Hach DR/2000 Instruction Sheet

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
2. Determine which software version applies to the spectrophotometer being adjusted. For the
Select the appropriate wavelength calibration adjustment procedure on the following pages
and continue.
the lamp.
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):
Table 1 DR/2000 Messages Indicating Software Versions
DR/2000 Software Version
2.0 or 2.2
3.0 and greater
1.261 and 1.27
If the first display is Method #?
then enter 888 with the numeric keys. Press READ/ENTER. The
V2.0 V2.2
display will show or
Self-Test V3.X
DO NOT perform the calibration adjustment. Monochromator
calibration could be permanently lost (Hach Service cannot restore
the calibration).
Display
, press SHIFT CONFIG/METH,
.
46644-88