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CHAPTER 5:
Advanced Operation
Model CRX-6.5K Probe Station
5.2.2.2 HT Sample Stage Installation
The HT sample stage installation in the Model CRX-6.5K probe station is similar to the
sample holder installation. These instructions assume that you are familiar with
section 4.3 in this manual. As with the standard sample holders, the sample can be
installed on the HT sample stage prior to installation into the probe station. Follow
this procedure to install the HT sample stage onto the Model CRX-6.5K sample stage.
1. Remove the vacuum chamber lid, radiation shield lid, and any installed probes.
Fully retract any probe arms.
2. Using a 2.5 mm hex driver and the sample holder removal tool, carefully remove
any other sample holder from the probe station. Take care not to damage to the
cryogenic coaxial wire when removing any sample holder from the probe station.
3. Align the plug on the HT sample stage with the electrical socket located in the
CRX-6.5K and carefully lower the HT sample stage onto the sample stage. Take
care not to damage to the cryogenic coaxial wire when lowering the HT sample
stage onto the sample stage.
4. Using the sample holder removal tool, install the HT stage plug into the socket.
5. Using a 2.5 mm hex driver, tighten the four M3 screws at the base of the HT stage
to the sample stage by starting all four screws in a few threads before tightening
any screws to prevent cross-threading.
6. Tighten the four screws securely; this is the source of thermal contact between
the HT sample stage and the sample stage. It is best to tighten all four screws a
little at a time until snug.
Do not over-tighten, as damage to the sample stage threads is costly to repair.
Input
Sensor type*
Filter
Temperature
limit**
Input units
Sensor curve
High temperature
(HT) sample stage
Input D
Platinum
On (8 pts
10% window)
680 K
Kelvin
User curve 22
*For platinum sensors, autorange and current reversal are on
**The controller maximum temperature limit is set above the operational maximum to avoid nuisance system shut-
down during operation.
TABLE 5-1
Model 336 temperature controller input settings for the high temperature stage
Output
Control input
Output mode
Heater
resistance
Max current
Power up
enable
Heater out
display
Setpoint
ramping
Heater range
1
Input D
(HT sample stage)
Closed loop PID
25
)
2 A (for 100 W)
Off
Power
10 K/min)
High
TABLE 5-2
Model 336 temperature controller output settings for the HT sample stage connected to Output 1
FIGURE 5-3
HT sample stage connections
