Hach DR/2000 - User Manual

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).

Hach DR/2000 Specifications

General

Type	Spectrophotometer
Light Source	Tungsten lamp
Detector Type	Silicon photodiode
Photometric Range	0 to 2.5 Abs
Photometric Resolution	0.001 Abs
Power Supply	AC adapter
Operating Temperature	0 to 45 °C
Measurement Range	0 to 2.5 Abs

Summary

Wavelength Calibration Adjustment

Purpose of Wavelength Calibration

Explains the objective and importance of the calibration for DR/2000 and DR/2010 Spectrophotometers.

Initial Steps and Version Identification

Covers lamp replacement, determining software version, and notes for specific software versions.

DR;2010 Spectrophotometer Procedure

DR;2010 Initial Setup and Adjustment

Details initial instrument setup, accessing menus, and performing the wavelength adjustment steps.

DR;2010 Calibration Completion

Covers final steps for completing the DR/2010 wavelength adjustment and using factory default settings.

DR;2000 Spectrophotometer Procedure, Version 3.0 and Greater

DR;2000 v3.0+ Setup and Initial Steps

Outlines initial steps for DR/2000, including mode selection and %T mode activation.

DR;2000 v3.0+ Wavelength Adjustment

Details setting the wavelength to 850 nm and performing the calibration adjustment process.

DR;2000 v3.0+ Finalizing Adjustment

Covers adjusting for highest transmittance, confirming, and completing the calibration process.

DR;2000 Spectrophotometer Procedure, Versions 2.0 and 2.2

DR;2000 v2.0;2.2 Setup and Mode Selection

Describes initial setup, ensuring CONSTANT ON mode, and selecting %T mode.

DR;2000 v2.0;2.2 Wavelength Calibration

Details setting wavelength to 850 nm and using the calibration filter for adjustment.

DR;2000 v2.0;2.2 Completing Adjustment

Covers final adjustment steps, confirmation, and successful calibration display.