Janis Research, cryogenics, cryostats

VPF-100, 500, 800

LIQUID NITROGEN VARIABLE TEMPERATURE CRYOSTATS

Mechanical Drawing of Model VPF Liquid Nitrogen Variable Temperature Cryostat by Janis Research
Optical and Resistivity Sample Holder for Model VPF Liquid Nitrogen Variable Temperature Cryostats by Janis Research

 

STANDARD FEATURES
  • Fused quartz windows
  • 4-way optical access (f = 1.0)
  • Si diode thermometer and heater
    (thermocouple for VPF-800)
  • Electrical feedthrough for thermometry
  • Optical sample holder
  • Complete system test

SPECIFICATIONS
Initial cooldown time (to 77 K) 15 minutes
Temperature range (1):
VPF-100
VPF-500
VPF-800
65-325 K
65-500 K
65-800 K
LN2 hold time: 
77 K
100 K
200 K
5 hours
4.5 hours
2.5 hours
Typical stability (2)
Vacuum level required (3)
Approximate weight		 +/- 50 mK
10-4 torr
7 lbs (3.3 kg)
(1) Temperatures <77 K with optional pumping manifold
(2) Measured with temperature controller
(3) Vacuum pressure measured at room temperature
      prior to adding cryogens

OPTIONAL EQUIPMENT

 
Fixed Probe Sample Holder

Mechanical drawing of fixed probe sample holder for DLTS.Photo of VPF with fixed position sample holder for DLTS. Click for larger view.

Optional Refill Assembly for VPF Cryostats

Optional Refill Assembly for VPF Cryostats

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