7
No light visible in eyepiece:
Check if power switch is flipped to the “|” position.
Check if the power cord is attached to the rear of the polarimeter and to a
functioning power supply. Refer to Basic Assembly section.
Check to see if fuse is burnt. Refer to Fuse Replacement section.
Ensure there is nothing blocking the light path in the sample cell chamber.
Field of view is blurry:
Make adjustment to eyepiece focusing control. Refer to Basic Setup and
Eyepiece
Focusing
section.
Ensure that the eyepiece lens is clean and free of oil or dirt.
Obtaining erroneous readings:
Check the accuracy and zero the scale if necessary. Refer to Instrument
Accuracy
section.
Troubleshooting
Measuring Scale:
°Arc
Measuring Range:
±180°
Resolution:
0.1
Accuracy:
±0.1
Optcal Wavelength:
589nm
Sensitivity:
Up to 99.9% Light Absorption
Measuring Light Source:
LED
Sample Cell Length (max):
200mm
Power Requirements:
110/220VAC, 50/60Hz
Dimensions:
460 x 140 x 330mm
Weight:
5.2kg
Specifications
Operation (continued)
Figure 7
Instrument Accuracy
Your VEE GEE polarimeter was calibrated at the factory during production. Follow the instructions below to check
the accuracy of your instrument and make adjustments if necessary.
1. Ensure the the ambient room temperature of your work area is 20°C (±2°C). Fill
the sample cell with distilled water that is at room temperature. You should get a 0°
reading which indicates that your instrument is reading properly.
2. If the reading is off slightly you can either make manual adjustments to your results
or recalibrate the Vernier Scales. Note: a recalibration should only be performed
by a user that is comfortable making mechanical adjustments to the instrument.
3. With a small Phillips screwdriver (not included) loosen the two set screws (figure 7) located near the Vernier
scale that is reading incorrectly. Do not remove the screws, it is only necessary to slightly loosen them.
4.Use your fingers to push up or pull down the loosened set screws to reposition the inner scale until the 0°
reading is obtained. Hold the scale steady while retightening the adjustment screws. Repeat on the opposite
side Vernier scale if necessary.
