DHR/AR Series Environmental Test Chamber Getting Started Guide
Page 21
Installing the Low Temperature Accessory
In order to operate the ETC at temperatures below ambient and also to facilitate rapid cooling, the
(optional) low temperature accessory can be used. This works by supplying a controlled flow of liquid
nitrogen/cold nitrogen that is fed down the inside of the oven and evaporates.
Follow the installation procedure in the previous section up to
. Then use the following additional
steps to complete the installation.
1
Connect the Event cable from the CCU flow control assembly to the
Event A
connection on the rheometer.
Figure 16
Event connection.
2
Ensure that the cryogenic system has been installed as directed in the instructions supplied by the
manufacturer.
3
Connect the tap and solenoid valve unit to the liquid nitrogen outlet on the Dewar, and the unit to the
Liquid in
port on the flow meter assembly using the long flexible hose provided. Connect the
Gas/
Liquid Out
port on the flow meter assembly to the purge gas port on the ETC using the short flexible
hose provided, as shown in the figure below.
Figure 17
Connecting the hoses (AR Series shown).
