Summary of Contents for Ferrovac CTH40
- Page 1 Liquid nitrogen UHV Booster and Fast Pump Down Dock CTH40/CTDH40/VSCT40 Operation Manual Revision C [June, 2023] Ferrovac AG Thurgauerstrasse 72 CH-8050 Zürich Phone +41 44 273 16 38 sales@ferrovac.com www.ferrovac.com...
- Page 2 Warranty Ferrovac warrants this product to be free of defects in material and workmanship for 24 months from the date of shipment. In the case of any defects, Ferrovac will either repair or replace the product at our discretion. Warranty limitations The warranty for this product does not apply to defects resulting from the following: •...
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Page 3: Table Of Contents
Maintenance......................21 8.1 Bake-out ..........................21 8.2 Cleaning..........................22 erformance data......................22 9.1 Cool-down and warm up of VSCT40 ..................22 9.2 Cool-down and warm up of VSCT40 with the new CTH40 installed........23 10 Wiring, cable layouts, temperature conversion ..............Rev. C Page|3... - Page 4 12.2 Download ..........................29 List of Figures Symbols used in the drawings....................5 Overview drawings of the CTH40 (top) and CTDH40 (bottom) with their components. The original drawings can be downloaded from our homepage in the category UHV suitcase accessories..................10 Example image for usage of the VSCT40 with cold trap and our NexGeneration UHV suitcase...........................
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Page 5: Terms And Symbols
The information in this document represents the state of the product at the date of print. Technical changes may be made without notice. Ferrovac AG makes no warranties or representations with respect to accuracy or completeness of the contents of this publication. Figures and photos are not binding. The product names used are for identification purposes and may be trademarks of their respective companies. -
Page 6: General Information
The product described in this document may only be used for its designated application. Designated use of the product is defined by the following rules: The product is: Used with original cable sets supplied by Ferrovac which are explicitly specified for the use with · the product described in this publication. - Page 7 Operation Manual CTH40/CTDH40/VSCT40 General safety Information Read the safety instructions very carefully. All safety precautions must be strictly observed at all times while using the product described in this manual and any associated instrumentation. Study this document to learn how to operate your product correctly. Keep this instruction manual in a safe place close to the described product and inform all other users of the manual’s location.
- Page 8 Operation Manual CTH40/CTDH40/VSCT40 Warning! Always check for correct mains voltage before connecting any equipment! Mains supply voltage fluctuation must not exceed ±10% of the nominal voltage. Warning! • Always observe and strictly follow the safety notes and regulations given in this document •...
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Page 9: Technical Specifications
Operation Manual CTH40/CTDH40/VSCT40 Technical Specifications CTH40 Flange type: DN40CF · Heat exchanger: Aluminum cooling blocks · Core : OFHC (Copper), stainless steel · Heating wire: Kanthal ∅ 0.3 mm · Max. hEATING current 4.0 A · Cryogenic liquids Liquid nitrogen only ·... - Page 10 Operation Manual CTH40/CTDH40/VSCT40 Figure 2: Overview / technical drawing of CTDH40/CTH40 with their components. All measures are in mm. The original drawings can be downloaded from our homepage in the category UHV suitcase accessories. Rev. C Page|10...
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Page 11: Introduction
On top the water partial pressure will be reduced. For a fast warm-up, the CTH40 and CTDH40 can be heated vie a tungsten filament while the temperature can be monitored via a Pt100 temperature sensor. The CTH40 and CTDH40 can be ordered as stand-alone products or together with a chamber and valve, the VSCT40. -
Page 12: Overview Of The Cth40 (Left) And Ctdh40 (Right) With Their Components
Operation Manual CTH40/CTDH40/VSCT40 Figure 4: Overview of the CTH40 (left) and CTDH40 (right) with their components. The package should contain for CTH40: • The fully assembled CTH40 • This manual • Optional: Cabling • Optional: Subsequent manuals (if applicable e.g. for a kit) The package should contain for CTDH40: •... -
Page 13: Overview And Description
The CTH40 can be connected to a liquid nitrogen supply via the tube fittings on top of it. It does not matter which tube is used as inlet or outlet. -
Page 14: Demonstration Of Mounting Orientations For The Ctdh40 And Cth40. The Ctdh40
Operation Manual CTH40/CTDH40/VSCT40 Figure 5: Demonstration of mounting orientations for the CTDH40 and CTH40. The CTDH40 should only mounted in the up-right orientation. Figure 6: Schematic example for the usage of the VSCT40 with a chamber together with our NexGeneration UHV suitcase. -
Page 15: Temperature Measurement And Heating
Operation Manual CTH40/CTDH40/VSCT40 4.2 Temperature measurement and heating The CTH40 and CTDH40 have a Pt100 temperature sensor installed inside. For the wiring diagram please refer to Fig. 10 (and Fig. 11 if you have bought the respective cable). Useful items: •... -
Page 16: Installation For Cool-Down
Operation Manual CTH40/CTDH40/VSCT40 When using the heating coil, the device should be under vacuum! Before connecting, make sure that the output of the power supply is switched off. Connect the blue (−IF ) and red (+IF ) banana plug to a standard laboratory supply. -
Page 17: Cool Down Procedures
When the dewar is filled, place the foam cap on top of the dewar. 6.2 Cool-down of the tube version CTH40 This section contains suggestions for step by step procedures to controlled cool down of the CTH40. The responsible body needs to provide a respective set-up including valves, hoses and connectors, liquid nitrogen (LN2), vessels and nitrogen gas (N2) cylinders. -
Page 18: Cool-Down With Liquefying N₂ Gas
The exhaust liquid should be safely collected in a vessel. Keep a steady flow of liquid nitrogen through the CTH40, such that there is always LN2 in the tube of the CTH40. This generally doesn’t require a large flow or high pressure. -
Page 19: Warm Up Procedures
Please be aware that the lower Cu part of the CTH40 takes usually a little longer than the upper part to warm up. Therefore it is advisable to wait about 5 min when the sensor had reached 20 C or higher. Afterwards the temperature should be high enough to vent the chamber without the danger of condensation. -
Page 20: Warm-Up With Hot Gas
10 min 10 min Table 1: Suggestion for a warm-up program for CTH40. (Voltage statements are only rough numbers as they vary with temperature and exact length of the coil.) This program is very similar to the one used for the test data in Fig. -
Page 21: Warm-Up Ctdh40
7.2 Warm-up CTDH40 The warming procedure for CTD40 is very similar to CTH40. The best is to not fill the dewar to its maximum, but only with the amount of liquid nitrogen needed to perform the transfer. It is possible to blow out the remaining liquid nitrogen by leƫng warm nitrogen gas pass into the dewar. -
Page 22: Cleaning
9.1 Cool-down and warm-up of VSCT40 Some example data, Fig. 8 for the pressure and temperature measured with the CTH40 in a VSCT40. The chamber had been baked prior to the test. To simulate a typical transfer situation, the chamber had been vented by N2 and then opened at the DN40 flange for about 10 min –... -
Page 23: Cool-Down And Warm Up Of Vsct40 With The New Cth40 Installed
9.2 Cool-down and warm-up of VSCT40 with the new CTH40 installed Our new version of CT40, the CTH40, has a heating coil installed inside for fast warm-up. The rest of the functionality is comparable to CT40 while the thermal connection also was improved. The test chamber used was this time electropolished. -
Page 24: Measurement Data Taken With A Vsct40 On A Typical Cf63 Turbo Pump. On The Chamber Of The Vsct40 Our New Vscth40 Was Installed
Operation Manual CTH40/CTDH40/VSCT40 Figure 9: Measurement data taken with a VSCT40 on a typical CF63 turbo pump. On the chamber of the VSCT40 our new VSCTH40 was installed. Rev. C Page|24... -
Page 25: Sensor And Filament
Operation Manual CTH40/CTDH40/VSCT40 Figure 10: Pin layout for miniature 6-Pin feedthrough for temperature measurement including Pt-Sensor and filament Rev. C Page|25... -
Page 26: Connection Cable Layout (Cabcth40Htb4M Or Cabcth40Ht4M) For Temperature
Operation Manual CTH40/CTDH40/VSCT40 Figure 11: Connection cable layout (CABCTH40HTB4M or CABCTH40HT4M) for temperature measurement including Pt-Sensor and filament. For the temperature sensor 4 wires are available, the heating coil only as 2 wires. For the pin layout of the 6-pin miniature connector please refer to Fig. -
Page 27: Graphical Conversion Of Resistance Into Temperature For The Pt100 Sensor
Operation Manual CTH40/CTDH40/VSCT40 Figure 12: Graphical conversion of resistance into temperature for the Pt100 sensor. Figure 13: The CT-devices are available with a cable and power supply kit. Rev. C Page|27... -
Page 28: Upgrades And Options
12.2 Download This manual can be downloaded from our website VSCT40. It can be found in the specifications of the CTH40 or VSCT40. For any suggestions or questions considering this manual, please contact us and write an e-mail to sales@ferrovac.com.
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