DHR/AR Series Environmental Test Chamber Getting Started Guide
Page 22
The electrical and gas/ liquid connections for the ETC low temperature assembly are shown in Figure
12.13.
4
Connect a gas feed to the
Gas In
port on the flow meter assembly using the 8-mm internal diameter
white nylon tubing provided. If the main air supply is used as the feed gas, the line should be split
upstream
of the flow meter assembly and rheometer filter/regulator.
5
Connect the cable from the
Liq
connector on the flow assembly to the solenoid valve on the cryogenic
system.
6
Set a pressure of 15 to 20 psi on the Dewar system.
7
Open the control valve approximately two full turns*.
8
Set a flow rate of 10 L/min on the flow meter assembly. Make sure the oven is closed.
*
The exact setting depends upon the required operating conditions for the ETC as well as the type of cryogenic cool-
ing system used. Additional information on this setting can be found in
Figure 18
Electrical and gas/liquid connections for the ETC Low Temperature assembly
(The electrical connections are shown as the narrow black lines.)
