Hach DR/2010 Manual de usuario

46644-88

DR/2000 and DR/2010 Spectrophotometer

Wavelength Calibration Adjustment

Purpose

These instructions provide a step-by-step procedure for performing a wavelength calibration

adjustment for the DR/2000 Spectrophotometer (software versions 2.0, 2.2, 3.0 and greater) and

DR/2010 Spectrophotometer. Do not perform this procedure if your instrument has 1.261 or 1.27

software! Perform the adjustment any time the lamp assembly (Cat. No. 46644-00) is replaced

and periodically for optimum performance. The adjustment assures the best possible accuracy

and repeatability. Use the Calibration Filter Assembly (Cat. No. 46646-00) to make the

adjustment.

Start by following the three steps below. Then choose the step-by-step instructions that apply to

the specific instrument and software you are using to finish the calibration adjustment.

1. If lamp replacement is necessary, see the Lamp Replacement instructions shipped with

the lamp.

2. Determine which software version applies to the spectrophotometer being adjusted. For the

DR/2010 Spectrophotometer, the software version will briefly appear after the instrument is

turned on. For the DR/2000 Spectrophotometer, different messages will appear, depending

on the software in the instrument (see Table 1):

Select the appropriate wavelength calibration adjustment procedure on the following pages

and continue.

Table 1 DR/2000 Messages Indicating Software Versions

DR/2000 Software Version Display

2.0 or 2.2 If the first display is Method #?,pressSHIFT CONFIG/METH,

then enter 888 with the numeric keys. Press READ/ENTER.The

display will show V2.0 or V2.2.

3.0 and greater Self-Test V3.X

1.261 and 1.27 DO NOT perform the calibration adjustment. Monochromator

calibration could be permanently lost (Hach Service cannot restore

the calibration).

Wavelength Calibration Adjustment, continued

DR/2010 Spectrophotometer Procedure

1. Empty the cell

compartment and close the

cover. Adjust the wavelength

to about 850 nm.

2. Press SHIFT SETUP/2 to

enter the Setup Menu. Press

the DOWN ARROW twice to

access Lamp:.Ifin

Momentary mode, press

ENTER then UP ARROW, then

ENTER again. If in Constant-

On mode, go to step 3.

3. Scroll to the Adjust nm

option with the UP ARROW

key and press ENTER.The

display will show:

Peak Filter:

4. Press: ENTER.The

display will show:

Zero Required

5. Press: ENTER

The display will show:

100 %T Peak Filter

6. Insert the calibration

filter into the cell

compartment with the tab

facing right. Close the cover.

7. Slowly adjust the

wavelength by turning the

control counterclockwise.

Record the wavelength

where the % transmittance

reading is greatest.

8. Turn the wavelength

control clockwise so the

wavelength is at least 10 nm

higher than the wavelength

value recorded in step 7.

850 nm

Wavelength Calibration Adjustment, continued

9. Slowly turn the

wavelength control

counterclockwise. Watch the

%T values displayed. Stop

exactlyonthe

highest transmittance.

10. Press: ENTER

The display will show:

Are You Sure?

11. Press: ENTER

The calibration adjustment

will occur automatically. If

successful, the display will

show Completed and then

Adjust nm. If you cannot

obtain a good adjustment,

contact the Hach Service

center serving you.

12. To use the factory

default setting, press SHIFT

SETUP

, then press UP

ARROW twice.

The display shows Adjust

nm:.PressENTER.PressUP

ARROW once to display

Default Setup:,thenENTER.

The display shows

Completed.PressEXIT twice

to get the Enter Program #

prompt.

DR/2000 Spectrophotometer Procedure, Version 3.0 and Greater

1. Press:

SHIFT CONFIG/METH

If CONSTANT ON is

displayed, go to step 2.If

MOMENTARY is displayed,

press READ/ENTER to toggle

to CONSTANT ON.

1. Do not do this calibration if

your instrument has version

1.261 or 1.27 software!

2. Press CONFIG/METH

twicetoreturntothe

METHOD #? prompt.

3. Press SHIFT % T to select

the %T mode. The display

will read:

4. With the cell

compartment empty and the

cover closed, rotate the

wavelength dial until the

small display shows:

850 nm

To use factory

default setting, see

instructions below

this box.

850 nm

Wavelength Calibration Adjustment, continued

5. Press: CLEAR/ZERO

The display will show:

100.0 %T

Note: If the display does not

read within ±0.3 %T, press

CLEAR/ZERO again.

6. Place the Calibration

Filter into the cell holder.

Close the cover.

Note: Alignthetabwiththe

notch in the cell holder opening.

7. Slowly turn the

wavelength dial counter-

clockwise (decreasing

wavelength). Record the

wavelength where the %T

is highest.

8. Turn the wavelength

control clockwise so the

wavelength is at least 10 nm

higher than the wavelength

value recorded in step 7.

9. Slowly turn the

wavelength control

counterclockwise. Watch the

%T values displayed. Stop

exactly on the highest

transmittance.

10. Press SHIFT

CONFIG/METH and scroll

with the Arrow keys until

the display shows:

ADJUST nm

11. Press: READ/ENTER

The display will show:

ARE YOU SURE?

Press READ/ENTER again.

If the wavelength calibration

adjustment was successful,

the display will show:

COMPLETED

with 808 in the nm field and

then: ADJUST nm

If you cannot obtain a good

adjustment, contact the Hach

Service center serving you.

12. Press CONFIG/METH

three times to return the

display to:

METHOD #?

Wavelength Calibration Adjustment, continued

DR/2000 Spectrophotometer Procedure, Versions 2.0 and 2.2

1. Press:

SHIFT CONFIG/METH

Scroll with the Arrow keys

until the display shows:

CONSTANT ON

Note: Do not do this calibration

if your instrument has 1.261 or

1.27 version software!

2. Press READ/ENTER three

times to accept the mode

choice and return to the

METHOD #? prompt.

3. Press SHIFT %T to select

the %T mode. The display

will show:

4. With the cell

compartment empty and the

cover closed, rotate the

wavelength dial until the

small display shows:

850 nm

5. Press:

CLEAR/ZERO

The display will show:

100.0% T

Note: If the display does not

read within ±0.3 %T, press

CLEAR/ZERO again.

6. Place the Calibration

Filter into the cell holder.

Close the cover.

Note: Align the key with the

notch in the cell holder opening.

7. Slowly turn the

wavelength dial counter-

clockwise (decreasing

wavelength). Record the

wavelength where the %T

is highest.

8. Turn the wavelength

control clockwise so the

wavelength is at least 10 nm

higher than the wavelength

value recorded in step 7.

850 nm

Wavelength Calibration Adjustment, continued

9. Slowly turn the

wavelength control

counterclockwise. Watch the

%T values displayed. Stop

exactlyonthe

highest transmittance.

10. Press:

SHIFT CONFIG/METH

Enter 888 with the

numeric keys.

11. Press READ/ENTER and

immediately key in 123and

READ/ENTER.

If the calibration was

successful, the display will

show 808 in the nm field

with the METHOD #?

prompt.

If you cannot obtain a good

adjustment, contact the Hach

Service center serving you.

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