Hach DR/820, DR/850, DR/890 Instrument Manual

DR/820, DR/850, and DR/890

Portable Datalogging Colorimeter

Instrument Manual

48440-18

© Hach Company, 1997–2009. All rights reserved. Printed in the U.S.A. jk/te/dk 2/09 2 ed

TABLE OF CONTENTS

SAFETY PRECAUTIONS ........................................................................................................3

SPECIFICATIONS ....................................................................................................................4

OPERATION

SECTION 1 GENERAL DESCRIPTION .............................................................................7

1.1 Instrument Description.........................................................................................................7

1.2 Unpacking the Instrument ....................................................................................................8

1.2.1 Standard Accessories.................................................................................................. 9

1.2.2 Optional Accessories ..................................................................................................9

1.3 Description of the Keypad....................................................................................................9

1.4 Display Screen in Function and Numeric Modes...............................................................12

1.5 Icon and Display Screen.....................................................................................................12

SECTION 2 INSTRUMENT SETUP...................................................................................15

2.1 Battery Installation .............................................................................................................15

2.2 Turning the Instrument On.................................................................................................17

2.3 Setting the Date and Time..................................................................................................17

2.3.1 Entering the Correct Date .........................................................................................17

2.3.2 Entering the Correct Time ........................................................................................18

2.4 Sample Cell Insertion.........................................................................................................19

2.5 Sample Cell Adapter Installation .......................................................................................19

2.5.1 Using the 16-mm COD/Test ‘N Tube Vial Adapter.................................................19

2.6 Using the Instrument Cap as A Light Shield......................................................................20

SECTION 3 INSTRUMENT OPERATION .......................................................................21

3.1 Menus.................................................................................................................................21

3.1.1 Setup Menu...............................................................................................................21

3.1.2 Recall Menu..............................................................................................................22

3.2 Performing an Analysis.....................................................................................................

3.2.1 Colorimeter Setup for Sample Analysis ...................................................................23

3.2.2 Sample Preparation...................................................................................................24

3.2.3 Zeroing the Colorimeter ...........................................................................................24

3.2.4 Measuring the Prepared Sample ...............................................................................24

3.2.5 Alternate Chemical Forms........................................................................................25

3.2.6 Using the Timer ........................................................................................................25

3.2.6.1 Using the Timer in Manual Mode................................................................25

3.2.6.2 Stopping the Timer ...................................................................................... 26

3.3 Reagent Blank Correction ..................................................................................................26

3.4 Adjusting the Standard Curve ............................................................................................27

3.5 Using a Programmed Method ............................................................................................29

.22

3.6 Quality Assurance ..............................................................................................................30

1

TABLE OF CONTENTS

SECTION 4 CREATING USER-ENTERED PROGRAMS.............................................. 31

4.1 User-Entered Programs...................................................................................................... 32

4.2 Calibration Curves ............................................................................................................. 32

4.3 User-entered Program Information for Bleaching Chemistries......................................... 32

4.4 Creating a New User-entered Program.............................................................................. 33

4.5 Reviewing and Editing User-Entered Programs................................................................ 36

4.6 Erasing User-entered Programs ......................................................................................... 37

SECTION 5 DATA RECALL AND STORAGE ................................................................. 39

5.1 Recalling Data.................................................................................................................... 39

5.2 Erasing All Stored Data .....................................................................................................40

SECTION 6 PRINTING AND DATA TRANSFER............................................................ 43

6.1 Data Transfer Adapter Basics............................................................................................ 43

6.1.1 Attaching the Data Transfer Adapter ....................................................................... 43

6.2 RS232 Connections............................................................................................................ 44

6.2.1 Setup and Use of the Printer..................................................................................... 45

6.2.2 Connecting to a Personal Computer......................................................................... 46

6.3 Sending Data to a Printer or Computer.............................................................................. 47

6.3.1 Sending Currently Displayed Data........................................................................... 47

6.3.2 Sending Recalled Data ............................................................................................. 48

6.3.3 Sending All Stored Data........................................................................................... 48

SECTION 7 MAINTENANCE............................................................................................. 51

7.1 Cleaning the Colorimeter................................................................................................... 51

7.1.1 Cleaning the Data Transfer Adapter......................................................................... 51

7.1.2 Sample Cells............................................................................................................. 51

7.2 Replacement Instructions................................................................................................... 51

7.2.1 Battery Replacement ................................................................................................ 51

SECTION 8 TROUBLESHOOTING .................................................................................. 53

8.1 Introduction........................................................................................................................ 53

8.1.1 Error Codes .............................................................................................................. 53

8.1.2 Beeper/Error Icon..................................................................................................... 54

8.1.3 Concentration Out of Range..................................................................................... 54

8.1.4 Low Battery.............................................................................................................. 54

GENERAL INFORMATION

REPLACEMENT PARTS AND ACCESSORIES ................................................................. 57

How To Order.......................................................................................................................... 59

Repair Service.......................................................................................................................... 60

Warranty .................................................................................................................................. 61

CERTIFICATION ...................................................................................................................63

2

SAFETY PRECAUTIONS

Before attempting to unpack, set up or operate this instrument,
please read this entire manual. Pay particular attention to all
warnings, cautions and notes. Failure to do so could result in
serious injury to the operator or damage to the equipment.

To ensure the protection provided by this equipment is not
impaired, this equipment MUST NOT be installed or used in any
manner other than that which is specified in this manual.

Use of Hazard Information

If multiple hazards exist, the signal word corresponding to the
greatest hazard shall be used.

DANGER

Indicates either a potentially or an imminently hazardous situation which, if
not avoided, could result in either death or serious injury.

CAUTION

Indicates a potentially hazardous situation that may result in minor or
moderate injury.

Precautionary Labels

Electrical equipment marked with this symbol may not be disposed of in European public dis­posal systems after 12 August of 2005. In conformity with European local and national regula­tions (EU Directive 2002/96/EC), European electrical equipment users must now return old or
end-of life equipment to the Producer for disposal at no charge to the user.

Note: For return for recycling, please contact the equipment producer or supplier for
instructions on how to return end-of-life equipment, producer-supplied electrical accessories,
and all auxiliary items for proper disposal.

This is the safety alert symbol. Obey all safety messages that follow this symbol to avoid
potential injury. If on the instrument, refer to the instruction manual for operation or safety
information.

NOTE

Information that requires special emphasis.

Please pay particular attention to labels and tags attached to the
instrument. Personal injury or damage to the instrument could
occur if not observed.

The DR/800 Series Colorimeters are Class 1 LED products. A
Class 1 LED product has insufficient energy to be considered an
eye hazard.

Section 2.1 Battery Installation

SECTION 4 CREATING USER-ENTERED PROGRAMS

3

SPECIFICATIONS

Specifications subject to change without notice.

Wavelength Range(s):

• Model DR/890: 420, 520, 560, 610 nm

• Model DR/850: 520, 610 nm

• Model DR/820: 520 nm

Wavelength Accuracy: ±1 nm

Wavelength Selection: Automatic

Photometric Linearity: ±0.002 A (0-1 A)

Photometric Reproducibility: ±0.005 A (0-1 A)

Photometric Accuracy: ±0.005 A @1.0 ABS Nominal

Source Lamp: Light Emitting Diode (LED)

Detector: Silicon Photodiode

Data Readout: 4-digit LCD, 1.5-cm Character Height

Readout Modes: % Transmittance, Absorbance, Concentration

External Outputs: IR (Infrared to RS-232 Serial using the Data

Transfer Adapter)

Battery Power: (4) AA alkaline cells

Instrument Dimensions: 23.6 x 8.7 x 4.7 cm (9.3 x 3.4 x 1.9

inches)

Instrument Weight: 470 g (1 lb.)

Photometric Range: 0-2 A

Stray Light: <1.0% at 400 nm

Battery Life: 6 months (typical)

Temperature Range:

Operating Range: 0 to 50 °C (32 to 122 °F)
Storage Range: -40 to 60 °C (- 40 to 140 °F)

Humidity: 90% at 50 °C

Environmental: Designed to meet IP67 Standard; dustproof and

waterproof

4

OPERATION

DANGER

Handling chemical samples, standards, and reagents can be dangerous. Review the necessary
Material Safety Data Sheets and become familiar with all safety procedures before handling
any chemicals.

DANGER

La manipulation des échantillons chimiques, étalons et réactifs peut être dangereuse. Lire les Fiches
de Données de Sécurité des Produits (FDSP) et se familiariser avec toutes les procédures de sécurité
avant de manipuler tous les produits chimiques.

PELIGRO

La manipulación de muestras químicas, estándares y reactivos puede ser peligrosa. Revise las fichas
de seguridad de materiales y familiarícese con los procedimientos de seguridad antes de manipular
productos químicos.

GEFAHR

Das Arbeiten mit chemischen Proben, Standards und Reagenzien ist mit Gefahren verbunden.
Es wird dem Benutzer dieser Produkte empfohlen, sich vor der Arbeit mit sicheren Verfahrensweisen
und dem richtigen Gebrauch der Chemikalien vertraut zu machen und alle entsprechenden
Materialsicherheitsdatenblätter aufmerksam zu lesen.

PERIGO

A manipulação de amostras, padrões e reagentes químicos pode ser perigosa. Reveja a folha dos
dados de segurança do material e familiarize-se com todos os procedimentos de segurança antes
de manipular quaisquer produtos químicos.

5

6

SECTION 1 GENERAL DESCRIPTION

1.1 Instrument Description

The Hach DR/800 Series Colorimeter shown in Figure 1 is a
microprocessor-controlled, LED-sourced filter photometer
suitable for colorimetric testing in the laboratory or the field. The
instrument is precalibrated for common colorimetric
measurements and includes convenient calibration capability for
user-entered and future Hach methods. Instrument
features include:

• Test results are displayed in concentration, absorbance,

or percent transmittance.

• Automatic wavelength selection and ranging in the

preprogrammed parameters.

• Data storage and recall for datalogging in the field

or laboratory.

• Conversion of results to alternate forms for many parameters

(i.e., PO

, P2O5, P).

4

• Reagent Blank Correction and Standard Adjust features may

be used to compensate for lot-to-lot variations in reagents.

• Icon prompts displayed during testing.

• A built-in timer to monitor specific reaction times called for

in the test procedures. Appropriate times are programmed
into the calibration data for specific tests. The timer also can
be used manually by the operator independent of the
stored methods.

• IR output for RS232 interface capability allows an external

printer or computer to interface with the colorimeter.

• Entry of user-entered methods or new Hach methods.

• Error signals for procedural or instrument troubleshooting.

The colorimeter operates on battery power. The instrument holds
four AA-size alkaline dry cells (batteries supplied) that power the
instrument for at least six (6) months.

7

SECTION 1, continued

Figure 1 DR/800 Series Colorimeter Standard Package*

1.2 Unpacking the Instrument

Remove the instrument and accessories from the shipping
container and inspect each item for any damage that may have
occurred during shipping. Verify that all items listed on the
packing slip are included. If any items are missing or damaged,
please contact Hach Customer Service, Loveland, Colorado
for instructions.

* Carrying Case may be ordered separately.

8

SECTION 1, continued

Hach’s toll-free number for customers within the United States is
800-227-4224. For customers outside the United States, contact
the Hach office or distributor serving you.

1.2.1 Standard Accessories

• Sample Cells — (2) round, 1-inch pathlength, glass, with

• COD/TNT Adapter for use with 16-mm vials used in COD

• Batteries — (4) AA alkaline

• Documentation package — includes Instrument Manual and

In addition to these standard accessories, several other optional
accessories are available from Hach Company (refer to
Replacement Parts and Accessories).

10-mL, 20-mL, and 25-mL marks; (2) 1-cm pathlength,
plastic

and Test ’N Tube methods.

Procedures Manual.

1.2.2 Optional Accessories

• Data Transfer Adapter (for RS232 interface)

• HachLink™ Software

• Instrument case

• DR/Check™ ABS Standard

1.3 Description of the Keypad

Figure 2 shows the colorimeter’s keypad. The description and
function of each individual key is given in Table 1 .

9

SECTION 1, continued

Figure 2 Keypad

Table 1 Keys and Descriptions

KEY DESCRIPTION

Allows the user to select a program. Also used as a numeric key function when the “#”
icon is illuminated at the base of the display screen.

Accesses the SETUP menu (the SETUP icon illuminates in the upper left-hand corner of
the display screen). The setup menu provides access to options such as reagent blank,
standard adjust, user-entered programs, and instrument configurations.

Also used as a numeric key function when the “#” icon is illuminated at the base of the
display screen.

Prints currently displayed data. In the RECALL menu, prints recalled data. Also used as a
numeric key function when the “#” icon is illuminated at the base of the display screen.

Use this key to turn the instrument on and, when the instrument is on and the EXIT icon is
not illuminated, press this key to turn the instrument off.

When the EXIT icon is illuminated at the base of the display screen, the
the current entry or selection.

EXIT key cancels

10

SECTION 1, continued

Table 1 Keys and Descriptions (Continued)

KEY DESCRIPTION

Displays the current date. In the RECALL menu, displays the date the recalled sample
was stored. Also used as a numeric key function when the “
base of the display screen. Used to set the current date from the SETUP menu.

#” icon is illuminated at the

Displays the current time. In the
was stored. Also used as a numeric key function when the “#” icon is illuminated at the
base of the display screen. Used to set the current time from the

When performing an analysis, this key displays the concentration value of the reading.
Used as a toggle key to access alternate chemical forms, if available. Also used as a
numeric key function when the “

Scrolls up through selected menus or stored data.

When performing an analysis, this key allows the user to store a current reading in one of
99 sample locations. The user can store the reading as numbers 1-99 by pressing
ENTER. Use the up and down arrow keys to find unused storage numbers or use numeric
keys to enter a sample number. Also used as a numeric key function when the “#” icon is
illuminated at the base of the display screen.

Begins the retrieval of stored sample readings (
left portion of the screen). Also used as a numeric key function when the “
illuminated at the base of the display screen.

Toggles between displaying Absorbance and % Transmittance. Also used as a numeric
key function when the “

#” icon is illuminated at the base of the display screen.

RECALL menu, displays the time the recalled sample

SETUP menu.

#” icon is illuminated at the base of the display screen.

RECALL icon illuminates in the upper-

#” icon is

Scrolls down through selected menus or stored data.

Zeros the instrument on the current sample blank. Also used as a numeric key function
when the “

When the READ icon is illuminated at the base of the display screen, this key reads and
displays the sample concentration. Also used as a numeric key function when the “
is illuminated at the base of the display screen; the first press is a decimal, the second
press toggles the value sign.

If using a Hach-stored program, the TIMER key automatically sets the appropriate
reaction time. If not in a Hach-stored program, the TIMER key allows the user to set a
timer. When the “
most recent level of action (deletes the whole entry, not just the last number).

Within a menu, selects the displayed menu item. During numeric entry, accepts the
displayed value.

#” icon is illuminated at the base of the display screen.

#” icon

#” icon is illuminated at the base of the display screen, CE clears the

11

SECTION 1, continued

1.4 Display Screen in Function and Numeric Modes

The main display operates in two modes: function mode and
numeric mode. The user does not select the mode, changeover is
automatic depending on the options selected, where the user is in
an analysis, and what information the instrument needs from
the user.

The main display shows action icons (
displayed below the horizontal line. This shows there are two
available options to select (zero the instrument, or take a reading)
at this point in the analysis.

The numeric mode is signified by the “
the horizontal line. In the numeric mode, some function keys act
as numeric entry keys (corresponding to the number on the key).

1.5 Icon and Display Screen

Figure 3 shows the icons displayed by the DR/800 Series
Colorimeters. Tabl e 2 provides a brief description of each
display element.

Figure 3 Icon and Main Display Screen

ZERO and READ)

#” icon illuminated below

12

SECTION 1, continued

Table 2 Main Display Screen Icons

ITEM NO. DEFINITION

1 Indicates the user is in the SETUP menu.

2 Indicates the user is in the

3 The sample concentration exceeds the limits of the selected program.

4 Sample cell icon. Indicates a reagent blank adjustment is in use for the current program.

5 Standard adjust icon. Indicates a standard adjust is in use for the current program.

6 Indicates a low battery condition - replace the batteries as soon as possible.

7 These three icons follow the sample reading and represent either absorbance, percent

transmittance, milligrams per liter, micrograms per liter, or grams per liter.

8 Illuminates whenever the numbers in the main display (22) or the sample display (11) refer

to a sample number.

9 Indicates the instrument is waiting for information from the user.

10 Depending on the arrow(s) illuminated, these icons indicate the available scroll direction

(using the ARROW keys) for accessing options.

11 In the RECALL menu or when storing data, these digits show the selected sample number.

12 Most icons displayed in this area are action icons. Action icons tell the user what actions

are acceptable options during an analysis.

13 Indicates an invalid key press was made. This icon flashes briefly accompanied by a short

beep.

14 Exit action icon - (when illuminated) tells the user that pressing the EXIT key to exit the

current level of action is an acceptable option.

RECALL menu.

15 Enter action icon - (when illuminated) tells the user that pressing the ENTER key to confirm

an action is an acceptable option.

16 Numeric entry action icon - (when illuminated) tells the user the numeric key pad is active.

17 Timer action icon - (when illuminated) tells the user that the instrument is presently running

a timer. This icon will flash while the timer is counting.

18 Read action icon - (when illuminated) tells the user that pressing the READ key to read the

sample cell is an acceptable option.

19 Zero action icon - (when illuminated) tells the user that pressing the ZERO key to zero the

instrument on a sample cell is an acceptable option.

20 Depending on the currently active menu, the series of alphabetical letters displayed here

gives information on a current reading, a stored reading, indicates the options available
within a menu, or prompts the user for the next action.

21 Shows the active program number, (either a user-entered (101-110) or Hach-stored

program (1-100). The program number is displayed immediately below the PRGM icon.

22 Depending on the currently active menu, the numbers displayed here represent either the

sample reading, the clock timer, or the numeric characters entered by the user.

13

14

SECTION 2 INSTRUMENT SETUP

2.1 Battery Installation

Power is supplied by four AA-sized alkaline batteries. Typically,
a set of batteries provides approximately six months of operation.
The colorimeter lamp is an LED and is on only long enough for
the measurement sequence to take place (approximately
2 seconds).

The instrument will automatically shut off if no keystrokes are
made for 15 minutes when in normal mode and four hours when
in user-entry mode.

Figure 4 provides an exploded view of the battery installation.
When replacing discharged batteries, always replace the complete
set of four.

Hach recommends using alkaline batteries in this instrument. Do

not use rechargeable Nickel Cadmium (NiCad) batteries.

Note: For performance
reasons, never remove the
battery cover from this
product except when
servicing the batteries.

DANGER
Use of nickel-cadmium
batteries under a fault
condition creates a
potential fire hazard.

The battery compartment is accessible from the underside of the
instrument. Make sure the sample cell compartment is empty. Lay
the instrument upside down on a padded surface, and install
batteries as follows:

1. Disconnect the Data Transfer Adapter (if connected) from

the instrument.

2. Loosen the two battery compartment screws and remove the
battery compartment door as shown in Figure 4.

3. Install four AA alkaline batteries in the battery holder as
shown in Figure 4. Match the polarities of the batteries with
the polarity markings in the battery compartment.

4. Replace the battery compartment cover, tighten the screws,
and return the instrument to the upright position.

PELIGRO
La utilización de pilas de níquel-cadmio en condiciones de falla crea
el riesgo de incendio.

15

SECTION 2, continued

PERIGRO
O uso de baterias de níquel-cádmio em condição de falha cria a
possibilidade de incêndio.

DANGER
L'utilisation de batteries nickel-cadmium dans des conditions
inappropriées crée un risque d'incendie.

GEFAHR
Unter einer Störungsbedingung stellt die Verwendung von Nickel­Kadmium-Batterien eine Feuergefahr dar.

Figure 4 Battery Installation

16

SECTION 2, continued

2.2 Turning the Instrument On

Once batteries are installed, turn the instrument on using the

EXIT/I/Okey (located on the top row, far-right column of the

instrument keypad).

Press the key once to power-on the instrument. The display will
show the software version number, then will default to the last
used program number. The instrument is now ready for operation.

2.3 Setting the Date and Time

Setting the instrument’s date and time allows sample readings to
be stored and recalled with the proper date and time. Check the
currently entered date or time by pressing the respective

TIME key.

To set the date and time, continue with Section 2.3.1 or

2.3.2 below.

DATE or

2.3.1 Entering the Correct Date

Check the current date by pressing the DATE key. If the date is
incorrect, follow the procedure below to change it.

Enter the correct year, then the correct month and day
as follows:

1. Press the

2. Access the

keypad. (The down
display is shown.)

3. Press the down

4. Press the

5. Four horizontal lines (showing available spaces for numeric

entry) and
corresponding to the correct year using the numeric keypad.
For instance, if the year is 1997, press

ENTER key.

I/O key to turn the instrument on.

SETUP menu by pressing the SETUP key on the

ARROW icon on the right side of the

ARROW key until DATE is displayed.

ENTER key to select the date option.

YEAR ? will appear on the display. Enter the digits

1997 then the

If an incorrect number is entered, press the
enter the information.

17

CE key and re-

SECTION 2, continued

Next, the instrument prompts for the month and day.

6. Enter the correct month and day using the numeric keypad.

The month must be entered first, followed by the day. If an
incorrect number is entered, press the
the information.

Note: When entering a one digit month or day, always press the ZERO

key before the digit. For example: If the month and day to be entered
is March 4, press

ENTER key to accept.

7. Press the ENTER key to accept the new information. Press the

EXIT key to return to the main menu

2.3.2 Entering the Correct Time

1. Press the I/O key to turn the instrument on.

CE key and re-enter

0304 on the numeric keypad, then press the

2. Access the

keypad. (The down

SETUP menu by pressing the SETUP key on the

ARROW icon on the right side of the

display is shown.)

3. Press the down

4. Press the

ARROW key until TIME is displayed.

ENTER key to select the time option.

5. Enter the time in 24-hour (military) notation using the

numeric keypad then press the
For example, 9:00 a.m. is entered as
p.m. is entered as
entered, press the

1400 ENTER. If an incorrect number is
CE key and re-enter the information.

6. The display returns to the setup menu. Press the

ENTER key to accept the entry.

0900 ENTER and 2:00

EXIT key to

return to the main menu.

18

SECTION 2, continued

2.4 Sample Cell Insertion

Wipe the sample cell with a lint-free cloth or tissue and insert the
cell into the sample cell compartment with the diamond-shaped
marker toward the keypad.

Figure 5 Placing Samples in the Sample Cell Compartment

2.5 Sample Cell Adapter Installation

When installing an adapter into the sample cell compartment,
insert the adapter into the cell compartment and rotate until it
drops into the alignment slots. Finish installation by gently
pushing down on the adapter until it snaps into position.

Place the appropriate vial or sample cell into the adapter - the vial
or sample cell should fit well into the adapter. If it does not,
double-check that the correct sample container (vial or sample
cell) is being used and that the adapter is installed correctly.

2.5.1 Using the 16-mm COD/Test ‘N Tube Vial Adapter

The methods for chemical oxygen demand (COD) and Test ‘N
Tube (TNT) determinations in the colorimeter procedures manual
use 16-mm vials as the sample cell for the colorimetric
measurement. This adapter also holds a standard 16-mm test tube.

Place the COD/TNT Adapter in the instrument's sample cell
compartment as instructed in Section 2.5, above. Place the vial
into the COD/TNT Adapter (see Figure 6).

Always place the instrument cap over the adapter when
measuring in bright sunlight (see Figure 7).

19

SECTION 2, continued

Figure 6 Installing the COD/TNT Adapter

2.6 Using the Instrument Cap as A Light Shield

The colorimeter cap is removable (by sliding it away from the
keypad) to expose the sample cell compartment. The instrument
cap also functions as a light shield. Samples may be analyzed
without the light shield in place but using the light shield provides
a good seal against stray light and contributes to more accurate
results. Use of the light shield is especially important when
performing an analysis in bright light or direct sunlight.

To use the instrument cover as a light shield during
measurements, place the cap over the sample cell, into the
grooved marks on the instrument. See Figure 7.

Figure 7 Installing the Light Shield

20

SECTION 3 INSTRUMENT OPERATION

3.1 Menus

The instrument has two important menus which allow access to
different options. The menus are:

• Setup Menu

• Recall Menu

Once the user has selected the desired menu, the arrow icons
illuminate on the main display screen. The arrows indicate that
additional options are available in this menu. Press the up

ARROW key (whichever arrow is illuminated) to scroll until

down
the desired option is displayed. A press of the
time selects the displayed option.

ENTER key at this

or

3.1.1 Setup Menu

When choosing options from menus, the up or down
keys,
within menu options. Use the
Press

ENTER, and EXIT keys help navigate between menus and

ENTER key to select a menu option.

ENTER again to accept a new setting. Pressing the EXIT key

ARROW

leaves a menu or leaves the displayed item unchanged.

Enter the Setup Menu from the Main Menu by pressing the

SETUP key.

Refer to the arrow icons on the main display for an indication of
which key (up

ARROW or down ARROW) to press on the keypad -

the direction of the illuminated icon on the main display indicates
the available scrolling direction. The up and down

ARROW

(scroll) keys move from one menu option to the next.

Example: when the down arrow icon is illuminated on the display
screen, the user only has the option to press the down

ARROW key

to move from one option to the next. Once the user scrolls down,
the down arrow icon changes to a dual-direction arrow icon (up
and down arrows) until the user reaches the last menu option
available in that menu.

The following instrument operating features are available in the

Setup menu

• BLANK - Used to compensate for color contributed by the

reagents in a reagent blank. Readjust for each new lot of

21

SECTION 3, continued

reagents. Press the ENTER key to activate this option. The
default setting is off. Chemistries which zero on a reagent
blank do not have this option available.

• STD - Standard Adjust option allows for entry of the value of

the prepared standard. Press the
option. The default setting is off.

ENTER key to activate this

Note: The BLANK and/or
STD options may or may
not be available,
depending on the selected
Hach program; the BLANK
and STD options are
always available for user­entered programs.

• PRINT (ALL) - Prints all stored data to a printer or

downloads it to a personal computer. The information printed
includes: sample concentration reading, date of sample, time
of sample, units, sample number, program number,
Absorbance, and %T. Refer to Section SECTION 6 for
detailed printing information and to Figure 10 for an example
of a printout. Press the

ENTER key to activate this option.

• USER - Allows access to the User-Entered Program Menu.

Press the
New User-entered Program on page 33 for more information.

ENTER key to activate this option. See Creating a

• DATE - Allows the user to set the date. Press the ENTER key

to activate this option. See Section 2.3.1 for more
information.

• TIME - Allows the user to set the time. Press the ENTER key

to activate this option. See Section 2.3.2 for more
information.

• ERASE (ALL) - This clears all the data previously stored in

memory. Press the

3.1.2 Recall Menu

The recall menu allows access to stored data. Complete
information and instructions for the use of this menu is presented
in SECTION 5 DATA RECALL AND STORAGE.

3.2 Performing an Analysis

The procedures manual provides illustrated, step-by-step
procedures for performing all the factory-entered methods. This
instrument manual has supplemental information on how the
instrument performs the necessary functions, and how to use the
special operating features. Once you are familiar with the

ENTER key to activate this option.

22

SECTION 3, continued

instrument, the instructions in the procedure manual should be
sufficient to analyze your samples.

Colorimetric testing with preprogrammed calibrations can be
divided into four general phases:

1. Colorimeter setup

2. Sample preparation

3. Zeroing the instrument

4. Measuring the prepared sample

The following sections describe each phase in detail.

3.2.1 Colorimeter Setup for Sample Analysis

The colorimeter setup using a Hach program begins by selecting
the desired program number. Programs numbers can be found in
the individual procedure. (See the DR/800 Series Procedures
manual supplied with your instrument.) Prompting icons will
appear to indicate which keys are acceptable for the user to select.
After turning the instrument on, the main display shows
information from the last program used before the instrument was
turned off.

If a different program is desired, press the
the desired program number with the numeric keypad. The
instrument will recall that program.

If the number selected is not valid, an error signal sounds and the
display momentarily flashes an error icon. The display returns to
the prompt for the program number. Re-enter the correct program
number. Only select chemistries are available on the DR/820 and
DR/850. See APPENDIX A AVAILABLE PARAMETERS AND
RANGES on page 65.

When the program number has been successfully entered, the
display immediately prompts the user to zero the instrument by
illuminating the

ZERO action icon.

23

PRGM key and enter

SECTION 3, continued

3.2.2 Sample Preparation

For colorimetric tests, sample preparation is next. The zero
solution (or blank) and sample are usually prepared at this time.
Generally, sample preparation consists of adding the contents of a
premeasured reagent pillow to a small volume of sample. Follow
the instructions in the procedure specific to your analysis.

It is important to observe the waiting period specified in the test
procedure to ensure the color from the reaction of the reagent(s)
with the target analyte develops fully. Many procedures also give
a maximum time limit after which the color may begin to fade.

The instrument has method-specific timers for color development
times pre-programmed into the software. The user is notified
when the time has elapsed by a series of short beeps.

3.2.3 Zeroing the Colorimeter

The instrument must be zeroed for each test or series of tests to
establish a zero reference for the measurement. This is done by
placing a solution recognized as the blank solution in the cell
holder, covering the sample with the instrument cap, and pressing

ZERO key. The next prompt will display zeros and illuminate

the

READ action icon. The instrument is now ready to take the

the
first sample reading.

Note: Once the zero reference point has been established, several

samples can be measured consecutively by placing each of them
into the cell holder and pressing the
be re-zeroed at any time by placing the zero solution (blank) into the
instrument and pressing the

3.2.4 Measuring the Prepared Sample

When ready to take the reading, place the prepared sample in the
sample compartment. For best results orient the sample cell
consistently for each measurement; see Figure 5 on page 19.
Place the instrument cap (light shield) over the sample cell and
press the
displayed.

Toggle between absorbance or percent transmittance values by
successive presses of the
restore the concentration display. Successive presses of the CONC

READ key. After a brief pause, the results will be

READ key. The instrument can

ZERO key.

ABS %T key. Press the CONC key to

24

SECTION 3, continued

key toggles between alternate forms, if any. See Appendix A for
currently available chemistries and their alternate forms.

3.2.5 Alternate Chemical Forms

Many Hach programs provide alternate chemical forms for the
measured parameter. Press the
alternate forms after the measurement is displayed. Each press of
the

CONC key takes the user to the next alternate chemical form.

For example: In Program #1, mg/L Al may also be displayed as
mg/L Al
returns to its original form and reading.

3.2.6 Using the Timer

Many Hach test methods use one or more timers which are pre­programmed into the DR/800 Series Colorimeters. When the
procedure instructs you to, press the
interval. Press
beeps will sound at the end of a timer interval. If the method
requires additional timers, the instrument will automatically
display the next timer when the first timer elapses. Press
to start the next timer.

2O3

CONC key to scroll through these

. If alternate forms are not available, the instrument

TIMER key to display a timer

ENTER to start the timer count-down. Several

ENTER

To zero the instrument on the blank while the timer is running,
press the

EXIT key. The timer icon will continue to flash,

indicating the timer is running. Press
available functions within the method (such as blank correction)
while the timer is running. To return to the timer display, press the

TIMER key.

3.2.6.1 Using the Timer in Manual Mode

The manual timer function allows the operator to use the timer
independently from the method timer. Make sure the instrument
is not in numeric entry mode and activate the timer with a press of

TIMER key. If using a pre-programmed timer, press the TIMER

the
key again.

#” action icon is illuminated, to indicate that the numeric

The “
keypad is active. Enter the desired time using the numeric
keypad. For example, to enter 2 minutes, press
To enter 12 minutes, press
momentarily show the entered time, then the timer countdown

ZERO, or perform other

200, then ENTER.

1200, then ENTER. The display will

25

SECTION 3, continued

will begin. The display will show the remaining time. At the end
of the elapsed time, the instrument sounds five beeps.

3.2.6.2 Stopping the Timer

Stop the timer at any point in the countdown by pressing the

ENTER key. If a pre-programmed timer was in use, the full timer

period will be displayed. Press the
count down. If a manual timer was in use, the display for entering
a new length of time will be shown, see Section 3.2.6.1 Using the
Timer in Manual Mode. Press

3.3 Reagent Blank Correction

The Reagent Blank Correction can be used with some of the
factory-entered methods. It subtracts the color absorbed when
running the test with deionized water instead of sample. The
blank value is subtracted from every result to correct for any
background color due to reagents.

ENTER key again to resume

EXIT to leave the timer mode.

When using the Reagent Blank Correction feature, the blank
correction should be entered before the Standard Adjust feature
is used.

To enter a programmed correction for the reagent blank:

1. Run the test using deionized water with each new lot

of reagents.

2. Press

READ to obtain the blank value; record the value for use

in step 4..

3. Press

will show

SETUP, scroll to BLANK and press ENTER. The display

BLANK?.

4. Enter the blank value obtained in step 2..

5. Press

ENTER to accept the value as the blank to be subtracted

from each reading.

6. The display will show 0.00 mg/L (resolution and units vary

with the method) and the sample cell icon will be displayed,
indicating that the reagent blank feature is enabled and the
blank value will be subtracted from each reading. Repeat the
reagent blank adjust for each new lot of reagents.

26

SECTION 3, continued

Note: After entering a reagent blank adjust, the display may flash “limit”

when zeroing if the sample used for zeroing has a lower absorbance
value than the reagent blank.

To disable the Reagent Blank adjust feature, press SETUP, scroll

BLANK and press ENTER twice. The concentration readings

to
will be displayed without subtracting the blank. The sample cell
icon will no longer appear in the display.

Do not attempt to use the Reagent Blank Adjust feature if the
procedure uses a reagent blank for zeroing.

3.4 Adjusting the Standard Curve

The DR/890 Colorimeter has over 90 Hach Programs
permanently installed in memory (other models have fewer
programs). A program usually includes a preprogrammed
calibration curve. Each curve is the result of an extensive
calibration performed under ideal conditions and is normally
adequate for most testing. Deviations from the curve can occur
from using compromised testing reagents, defective sample cells,
incorrect test procedure, incorrect technique, or other correctable
causes. Interfering substances or other causes may be beyond the
analyst’s control.

In some situations, using the preprogrammed curve may not
be convenient:

• Running tests where frequent calibration curve checks

are required.

• Testing samples which give a consistent test interference.

Consider the following before adjusting the calibration curve:

1. Will future test results be improved by adjusting the curve?

2. Are interfering substances consistent in all the samples that

you will test?

Any precision and test range information provided with the
procedure may not apply to an adjusted curve calibration.

You can adjust many of the calibration curves by following the
steps found in the test procedures. Working carefully is

27

SECTION 3, continued

important. After the adjustment, it is wise to run standard
solutions of several concentrations to make sure the adjusted
curve is satisfactory. Perform standard additions on typical
samples to help determine if the adjusted curve is acceptable.

Think of the standard adjust measurement as a two-step process.
First, the instrument measures the sample using the
preprogrammed calibration. Second, it multiplies this
measurement by an adjustment factor. The factor is the same for
all concentrations. The instrument will remember the factor
indefinitely and will display the standard adjustment icon when it
is used.

Adjust the calibration curve using the reading obtained with a
Hach Standard Solution or carefully prepared standard made
from a concentrated Hach Standard Solution. It is important to
adjust the curve in the correct concentration range. For most
purposes, Hach recommends adjusting the curve using a standard
concentration that is 70 to 85% of the maximum concentration
range of the test.

For example, the Hach preprogrammed method for fluoride has a
range of 0-2.0 mg/L F. To adjust the calibration curve, use a
standard with a concentration between 1.4-1.6 mg/L. Hach
provides a 1.60 mg/L Fluoride Standard Solution (75% of the full
range). This is a convenient standard to use for adjusting the
calibration curve.

If the range of all your samples is known to be below a
concentration that is less than 50% of the full range (50% of 2.0 is

1.0 mg/L), then adjust the standard curve with a standard that is
within that range.

For example, if all the samples contain 0.6-0.9 mg/L F, you may
use a 1.00 mg/L fluoride standard to adjust the curve. You may
use the 1.00 mg/L standard because it is closer to the sample
range you are working with.

If you are using a Reagent Blank Correction, the blank correction
should be entered before the standard curve is adjusted.

To adjust the standard curve:

28

SECTION 3, continued

1. Prepare the standard.

2. Use the standard as the sample in the procedure.

3. When the reading for the standard is obtained, press

4. Use the

5. Press

ARROW keys to scroll to the “STD” setup option.

ENTER to activate the standard adjust option.

SETUP.

6. Enter the concentration of the standard used.

7. Press

ENTER. The standard adjust icon will be displayed,

indicating that the curve has been adjusted with the standard.

Note: If the attempted correction is outside the allowable adjustment

limit, the instrument will beep and flash the error icon and the
operation will not be allowed.

To eliminate the standard curve adjustment:

1. Press the

2. Enter the stored-program number and press

PRGM key.

ENTER.

3. Press the

4. Press an

Note: On will be displayed if an adjustment is in use.

SETUP key

ARROW key to display STD.

5. Press ENTER twice.

3.5 Using a Programmed Method

Hach programmed and user-entered program options are
available on this instrument. The Procedures Manual supplied at
the time of purchase contains all currently available Hach­programmed methods. Up to ten user-programmed methods may
be entered into the instrument. See Creating a New User-entered
Program on page 33 for instructions for this function. Tabl e 3
shows the components of typical factory programmed
test method.

29

SECTION 3, continued

Step Action/Keystroke Display

Tabl e 3

1. Turn power on. Press the EXIT/I/O

2. Select the Program

number to be used.

3. As needed, set, then start
the TIMER.

4. ZERO the instrument using
the sample blank.

Press the PGRM key, then enter
the program number and press
the ENTER

Press the TIMER key. In a Hach­stored program, the timer
automatically defaults to the
appropriate reaction time.

Press ENTER to start the timer.

Insert blank and press ZERO

key.

key. The instrument defaults to and

displays the initial screen of the
last program used.

EXAMPLE: If program 20 was the
last program in use, the
instrument will automatically recall
program 20.

After the PGRM key is pressed, a
blinking cursor appears with a
question mark. Enter the desired
program number. Press ENTER to
confirm this action and recall the
desired program number.

The entered or programmed
reaction time will display and
count down to zero.

. After the ZERO key is pressed,

the instrument zeros on the
sample cell.

5. Obtain reading in
concentration, absorbance,
or % transmittance.

Place the prepared sample into
the cell holder. Press READ.

3.6 Quality Assurance

Verify the performance of your instrument in seconds using Hach
DR/Check™ ABS Secondary Standards (Cat. No. 27639-00).
These gel standards provide a measure of instrument absorbance
for use anywhere, anytime, as often as laboratory quality
assurance procedures suggest. The kit includes a blank and one
standard each of a low-, mid-, and high range absorbance value
from 0 to 2 ABS, for use with any DR/800 Series Colorimeter.

The instrument reads the sample
and displays the results.

30

SECTION 4 CREATING USER-ENTERED

PROGRAMS

DANGER
This instrument is not
intended for use with
flammable samples or
those containing
hydrocarbons.

PELIGRO
Este instrumento no está destinado para uso con muestras inflamables
o que contengan hidrocarburos.

PERIGO
Este instrumento não é feito com o fim de ser empregado com
amostras inflamáveis ou aquelas que contêm hidrocarbonetos.

DANGER
Cet instrument n’est pas conçu pour une utilisation avec des
échantillons inflammables ou des échantillons contenant des
hydrocarbures.

GEFAHR
Dieses Gerät darf nicht für Tests mit brennbaren Proben oder Proben,
die Kohlenwasserstoffe enthalten, benutzt werden.

The DR/800 Series Colorimeters can store the calibration
information needed to read prepared samples from up to ten
different user-entered programs. To create a new, user-entered
program, you will need a blank and prepared standards or the
correct absorbance readings for each standard. The prepared
standards are made with standard solutions of the parameter (i.e.
analyte). Up to twelve concentrations of standards, including a
zero concentration standard, may be used.

The absorbances of the prepared standards must be different from
one another. If the colorimeter detects a duplicate, it will beep
and ignore the latest reading.

Using a previously entered method’s program number erases all
the previously entered information stored under that
program number.

While creating a user-entered program, the colorimeter remains
on for four hours following any keypress. If more than four hours
pass between keypresses, the instrument will power down. All
data which was entered, but not yet stored, will be deleted. The
user-entered program must be re-entered from the beginning.

31

SECTION 4, continued

4.1 User-Entered Programs

The instrument allows storage of up to ten user-entered programs
(101–110) and up to 113 Hach programs. A minimum of two data
points are required for the instrument to recognize and accept a
user-entered program.

• Program numbers 101 through 110 are reserved for storing

user-entered programs.

• The maximum number of data points that can be entered for a

method is 12. After the twelfth standard (1 through 12) is
accepted, the instrument stores the method and will not
accept any more data, but will allow the user to review the
data already entered.

Before entering a calibration, determine the optimum
wavelength, timing sequences (if any), and the workable range of
the method.

4.2 Calibration Curves

Calibration curves may have positive or negative slopes, but they
must be based on absorbance (% transmittance not allowed) and
must pass through the origin that represents zero concentration.

It is important that the standards adequately describe the curve
over the range of interest. Because this is largely dependent on
the shape of the curve, it may be necessary to prepare a
preliminary curve using extra data points to help select the
appropriate standards.

If the curve is linear, only two concentration data points are
needed. For example, standards with a zero absorbance and a
standard with 1.000 absorbance are appropriate. If the curve is
nonlinear, additional data points are needed to achieve good
accuracy. Up to 12 data points can be entered for a single
calibration curve.

4.3 User-entered Program Information for Bleaching Chemistries

Although the majority of colorimetric test procedures produce a
higher absorbance (i.e. deeper color) as the concentration of the
parameter being measured increases, some tests do the opposite.
These bleaching chemistries (fluoride is one example) produce a

32

SECTION 4, continued

lighter color at increasing concentrations. The zero concentration
standard is usually produced by combining deionized water with
the reagents. Commonly this solution is used to zero the
instrument as in Step step 14 of Section 4.4 Creating a New User-
entered Program.

Once the zero is entered, the prepared standards must be read
from lightest to darkest. In the case of bleaching chemistries, the
absorbance values reported by the colorimeter may be negative.

Even when your test produces a lower absorbance (lighter color)
with increasing concentration, the prepared standards must be
read by the colorimeter in the order of increasing absorbance (i.e.,
from colorless or the palest color, to the deepest color). The
instrument will not accept standards read out of order.

4.4 Creating a New User-entered Program

Use the step-by-step instructions below to enter a new user­entered program into instrument memory. Terminate at any point
(before the program is stored) by pressing the

EXIT key until the

display is blank. The colorimeter will not retain any of the
entered data.

1. Press the

2. Press the

I/O key to turn on the instrument.

SETUP key. The display will show SETUP in the

upper-left and the down-arrow icon in the lower-right.
Available action functions are also shown.

3. Press the down

4. Press the up

5. Press the

ARROW key until USER is displayed.

ARROW key if the display goes past USER.

ENTER key. Four horizontal lines (numeric entry

display) will be displayed.

6. Select a program number from 101 through 110 by pressing

the corresponding digit key. The number will appear in
the display.

Note: Press CE to correct errors.

7. Press ENTER. A wavelength and nm will be displayed.

33

SECTION 4, continued

• If the wavelength is correct as displayed, skip to

Step step 8.

• Some instrument models can use different wavelengths.

If a different wavelength is preferred, proceed as follows:

a. Press

ENTER. A flashing question mark will be displayed

in the lower-right corner.

b. Press either

ARROW key until the preferred wavelength is

displayed.

c. Press

ENTER to accept the displayed wavelength. The

down-arrow icon will be displayed.

8. Press the

down ARROW key to move to the RES (resolution)

option. One to four zeros, a decimal point if needed, and the
units of concentration may be modified here.

• If the displayed resolution and units are correct, skip to

step step 9.

• If the displayed resolution or units are incorrect for your

test, proceed with the following:

a. Press

displayed.

ENTER. A flashing question mark will be

b. Press either

ARROW key until the preferred resolution

and concentration units are displayed. The available
options are:

0.000 0.00 0.0 0

0.000 Pg/L 0.00 Pg/L 0.0 Pg/L 0 Pg/L

0.000 mg/L 0.00 mg/L 0.0 mg/L 0 mg/L

0.000 g/L 0.00 g/L 0.0 g/L 0 g/L

c. Press

9. Press the down

ENTER. The question mark will disappear.

ARROW key to scroll to STD. STD and the

number of the standard (i.e., 1 is shown for the first standard,
2 for the second, etc.) will be shown on the lower portion of
the display.

34

SECTION 4, continued

10. Press ENTER. Four horizontal lines (denoting numeric entry)

will be displayed.

11. Enter the standard’s concentration, using the numeric entry

keys (the # icon will be illuminated on the display).

Note: Press the CE key to correct errors.

12. Press the ENTER key. The concentration will be displayed.

Note: A beep means that the concentration is a duplicate of a previous

standard or the concentration is too high for the selected resolution.
Repeat step step 11 with a different concentration and continue.

13. Press the down ARROW key. ABS will be displayed followed

by the number of the standard.

14. The colorimeter requires one zero be entered in this

procedure; the

ZERO action icon will appear in the lower

portion of the display. Place a blank into the cell holder and
press the
disappear, across the display. The

ZERO key. Four horizontal lines will appear, then

READ action icon will

appear in the lower portion of the display.

Note: If necessary, the colorimeter can be re-zeroed. The most recently

entered zero will be used for subsequent readings.

15. Prepare the standards using the same reagents and procedure

used to test samples.

16. Place the prepared standard into the cell holder.

17. Press the

Note: Or, press the ENTER key to input an absorbance value or change

the value read by the instrument. Use the numeric keys to enter the
value then press the ENTER key.

Note: A beep indicates that the absorbance is a duplicate of a previously

entered standard or that it falls between two previous standards.
Repeat steps step 15 through 17. with the correct standard, or press
the up ARROW key and repeat steps 9. through 17. with a correct,
prepared standard and blank.

READ key. An absorbance value will be displayed.

18. Press the down ARROW key to advance to the next standard.

19. Repeat step 9 through step 18 for all remaining standards.

35

SECTION 4, continued

20. Press the EXIT key once. STORE ? will be displayed.

21. Press the

ENTER key to store the new method in the

instrument’s memory.

4.5 Reviewing and Editing User-Entered Programs

Note: When a user­entered program is edited
and stored, all stored data
associated with that
program is erased.

All method information previously stored by the operator can be
reviewed and changed to add, delete, or modify data points. At
any point during the editing function, the operator can terminate
the procedure and exit by pressing the

EXIT key. No changes to the

program will occur.

Because the standards must be read in the order of increasing
absorbancy, data points may not be inserted into the middle of an
existing user-entered program.

To review and edit previously stored user-entered programs:

1. Press the

2. Press the

I/O key to turn the instrument on.

SETUP key.

3. Scroll to the

USER option and press ENTER.

4. Enter the program number of the method to review or edit

and press the

5. Scroll through the calibration information using the

keys. To avoid making changes, press the

6. To edit the data shown on the display, press

necessary changes, then press the

ENTER key.

ARROW

EXIT key.

ENTER. Make

ENTER key to return to

reviewing the data.

7. Press

8. Press

EXIT once. STORE? will be displayed.

ENTER to store the program.

36

SECTION 4, continued

4.6 Erasing User-entered Programs

Note: When a user­entered program is erased,
all stored data associated
with that program is
also erased.

User-entered programs are automatically deleted when another
user-entered program is entered and stored in the previously
entered method’s storage number (101–110). They also may be
erased from the instrument memory as follows:

1. Press the

2. Press the

3. Scroll to the

I/O key to turn the instrument on.

SETUP key.

USER option and press ENTER.

4. Enter the program number of the method to be erased and

then press

ENTER.

5. Scroll to the concentration data for STD 1 using the down

ARROW key. Press ENTER.

6. Press

7. Press the

CE. Press ENTER.

EXIT key. ERASE? will be displayed.

8. Press the

ENTER key to erase the method or the EXIT key to

retain it in memory.

37

38

SECTION 5 DATA RECALL AND STORAGE

To store sample data, press STORE after the sample measurement
is displayed. Data must be stored if you wish to recall it later for
review, downloading or printing. The following information is
stored for each sample:

• instrument model

• instrument serial number

• chemical form

• concentration

• units

• absorbance

• %T

5.1 Recalling Data

• date

• time

• sample number

• program number

After the
shown in the lower-right portion of the display. In the center of
the display, the next available storage number will appear. If this
storage location is acceptable, press

To select an empty storage number (between 1 and 99), use the

ARROW keys to scroll to the desired number or enter the desired

number with the numeric keys. Press
instrument will store the data, then revert back to the
measurement display.

STORE key is pressed, a flashing question mark icon is

ENTER to accept it.

ENTER to accept. The

To recall data stored in the colorimeter, press the RECALL key.

Use the
numbers containing stored sample reading data (of the available
storage numbers 1-99) are displayed in the RECALL menu. For

ARROW keys to scroll through the stored data. Only data

39

SECTION 5, continued

example, if the user has stored data into storage numbers 6, 10
and 15, those are the only accessible numbers in the Recall
option. Available storage numbers are not shown as a Recall
option because no data has been stored for recall purposes.

When a number of sample readings have been stored and a
specific reading must be recalled, proceed as follows:

1. Press the

2. Press the

I/O key to turn the colorimeter on.

RECALL key to access the RECALL Menu.

3. A beep indicates that no data is presently stored.

4. Press the number key(s) or either

ARROW key on the keypad

to scroll to the desired sample number.

5. Press the

ENTER key. The stored reading will be displayed.

6. A beep indicates that no data is stored as that sample number.

7. While the stored reading is displayed, press the

TIME key to display the date or time the reading was

the
stored. Press the

CONC key to display the concentration data.

8. If other stored data is desired, press either

DATE key or

ARROW key until

the data is displayed.

9. Press

EXIT to terminate data recall.

5.2 Erasing All Stored Data

Stored data can be erased and the memory of the instrument
cleared using the procedure that follows.

1. Press the

2. Press the

3. Scroll using the down

appears on the display.

4. Press the

the instrument.

I/O key to turn the colorimeter on.

SETUP key to enter the SETUP menu.

ARROW key until ERASE and ALL

ENTER key to confirm this selection with

40

SECTION 5, continued

A flashing question mark icon will appear in the lower-right
portion of the screen as an additional step to avoid erasing all data
if the choice was made erroneously.

5. Confirm this action by pressing the

not the desired action, press the

After the

ENTER key is pressed, the instrument automatically

ENTER key or, if this is

EXIT key.

erases all stored data and returns to the last used program.

41

42

SECTION 6 PRINTING AND DATA TRANSFER

6.1 Data Transfer Adapter Basics

The optional Data Transfer Adapter (DTA) utilizes infra-red
technology to receive data from the DR/800 Series Colorimeter
and then transfer the signal into RS232 format. The DTA then
sends the RS232 signal to a printer or personal computer.

The sleeve design makes the adapter compact, easy to use, and
robust. Samples may be tested while the adapter is in place and
the information may be immediately printed or downloaded to a
computer. Data stored in the instrument memory may also be
printed or downloaded at any time.

6.1.1 Attaching the Data Transfer Adapter

The Data Transfer Adapter is designed to fit on the instrument in
the same way the instrument cap does. To install the DTA, simply
remove the instrument cap, then slide the DTA onto the
colorimeter body until it snaps into place. The DTA design allows
the instrument cap to be used as a light shield. See Figure 8
Installing the Data Transfer Adapter.

Figure 8 Installing the Data Transfer Adapter

43

SECTION 6, continued

6.2 RS232 Connections

The RS232 receptacle on the Data Transfer Adapter connects
with a 9-pin Sub-D connector (see Figure 9 RS232 Connection).
A suitable RS232 cable is listed under Optional Accessories in
REPLACEMENT PARTS AND ACCESSORIES on page 57.

The RS232 interface output is an eight-bit data word plus one
stop bit and no parity with a baud rate of 1200. It can
communicate with either a serial printer or a serial
communication port on a computer.

Press the
Section 6.3 Sending Data to a Printer or Computer
for instructions.

With the use of a serial-to-parallel converter, the data string
transmitted from the colorimeter prints on any compatible
parallel printer of the type normally used with IBM
compatible applications.

All RS232 connections are made using the serial
DTA. This port uses an industry standard 9-pin connector. See
Figure 9 RS232 Connection.

Figure 9 RS232 Connection

PRINT key to send data to the printer or computer. See

I/O port on the

Note: For optimum performance and ESD protection, use a five-

conductor shielded cable. Use a metal shell for the printer or CRT
terminal connector, and connect the shield of the cable to the metal
shell and to the sleeve (signal ground) of the RS232 plug.

44

SECTION 6, continued

6.2.1 Setup and Use of the Printer

Follow the manufacturer's instructions when configuring the
printer for compatibility with the colorimeter.

Pressing

PRINT manually starts the printing, and pressing the EXIT

key stops the printing (refer to Section 6.3 Sending Data to a
Printer or Computer).

Connect the DTA to a printer using an appropriate cable.

Tabl e 4 and Table 5 show the proper pin connections for 9-pin
computer cables and for 25-pin printer cables. Use of cables that
do not match the pin information given may cause
undesirable operation.

Table 4 Standard 9-pin to 9-pin Computer Cable

DR/800 Series 9-pin

Connector Socket

Pin Signal Name Pin Signal Name

2 RXD 3 TXD

3 TXD 2 RXD

4 DTR no connection —

Computer 9-pin D Connector, plug

5 GND 5 GND

6 DSR no connection —

7 RTS 8 CTS

8 CTS 7 RTS

Table 5 Standard 9-pin to 25-pin Printer Cable

DR/800 Series 9-pin

Connector Socket

Pin Signal Name

2 RXD no connection —

3 TXD 3 RXD

4 DTR no connection —

5 GND 7 GND

6 DSR 20 DTR

7 RTS no connection —

Computer 9-pin D Connector, plug

Pin Signal Name

45

SECTION 6, continued

Table 5 Standard 9-pin to 25-pin Printer Cable

DR/800 Series 9-pin

Connector Socket

Pin Signal Name

8CTS 20 DTR

To print, the communication parameters (baud rate, data bits and
parity) of the instrument and the printer must match.

6.2.2 Connecting to a Personal Computer

Connect the colorimeter to a personal computer (PC) with the
computer interface cable (Cat. No. 48129-00) listed under
REPLACEMENT PARTS AND ACCESSORIES on page 57. The
cable provides a direct link between the colorimeter and the 9-pin
D connector used for the serial port on most personal computers.
If your computer has a 25-pin D connector, use a 9-pin to 25-pin
adapter (available at most computer supply stores).

Use a communications software, such as HachLink™ Software
(Cat. No. 49665-00) to collect data from the instrument.
HachLink is a Windows-based application that allows a personal
computer to capture data from several Hach instruments,
including the DR/800 Series Colorimeters.

Computer 9-pin D Connector, plug

Pin Signal Name

The captured data can be stored in a text file as a spread-sheet
compatible format or as free-format text. Data captured in the
spreadsheet format is easily transferred into most spreadsheet

®

programs (i.e., Excel

, Microsoft Works®, Lotus 123®) for

graphing and reporting.

To install and run HachLink™ Software, the computer and
software must meet the following minimum requirements:

• PC with a 486/100 MHz or higher processor

• 32 MB RAM

• Hard drive with at least 20 MB free space

• 3½ inch floppy disk drive or CD-ROM drive

• VGA graphics with 640 x 480 or higher resolution,

256 colors

46

SECTION 6, continued

• Mouse or other pointing device

• 9-pin serial port (or 25-pin serial port with 9-pin adapter)

• Windows 95, 98, 2000, or NT 4.0 operating system

To transfer data, the communication parameters (baud rate, data
bits and parity) of the instrument and the computer must match.
Once the communication link is established, press
data to the computer.

6.3 Sending Data to a Printer or Computer

A permanent record of test results may be obtained using the
DTA RS232 serial output to drive a printer or by transferring the
data to a computer for storage. Data displayed on the instrument
screen may be sent to an accessory printer or computer by
attaching the DTA to the instrument and pressing the
The data can be recalled from memory or the current sample
reading. Only the information shown on the display will
be printed.

PRINT to send

PRINT key.

6.3.1 Sending Currently Displayed Data

To transfer currently displayed data:

1. Remove the instrument cap and slide the DTA onto the

instrument until snug.

2. Make sure the DTA is properly connected to the computer or
printer. See Section 6.2 RS232 Connections.

3. Press the
while the data is being transmitted to the DTA.

PRINT key. Four dashes and PRINT are displayed

47

SECTION 6, continued

6.3.2 Sending Recalled Data

To transfer recalled data:

1. Remove the instrument cap and slide the DTA onto the

instrument until snug.

2. Make sure the DTA is properly connected to the computer or
printer. (See Section 6.2 RS232 Connections.)

3. Recall the data to be transferred (see Section 5.1 Recalling
Data on page 39).

4. When sample data is displayed, press the
horizontal lines and
transmitted to the DTA.

6.3.3 Sending All Stored Data

All data stored in memory may be sent to a printer or computer
via the

1. Remove the instrument cap and slide the DTA onto the
instrument until snug.

2. Make sure the DTA is properly connected to the computer or
printer. (See Section 6.2 RS232 Connections.)

3. Press the

4. Scroll, using the down

5. Press the

PRINT. All stored data is now sent to the DTA. After the data

has been successfully sent, the instrument defaults to the last
used program.

PRINT key. Four

PRINT are displayed while the data is

SETUP menu option as follows:

SETUP key.

ARROW key, to the PRINT option.

ENTER key when the word ALL is displayed above

Transferred data will include the following information:

• instrument model number

• instrument serial number

• instrument software version

• date

48

SECTION 6, continued

• time

• program number

• sample number

• concentration

• units

• chemical form

• Overrange errors (limit)

• absorbance

• %T

Figure 10 Printed Data Format

49

50

SECTION 7 MAINTENANCE

7.1 Cleaning the Colorimeter

Use a damp cloth to wipe the outside of the colorimeter
enclosure. Wipe up spills promptly. Use cotton swabs to clean
and dry the sample compartment if any spillage occurs.

Keep the colorimeter and sample cells clean at all times. Use a
lens tissue or a soft, lint-free cloth (that will not leave an oil film)
to wipe out the sample cell.

7.1.1 Cleaning the Data Transfer Adapter

Little cleaning is required of this adapter. Clean the outside and
inside with a barely damp cloth. Wipe up spills promptly.

7.1.2 Sample Cells

Clean sample cells with detergent, rinse several times with tap
water, and then rinse thoroughly with deionized water. Some cells
may require acid washing or other special cleaning procedures.
Refer to the Procedures Manual for additional information. Rinse
sample cells used with organic solvents (chloroform, benzene,
toluene, etc.) with acetone before the detergent wash, and again
as a final rinse before drying.

7.2 Replacement Instructions

To prevent static electricity damage to the instrument, always turn
the instrument off before removing the batteries.

7.2.1 Battery Replacement

When the LOW BATTERY icon appears in the display the
batteries must be replaced or recharged as soon as possible to
ensure proper instrument performance. Turn the instrument off
before removing the battery compartment door.

The correct date and time may need to be reentered after battery
replacement. See Section 2.3 Setting the Date and Time.

See Section 2.1 Battery Installation for complete
installation instructions.

51

52

SECTION 8 TROUBLESHOOTING

8.1 Introduction

Correcting problem conditions with the DR/800 Series
Colorimeters in the field is limited to responding to the error
messages presented in the display. Other problems must be
handled by a Hach technician at a service center. Refer to REPAIR
SERVICE. Do not attempt to service anything other than the
battery; there are no other field-serviceable parts. Opening the
instrument case will void the warranty.

8.1.1 Error Codes

This feature identifies the problem area or areas when an error
indication occurs during instrument operation. When an error
occurs,
which refers to a diagnostic error code. Refer to Table 6 below to
determine the error cause and possible corrective actions. Turn
the instrument off, then on, to restore the instrument to operation.

ERROR displays on the screen, followed by a number

ERROR Code

Number

1 Unconfigured instrument Contact Hach Instrument Service Department

2 Could not read program data Contact Hach Instrument Service Department

3 Could not write program data Contact Hach Instrument Service Department

4 Measurement battery error Replace instrument batteries

5 Measurement A/D error Contact Hach Instrument Service Department

6 Measurement offset error Check to be sure instrument light shield (cap) is

7 Measurement low light error Check for light path blockage

8 Measurement over-range

Table 6 Error Codes

Error Code Type Corrective Action

correctly installed

Zero is out of instrument range; dilute to
within range

Contact Hach Instrument Service Department

Make sure instrument cap is properly installed

error

Contact Hach Instrument Service Department

53

SECTION 8, continued

8.1.2 Beeper/Error Icon

When a key is pressed that calls for the instrument to perform a
function that is not available at that time, the beeper is activated
once and the error icon appears on the display. Each time the
unacceptable command is entered, one beep sounds.

If an unavailable program number is entered, the beeper also
sounds. Program numbers must range from 101 to 110 (user
programs) and 1 to 100 (Hach programs). Entering a number
other than these results in the beeper sound and the error icon
briefly illuminates. After this beep sounds, re-enter the
proper number.

8.1.3 Concentration Out of Range

An out-of-range condition is indicated by the illuminated LIMIT
icon. It means the sample concentration exceeds the range of the
programmed calibration. Make sure the test procedure is followed
correctly, dilute the sample (for over range samples) and rerun the
test. Each Hach test has an upper concentration value that defines
the program range. Measurements beyond that range
are unreliable.

8.1.4 Low Battery

The instrument continuously monitors battery voltage. If the
battery voltage falls to a level which indicates less than ten
percent battery life remains, the instrument automatically warns
the operator by displaying the
batteries as soon as possible for most reliable
instrument performance.

LOW BATTERY icon. Replace the

54

GENERAL INFORMATION

At Hach Company, customer service is an
important part of every product we make.

With that in mind, we have compiled the following
information for your convenience.

55

56

REPLACEMENT PARTS AND ACCESSORIES

REQUIRED APPARATUS

Description Unit Cat. No.

Adapter, Assembly, COD............................................................................each ........... 4846400

Batteries, Alkaline AA .............................................................................pkg/4 ...........1938004

Manual Set, DR/890,

includes Instrument & Procedure Manual & Binder ...............................each ........... 4847077

Manual Set, DR/850,

includes Instrument & Procedure Manual & Binder ...............................each ........... 4845077

Manual Set, DR/820,

includes Instrument & Procedure Manual & Binder ...............................each ........... 4844077

Sample Cell, 25 x 95 mm 10-20-25 mL....................................................pkg/6 ........... 2401906

Sample Cell, 1 cm/10 mL, pk/2.................................................................pkg/2 ...........4864302

OPTIONAL ACCESSORIES

Adapter, Data Transfer, RS232, includes 48129-00 cable ..........................each ...........4849000

Cap, Sample Cell, for 25 x 95 mL cell....................................................pkg/12 ........... 2401812

Carrying Case, DR/800 Series Colorimeter, hard-sided .............................each ...........4942500

Carrying Case, DR/800 Series Colorimeter, soft-sided w/shoulder strap...each ...........2722000

Carrying Case, Portable Laboratory............................................................each ...........4943000

Computer Interface Cable, 6 ft., for use with the DTA ...............................each ...........4812900

DR/Check™ ABS Standards......................................................................... set ........... 2763900

HachLink Software .....................................................................................each ...........4966500

Instrument Cap ............................................................................................each ...........4943100

57

58

How To Order

By Telephone: By Mail:

6:30 a.m. to 5:00 p.m. MST
Monday through Friday
(800) 227-HACH
(800-227-4224)

By FAX: [phone]

Ordering information by E-mail: [e-mail]

Hach Company
P.O. Box 389
Loveland, CO 80539-0389
U.S.A.

Information Required

• Hach account number (if available) • Billing address

• Your name and phone number • Shipping address

• Purchase order number • Catalog number

• Brief description or model number • Quantity

Technical and Customer Service (U.S.A. only)

Hach Technical and Customer Service Department personnel
are eager to answer questions about our products and their use.
Specialists in analytical methods, they are happy to put their
talents to work for you.
Call 1-800-227-4224 or E-mail [e-mail].

International Customers

Hach maintains a worldwide network of dealers and distributors.
To locate the representative nearest you, send E-mail to

intl@hach. com or contact:

In Canada, Latin America, Africa, Asia, Pacific Rim:

Telephone: [phone]; FAX: [phone]

In Europe, the Middle East, or Mediterranean Africa:
HACH Company, c/o

Dr. Bruno Lange GmbH
Willstätterstr. 11
D-40549 Düsseldorf
Germany
Telephone: +49/[0]211.52.88.0
Fax: +49/[0]211.52.88.231

59

Repair Service

Authorization must be obtained from Hach Company before
sending any items for repair. Please contact the HACH Service
Center serving your location.

In the United States:

Hach Company
100 Dayton Avenue
Ames, Iowa 50010
[phone] (U.S.A. only)
Telephone: [phone]
FAX: [phone]

In Canada:

Hach Sales & Service Canada Ltd.
1313 Border Street, Unit 34
Winnipeg, Manitoba
R3H 0X4
[phone] (Canada only)
Telephone: [phone]
FAX: [phone]
E-mail: [e-mail]

In Latin America, the Caribbean, the Far East, the
Indian Subcontinent, Africa, Europe, or the Middle East:

Hach Company World Headquarters
P.O. Box 389
Loveland, Colorado, 80539-0389
U.S.A.
Telephone: [phone]
FAX: [phone]
E-mail: [e-mail]

60

Warranty

Hach Company warrants this product to the original purchaser against

any defects that are due to faulty material or workmanship for a period of
one year from date of shipment.

In the event that a defect is discovered during the warranty period, Hach
Company agrees that, at its option, it will repair or replace the defective
product or refund the purchase price, excluding original shipping and
handling charges. Any product repaired or replaced under this warranty
will be warranted only for the remainder of the original product warranty
period.

This warranty does not apply to consumable products such as chemical
reagents; or consumable components of a product, such as, but not limited
to, lamps and tubing.

Contact Hach Company or your distributor to initiate warranty support.
Products may not be returned without authorization from Hach Company.

Limitations

This warranty does not cover:

• damage caused by acts of God, natural disaster, labor unrest, acts of war
(declared or undeclared), terrorism, civil strife or acts of any
governmental jurisdiction

• damage caused by misuse, neglect, accident or improper application
or installation

• damage caused 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 Company

• freight charges on expedited or express shipment of warranted parts
or product

• travel fees associated with on-site warranty repair

This warranty contains the sole express warranty made by Hach Company
in connection with its products. All implied warranties, including without
limitation, the warranties of merchantability and fitness for a particular
purpose, are expressly disclaimed.

Some states within the United States do not allow the disclaimer of
implied warranties and if this is true in your state the above limitation may
not apply to you. This warranty gives you specific rights, and you may
also have other rights that vary from state to state.

This warranty constitutes the final, complete, and exclusive statement of
warranty terms and no person is authorized to make any other warranties
or representations on behalf of Hach Company.

Limitation of Remedies

The remedies of repair, replacement or refund of purchase price as stated
above are the exclusive remedies for the breach of this warranty. On the
basis of strict liability or under any other legal theory, in no event shall
Hach Company be liable for any incidental or consequential damages of
any kind for breach of warranty or negligence.

61

62

CERTIFICATION

Hach Company certifies this instrument was tested thoroughly, inspected
and found to meet its published specifications when it was shipped from
the factory.

The DR/800 Series Colorimeter has been tested and is certified as
indicated to the following instrumentation standards:

EN 60825-1: LEDs used in this product are Class 1

Immunity:

EN 50082-1 “1997”(Generic Immunity Standard) per 89/336/EEC
EMC: Supporting test records by Hach Company, certified compliance

by Hach Company.

Required Standard/s include:

EN 61000-4-2 (IEC 1000-4-2) Electro-Static Discharge

EN 61000-4-3 (IEC 1000-4-3) Radiated RF Electro-Magnetic Fields

ENV 50204 Radiated Electro-Magnetic Field from Digital Telephones

Emissions:

Per 89/336/EEC EMC: Supporting test records by Intellistor O.A.T.S.,
(NVLAP #0369) certified compliance by Hach Company.

Required European Standard/s include:

EN 55011 (CISPR 11) Emissions, Class B Limits

Additional Emissions Standard/s include:

CANADIAN INTERFERENCE-CAUSING EQUIPMENT
REGULATION, IECS-003, Class A:

Supporting test records by Intellistor O.A.T.S., certified compliance by
Hach Company.

This Class A digital apparatus meets all requirements of the Canadian
Interference-Causing Equipment Regulations.

Cet appareil numérique de la classe A respecte toutes les exigences du
Règlement sur le matériel brouilleur du Canada.

63

CERTIFICATION, continued

FCC PART 15, Class “A” Limits:

Supporting test records by Intellistor O.A.T.S., certified
compliance by Hach Company.

This device complies with Part 15 of the FCC Rules. Operation is
subject to the following two conditions:

(1) This device may not cause harmful interference, and (2) this
device must accept any interference received, including
interference that may cause undesired operation.

Changes or modifications to this unit not expressly approved by
the
party responsible for compliance could void the user's authority
to
operate the equipment.

This equipment has been tested and found to comply with the
limits for a Class A digital device, pursuant to Part 15 of the FCC
Rules. These limits are designed to provide reasonable protection
against harmful interference when the equipment is operated in a
commercial environment. This equipment generates, uses, and
can radiate radio frequency energy and, if not installed and used
in accordance with the instruction manual, may cause harmful
interference to radio communications. Operation of this
equipment in a residential area is likely to cause harmful
interference, in which case the user will be required to correct the
interference at his own expense. The following techniques of
reducing the interference problems are applied easily.

1. Remove power from the Colorimeter by removing one of its

batteries to verify that it is or is not the source of the
interference.

2. Move the Colorimeter away from the device receiving the

interference.

3. Reposition the receiving antenna for the device receiving

the interference.

4. Try combinations of the above.

64

65