Turning Off The Analyzer - Micromeritics 1305 Operator's Manual

Model 1305 MultiVolume Pycnometer
12. Remove the 35-cm
150-cm
data sheet.
13. Place the V
three sample runs. Record the V
14. Use a hand calculator to calculate the internal volumes or the calculator
worksheet provided in Appendix B. Record the volumes on the data sheet
along with the instrument serial number, the date, and the name of the
operator.

Turning Off the Analyzer

Perform the following steps to properly shut down the Model 1305 Pycnometer:
1. Remove any sample from the sample chamber and replace the sample cap.
2. Place the >5/<5 valve in the >5 position and the >35/<35 valve in the >35
position.
3. Place the VENT valve in the OPEN position.
4. Admit helium or other dry gas by opening the FILL valve; purge for at least
one minute. Then placee the FILL valve and the VENT valve in the CLOSE
position.
5. Turn off the power switch if the instrument will not be needed within the
next 24 hours.
6. Close the tank valve or other main supply valve for the gas to avoid loss
should the tubing accidentally be ruptured.
The instrument can be left in this state indefinitely and still be ready to run sam-
ples in minutes after restart.
Jun 99
3
sample chamber insert and cup, then install the empty
3
sample cup. Make three sample runs; record the pressures on the
standard volume in the 150-cm
CALIB150
3
sample cup and make
and the pressures on the data sheet.
CALIB150
Turning Off the Analyzer
3-19