Installing batteries in the wrong orientation may damage the Spectrophotometer.
Follow the polarity orientation shown on the case by the clips.
Install the eight D-size batteries(17, fig. 2-5) in the clips at the bottom of the case as shown in the
Check all connections and batteries to ensure they are complete and fully seated. Replace the front panel
and attached electronics in the case. Fasten the thumb screws(9). Replace the sample cells(7) and meter scale
If the Spectrophotometer is to be stored for a significant length of time, the batteries should be
removed to avoid damage that may result from battery leakage.
After use, disconnect the Spectrophotometer battery cable(28). Ensure the ac voltage plug(26) is installed
on the power supply board(20).
184.108.40.206. Meter Scale Cards.
The Spectrophotometer includes two identical
sets of eight meter scale cards(2, fig. 2-5 & fig.
Spectrophotometer specify which meter scale
card should be used for that test. The specified
card is installed (fig. 2-6) by sliding it in the
slot(2) at the left of the meter housing(l). Make
sure the card is pushed as far to the right as it
Figure 2-6. Meter Scale Card Insertion.
220.127.116.11. Warm Up.
Under ac power, leaving the unit on for extended periods of time will reduce bulb life and may
damage optical elements.
The Spectrophotometer should be allowed to warm up for one minute before use. When operating on ac power
the unit may be left on after warm up until all the planned tests are completed, to save time. When operating on
battery power, the unit should be turned off after a test to conserve battery power.
To prolong bulb life and protect optical elements when not in use, set the light control(10, fig. 2-5) for
approximately 20 on the %T meter scale(14). Set the wavelength dial(8) to 550 nm.
18.104.22.168. Zeroing the Spectrophotometer.
Before every test-the Spectrophotometer should be "zeroed." Follow these steps (fig. 2-5).
Remove any meter scale cards(2) from the meter. The permanent scale(l4) marked as "%T" at the top and
"Absorbance" at the bottom should be visible. Make sure the light shield lid(4) over the sample cell well(5) is