Summary of Contents for Fluke MOLBLOC
- Page 1 Low Mass Flow Calibration System AFMETCAL Configurations Installation and Operation Manual Supplement ©2000-2008 DH Instruments, a Fluke Company...
- Page 2 Information in this document is subject to change without notice. No part of this document may be reproduced or transmitted in any form or by any means, electronic or mechanical, for any purpose, without the express written permission of DH Instruments, a Fluke Company 4765 East Beautiful Lane Phoenix AZ 85044-5318 USA.
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Page 3: Table Of Contents
2.2.5 arrangement of flow path components 8 2.2.5.1 DUTs with an fittings 10 2.2.5.2 duts with swage fittings 2.2.5.3 connections for Dut pressure and temperature measurement Application Notes 13 MOLBLOC RANGES 13 Page i ©2000-2008 DH Instruments, a Fluke Company... - Page 4 A N D O P E R A T I O N M A N U A L S U P P L E M E N T 3.1.1 MOLBLOC PRESSURE AND Flow ranges 13 3.1.2 gases 3.1.3 MOLBLOC supply pressure operation 16 3.2.1...
- Page 5 Components List for AFMETCAL Configuration Systems......................... 2 Table 2. Parts List for AFMETCAL Configuration Mass Flow Kit P/N 401578 ....................6 Table 3. molbloc Usable Ranges with High Pressure Calibration..........................13 Table 4. Warranty Service Centers....................................22 Page iii ©2000-2008 DH Instruments, a Fluke Company...
- Page 6 Figure 1. Arrangement of Flow Path Components ................................8 Figure 2. AFMETCAL Kit Downstream of molstic ..............................9 Figure 3. Connection of RPM3 and Temperature Measurement Device for DUT with Back Pressure ............11 Figure 4. AFMETCAL Configuration molbloc Label..............................13 Page iv ©2000-2008 DH Instruments, a Fluke Company...
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Page 7: About This Manual
This manual provides information specific to installing and operating the AFMETCAL molbloc/molbox system configurations purchased under contracts F33660-99-F700 and F33660-00-F7007 and is defined by NSN 6680-01-466-2062. It is intended to be used as a supplement to the molbox1 molbloc Terminal (Ver. 5.00 and higher) Operation and Maintenance Manual, RPM3 Operation and Maintenance Manual and COMPASS for molbox User’s Manual Version 4.00. - Page 8 I N S T A L L A T I O N A N D O P E R A T I O N M A N U A L S U P P L E M E N T Page ©2000-2008 DH Instruments, a Fluke Company...
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Page 9: Introduction
An AFMETCAL configuration molbloc/molbox mass flow calibration system is made up of standard molbloc/molbox system components plus a special hardware kit. The kit includes this manual and several hardware items to provide pressure regulation and interconnections to devices under test (DUTs). - Page 10 CalTool Software Custom Shipping Container This manual is a supplement to the molbox1 and COMPASS for molbox manuals. For molbox1 system specifications, refer to Specifications section in the molbox1 molbloc Terminal (Ver. 5.00 and higher) Operation and Maintenance Manual. Page 2...
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Page 11: Installation
UNPACKING AND INSPECTION Removing From Packaging All molbloc/molbox system components and accessories are delivered in corrugated containers with custom inserts or foam to hold them in place. They are also enclosed in protective plastic bags within the containers. Remove the components from the shipping containers and remove each element from its protective plastic bag. Retain the boxes and inserts for possible reuse. -
Page 12: Compass For Molbox Software
The cases are shipped inside cardboard boxes holding two molblocs each. There is a recessed square on the front of the hard cases on which to apply the molbloc’s calibration sticker if you desire. -
Page 13: Molstics
The cradles on the single mid flow molstic need to be replaced with the large molbloc cradles to fit the larger 30 slm (3E4) molbloc. All of the molstic parts downstream of the cradles also need to be moved further downstream to accommodate the 30 slm (3E4) molbloc’s greater length. -
Page 14: Afmetcal Low Mass Flow System Configuration Kit
RPM3 is packaged with the RPM3 Operation and Maintenance Manual and a power cord. An RS232 cable is included in the AFMETCAL configuration system for PC communication with the RPM3, but it may be packaged with the other accessories. Page 6 ©2000-2008 DH Instruments, a Fluke Company... -
Page 15: General Hardware Setup
Install the metering valve kits on each molstic channel as shown in Figure 1. The single mid flow molstic needs to be configured for the large 30 slm (3E4) molbloc prior to installing the metering valve. The metering valve is inserted into its bracket leaving the panel mounting nut loose. -
Page 16: Installation Of Molblocs
The 10 sccm (1E1) and 50 sccm (5E1) molblocs are mounted in the dual low flow molstic, the 500 sccm (5E2) and 5 slm (5E3) molblocs are mounted in the dual mid flow molstic, and the 30 slm (3E4) molbloc is mounted in the single mid flow molstic. - Page 17 The lengths of the PFA tubes (3, 8) are chosen to accommodate likely positions of DUT ports and the height difference between the bench surface and molbloc platform. For some DUTs the tubes may be selected differently than shown in Figure 2. Since enough fittings are supplied in the AFMETCAL Configuration Kit to assemble two complete flow channel setups, duplicate tubes can be used to provide different lengths.
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Page 18: Duts With An Fittings
DUT during calibration. The density correction is made from knowledge of the pressure and temperature of the gas as measured near the DUT. The measurements of pressure and temperature at the molbloc which are displayed on the molbox and/or COMPASS will not typically be accurate estimates of the pressure and temperature at the DUT, since the expansion of the gas through the metering valve can change both the pressure and temperature. - Page 19 DUT than the temperature measurement connection, or avoid a temperature measurement connection that is significantly restrictive to flow. Also, when the temperature and pressure devices are connected between the molbloc and the DUT, care must be taken to make a leak-free connection.
- Page 20 I N S T A L L A T I O N A N D O P E R A T I O N M A N U A L S U P P L E M E N T Page 12 ©2000-2008 DH Instruments, a Fluke Company...
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Page 21: Application Notes
The result is that the each molbloc’s usable flow range is shifted upward from its nominal flow range. For example, a 500 sccm (5E2) molbloc with a high pressure calibration has a usable flow range up to 1 000 sccm (1 slm). For most range designations, the usable range of the molbloc is double the nominal range as in the previous example. - Page 22 RANGE & SIZE DESIGNATIONS 10 sccm 50 sccm 500 sccm 5 slm 30 slm (1E1) (5E1) (5E2) (5E3) (3E4) 1 000 10 000 40 000 7 500 1 000 10 000 40 000 7 200 Page 14 ©2000-2008 DH Instruments, a Fluke Company...
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Page 23: Gases
47 to 76 psia (325 to 525 kPaa) but since the molbloc verification is performed at 525 kPaa, best results will be obtained when using the molbloc at this inlet pressure. Keeping the inlet pressure at this level also gives the user more freedom to set elevated back pressures on the DUT. -
Page 24: Operation
MOLSTIC regulator The pressure regulators installed on both the low flow and mid flow molstics are adjustable but should be set at a single molbloc inlet pressure then left unchanged. They should be set while at low flows since the regulator outlet pressure tends to drop slightly as flow increases and the molblocs are calibrated for pressures up to but not exceeding 76 psia (525 kPaa). - Page 25 See the COMPASS for molbox User’s Manual Version 4.00 for further instruction on purging within COMPASS. When to purge: Whenever the gas in the flowpath or molbloc to molbox pneumatic lines is unknown or is different from the calibration gas to be used, a purge should be performed. Since there is no flow through the molbloc to molbox lines during normal operation, they will not purge out by the gas movement through the flowpath.
- Page 26 The system leak check is a tool that can be used regularly to make sure that the molbloc and other molstic components are installed properly and are free of significant leaks. Only the system leak check is available through COMPASS software.
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Page 27: Setting Dut Back Pressure
Typically, this only includes the molbloc. When more than one molbloc is required within a single COMPASS test, a test option may be selected to run a molbox purge and/or system leak check after each molbloc change in addition to the beginning of the test. -
Page 28: Entry Of Dut Pressure And Temperature Measurements
Measurement> field. If the field is left as <Manual>, the user will be prompted to enter visually collected temperature data into COMPASS during tests. See the COMPASS for molbox User’s Manual Version 4.00 for more complete information on remote interfacing and temperature and pressure data collection. Page 20 ©2000-2008 DH Instruments, a Fluke Company... -
Page 29: Warranty And Recalibration
DHI. The above warranty and the obligations and liability of DHI and its Authorized Service Providers exclude any other warranties or liabilities of any kind. All molbloc/molbox systems not delivered under contract F33660-99-F7000 are covered by the standard DH Instruments, a Fluke Company one (1) year commercial warranty. -
Page 30: Recalibration
Each molbloc/molbox system delivered under contract F33660-99-F7000 includes one recalibration by DHI of the molbox1 and molblocs delivered with the system. molbloc recalibrations are available only from the DHI, Phoenix, AZ Service Center location. The recommended recalibration interval for the molbloc/molbox system is one (1) year.