Lake shore vnf series low temperature thermostat system - sample in flowing steam

      VNF Low temperature thermostat is very suitable for samples with poor thermal conductivity , It can provide uniform cooling for irregular shaped samples . The sample is cooled by a temperature controlled stream of nitrogen vapor , Therefore, cooling does not depend on the sample mounting configuration or thermal conductivity .

       Standard configuration

      Lake Shore VNF-100 low temperature Thermostat It is a liquid nitrogen variable temperature low temperature thermostat , The sample is in the flowing steam .VNF-100 It is very suitable for samples that are difficult to heat fix （ Such as liquid or powder samples ） The experiment of , When no less than 65 K At ,VNF-100 yes SuperTran-VP or SuperVariTemp A low-cost alternative to Dewar bottles .VNF-100 There is a top loading sample chamber for rapid sample exchange , And the cross of the sample chamber 、f = 1.0 Optical access .

      Standard functions ：

      Quick replenishment capability with funnel assembly

      High quality bellows sealed exhaust valve and built-in cryogenic pump for maintaining high vacuum

      Safety relief valves to protect all separate spaces

      1.25 Inch diameter sample tube , With customer specified optical channel （ The standard system provides four quartz window pairs ,f = 1.0 The optical channel enters the sample space ）

      Top loading sample chamber for rapid sample exchange

      The variable cooling system places the sample in a flowing N 2 In the steam （ Very suitable for low thermal conductivity samples ）, Provide excellent cooling capacity and temperature control

      Lightweight sample positioner / Installation of components , Enter the window area through multi pin electrical feedthrough , Provides rotation and translation around the cryostat axis

      Two silicon diodes are mounted on the evaporator （ Heat exchanger ） And sample rack , Used to control and monitor system temperature

      Optional equipment ：

      The exhaust flow meter enables more accurate control

      Special window material and geometry （IR、UV and X ray ）

      Special sample rack , Including four point resistivity measurement and liquid cuvette （ See other configurations ）

      VNF Series specifications

      Other configuration

      Special models with base plates VNF-100 Can be installed to HORIBA Jobin Yvon FluoroLog-3 Modular fluorescence spectrometer

      model VNF-100T

      special 475K High temperature non optical VNF-100T

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      VNF-100T Black anodized mounting flange around the body

      optics VNF-100 Cuvette sample rack

      This photo shows one used for mounting on an optical VNF-100 Cuvette sample rack on . It's related to all 12.5 mm wide × 12.5 mm Deep cuvettes are compatible , for example Starna model 1-G-10、1.7-G-10、1-SOG-10、1-Q-10 and 1-I-10.