这款可以从-170度到700度，应该可以配液氮冷却

For subambient temperatures, two types of cooling device are available :

• A simple liquid nitrogen (LN2) cooling accessory
The LN2 accessory is a manually operated cooling accessory. Its temperature of operation is from -170 to 500 °C and it is a highly
robust and cost effective solution to low temperature control.

• A cryothermostat cooling device for intermediate temperature ranges :
-70 °C to +200 °C under a fl ow of Helium
-50 °C to +400 °C under a fl ow of Argon, Nitrogen or dry Air.
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