FEI Quanta FEG 250, User'S Operation Manual

Page: 171 / 228

System Options: Cooling Stage / Waterless Cooling Stage
9-23
FIGURE 9-20 COOLING STAGE ASSEMBLY
MOUNTING ADAPTER WITH MOUNTING SCREW
The Chamber feed-through Plate
provides feed-through connectors for the cables and water hoses.
FIGURE 9-21 CHAMBER FEED-THROUGH PLATE INSIDE / OUTSIDE
Cooling Stage Controller
This microprocessor-controlled board provides accurate and stable
automatic temperature control of the cooling stage and interfaces with
the xT microscope Control software.
The temperature measurement accuracy is determined by the
thermistor and the controller. These specifications are as follows:
• thermistor accuracy: ± 0.1 °C
• normal / limit temperature range:
± 20 °C from an ambient temperature / from - 25 to + 55 °C
Additionally, accuracy of a temperatures readout depends on sample
conductivity, thickness, shape and general thermoelectric properties
that vary by sample and mounting method.
Cables
• The Outer Cable connects the outer feed-through plate side with
the controller board.
• The Inner Cable connects the inner feed-through plate side with
the cooling stage (to which the cable is permanently attached).
Heating Stage connector
Water hoses flanges
(blue color)
Cooling Stage connector