Janis Research, cryogenics, cryostats

Accessories and Ancillary Equipment

Liquid Helium Transport/
Laboratory Storage Dewars

Cryofab, Inc.

CF-100
  

The Cryofab CMSH helium dewar is designed for minimum loss storage, transportation and dispensing of liquid helium. The CMSH container employs state of the art vapor cooled multishield technology in conjunction with superinsulation to effect the lowest guaranteed loss rates in the industry on comparable units. The advanced insulation system results in quicker, more efficient cool down without the need for nitrogen pre-cooling. In addition, the elimination of LN2 or helium gas circulation shielding means that the CMSH is virtually maintenance free.

These units have the same general areas of use as old-style, 4-wall helium containers but permit large storage capacities in small packages with lighter weight.
Model Gross
Capacity		 Daily
Boil Off
Rates		 Overall
Height*		 Body
Diameter		 Empty
Weight		 Transfer
Line
Fittings
CF-30 34 Liters 2.75% 48" 20" 131 lbs. 3/8"
or
1/2"
CF-60 65 Liters 1.5% 51" 24" 192 lbs.
CF-100 110 Liters 1% 59" 24" 210 lbs.
* Note: Overall height includes 4" casters.

Liquid Helium Transport/
Laboratory Storage Dewars

Messer
Messer's Stratos 100 SL transport and storage liquid helium dewar, Janis Research, cryogenics

The Stratos® 100 SL liquid helium dewar is a type-approved transport vessel (according to ADR/RID) for transport in closed condition under pressure with: 

  • approval by the German TÜV with necessary factory tests

  • high qualified and certified material

  • rugged head protection ring included

  • safety head with safety neck tube included

  • central DN50 ball valve

  • better insulation with lower evaporation rate

  • long life vacuum protection system with multiple He-leak tests, special treated adsorbent and getter materials

  • type plate and transport labeling

These dewars include roller base and adapter.  Options include level probe and display.

Model Capacity Daily Loss
with BHK Head		 Neck
Diameter		 Filled
Weight		 Empty
Weight
Stratos® 100 SL 103 Liters 0.7 Liters   1.88" I.D. 112 lbs. 80 lbs.

Pulsation Dipstick

This simple liquid helium probe provides an accurate indication of the liquid level in a storage dewar or research cryostat. There are two configurations, one having a thin rubber diaphragm (left) o-ring sealed over the upper portion of the dipstick and the other having a pressure gauge (right) screwed into the upper portion of the dipstick. Both assemblies are connected to a small diameter stainless steel tube that is inserted into the liquid helium. The overall length of the stainless steel tube is designed to the customer's specification. The dipstick produces a steady low frequency pulsation when immersed in liquid helium which can easily be seen on the gauge or felt at the diaphragm with a finger tip. When the dipstick is raised just above the liquid level, a high frequency pulsation occurs. The stainless steel tubing is attached to the diaphragm and pressure gauge assemblies by a threaded fitting and is easily replaceable.

pulsation dipstick, Janis Research

Table of Contents

Page
Introduction 1
Flexible Helium Transfer Lines 2
Liquid Helium Storage Dewars and Accessories 3
Liquid Nitrogen Storage Dewars 4
Mechanical Pumping Stations 5
High Vacuum Pumping Stations 6
Temperature Controllers 7
LHe & LN2 Level Indicators

8
Cryostat Accessories

9

Parts List (including Epoxies, Greases, Wire, etc.)

10
Next Page Janis Products Contact Janis Research Back to Janis Research Home Page
JANIS RESEARCH COMPANY, INC.
2 Jewel Drive, P.O. Box 696
Wilmington, MA 01887-0696 USA
TEL: +1-978-657-8750   FAX: +1-978-658-0349
E-Mail: sales@janis.com
Policies