Perform Reference Material Analysis; Perform An Empty Tube Analysis For Diagnostic Purposes - Micromeritics GEMINI VII Operator's Manual

Table of Contents

ERFORM

EFERENCE

Perform a Reference Material Analysis on page 5 - 16

ERFORM AN

MPTY

An empty tube analysis is a means of pinpointing operational problems in the analyzer. Leaks, as

well as electronic problems, will result in an unsatisfactory blank analysis. This test should be

performed prior to detailed troubleshooting. The data produced during the blank analysis can be

helpful in identifying the cause of a problem and should be performed before contacting a

Micromeritics Service Representative.

Helium is required for performing an empty tube analysis since a measured free space is required.

If helium is unavailable, contact a Micromeritics Service Representative for an alternative method

of performing this procedure.

1. Install empty, straight-wall sample tubes (free of cracks or chips) of the same size in the

sample and balance ports. Ensure the O-rings are in good condition.

2. Place the Dewar support on the elevator, then place a Dewar of water at ambient tem-

perature on the Dewar support. (A Dewar support is not necessary for the larger Dewar

used with the Gemini VII 2390t. Place the Dewar directly on the elevator.)

3. Go to Unit [n] > Empty Tube Analysis.

4. Click

Browse

and select a file or to create a new one. Click Open.

5. Click

Edit

to make modifications or replace all parameters in the open file using the

Replace All

button. Click Save, then click Close.

6. Click

Report after analysis

analysis is complete. Click OK.

7. Click

Start

to begin the analysis. A window displays data as they are collected. A short

delay is encountered before the port status changes from the Idle state at the bottom of the

screen. Review the analysis results to see if they are within the tolerances shown in the fol-

lowing table. If these results are not achieved, call a Micromeritics Service Representative.

Gemini VII Operator Manual

239-42828-01 (Rev H ) — May 2021

ATERIAL

NALYSIS

UBE

NALYSIS FOR

to generate reports to specify the report destination when the