cloth Diluted window cleaner can also be used...

Страница 74: ...g them or depending on battery types can result in fire or explosion 1 Remove the sample cell from the cell compartment 2 Switch the instrument off 3 Unplug the power cord 4 Turn the instrument over c...

Страница 75: ...installed battery is about 3 5 hours Operating time of a fully charged battery If a battery is charged to 100 capacity and the user carries out 10 measurements per day and the instrument is left on a...

Страница 76: ...Use a Phillips screwdriver to remove the screws from the lamp housing Figure 12 on page 77 9 Carefully lift the lamp housing from the instrument 10 Carefully remove both knurled screws Figure 13 on pa...

Страница 77: ...the Lamp History see section 6 6 5 on page 71 Figure 12 Removing the Lamp 1 Cover Screw 3 Lamp Housing 2 Lamp Housing Screw 2X Figure 13 Replacing the Lamp 1 Halogen Lamp 3 Plug Panel 2 Lamp Base 4 Ro...

Страница 78: ...Visit us at www hach com...

Страница 79: ...r a sales representative It s recommended to execute a Full System Check Please remove cuvette Please close the lid The instrument needs a new Full System Check Remove cell close the lid and press STA...

Страница 80: ...Visit us at www hach com...

Страница 81: ...ware for data transfer LZY274 Lamp tungsten LZV565 Light Shield LZV646 Pour Thru Cell Kit 5940400 Power Supply external LZV610 Protective Cover adapter holder LZV642 Sample Cell 10 mL 1 inch glass squ...

Страница 82: ...Visit us at www hach com...

Страница 83: ...ou send an e mail to intl hach com or contact Hach Company World Headquarters Loveland Colorado U S A Telephone 970 669 3050 Fax 970 669 2932 Technical and Customer Service U S A only Hach Technical a...

Страница 84: ...00 227 4224 U S A only FAX 515 232 3835 In Canada Hach Sales Service Canada Ltd 1313 Border Street Unit 34 Winnipeg Manitoba R3H 0X4 800 665 7635 Canada only Telephone 204 632 5598 FAX 204 694 5134 E...

Страница 85: ...aused by any repair or attempted repair not authorized by Hach Company Any product not used in accordance with the instructions furnished by Hach Company Freight charges to return merchandise to Hach...

Страница 86: ...Visit us at www hach com...

Страница 87: ...allow the sample to be introduced into the cell without having to handle the cell in any way The Pour Thru cell can be oriented to provide two pathlengths Approximately 1 inch 1 cm These two pathlengt...

Страница 88: ...g instructions to install the sample inflow and outflow 1 Connect the Inflow Tube to the fitting at the bottom of the glass funnel and clamp the glass funnel to the stand 2 Connect the Outflow Tube to...

Страница 89: ...ated it is necessary to multiply the results by a pathlength factor of 0 95 or to perform a standard adjustment section 5 4 5 on page 36 on any method that utilizes 1 inch square cells Always confirm...

Страница 90: ...for cleaning Rinse thoroughly with deionized water If windows are cloudy or soiled or bubbles form add 50 mL of a detergent solution to the cell and wait for a few minutes to allow it to take effect...

Страница 91: ...ro and sample measurements and the timer s reaction times waiting times etc are individually defined Table 15 Free Programming Options Input Option Description Name Name of the analysis parameter Vers...

Страница 92: ...ess OK again to confirm the input 3 Note The entered measurement sequence is displayed Timer Key 1 Press the TIMER key to enter any waiting reaction or handling times that have to be taken into accoun...

Страница 93: ...ages of a measurement sequence the series of actions is numbered sequentially e g Z1 Z2 etc Deleting an element of a measuring sequence Select the appropriate line and press DELETE The element is dele...

Страница 94: ...successively in the display in accordance with the input Note The ARROW key deletes the most recently entered element of the formula Table 16 Edit Formula Key Descriptions Screen Key Description ABS V...

Страница 95: ...athematically permissible in the defined formula this also applies to all further basic mathematical operations The following basic mathematical operations are available Addition Subtraction Division...

Страница 96: ...etc Press OK to confirm each entry Abbreviation of Variables F1 Factor 1 F2 Factor 2 1 Wavelength 1 U1 Conversion Factor 1 for the first chemical form U2 Conversion Factor 2 for additional chemical f...

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