TA Instruments RSA-G2, Руководство пользователя

Страница: 53 / 127

RSA-G2 Getting Started Guide Page 23
The oven is a forced convection environmental chamber that encloses the sample. Mounted in the oven are
two resistive heaters, which are used to control the temperature of the gas flowing through them. During
testing at or above ambient temperature, either air or nitrogen gas may be input to the heaters. If test tem -
peratures must be extended to below ambient, the input to the heaters must be evaporated liquid nitrogen
(LN2) supplied by the optional cryogenic LN2 Controller (or very cold gas supplied by the optional
Chiller).
Figure 11 RSA-G2 Forced Convection Oven (FCO).
1 Operating past 500°C for extended periods of time can deteriorate the standard 17-4 stainless steel geometries.
The 316 SST geometries are recommended for such applications. Please contact your local Service representative
for more details.
2 Temperature testing above 500°C is limited to two hours. Transducer may shut down if run for a longer time period.
The FCO has two forced gas gun heaters with counter-rotating air flow for a wide temperature range
(ambient to 500°C) and maximum temperature stability. If you will be running at temperatures below
ambient, either the optional LN2 Controller (operation to –150°C) or the ACS-3 chiller (operation to
–100°C) can be used to extend the operational range of the oven. The FCO is recommended for measuring
materials' viscoelastic properties changes with respect to frequency or temperature in either bending or ten -
sion/compression modes.
Table 1: FCO Specifications
Temperature range
1
with LN2 Controller
with Chiller
with ACS-3
Ambient to 600°C without subambient controllers
–150°C to 600°C
2
–50°C to 600°C
2
–100°C to 600°C
Heating rate up to 60°C/min
Precision +0.05°C
Stability +0.1°C
Geometry compatibility Oven is compatible with all RSA-G2 and RSA III
geometries (except RSA III immersion geometry)
Optional accessories LN2 Controller, Chiller, Camera