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DH Instruments MOLSTIC-S Operation And Maintenance Manual

Engineered mounting systems for molbloc-s mass flow elements
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molstic-S™
Engineered Mounting Systems
®
for molbloc-S
Mass Flow Elements
Operation and Maintenance Manual
© 2004-2007 DH Instruments, a Fluke Company

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Summary of Contents for DH Instruments MOLSTIC-S

  • Page 1 Engineered Mounting Systems ® for molbloc-S Mass Flow Elements Operation and Maintenance Manual © 2004-2007 DH Instruments, a Fluke Company...
  • Page 2 Products described in this manual are manufactured under international patents and one or more of the following U.S. patents: 5,142,483, 5,257,640, 5,331,838, 5,445,035. Other U.S. and international patents pending. DH Instruments, DH, DHI, molbloc, molbloc-L, molbloc_S, molbox1, molstic, molstic-L and molstic-S, are trademarks, registered and otherwise, of DH Instruments, a Fluke Company.

  • Page 3: Table Of Contents

    1.2.2.12 MOLSTIC-S, DUAL 1/4 IN., WITH LOW- OR MID- FLOW METERING VALVE AND REGULATION..13 I N S T A L L A T I O N ..............1 5 UNPACKING AND INSPECTION ......................15...
  • Page 4 O P T I O N S A N D U P G R A D E S ..........3 5 REGULATOR UPGRADE TO MOLSTIC-S ...................35 UPGRADE OF MOLSTIC-S WITH 1/4 IN. METERING VALVE ............35 UPGRADE OF SINGLE MOLSTIC-S TO DUAL CHANNEL ..............35 M O L S T I C - S M A I N T E N A N C E A N D R E C O M M E N D A T I O N S .
  • Page 5 Figure 10. molstic-S, Dual 1/4 in., with Low- or Mid-Flow Metering Valve ..........11 Figure 11. molstic-S, Single 1/4 in., with Low- or Mid-Flow Metering Valve and Regulation ....12 Figure 12. molstic-S, Dual 1/4 in., with Low- or Mid-Flow Metering Valve and Regulation ....... 13 Figure 13.
  • Page 6 MOLSTIC-S™ OPERATION AND MAINTENANCE MANUAL © 2004-2007 DH Instruments, a Fluke Company Page...

  • Page 7: 1. Introduction

    Supply Assembly (P/N 401876 or 401877) when calibrating this type of device. In order to provide flexibility, the molstic-S is supplied with 50 cm of PFA tubing (either 1/4 in. or 1/2 in. OD) for use in making connections to the gas supply or to the DUT. Ensure that the safe operating pressure of 1 MPa (150 psig) is not exceeded when using this tubing.

  • Page 8: Component Identification Of The Available Molstic-S Configurations

    Inlet adaptor – 1/4 in. tube x 1/4 in. male VCR Particulate filter, 2 micron Flow shut-off/metering valve 50 cm of clear PFA tubing is included with the molstic-S in order to provide versatility in the connection of DUT’s and inlet supply plumbing. © 2004-2007 DH Instruments, a Fluke Company...

  • Page 9: Molstic-S, Single 1/2 In., Standard Configuration

    Inlet adaptor – 1/2 in. tube x 1/2 in. male VCR Flow shut-off/metering valve 50 cm of clear PFA tubing is included with the molstic-S in order to provide versatility in the connection of DUT’s and inlet supply plumbing. Page 3...

  • Page 10: Molstic-S, Dual 1/4 In., Standard Configuration

    Particulate filter, 2 micron Flow shut-off/metering valve, 2 ea. 50 cm of clear PFA tubing is included with the molstic-S in order to provide versatility in the connection of DUT’s and inlet supply plumbing. © 2004-2007 DH Instruments, a Fluke Company...

  • Page 11: Molstic-S, Dual 1/2 In., Standard Configuration

    Inlet adaptor – 1/2 in. tube x 1/2 in. male VCR Flow shut-off/flow metering valve, 2 ea. 50 cm of clear PFA tubing is included with the molstic-S in order to provide versatility in the connection of DUT’s and inlet supply plumbing.

  • Page 12: Molstic-S, Single 1/4 In., With Regulation

    Pressure reducing regulator/back pressure regulator Particulate filter, 2 micron Flow shut-off/metering valve 50 cm of clear PFA tubing is included with the molstic-S in order to provide versatility in the connection of DUT’s and inlet supply plumbing. © 2004-2007 DH Instruments, a Fluke Company...

  • Page 13: Molstic-S, Single 1/2 In., With Regulation

    (includes stem with 1/2 in. SWG, not shown) Pressure reducing regulator/back pressure regulator Flow shut-off/metering valve 50 cm of clear PFA tubing is included with the molstic-S in order to provide versatility in the connection of DUT’s and inlet supply plumbing. Page 7...

  • Page 14: Molstic-S, Dual 1/4 In., With Regulation

    Particulate filter, 2 micron Flow shut-off/metering valve, 2 ea. 50 cm of clear PFA tubing is included with the molstic-S in order to provide versatility in the connection of DUT’s and inlet supply plumbing. © 2004-2007 DH Instruments, a Fluke Company...

  • Page 15: Molstic-S, Dual 1/2 In., With Regulation

    (includes stem with 1/2 in. SWG, not shown) Pressure reducing regulator/back pressure regulator Flow shut-off/metering valve, 2 ea. 50 cm of clear PFA tubing is included with the molstic-S in order to provide versatility in the connection of DUT’s and inlet supply plumbing. Page 9...

  • Page 16: Molstic-S, Single 1/4 In., With Low- Or Mid- Flow Metering Valve

    Particulate filter, 2 micron Precision flow metering valve Flow shut-off/metering valve 50 cm of clear PFA tubing is included with the molstic-S in order to provide versatility in the connection of DUT’s and inlet supply plumbing. © 2004-2007 DH Instruments, a Fluke Company...

  • Page 17: Molstic-S, Dual 1/4 In., With Low- Or Mid- Flow Metering Valve

    Particulate filter, 2 micron Precision flow metering valve Flow shut-off/metering valve, 2 ea. 50 cm of clear PFA tubing is included with the molstic-S in order to provide versatility in the connection of DUT’s and inlet supply plumbing. Page 11...

  • Page 18: Molstic-S, Single 1/4 In., With Low- Or Mid- Flow Metering Valve And Regulation

    Precision flow metering valve Flow shut-off/flow metering valve 50 cm of clear PFA tubing is included with the molstic-S in order to provide versatility in the connection of DUT’s and inlet supply plumbing. © 2004-2007 DH Instruments, a Fluke Company...

  • Page 19: Molstic-S, Dual 1/4 In., With Low- Or Mid- Flow Metering Valve And Regulation

    Particulate filter, 2 micron Precision flow metering valve Flow shut-off/flow metering valve, 2 ea. 50 cm of clear PFA tubing is included with the molstic-S in order to provide versatility in the connection of DUT’s and inlet supply plumbing. Page 13...
  • Page 20 MOLSTIC-S™ OPERATION AND MAINTENANCE MANUAL © 2004-2007 DH Instruments, a Fluke Company Page...

  • Page 21: I N S T A L L A T I O

    UNPACKING AND INSPECTION 2.1.1 REMOVING FROM PACKAGING The molstic-S is delivered, along with its standard accessories, in a corrugated container with foam-in-place inserts. Remove the molstic-S and its accessories from the shipping container and remove each item from its protective plastic bag.

  • Page 22: Site Requirements

    MOLSTIC-S™ OPERATION AND MAINTENANCE MANUAL SITE REQUIREMENTS The molstic-S should be installed on a stable work surface at a convenient height. The bottom edge of the molstic-S platform has a rubberized material that will protect the work surface from marring and scratching.

  • Page 23: Figure 13. Replacing Molbloc-S Flanges

    Tighten each of the screws in a “star” pattern a little at a time. Finish by tightening to a torque value of 3 Nm on each screw. Page 17 © 2004-2007 DH Instruments, a Fluke Company...

  • Page 24: Installation Of Molbloc-S Onto Molstic-S

    MOLSTIC-S™ OPERATION AND MAINTENANCE MANUAL 2.3.2.2 INSTALLATION OF MOLBLOC-S ONTO MOLSTIC-S Place the molbloc-S into the cradles on the molstic-S, making sure that its orientation matches the flow direction of the molstic-S. Figure 14. Installation of molbloc-S onto molstic-S 2.3.2.2.1 molbloc-S Inlet Fitting Connection The inlet fitting to the molbloc-S utilizes the VCR face seal type connection.

  • Page 25: Figure 15. Molbloc-S Vcr Face Seal Connection

    To change the molbloc-S element, break the VCR face seal inlet connection. The O-ring seal is reusable but should be examined for damage that could cause a leak. Place the new molbloc-S into the cradles, and make the VCR face seal connection. Page 19 © 2004-2007 DH Instruments, a Fluke Company...

  • Page 26: Molstic-S Interconnections

    DUT and the molbloc. The gas supply to the molstic-S has the following requirements: • The gas supply must be clean and free of particulate contamination in order to avoid damage to the molbloc.

  • Page 27: Molstic-S Use With Dhi Supplied Regulators

    DHI also offers the supply only platform that includes the regulator with a quick connect inlet, and a shut-off/metering valve on the outlet. P/Ns 401876 and 401877 are compatible with the 1/4 in. and 1/2 in. molstic-S, and allow additional flexibility in the plumbing location of the DUT. The regulators supplied by DHI were chosen for their superior performance and compatibility with the molbloc-S operation methods.

  • Page 28: Molstic-S Use With Regulators Not Supplied By Dhi

    MOLSTIC-S USE WITH REGULATORS NOT SUPPLIED BY DHI The inlet gas supply to the molstic-S must be suitably regulated prior to connection to the inlet of the molbloc-S plumbing. In addition, a shut-off valve should be used downstream of the regulator in order to allow for system leak testing.

  • Page 29: Figure 18. Molstic-S With Dut Upstream

    Use inline particulate filters: Since the smaller molbloc-S elements that are compatible with the 1/4 in. molstic-S have quite small passages, the 1/4 in. molstic-S comes with a 2 micron particulate filter. There is a filter kit available from DHI for use between the DUT and the inlet of the 1/2 in.

  • Page 30: Inlet Connection - Molstic-S Use With Dut Downstream

    2.4.3 INLET CONNECTION - MOLSTIC-S USE WITH DUT DOWNSTREAM Connect the Gas Supply: Connect the gas supply to the inlet fitting of the molstic-S using suitable means and compatible fittings. Following instructions in Section 2.4.1. 2.4.4 OUTLET CONNECTION - MOLBLOC-S OUTLET CONNECTION The outlet fitting of the molbloc-S utilizes the ISO-KF Style vacuum flange.

  • Page 31: Making And Breaking Procedure For Molbloc-Siso-Kf Vacuum Flange Connection

    DUTs that have built in flow control capability, such as MFCs, (and are to be tested in flow control mode) must be tested in the upstream location. Install this type of DUT upstream of the molbloc-S only. Page 25 © 2004-2007 DH Instruments, a Fluke Company...

  • Page 32: Table 3. Molbloc-S Adaptor Kits

    MOLSTIC-S™ OPERATION AND MAINTENANCE MANUAL Flange, ISO-KF style, 25 mm Tee assembly, downstream Figure 21. molstic-S with DUT Upstream The outlet flange of the molbloc-S or the Downstream Tee Assembly can be adapted to other types of connections. Adapt to molbloc-S Outlet Fitting: When testing a DUT downstream of the molbloc-S, connect the DUT’s inlet plumbing to the outlet of the molbloc-S.
  • Page 33 DUT directly on its platform. For the sake of flexibility, the molstic-S is supplied with 50 cm of PFA tubing to help make the inlet and outlet connections. Use of the adjustable DUT stand (P/N 401934) will also facilitate the alignment of the centerline of the DUT’s inlet plumbing connection with that of the molstic-S plumbing.
  • Page 34 MOLSTIC-S™ OPERATION AND MAINTENANCE MANUAL © 2004-2007 DH Instruments, a Fluke Company Page...

  • Page 35: M O L S T I C - S O P E R A T I O

    600 kPaa (87 psia) for molbox1-A700K; 250 kPaa (36 psia) for molbox1-A350K. Once the test system with molbloc-S and molstic-S has been completely interconnected, the following procedure should be used for its safe pressurization and operation.

  • Page 36: Regulator Maximum Pressure Adjustment

    Rotating the knob in the clockwise direction raises the upstream (control) pressure. Counterclockwise rotation, coupled with venting of the downstream side of the regulator plumbing, lowers the upstream pressure. molstic-S regulators are NOT self-venting therefore the upstream pressure will not be adjusted with rotation of the control knob unless the downstream gas is allowed to escape.

  • Page 37: System Pressurization

    Turn on gas supply: Apply the supply pressure to the pressure control regulator. Open molstic-S flow control/shut-off valve(s): Valves must be open to allow test gas to flow through the system.

  • Page 38: Leak Check Recommendations

    600 kPaa (87 psia) for molbox1-A700K, 250 kPaa (36 psia) for molbox1-A350K models. Once the test system with molbloc-S and molstic-S has been completely interconnected, and pressurized to the desired leak check pressure use the following procedure.

  • Page 39: Dut Without Flow Control Capability

    Open molstic-S shut off valve(s): All shut off valves must be open to allow test gas to fill the test system. Adjust system flow rate: Rotate the flow control valve adjustment knob to set the desired flow rate on the molbloc-S.
  • Page 40 MOLSTIC-S™ OPERATION AND MAINTENANCE MANUAL © 2004-2007 DH Instruments, a Fluke Company Page...

  • Page 41: O P T I O N S A N D U P G R A D E

    The 1/4 in. low-flow and 1/4 in. mid-flow metering valve kits provide higher precision flow control capability.
  • Page 42 MOLSTIC-S™ OPERATION AND MAINTENANCE MANUAL © 2004-2007 DH Instruments, a Fluke Company Page...

  • Page 43: M O L S T I C - S M A I N T E N A N C E A N D R E C O M M E N D A T I O N

    5. MOLSTIC-S MAINTENANCE AND RECOMMENDATIONS FILTER CLEANING The 1/4 in. molstic-S filter is a sealed 2 micron pleated mesh filter (Swagelok SS-4FW-VCR-2). It can be cleaned by backflushing with clean gas, but must be removed from the molstic-S. When removing, cleaning and re-installing the filter the metallic VCR gaskets (P/N102183) must be replaced and all manufacturers’...
  • Page 44 MOLSTIC-S™ OPERATION AND MAINTENANCE MANUAL © 2004-2007 DH Instruments, a Fluke Company Page...

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