2 Operational Procedures
S
AMPLE
T
UBE
I
NSTALLATION
The equipment images in this topic may differ slightly from your equipment; however,
the instructions are the same unless otherwise noted.
1. Remove the sample tube stopper, if used.
2. Place the connector nut, ferrule, and O-ring onto the sample tube stem. The sample tube fer-
rule is tapered slightly on one end; however, it may be installed with the tapered end in the
up or down position.
A. Sample tube or balance tube
B. Connector nut
C. O-ring
D. Ferrule
If analyzing samples with a surface area of 1.0 m
2
or less, use filler rods in the sample
and balance tubes. See
Analyze Samples with a Total Surface Area of 1.0 m2 or
.
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 into 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 pro-
cedures. If a filler rod was used in the sample tube, one must be used in the balance tube.
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.
2 - 10
Gemini VII Keypad Operator Manual
239-42801-01 (Rev E) — July 2021
