Related Manuals for Ametek ORTEC MOBIUS-B
Summary of Contents for Ametek ORTEC MOBIUS-B
- Page 1 ORTEC ® MÖBIUS Recycler ™ Condensing Liquid Nitrogen HPGe Detector Cooling System User Manual Printed in U.S.A. ORTEC® Part No. 805709 0514 Manual Revision F...
- Page 2 NOTICE OF PROPRIETARY PROPERTY — This document and the information contained in it are the proprietary property of AMETEK Inc., ORTEC Business Unit. It may not be copied or used in any manner nor may any of the information in or upon it be used for any purpose without the express written consent of an authorized agent of AMETEK Inc., ORTEC Business Unit.
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Page 3: Table Of Contents
EMPTYING AND WARMING THE MÖBIUS ...................... 17 4.3. TRANSPORTING OR SHIPPING THE MÖBIUS ....................18 4.4. DETECTOR WARM-UP ............................ 18 4.5. REMOVING THE DETECTOR/CRYOSTAT ASSEMBLY ..................18 4.6. DECOUPLING A POPTOP CAPSULE FROM THE CRYOSTAT ................19 PROPERTY OF AMETEK, INC. – ORTEC ®... - Page 4 DANGER – Hazardous voltage Protective earth (ground) terminal Please read all safety instructions carefully and make sure you understand them fully before attempting to use this product. PROPERTY OF AMETEK, INC. – ORTEC ®...
- Page 5 ® MÖBIUS™ Recycler HPGe Detector Cooling System 805709F / 1115 ORTEC [Intentionally blank]...
- Page 6 ® MÖBIUS™ Recycler HPGe Detector Cooling System ORTEC 805709F / 1115 MÖBIUS-B w/ HJ-style cryostat MÖBIUS w/ PopTop® cryostat MÖBIUS-B w/ PopTop® cryostat PROPERTY OF AMETEK, INC. – ORTEC ®...
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Page 7: Introduction
ORTEC MÖBIUS™ RECYCLER CONDENSING LIQUID NITROGEN HPGE DETECTOR COOLING SYSTEM INTRODUCTION The ORTEC MÖBIUS Recycler integrates a Sunpower® CryoTel® Stirling-cycle cryocooler with a specially designed 28 liter liquid nitrogen (LN2) dewar to yield a high-reliability HPGe detector cooling system. This is especially useful for counting laboratories that have periodic power failures. -
Page 8: Specifications
MÖBIUS can be used with existing non-ORTEC detectors in dipstick cryostats having 1.25 or 1.50 inch diameter. It is expected that the detector will have similar performance compared to using a standard LN2 dewar. Some degradation may occur depending on the detector's age and configuration. PROPERTY OF AMETEK, INC. – ORTEC ®... -
Page 9: Mechanical
1.3.2. Mechanical ● Dewar Capacity 28 L, excluding detector dipstick volume. ● Cooler AMETEK SUNPOWER with passive vibration dampening. ● Auxiliary Cooling Internal fan. ● Audible Noise Less than 60 dB (A) at 1 m fully operational, below 30°C ambient. -
Page 10: System Overview
Options will typically be packaged separately and will include their own instructions. 2.2. THE MÖBIUS Figure 2 through Figure 5 illustrate the main features of the MÖBIUS. Figure 2. MÖBIUS Top Panel Features (1). All system components and specifications subject to change without notice. PROPERTY OF AMETEK, INC. – ORTEC ®... - Page 11 ® MÖBIUS™ HPGe Detector Cooling System 805709F / 1115 ORTEC Figure 3. MÖBIUS Top Panel Features (2). Figure 4. Rear Panel Features.
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Page 12: Preparing The Möbius For Use
120 V ac/60 Hz operation and the 250 V/5 A time-delay fuses for 220 V ac/50 Hz operation. Install the fuses in the block, turn the block until the key tab faces down (Figure 7), and push it into the power entry module until both sides snap positively into place (Figure 8). PROPERTY OF AMETEK, INC. – ORTEC ®... - Page 13 ® MÖBIUS™ HPGe Detector Cooling System 805709F / 1115 ORTEC Figure 6. Remove Protective Foam Block and Caution Tag Under Cooler Cover and Keep for Future Use. Figure 7. Underside of Fuse Block is Keyed. Figure 8. Insert Keyed Side Down, Snap Both Sides Into Place.
- Page 14 (Figure 9) and press it onto the power cord. The other end is a standard female IEC connector that plugs into the MÖBIUS power entry module. Figure 9. Select the Plug That Matches Your Outlet. PROPERTY OF AMETEK, INC. – ORTEC ®...
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Page 15: Installation
® MÖBIUS™ HPGe Detector Cooling System 805709F / 1115 ORTEC INSTALLATION Installation requires at least two people (better still, three) and a step-stool. Specific shield config- urations call for specific installation methods. However, installing the MÖBIUS is essentially no different than installing a standard 30 L dewar because the two are very similar in size. -
Page 16: Assembling The System
CAUTION Keep the cabling and connectors from being pinched, kinked, deformed, or otherwise damaged as they and the cooling rod pass through the bottom of the shield. PROPERTY OF AMETEK, INC. – ORTEC ®... -
Page 17: Filling With Ln2
® MÖBIUS™ HPGe Detector Cooling System 805709F / 1115 ORTEC 3) If using the split center plug, put the two halves carefully in place before fully lowering the cooling rod through the bottom of the shield. To avoid ground loops, position the detector high enough inside the shield that its base plate does not touch the top of the center plug. - Page 18 MÖBIUS dewar. Once the system is stabilized, power consumption level will vary while pressure is maintained around 0.5 psi. It is normal for cooler to turn off occasionally when pressure drops below 0.50 psi. A display example of a pressurized, cooled down MÖBIUS would look as follows: PROPERTY OF AMETEK, INC. – ORTEC ®...
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Page 19: Safety And Equipment Warnings
® MÖBIUS™ HPGe Detector Cooling System 805709F / 1115 ORTEC 13) At this point, the MÖBIUS is a closed system that is designed to contain all nitrogen vapor. You are now ready to connect the detector cable to the detector and multichannel buffer. NOTE: Mobius is designed to operate without liquid nitrogen refilling for up to two years under normal, continuous operating conditions (e.g. -
Page 20: Other Precautions
250 V/5 A time-delay fuses for 220 V ac systems — before connecting the power cord to ac mains power. Replace blown fuses with the same model and performance specifications. Never short circuit a blown fuse. ● Always disconnect the power cord from the MÖBIUS before performing any maintenance. PROPERTY OF AMETEK, INC. – ORTEC ®... -
Page 21: Unintended Detector Warm -U P
® MÖBIUS™ HPGe Detector Cooling System 805709F / 1115 ORTEC ● If the mains power cord is damaged or lost, contact ORTEC for the correct replacement cord. Do not replace with an inadequately rated cord. 3.3.2.3. NINTENDED ETECTOR If, for any reason, the detector warms up enough that the HV shuts down (e.g., loss of LN2) or if for any other reason the detector warms for more than 10 minutes, it should be warmed to room temperature before re-cooling. -
Page 22: Maintenance
ORTEC (part number - SUNP-300112). 3) Push the air filter back into the bracket on both sides. Figure 14a. Installing the Filter PROPERTY OF AMETEK, INC. – ORTEC ®... -
Page 23: Emptying And Warming The Möbius
® MÖBIUS™ HPGe Detector Cooling System 805709F / 1115 ORTEC 4) Once the air filter is inserted, push the mesh screen back in the bracket as in Figure 15b. Figure 15b. Installing the mesh screen. 4.2. EMPTYING AND WARMING THE MÖBIUS CAUTION Do not tip the MÖBIUS and pour the LN2 out of the fill collar! Doing so will damage the cooler and may... -
Page 24: Transporting Or Shipping The Möbius
(optionally using methanol as in the preceding paragraph). As user #1 continues lifting the detector/cryostat with one hand, user #2 pushes up one of the center plug pieces until user #1 can lift it PROPERTY OF AMETEK, INC. – ORTEC ®... -
Page 25: Decoupling A Poptop Capsule From The Cryostat
® MÖBIUS™ HPGe Detector Cooling System 805709F / 1115 ORTEC out or until it falls aside into the bottom of the shield. As the detector cable is pulled up through the bottom of the shield, ensure that no connectors are pulled loose or otherwise damaged. Place the cold detector/cryostat assembly on an uninsulated flat surface (such as a lab bench or cart), or in a cryostat... - Page 26 ® MÖBIUS™ Recycler HPGe Detector Cooling System ORTEC 805709F / 1115 [Intentionally blank] PROPERTY OF AMETEK, INC. – ORTEC ®...