2-24 Electrostatic Classifier Model 3082 and SMPS Spectrometer Model 3938
Installing a DMA
The Model 3082 can be operated with a Long DMA a Nano DMA or a 1nm-
DMA. The DMAs mount onto the classifier with a quick-connect bracket
containing a spring-loaded locking mechanism; the bracket provides
support as well as electrical grounding. Mounting holes for optional side-
support bracket (DMA-BRACKET) are provided for operating in
environments with high vibration and to hold the DMA more securely. An
identifier chip on the base of the DMA identifies the DMA to the classifier.
The 1nm-DMA also includes a bracket for horizontal mounting, and a
female outlet port which matches the inlet of the Model 3777 Nano
Enhancer.
W A R N I N G
If you operate the DMA with a classifier that is not installed in the
mounting base bracket, you must either connect the base of the DMA to
the classifier cabinet with a ground strap, or provide independent earth
grounding to the DMA to avoid the risk of electric shock.
Installing a Long DMA
To install a Long DMA, follow these instructions:
1. To use the optional side-support bracket accessory (DMA-BRACKET),
fasten it to the side of the classifier with a 9/64-inch hex wrench using
the two provided 8-32 x 3/8-inch socket-head cap screws.
2. Pull out the clevis pin so that the bracket is open. Set pin aside.
3. Remove the 3/8-inch black conductive tubing from the 3082 Accessory
Kit. Using the provided tube cutter, or a clean razor blade, cut one
12-inch and one 25-inch length of tubing.
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