Micromeritics Gemini VII 2390a, Operator'S Manual, Page: 57 / 426

Gemini VII Preparing for Analysis
239-42828-01 - Dec 2012 3-21
Installing the Sample Tube
Follow the steps below to attach the sample tube to the analysis port and the balance tube to the bal-
ance port. Minimize sample exposure to air by completing the steps quickly.
1. Remove the sample tube stopper.
2. Place the connector nut, ferrule, and O-ring onto the sample tube stem.
The sample tube ferrule is tapered slightly on one end. The ferrule may be installed onto the
sample tube with the tapered end in the up or down position.
3. Attach the sample tube to the analysis port. Ensure it is fully in the port. Secure it in place by
screwing the connector nut onto the analysis port. Hand-tighten the connector nut.
4. If the balance tube is not installed, attach it to the balance port following the above procedures. If
a filler rod was used in the sample tube, one must be used in the balance tube.
If analyzing samples with a surface area of 1.0 m
2
or less, use filler rods in the sample
and balance tubes. Refer to ANALYZING SAMPLES WITH TOTAL SURFACE
AREA OF 1.0M2 OR LESS
, page
E-1
.
It is not necessary to remove and replace the balance tube between analyses unless it
has been contaminated or if using a different size sample tube.
O-ring
Ferrule
Connector nut
Sample tube