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Fluke MOLBOX1 PLUS - V 6.00 Operation And Maintenance Manual

Molbloc terminal (ver. 6.00 and higher)
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molbox1+™/molbox1+S
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molbloc
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(Ver. 6.00 and Higher)
Operation and Maintenance Manual
© 1995 - 2010 Fluke Corporation, DH Instruments Division

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Summary of Contents for Fluke MOLBOX1 PLUS - V 6.00

  • Page 1 ® molbloc Terminal (Ver. 6.00 and Higher) Operation and Maintenance Manual © 1995 - 2010 Fluke Corporation, DH Instruments Division...
  • 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 Fluke Corporation, DH Instruments Division 4765 East Beautiful Lane Phoenix AZ 85044-5318 USA.

  • Page 3: Table Of Contents

    Channel A & Channel B ......................33 3.1.2 molbloc-L and molbloc-S Operation ..................... 33 3.1.3 Flow Ready/Not Ready Indication ......................34 3.1.3.1 molbloc-L Operation ..........................34 3.1.3.2 molbloc-S Operation..........................34 Page I © 1995 - 2010 Fluke Corporation, DH Instruments Division...
  • Page 4 <2level> ..............................98 3.6.2.1 Security Levels ............................. 98 3.6.3 <3UL> ..............................101 3.6.3.1 Upper Limit Alarm and Sequence ......................102 3.6.4 <4cal>..............................102 3.6.5 <5Prefs> ..............................102 3.6.5.1 <1ScrSVR> ............................103 3.6.5.2 <3ID> ..............................103 © 1995 - 2010 Fluke Corporation, DH Instruments Division Page II...

  • Page 5: Table Of Contents

    T r o u b l e s h o o t i n g ............1 5 7 Overview ............................. 157 Page III © 1995 - 2010 Fluke Corporation, DH Instruments Division...
  • Page 6 G l o s s a r y ..............1 7 3 © 1995 - 2010 Fluke Corporation, DH Instruments Division...

  • Page 7: Tables

    Table 43. Pressure Unit Conversions ...................... 163 Table 44. Temperature Unit Conversion ....................163 Table 45. Conversions from kg/s to sccm at 0 °C for Various Gases ............164 Page V © 1995 - 2010 Fluke Corporation, DH Instruments Division...
  • Page 8 CHANNEL A, BPR OFF ......................108 Figure 13. Status Byte Register ....................... 139 Figure 14. molbox1+ Internal Pneumatic Schematic - ................145 Figure 15. Cable Driver Ports ........................167 © 1995 - 2010 Fluke Corporation, DH Instruments Division Page VI...

  • Page 9: About This Manual

    “Note” is used throughout the manual to identify operating and applications advice and additional explanations. [ ] Indicates direct function keys (e.g., [RANGE]). < > Indicates molbox1+ screen displays (e.g., <1yes>). Page VII © 1995 - 2010 Fluke Corporation, DH Instruments Division...
  • Page 10 MOLBOX1+™/MOLBOX1+S, MOLBLOC TERMINAL OPERATION AND MAINTENANCE MANUAL Notes © 1995 - 2010 Fluke Corporation, DH Instruments Division Page VIII...

  • Page 11: Introduction

    (MFCs) is needed. A second model, molbox RFM, is available for applications where a compact presentation and lower cost are the most dominant requirements. molbox1+ replaces the Fluke/DHI molbox1 product line. molbox1+ introduces several product improvements over molbox1 including: •...

  • Page 12: Molbloc Flow Elements

    6000 or higher. Most older molbloc-L elements are eligible for upgrade to this hardware/version 6.00 format by Fluke/DHI. © 1995 - 2010 Fluke Corporation, DH Instruments Division...

  • Page 13: Molbloc-S Flow Element

    New calibration data structure and premium calibration options for molbloc-S were also introduced along with molbox1+. molbloc-S elements produced with this support will have serial number of 4000 or higher. Older molbloc-S elements are eligible for upgrade to version 6.00 format by Fluke/DHI. Specifications 1.2.1...

  • Page 14: Reference Pressure Transducer (Rpt) Specifications

    Accuracy ± 0.05 °C Resolution 0.01 °C The molbox1+ internal resistance measurement system is automatically calibrated using reference 100 and 110 Ω (± 0.01 %) resistors (see Section 5.4). © 1995 - 2010 Fluke Corporation, DH Instruments Division Page 4...

  • Page 15: Mfc Control Function (Optional) Specifications

    ± 0.007 % FS under 10 % FS ± 0.09 % of reading from 10 to 100 % FS, Stability ± 0.009 % FS under 10 % FS (1 year) Page 5 © 1995 - 2010 Fluke Corporation, DH Instruments Division...
  • Page 16 Check for availability before ordering calibrations. The molbloc-L pressure dependent calibration types are summarized in Table 1. © 1995 - 2010 Fluke Corporation, DH Instruments Division Page 6...

  • Page 17: Table 1. Molbloc-L Pressure Dependent Calibration Types

    5,000 10,000 30,000 100,000 Nitrous Oxide 1,000 5,000 10,000 20,000 60,000 4,000 30,000 1,100 1,050 3,400 Octafluorocyclobutane 1,700 Oxygen 1,000 5,000 10,000 30,000 80,000 See Table 3 for footnotes. Page 7 © 1995 - 2010 Fluke Corporation, DH Instruments Division...

  • Page 18: Table 3: Molbloc-L Ranges With High Pressure Calibrations

    5 kPa (1 kPa in the case of the 1E5 molbloc), therefore calibration with that gas is not useful. Due to low vapor pressure, only downstream calibration type is available. The operating pressure range is greater than the vapor pressure value for this gas. © 1995 - 2010 Fluke Corporation, DH Instruments Division Page 8...

  • Page 19: Molbloc-S

    Depends on molbloc-S pressure dependent calibration type (see Section 1.2.5.2.2) Resolution 0.0015 % of FS ± 0.05 % of reading Linearity ± 0.05 % of reading Repeatability ± 0.06 % of reading Precision Page 9 © 1995 - 2010 Fluke Corporation, DH Instruments Division...
  • Page 20 [3] Measurement uncertainty (accuracy): Maximum deviation of the molbox1+ flow indication from the true value of the flow through the molbloc including precision, stability and DHI calibration standard measurement uncertainty. © 1995 - 2010 Fluke Corporation, DH Instruments Division Page 10...

  • Page 21: Table 4: Molbloc-S Calibration Types

    (choked) flow (see Section 3.1.5). Page 11 © 1995 - 2010 Fluke Corporation, DH Instruments Division...
  • Page 22 KF = Pressure to Flow Conversion Ratio, sccm/kPa To estimate a flow in a given gas at a given pressure: Flow(slm) = KF * Pressure in kPa absolute / 1000 * Gas Ratio © 1995 - 2010 Fluke Corporation, DH Instruments Division Page 12...

  • Page 23: Table 5: N2. Molbloc-S Flow In Nitrogen At Various Molbloc Upstream Pressures

    20°C. Flow values at a given pressure may vary by up to ± 2% due to flowpath machining tolerances. [3] Minimum upstream pressure to achieve critical flow with atmospheric pressure (approximately 100 kPa) downstream of molbloc-S (no vacuum). Page 13 © 1995 - 2010 Fluke Corporation, DH Instruments Division...

  • Page 24: Table 7: He. Molbloc-S Flow In Helium At Various Molbloc Upstream Pressures

    [3] Minimum upstream pressure to achieve critical flow with atmospheric pressure (approximately 100 kPa) downstream of molbloc-S (no vacuum). [4] Operation in this gas is limited to lower pressures due to the gas vapor pressure. © 1995 - 2010 Fluke Corporation, DH Instruments Division Page 14...

  • Page 25: Table 9: Xe. Molbloc-S Flow In Xenon At Various Molbloc Upstream Pressures

    [3] Minimum upstream pressure to achieve critical flow with atmospheric pressure (approximately 100 kPa) downstream of molbloc-S (no vacuum). [4] Operation in this gas is limited to lower pressures due to the gas vapor pressure. Page 15 © 1995 - 2010 Fluke Corporation, DH Instruments Division...

  • Page 26: Table 11: C2H6. Molbloc-S Flow In Ethane At Various Molbloc Upstream Pressures

    [3] Minimum upstream pressure to achieve critical flow with atmospheric pressure (approximately 100 kPa) downstream of molbloc-S (no vacuum). [4] Operation in this gas is limited to lower pressures due to the gas vapor pressure. © 1995 - 2010 Fluke Corporation, DH Instruments Division Page 16...

  • Page 27: Table 13: H2. Molbloc-S Flow In Hydrogen At Various Molbloc Upstream Pressures

    20°C. Flow values at a given pressure may vary by up to ± 2% due to flowpath machining tolerances. [3] Minimum upstream pressure to achieve critical flow with atmospheric pressure (approximately 100 kPa) downstream of molbloc-S (no vacuum). Page 17 © 1995 - 2010 Fluke Corporation, DH Instruments Division...

  • Page 28: Table 15: C3H8. Molbloc-S Flow In Propane At Various Molbloc Upstream Pressures

    [3] Minimum upstream pressure to achieve critical flow with atmospheric pressure (approximately 100 kPa) downstream of molbloc-S (no vacuum). [4] Operation in this gas is limited to lower pressures due to the gas vapor pressure. © 1995 - 2010 Fluke Corporation, DH Instruments Division Page 18...

  • Page 29: Table 17: C2F6. Molbloc-S Flow In Hexafluoroethene At Various Molbloc Upstream Pressures

    [3] Minimum upstream pressure to achieve critical flow with atmospheric pressure (approximately 100 kPa) downstream of molbloc-S (no vacuum). [4] Operation in this gas is limited to lower pressures due to the gas vapor pressure. Page 19 © 1995 - 2010 Fluke Corporation, DH Instruments Division...

  • Page 30: Table 19: Air. Molbloc-S Flow In Air At Various Molbloc Upstream Pressures

    [3] Minimum upstream pressure to achieve critical flow with atmospheric pressure (approximately 100 kPa) downstream of molbloc-S (no vacuum). [4] Operation in this gas is limited to lower pressures due to the gas vapor pressure. © 1995 - 2010 Fluke Corporation, DH Instruments Division Page 20...

  • Page 31: Table 21: Co. Molbloc-S Flow In Carbon Monoxide At Various Molbloc Upstream Pressures

    [3] Minimum upstream pressure to achieve critical flow with atmospheric pressure (approximately 100 kPa) downstream of molbloc-S (no vacuum). [4] Operation in this gas is limited to lower pressures due to the gas vapor pressure. Page 21 © 1995 - 2010 Fluke Corporation, DH Instruments Division...

  • Page 32: Table 23: C4F8. Molbloc-S Flow In Octafluorocyclobutane1 At Various Molbloc Upstream Pressures

    20°C. Flow values at a given pressure may vary by up to ± 2% due to flowpath machining tolerances. [3] Minimum upstream pressure to achieve critical flow with atmospheric pressure (approximately 100 kPa) downstream of molbloc-S (no vacuum). © 1995 - 2010 Fluke Corporation, DH Instruments Division Page 22...
  • Page 33 40 mm diameter ISO-KF nipple is supplied with 5E3-S and 1E4-S molblocs. [2] Default connector type is listed. Additional upstream connector options may be available. Contact your DHI Sales Representative for details. Page 23 © 1995 - 2010 Fluke Corporation, DH Instruments Division...

  • Page 34: Front And Rear Panels

    Pressure Connections (Channel B)   MFC Analog Control Connection molbloc Pressure Connections (Channel A)   Remote Communication for External Device (RS232) molbloc Electrical Connection (Channel A) Figure 2. Rear Panel © 1995 - 2010 Fluke Corporation, DH Instruments Division Page 24...

  • Page 35: I N S T A L L A T I O

    Four rubber feet caps are provided in the accessories and can be installed if desired. These prevent the unit from slipping on smooth surfaces. Page 25 © 1995 - 2010 Fluke Corporation, DH Instruments Division...

  • Page 36: Initial Setup

    Power Connection Connect the power cable supplied to molbox1+ and to a power source. Power requirements are 85 to 264 VAC, 50 to 60 Hz, 22 VA max. consumption. © 1995 - 2010 Fluke Corporation, DH Instruments Division Page 26...

  • Page 37: Molbox1+ To Molbloc Connections

    300kPa absolute/200 kPa gauge (44 psig/29 psig). molbox1+ A700K overpressure limit is 650 kPa absolute/550 kPa gauge (95 psia/80 psig). Overpressure can damage the molbox1+ internal RPTs (see Section 1.2.2, 3.1.4). Page 27 © 1995 - 2010 Fluke Corporation, DH Instruments Division...

  • Page 38: Vacuum Supply (Molbloc-S Only)

    If molbox1+ is being interfaced to a computer, connect an RS232 cable to molbox1+ COM1 or an IEEE-488 cable (cables not supplied) to the molbox1+ IEEE-488 interface. Configure the interface (see Section 3.6.6). © 1995 - 2010 Fluke Corporation, DH Instruments Division Page 28...

  • Page 39: Mfc Control Option Connection

    ± 0.2 °C. If the two readings disagree by more than ± 0.2 °C, there may be a problem with the molbloc or the molbox1+ TEMPERATURE MEASUREMENT function and service may be required. Page 29 © 1995 - 2010 Fluke Corporation, DH Instruments Division...

  • Page 40: Check The Mfc Control Function (Optional)

    This filter assembly should be considered a last line of defense against contamination and additional filtration should always be considered. • Troubleshooting: For information on typically encountered start-up and operational issues, see Section 6. © 1995 - 2010 Fluke Corporation, DH Instruments Division Page 30...

  • Page 41: Short Term Storage

    2. INSTALLATION Short Term Storage The following is recommended for short term storage of molbox1+: • Vent the molbox1+ pressure ports. • Turn off the power. Page 31 © 1995 - 2010 Fluke Corporation, DH Instruments Division...
  • Page 42 MOLBOX1+™/MOLBOX1+S, MOLBLOC TERMINAL OPERATION AND MAINTENANCE MANUAL Notes © 1995 - 2010 Fluke Corporation, DH Instruments Division Page 32...

  • Page 43: O P E R A T I O

    The only setting that exists for both molbloc types, but is stored independently for each type, is the tare value. See section 3.4.4.1 for details on the tare function. Page 33 © 1995 - 2010 Fluke Corporation, DH Instruments Division...

  • Page 44: Flow Ready/Not Ready Indication

    Ready indicator becomes <P>. The Ready/Not Ready indicators based on flow stability are also used in molbloc-S operation, but the <P> indicator takes priority over other indicators. © 1995 - 2010 Fluke Corporation, DH Instruments Division Page 34...

  • Page 45: Reference Pressure Transducer (Rpt) Overpressure

    Since mass flow through molbloc-S is proportional to the upstream absolute pressure, the flow range for the molbloc in this application is defined by the BPR Page 35 © 1995 - 2010 Fluke Corporation, DH Instruments Division...

  • Page 46: Main Run Screen

    The MAIN run screen display applies to the molbloc on the active molbloc channel indicated by the red LED below the molbox1+ display (A or B). The appearance of the MAIN run screen differs depending on whether the active molbloc is a molbloc-L or a molbloc-S. © 1995 - 2010 Fluke Corporation, DH Instruments Division Page 36...

  • Page 47: Molbloc-L Operation

    The MAIN run screen may be slightly different when MFC control is in use or an A_B function is in use (see Sections 3.4.8, 3.4.7). • When a number is too large to show in the allocated display space, molbox1+ displays <********>. Page 37 © 1995 - 2010 Fluke Corporation, DH Instruments Division...

  • Page 48: Molbloc-S Operation

    <D>: Same as molbloc-L (see Section 3.1.3.1). <DISPLAY MODE DATA>: Information displayed depends on current display mode (see Section 3.4.6). <MFC1R>: Same as molbloc-L (see Section 3.1.3.1). © 1995 - 2010 Fluke Corporation, DH Instruments Division Page 38...

  • Page 49: Manual Operation

    Menu selections can be made by pressing the number of the selection directly or by pressing [←] and [→] to place the cursor on the number of the desired selection and pressing [ENTER]. Page 39 © 1995 - 2010 Fluke Corporation, DH Instruments Division...

  • Page 50: Direct Function Keys Summary

    Set flow measurement gas. This is also the key used to access and select named gas calibrations on a molbloc. Set flow measurement unit. Choice of units can be customized. © 1995 - 2010 Fluke Corporation, DH Instruments Division Page 40...

  • Page 51: Direct Function Keys

    To enable a gas conversion factor press [K] from any run screen. The display is: 1on 2off K Factor: If <2off> is selected, no conversion factor will be applied. If <1on> is selected, the next screen is: 1.00000 Page 41 © 1995 - 2010 Fluke Corporation, DH Instruments Division...

  • Page 52: Gas]

    NO associated uncertainty or tolerance. The operation of the GAS function, is different for molbloc-L and molbloc-S due to the support of humid air measurements with molbloc-S. They are described separately below. © 1995 - 2010 Fluke Corporation, DH Instruments Division Page 42...

  • Page 53: Molbloc-L Operation

    Select the desired gas. Pressing [ENTER] returns to the last run screen with the selected gas active. The selected gas is always displayed in the upper right hand corner of the MAIN run screen. Page 43 © 1995 - 2010 Fluke Corporation, DH Instruments Division...

  • Page 54: Molbloc-S Operation

    If a correction for W is being applied to air flow measurements, a <W> is placed to the right of the <Air> gas indication in the MAIN run screen. © 1995 - 2010 Fluke Corporation, DH Instruments Division Page 44...
  • Page 55 Pressing [ENTER] returns to the last run screen with the selected gas active. The selected gas is always displayed in the upper right hand corner of the MAIN run screen. Page 45 © 1995 - 2010 Fluke Corporation, DH Instruments Division...

  • Page 56: Unit]

    UNIT function. The six units available under the UNIT function can be customized to include any molbox1+ supported units in any order (see Section 3.5.8). © 1995 - 2010 Fluke Corporation, DH Instruments Division Page 46...

  • Page 57: Mass Flow Vs. Volume Flow

    By design, the molbloc causes the temperature of the gas that flows through the molbloc to take on the molbloc temperature. Therefore, the temperature of the gas as it exits the Page 47 © 1995 - 2010 Fluke Corporation, DH Instruments Division...

  • Page 58: Volumetrically Based Mass Flow Units

    101.325 kPa (14.6959 psia) and temperature of 0 °C (32 °F). Note • Volumetrically based mass flow units reference temperatures other than 0 °C (32 °F) can be defined using user units (see Section 3.4.3.3). © 1995 - 2010 Fluke Corporation, DH Instruments Division Page 48...

  • Page 59: Volumetrically Based Mass Flow Units At Various Reference Temperatures (Uxxx)

    If <2user> is selected, a screen to enter the temperature is presented before continuing. If <1molbloc> is selected, volume flow temperature will automatically be taken as the molbloc temperature. Page 49 © 1995 - 2010 Fluke Corporation, DH Instruments Division...

  • Page 60: Customizing Flow Units Available Under The Unit Function

    <2user> <3perfect> <4vlm> <1mol/s> <1ulm> <1plm> <1ccm> <2kg/s> <2uccm> <2pccm> <2lm> <3mg/s> <3ucfm> <3pcfm> <3lh> <4slm> <4ucfh> <4pcfh> <4m3h> <5sccm> <5um3h> <5plh> <6cfm> <6scfm> <6pm3h> <7cfh> <7scfh> <8slh> <9sm3h> © 1995 - 2010 Fluke Corporation, DH Instruments Division Page 50...

  • Page 61: Tare]

    Press the [←] and [→] keys to move the cursor to access the lines that are NOT visible or directly enter the number of the hidden menu choice if you know it. Page 51 © 1995 - 2010 Fluke Corporation, DH Instruments Division...

  • Page 62: 1Tare

    2. Channel A Low Isolation: Closed 3. Channel B High Isolation: Closed 4. Channel B Low Isolation: Closed 5. Bypass: Open Figure 5. molbox1+ Internal Pneumatic Schematic – TARING CHANNEL A, UPSTREAM molbloc-L OPERATION © 1995 - 2010 Fluke Corporation, DH Instruments Division Page 52...
  • Page 63 Press [ENTER] to activate the new tare and return to the MAIN run screen. Press [ESCAPE] to return to the [TARE] display without activating the new tare, leaving the old tare active. Page 53 © 1995 - 2010 Fluke Corporation, DH Instruments Division...
  • Page 64 The molbloc-S TARE function is available to allow the user to conveniently verify that the two RPT measurements agree within an acceptable tolerance when a common pressure is applied to them. When the TARE function is selected, the © 1995 - 2010 Fluke Corporation, DH Instruments Division Page 54...

  • Page 65: Figure 6. Molbox1+ Internal Pneumatic Schematic - Taring Channel A, Molbloc-S Operation

    The tare screen shows the upstream and downstream RPT readings WITHOUT the current tare applied. The [P&T] screen shows the RPT readings WITH the tare applied (see Section 3.4.5). Page 55 © 1995 - 2010 Fluke Corporation, DH Instruments Division...

  • Page 66: 2Purge

    (deadended) in the molbox1+ in the PURGE configuration. Therefore, it may be desirable to execute the PURGE function more than once to clear these volumes by the pressure changes caused by PURGE execution. © 1995 - 2010 Fluke Corporation, DH Instruments Division Page 56...

  • Page 67: 3Leak Check

    INTERNAL and EXTERNAL LEAK TESTING functions. Page 57 © 1995 - 2010 Fluke Corporation, DH Instruments Division...
  • Page 68 Another alternative is to install the non-sealing quick connectors (P/N 3068652) provided in the molbox accessories (see Section 2.1.2) into the molbox1+ quick connectors. © 1995 - 2010 Fluke Corporation, DH Instruments Division Page 58...

  • Page 69: Figure 8. Molbox1+ Internal Pneumatic Schematic - Leak Check Molbox Channel A

    When the test volume is large, significant leaks may exist without being detected because the pressure decay caused by the leak is reduced. Page 59 © 1995 - 2010 Fluke Corporation, DH Instruments Division...

  • Page 70: Figure 9. Molbox1+ Internal Pneumatic Schematic - System Leak Check - Checking Offset And Stability

    (downstream of the molbloc anxxxxd the DUT if the molbloc/molbox is being used to test another device). Using the molbox1+ display to read the pressure, set the pressure to the normal operating pressure. © 1995 - 2010 Fluke Corporation, DH Instruments Division Page 60...
  • Page 71 RPTs before running the leak check again (see Section 3.4.4.1). Once the 30 second pressure stability/offset 347.587 kPaa 347.583 check has been successfully completed, 0.000 sccm [ENT] molbox1+ displays: Page 61 © 1995 - 2010 Fluke Corporation, DH Instruments Division...
  • Page 72 To run the leak test, select <1run>. molbox1+ actuates internal valves to connect the upstream and downstream RPTs together, so they are both measuring an equal system pressure. (see Figure 10). © 1995 - 2010 Fluke Corporation, DH Instruments Division Page 62...

  • Page 73: Figure 10. Molbox1+ Internal Pneumatic Schematic - System Leak Check On Channel A - Checking Offset And Stability

    Once the pressure has had time to stabilize, press [ENTER]. ENTER to start The next display is: 60 s leak check Press [ENTER] to begin the test Page 63 © 1995 - 2010 Fluke Corporation, DH Instruments Division...

  • Page 74: 4Autoz

    Improper use of the AutoZ function can cause out of tolerance pressure measurements. AutoZ should be used only by qualified personnel for the purpose of rezeroing the molbox1+ reference pressure transducer absolute pressure measurement function. © 1995 - 2010 Fluke Corporation, DH Instruments Division Page 64...
  • Page 75 The best day to day reference is a properly calibrated DHI RPM4 with a BA100K RPT interfaced directly as an external device to the molbox1+ COM2 port. Page 65 © 1995 - 2010 Fluke Corporation, DH Instruments Division...
  • Page 76 [ENT] to activate the new value(s). offset Press [ESC] to abandon changes. Note The value of P is always displayed and entered in Pascal (Pa). offset © 1995 - 2010 Fluke Corporation, DH Instruments Division Page 66...
  • Page 77 Note • Allow the molbox1+ to stabilize at atmospheric pressure and ambient temperature for 10 to 15 minutes before running AutoZ. Page 67 © 1995 - 2010 Fluke Corporation, DH Instruments Division...
  • Page 78 COM2 to act as the AutoZ reference (source of Pstd,0) (see Section 3.4.4.4, PRINCIPLE). The RPMx is read and the new P is calculated automatically. offset To access run AutoZ by COM2 press [TARE], <4AutoZ>, <4run>, <2COM2>. © 1995 - 2010 Fluke Corporation, DH Instruments Division Page 68...

  • Page 79: 5Bpr> (Molbloc-S Operation Only)

    BPR mode is selected, the BPR value is not always measured. The BPR function allows the user to measure and display BPR directly at any time regardless of which BPR mode is selected. Page 69 © 1995 - 2010 Fluke Corporation, DH Instruments Division...

  • Page 80: P&T] (Pressure And Temperature)

    Reynolds number of the flow through the molbloc. The molbox1+’s current pressure and temperature readings as well as the Reynolds number of the current flow can be displayed using the P&T function. © 1995 - 2010 Fluke Corporation, DH Instruments Division Page 70...

  • Page 81: Molbloc-L Operation

    The temperature measured by the downstream molbloc platinum resistance thermometer in the current unit of measure. To leave the P&T function and return to the MAIN run screen, press [ESCAPE]. Page 71 © 1995 - 2010 Fluke Corporation, DH Instruments Division...

  • Page 82: Display]

    Blanks out the second line of the display (see Section 3.4.6.8). This function is used when a simple display of flow measured by the molbox1+, without additional information, is desired. © 1995 - 2010 Fluke Corporation, DH Instruments Division Page 72...

  • Page 83: 1Rate

    NO affect on the stability setting or the Ready/Not Ready condition. • To go to a DISPLAY other than RATE, press [DISPLAY] and make a new DISPLAY choice. Page 73 © 1995 - 2010 Fluke Corporation, DH Instruments Division...

  • Page 84: 2Avg> (Average)

    R 0.0025 18 sec Current rate of change of flow in flow unit of measure/second.. 3.4.6.3 <3 Hi/Lo>  PURPOSE To activate the HI/LO DISPLAY. Note See Section 3.4.6, PRINCIPLE. © 1995 - 2010 Fluke Corporation, DH Instruments Division Page 74...

  • Page 85: 4Total> (Totalizer)

    Edit field for time over which to totalize (hh:mm:ss). 00:10:00 Default period is 00:10:00; maximum 99:59:59. Edit the totalizing period as desired. Pressing [ENTER] returns to the MAIN run screen with the TOTALIZER DISPLAY active. Page 75 © 1995 - 2010 Fluke Corporation, DH Instruments Division...
  • Page 86 [ENTER] or [ESCAPE] while totalizing (see Viewing a Split Total and/or Starting a New Totalizing Run with a New Run Time below in this section). © 1995 - 2010 Fluke Corporation, DH Instruments Division Page 76...

  • Page 87: 5Unit

    UNIT selections as well as the UNIT DISPLAY selection. Therefore, it is not possible to simultaneously display user units or volume units with different reference temperatures Page 77 © 1995 - 2010 Fluke Corporation, DH Instruments Division...

  • Page 88: 6Deviation

    % deviations (D) are measured by the DEVIATION DISPLAY following: D = (current flow – target) x 100 target • To go to a DISPLAY other than DEVIATION, press [DISPLAY] and make a new DISPLAY choice. © 1995 - 2010 Fluke Corporation, DH Instruments Division Page 78...
  • Page 89 It is not converted to the new unit. • To go to a DISPLAY other than DEVIATION, press [DISPLAY] and make a new DISPLAY choice. Page 79 © 1995 - 2010 Fluke Corporation, DH Instruments Division...

  • Page 90: 7Freeze

    Selecting <8clean> returns to the MAIN run screen with the CLEAN DISPLAY active. With the CLEAN DISPLAY active, the MAIN run screen is: Standard MAIN run screen top line. * 101.45 sccm “Clean” second line. © 1995 - 2010 Fluke Corporation, DH Instruments Division Page 80...

  • Page 91: [A/B]

    The MFC control function is an optional feature of molbox1+ that allows setting and reading an external MFC with analog voltage or current signals. If the molbox1+ does not include the MFC control function, [MFC] has no function. Page 81 © 1995 - 2010 Fluke Corporation, DH Instruments Division...

  • Page 92: Mfc Run Screens

    MFC set point set by the molbox1+. MFC output measured by the molbox1+. Unit of measure of MFC setpoint and output (V, mA, % FS or blank if flow units). © 1995 - 2010 Fluke Corporation, DH Instruments Division Page 82...

  • Page 93: Mfc Profiles

    MFC calculated using the definition of analog range, flow range and flow units contained in the MFC profile. Page 83 © 1995 - 2010 Fluke Corporation, DH Instruments Division...

  • Page 94: Res]

    To change the stability limit that serves as the criterion for the flow Ready/Not Ready indication (see Sections 3.5.2 and 3.1.3). <3adj> To set an adder and multiplier to adjust molbox1+ flow readings (see Section 3.5.3). © 1995 - 2010 Fluke Corporation, DH Instruments Division Page 84...

  • Page 95: 1Molbloc

     OPERATION To access the molbloc function press [SETUP],and <1molbloc>. The function activates for both channels without additional prompts or entries. Page 85 © 1995 - 2010 Fluke Corporation, DH Instruments Division...

  • Page 96: Molbloc-L And Molbloc-S Size And Range Designations

    Table 32. molbloc-S Size and Pressure to Flow Conversion Ratio (K molbloc-S SIZE (sccm/kPa) DESIGNATION 1E1-S 2E1-S 5E1-S 1E2-S 2E2-S 5E2-S 1,000 1E3-S 2,000 2E3-S 5000 5E3-S 10000 1E4-S © 1995 - 2010 Fluke Corporation, DH Instruments Division Page 86...

  • Page 97: 2Stab

    = (calculated flow * FM) + FA If a K factor is active (see Section 3.4.1), the adder and multiplier are applied to the calculated flow before the K factor is applied. Page 87 © 1995 - 2010 Fluke Corporation, DH Instruments Division...

  • Page 98: 4A_B

    There are two A_B modes. In both of these modes molbox automatically switches between the molblocs on its two channels and uses readings from both. The two A_B modes are: © 1995 - 2010 Fluke Corporation, DH Instruments Division Page 88...

  • Page 99: General Operation (Aspects Common To Both A_B Modes)

    A+B and A_B mode are supported only when molblocs of the same type are used. For example molbloc-S and molbloc-S. The option is not available for a molboc-S and molbloc-L combination Page 89 © 1995 - 2010 Fluke Corporation, DH Instruments Division...

  • Page 100: A+B Mode

    When selecting the hardware setup for running an A/B mode comparison, it is © 1995 - 2010 Fluke Corporation, DH Instruments Division Page 90...

  • Page 101: 5Mfc

    MFC profiles are designed to allow the user to set up the profiles of the MFCs typically calibrated by or used with molbox1+ so that they can be conveniently recalled from a lookup table when needed. Page 91 © 1995 - 2010 Fluke Corporation, DH Instruments Division...

  • Page 102: 6Reg

    To clear/reset all MFC profiles, except #1 and #2 factory default profiles, use [SPECIAL], <1reset>, <3mfc>. 3.5.6 <6REG>  PURPOSE To turn the MFC control regulation mode ON and OFF, and to set the regulation period for regulation mode. © 1995 - 2010 Fluke Corporation, DH Instruments Division Page 92...

  • Page 103: 7Flowu

    To customize the selection of flow units of measure that are available for selection from the [UNIT] function key (see Section 3.4.3).  PRINCIPLE/OPERATION See Section 3.4.3.5. 3.5.8 <8PRESU>  PURPOSE To select/change the unit of measure in which molbox1+ displays pressure values. Page 93 © 1995 - 2010 Fluke Corporation, DH Instruments Division...

  • Page 104: 9Tempu

    Select the desired unit. After the unit selection, operation returns to the run screen with the selected temperature unit active. Note See Section 7.1.2 for definition of the temperature unit conversions used by molbox1+. © 1995 - 2010 Fluke Corporation, DH Instruments Division Page 94...

  • Page 105: Special]

    Page 95 © 1995 - 2010 Fluke Corporation, DH Instruments Division...

  • Page 106: 1Sets

    Reference temperature for uxxx units of measure to 0 °C (see Section 3.4.3.3). • Volume flow unit of measure conditions to molbloc for temperature and standard atmospheric pressure for pressure (see Section 3.4.3.4). © 1995 - 2010 Fluke Corporation, DH Instruments Division Page 96...

  • Page 107: 3Mfc

    This includes communications port settings. To access Reset - All, press [SPECIAL] and select <1reset>, <5all>.  Caution Use special caution with this reset as critical calibration data may be altered. Page 97 © 1995 - 2010 Fluke Corporation, DH Instruments Division...

  • Page 108: 2Level

    OPERATION of this section). • The High security level disables remote communications and returns an error message (“ERROR”) to all remote commands. All other security levels have NO effect on remote communications. © 1995 - 2010 Fluke Corporation, DH Instruments Division Page 98...

  • Page 109: Table 34. Security Levels - Functions Not Executed Per Function/Level

    [SPECIAL], <3UL> (change setting) • • [SPECIAL], <4cal> • • • [SPECIAL], <4cal>, <any 3edit> • • [SPECIAL], <5prefs> • • [SPECIAL], <5prefs>, <1ScrSvr> • • • [SPECIAL], <5prefs>, <2ID>, <2edit> Page 99 © 1995 - 2010 Fluke Corporation, DH Instruments Division...
  • Page 110 A factory secondary password can be obtained by contacting a DHI Authorized Service Provider (see Section 7.4). The factory secondary password is different for each molbox1+ and changes each time it is used. © 1995 - 2010 Fluke Corporation, DH Instruments Division Page 100...

  • Page 111: 3Ul

    [ENTER]. See Sections 3.6.3.1, 3.1.4 for additional details. Note UL is molbloc channel specific. There are separate UL settings for molbloc channel A and channel B operation. Page 101 © 1995 - 2010 Fluke Corporation, DH Instruments Division...

  • Page 112: Upper Limit Alarm And Sequence

    <1ScrSvr> View and change the SCREEN SAVER function (see Section 3.6.5.1). <2ID> View and edit the molbox1+ user ID (see Section 3.6.5.2). <3time> View and edit the internal time and date settings (see Section 3.6.5.3). © 1995 - 2010 Fluke Corporation, DH Instruments Division Page 102...

  • Page 113: 1Scrsvr

    Character order going up ([→]) is: blank space, symbols, lower case letters, upper case letters, numbers. After selecting a character, press [ENTER] to activate it and move to the next character field. Page 103 © 1995 - 2010 Fluke Corporation, DH Instruments Division...

  • Page 114: 3Time

    To access the communication port configurations, press [SPECIAL] and select <6remote>. Select <1COM1>, <2COM2>, or <3IEEE-488> to view and/or edit that port’s settings. To access the RS232 self-test press [SPECIAL] and select <6remote>, <4RS232test>. © 1995 - 2010 Fluke Corporation, DH Instruments Division Page 104...

  • Page 115: Com1 And Com2

    COM2→COM1. If COM2→COM1 passes: <PASSED> is displayed briefly followed by the conclusion, <molbox1+ RS232 test has PASSED>. If a test fails: Execution is suspended until [ENTER] is pressed. Page 105 © 1995 - 2010 Fluke Corporation, DH Instruments Division...

  • Page 116: 7Drivers

    Sometimes, when performing a calibration or test, the molbloc is at a different height than the molbox1+’s pressure reference level. This difference in height, frequently called head, can cause a © 1995 - 2010 Fluke Corporation, DH Instruments Division Page 106...

  • Page 117: 9Bpr

    In molbloc-S operation, to select the molbox1+ BPR (back pressure ratio) measurement mode. The molbox1+S BPR measurement mode is always on; there is no option to turn it off or use the auto selection option described below.  PRINCIPLE Page 107 © 1995 - 2010 Fluke Corporation, DH Instruments Division...

  • Page 118: Figure 11. Molbox1+ Internal Pneumatic Schematic - Molbloc-S Operation

    BPR OFF gaining the benefit of using both RPTs upstream. As an alternate to operator switching between BPR © 1995 - 2010 Fluke Corporation, DH Instruments Division Page 108...
  • Page 119 (calculated from empirical testing of molbloc-S choking ratios, see Section 3.1.5), then, once the flow is stable within 0.5 % of reading for 3 seconds, molbox1+ switches to BPR OFF valve state and begins live averaging of the RPT pressure values. Page 109 © 1995 - 2010 Fluke Corporation, DH Instruments Division...
  • Page 120 A_B modes if the current BPR mode is Auto and does not allow the user to select Auto mode when an A_B mode is active (see Section 3.5.4). © 1995 - 2010 Fluke Corporation, DH Instruments Division Page 110...

  • Page 121: Overview

    To establish RS232 communications a standard pin to pin DB-9F to DB-9M RS232 cable must be used to connect the host COM port to molbox1+ COM1. The interface settings of both ports must be the same. Page 111 © 1995 - 2010 Fluke Corporation, DH Instruments Division...

  • Page 122: Com1

    This pin transmits serial data from the molbox1+ to another molbox1+ or another device. Data Terminal Ready. Held at + 5 Volts. This pin is the common return for the TxD and RxD signals. © 1995 - 2010 Fluke Corporation, DH Instruments Division Page 112...

  • Page 123: Ieee-488 (Gpib)

    Read or set the configuration of the COM1 or COM2 port. COUT(=) Read or set the current for an external MFC if in “mA’’ mode. DATE(=) Read or set the internal clock’s date. Page 113 © 1995 - 2010 Fluke Corporation, DH Instruments Division...
  • Page 124 Read voltage sensed at MFC valve test terminal. ZOFFSET:HI Read or set the AutoZ pressure offset, (Poffset), for the high RPT . ZOFFSET:LO Read or set the AutoZ pressure offset, (Poffset), for the low RPT . © 1995 - 2010 Fluke Corporation, DH Instruments Division Page 114...

  • Page 125: Error Messages

    "Argument(s) not allowed" ERR# 46 "The leak is too large" ERR# 47 "Temperature change was too great" ERR# 48 "Offset was excessive. Check tare" ERR# 49 "Possible upstream leak" Page 115 © 1995 - 2010 Fluke Corporation, DH Instruments Division...

  • Page 126: Command Descriptions

    “∗ESR?” Query Reply n (0 to 255) Remark The Standard Event Register contents are cleared after reading. The reply is in decimal numeric form. Example Command: “*ESR?” Reply: “4” © 1995 - 2010 Fluke Corporation, DH Instruments Division Page 116...
  • Page 127 The Status Byte Register reflects the general status of the molbox1+. The ‘MSS’ bit state is represented by bit 6. Query Reply n (0 to 255) Example Command: “*STB?” Reply: “4” Page 117 © 1995 - 2010 Fluke Corporation, DH Instruments Division...

  • Page 128: Molbox1+ Commands

    The humidity ratio is only used if the gas is set to specify AIR. For all other gas types, the ratio is ignored. Example Command: “AIRW=.01” Reply: “0.0100” Errors ERR# 6: The humidity ratio is invalid. See Also 3.2.2, 3.4.2.2 “GAS” © 1995 - 2010 Fluke Corporation, DH Instruments Division Page 118...
  • Page 129 This variable has no purpose, but is included for compatibility with the DH Instruments RFM product. Remarks The internal buzzer tone is fixed, so the argument serves no purpose. Example Command: “BEEPER=1000” Reply: “1000” Page 119 © 1995 - 2010 Fluke Corporation, DH Instruments Division...
  • Page 130 The day from 1 to the last valid day of the given month. Example Command: “DATE=19981005” Reply: “19981005” Errors ERR# 6: The time date is invalid. See Also 3.6.5.3 © 1995 - 2010 Fluke Corporation, DH Instruments Division Page 120...
  • Page 131 The molbox1+ has the option of controlling up to eight external valves. Example Command: “DRV3” Reply: “DRV3=1” Errors ERR# 6: The n or x arguments are not within given limits. See Also 3.6.7, 7.2 Page 121 © 1995 - 2010 Fluke Corporation, DH Instruments Division...
  • Page 132 0.00001 sccm” Errors ERR# 27: One of the RPTs (transducer) is not functioning. “BUSY” The molbox1+ is busy calculating an A+B flow value. See Also 3.1.3 , “SR”, “READYCK”, “ALLR” © 1995 - 2010 Fluke Corporation, DH Instruments Division Page 122...
  • Page 133 The flow unit protocol is the same as the front panel flow unit definitions. Example Command: “FUNIT=SLM” Reply: “SLM” Errors ERR# 7: The flow unit is invalid or not supported by the molbox1+. See Also 3.4.3, “UTEMP”, “VLM” Page 123 © 1995 - 2010 Fluke Corporation, DH Instruments Division...
  • Page 134 The calibration was not found. ERR# 35: The molbloc experienced a communications time out. ERR# 40: The molbloc experienced a read checksum failure. See Also “GASCALS” command “GAS” command © 1995 - 2010 Fluke Corporation, DH Instruments Division Page 124...
  • Page 135 “KFACT” Arguments Kfactor: The new “K” factor. Defaults “FACT=1.0” (Disabled) Remarks The “K” factor is set to 1 for normal operation. Example Command: “KFACT” Reply: “1.000000” See Also 3.4.1 Page 125 © 1995 - 2010 Fluke Corporation, DH Instruments Division...
  • Page 136 ‘0’. The command will return a ‘1’ if the memory is OK. Example Command: “MEM” Reply: “0” © 1995 - 2010 Fluke Corporation, DH Instruments Division Page 126...
  • Page 137 Channel or mode arguments are invalid ERR# 23: The MFC option is not installed ERR# 23: Channel greater than 1 and MFC switchbox option is not installed See Also 3.4.8, 7.3 Page 127 © 1995 - 2010 Fluke Corporation, DH Instruments Division...
  • Page 138 The adder is always in Pascal. Example Command: “PCAL=38, 1.0021, 14, .9942” Reply: “ 38.00 Paa, 1.002100, 14.00 Paa, 0.994200” Errors ERR# 6: Invalid argument. See Also © 1995 - 2010 Fluke Corporation, DH Instruments Division Page 128...
  • Page 139 Remarks This command determines what unit of measure is used to display pressure. Example Command: “PUNIT=KPA” Reply: “kPa a” Errors ERR# 7: The unit is invalid. See Also 3.5.8 Page 129 © 1995 - 2010 Fluke Corporation, DH Instruments Division...
  • Page 140 The molbox1+’s front panel resolution can be specified with this command. resolution of remote flow measurement replies are always 0.0001% FS. Example Sent: “RES=.01” Query reply: “0.010%” Errors ERR# 6: The argument was out of bounds. See Also 3.4.9 © 1995 - 2010 Fluke Corporation, DH Instruments Division Page 130...
  • Page 141 Each molbox1+ is serialized. This serial number is also imprinted on the product label on the bottom of the molbox1+ and is displayed in the power up introductory screen. Example Command: “SN” Reply: “SN” See Also 3.6.5.2 Page 131 © 1995 - 2010 Fluke Corporation, DH Instruments Division...
  • Page 142 Use the channel dependent “TCAL” command for adjusting the temperature calibration. Example Sent: “STDRES=100.002, 109.998” Reply: “ 100.0020 Ohms, 109.9980 Ohms” See Also 5.4, “TCAL” © 1995 - 2010 Fluke Corporation, DH Instruments Division Page 132...
  • Page 143 “TARESETUP=OFF” returns the molbox1+ to normal measurement mode. Example Command: “TARESETUP=UP” Reply: “UP” Errors ERR# 6: An argument is invalid. ERR# 52: Cannot tare in A+B or A/B mode. See Also 3.4.4.1, “TARE”, “TARESET”; “ABORT” Page 133 © 1995 - 2010 Fluke Corporation, DH Instruments Division...
  • Page 144 1 to 59 followed by “am” or “pm”. Example Command: “TIME=1:22am” Reply: “01:22am” Errors ERR# 7: The time given is invalid. See Also 3.6.5.3 © 1995 - 2010 Fluke Corporation, DH Instruments Division Page 134...
  • Page 145 The upper limit sets the point in which the molbox1+ reacts to protect the internal transducers; It is in the current pressure units. Example Command: “UL=350” Reply: “350.000 kPa” Errors ERR# 6: The upperlimit argument is invalid. See Also 3.6.3 Page 135 © 1995 - 2010 Fluke Corporation, DH Instruments Division...
  • Page 146 “200.00 kPaa” (molbloc temp will be used) Command: “VLM=200, 15” Reply: “200.00 kPaa, 15°C” (user defined temp will be used) Errors ERR# 6: One of the arguments is invalid. See Also 3.4.3.1, 3.4.3.4 “FUNIT” © 1995 - 2010 Fluke Corporation, DH Instruments Division Page 136...
  • Page 147 The optional MFC interface provides an input to measure the MFC valve test voltage. This measurement is referenced to the MFC -15 Volt supply. Example Command: “VVALTEST” Reply: “5.32 V” See Also 3.4.8, 7.3, “MFCCH”, “VIN”, “VOUT” Page 137 © 1995 - 2010 Fluke Corporation, DH Instruments Division...

  • Page 148: Status System

    (32) (16) This register is affected by the molbox1+ reply output queue, the error queue, the Standard Event Status register, the Ready Event Status register and the STATus subsystem. © 1995 - 2010 Fluke Corporation, DH Instruments Division Page 138...

  • Page 149: Figure 13. Status Byte Register

    ERR: Error Queue not empty (Bit 2) Indicates that at least one command error message is waiting in the molbox1+ IEEE-488 error message queue. Use the “SYSTem:ERRor?” query to get this message. Page 139 © 1995 - 2010 Fluke Corporation, DH Instruments Division...

  • Page 150: Standard Event Register

    This bit is not supported as the molbox1+ cannot become the active controller in charge. • OPC: Operation Complete (Bit 0) Indicates that the molbox1+ has completed all requested functions. © 1995 - 2010 Fluke Corporation, DH Instruments Division Page 140...

  • Page 151: M A I N T E N A N C E , Ad J U S T M E N T S A N D C A L I B R A T I O

    Unauthorized service or repair during the warranty period is undertaken at the owner's risk and may cause damage that is NOT covered under product warranty and/or may void the product warranty. Page 141 © 1995 - 2010 Fluke Corporation, DH Instruments Division...

  • Page 152: Calibration Of Reference Pressure Transducers (Rpts)

    Caution should be taken to avoid accidental editing. For information on preventing access to calibration information, see Section 3.6.2. © 1995 - 2010 Fluke Corporation, DH Instruments Division Page 142...

  • Page 153: Equipment Required

    The fitting on the quick connector stem that must be mated to is a compression type for 1/8 in. tube. Page 143 © 1995 - 2010 Fluke Corporation, DH Instruments Division...

  • Page 154: Viewing And Editing Rpt Readings And Calibration Information

    Both the upstream and downstream absolute RPTs are shown together because they are nominally identical and are normally calibrated simultaneously. Pressing [ESCAPE] or [ENTER] returns to the previous screen. © 1995 - 2010 Fluke Corporation, DH Instruments Division Page 144...

  • Page 155: Viewing And Editing Rpt Pa, Pm And Calibration Date

    Press [SPECIAL], <4cal>, <1pres> and then <1upstrm> or <2dnstrm> to specify the RPT to be viewed/edited. Finally select <2view> to view information only or <3edit> to make changes to calibration information. The display is: Page 145 © 1995 - 2010 Fluke Corporation, DH Instruments Division...

  • Page 156: Rpt Calibration/Adjustment Procedure Without Using Caltool For Rpts Software

    General Accessories Disk delivered with molbox1+. Whether using CalTool or not, before proceeding to calibrate molbox1+ RPTs, Sections 5.2.1 through 5.2.4 of this manual should be reviewed thoroughly. © 1995 - 2010 Fluke Corporation, DH Instruments Division Page 146...
  • Page 157 Step  above to provide practical confirmation of the integrity of the calculations. Note also that the CalTool for RPTs software delivered with the molbox1+ performs the necessary calculations automatically. Page 147 © 1995 - 2010 Fluke Corporation, DH Instruments Division...

  • Page 158: Mfc Control Function Adjustment

    Analog Calibration software provide in the molbox1+ accessories. The features described here are made available for advanced users desiring to perform customized adjustments. © 1995 - 2010 Fluke Corporation, DH Instruments Division Page 148...

  • Page 159: Ohmic Measurement [Temperature] System Verification

    0 °C of 100 Ω are programmed on the simulator EEPROM. Using these values, if the molbox1+ ohmic measurement system and associated Page 149 © 1995 - 2010 Fluke Corporation, DH Instruments Division...
  • Page 160 © 1995 - 2010 Fluke Corporation, DH Instruments Division Page 150...

  • Page 161: Ohmic Measurement System Calibration/Adjustment Procedure

    Step  above to provide practical confirmation of the integrity of the calculations. • If an out-of-tolerance condition persists, the molbox1+ and/or the molbloc simulator(s) may need service. Page 151 © 1995 - 2010 Fluke Corporation, DH Instruments Division...

  • Page 162: Molbloc Flow Adjustment

    This allows a new molbloc to be delivered with “virgin” calibration coefficients of FA = 0 and FM = 1. © 1995 - 2010 Fluke Corporation, DH Instruments Division Page 152...

  • Page 163: Molbloc Adjustment Procedure Without Using Caltool For Molbloc Software

    Step  above to provide practical confirmation of the integrity of the calculations. Note also that the CalTool for molbloc Extension to COMPASS for Flow software performs the necessary calculations automatically. Page 153 © 1995 - 2010 Fluke Corporation, DH Instruments Division...

  • Page 164: Reloading Embedded Software Into Molbox1+ Flash Memory

    Any or all of the following items may be included as part of a system maintenance overhaul: • Clean front panel. • Check that rear mounted cooling fan operates when molbox1+ is powered. © 1995 - 2010 Fluke Corporation, DH Instruments Division Page 154...
  • Page 165 Perform calibration of RPTs, if necessary (see Section 5.2). • Perform calibration of MFC control function if option present (see Section 5.3). • Verify ohmic measurement circuit if necessary (see Section 5.4). Page 155 © 1995 - 2010 Fluke Corporation, DH Instruments Division...
  • Page 166 MOLBOX1+™/MOLBOX1+S, MOLBLOC TERMINAL OPERATION AND MAINTENANCE MANUAL Notes © 1995 - 2010 Fluke Corporation, DH Instruments Division Page 156...

  • Page 167: Table 42. Troubleshooting Checklist

    Turn power off and back on and/or execute communications problem with one or Reset – Sets being careful to reenter desired both of its RPTs. settings afterwards. If problem persists, molbox1+ needs service. 3.6.1.1 Page 157 © 1995 - 2010 Fluke Corporation, DH Instruments Division...
  • Page 168 The flow is within the stability limit but Operation is normal. measured flow value are flashing the Reynolds number of the flow in molbloc-L mode. exceeds the maximum acceptable limit of 1,200. © 1995 - 2010 Fluke Corporation, DH Instruments Division Page 158...
  • Page 169 Tare molbox1+. Be sure to tare upstream if incorrect by a constant offset “zeroed” (tared) at the current operating the upstream pressure is constant and amount. pressure. downstream if the downstream pressure is constant. 3.4.4.1 Page 159 © 1995 - 2010 Fluke Corporation, DH Instruments Division...
  • Page 170 One or several RPTs are defective; Check performance of RPTs; check excessive tare value. RPT calibration is bad; there is a leak calibration of RPTs; leak check molbox1+. inside molbox1+ causing a differential pressure. © 1995 - 2010 Fluke Corporation, DH Instruments Division Page 160...
  • Page 171 If MFC control set point entry. current DISPLAY mode does not option is present, use [DISPLAY] to set support MFC set point entry. DISPLAY mode to RATE, UNIT or CLEAN. 3.4.6 Page 161 © 1995 - 2010 Fluke Corporation, DH Instruments Division...
  • Page 172 MOLBOX1+™/MOLBOX1+S, MOLBLOC TERMINAL OPERATION AND MAINTENANCE MANUAL Notes © 1995 - 2010 Fluke Corporation, DH Instruments Division Page 162...

  • Page 173: A P P E N D I

    Kilogram force per centimeter square 1.019716 E-05 User User User defined coefficient 7.1.2 Temperature Table 44. Temperature Unit Conversion TO CONVERT FROM °C TO MULTIPLY BY °F 9/5 and add 32 Page 163 © 1995 - 2010 Fluke Corporation, DH Instruments Division...

  • Page 174: Flow

    TO CONVERT FROM SCCM AT 0 °C TO OTHER VOLUMETRICALLY BASED MULTIPLY UNITS 1.0 E-03 6.0 E-02 Scfm 3.53147 E-05 Scfh 2.11888 E-03 Sm3m 1.0 E-06 Sm3h 6.0 E-05 © 1995 - 2010 Fluke Corporation, DH Instruments Division Page 164...

  • Page 175: Table 47. Conversions From Volumetrically Based Flow Units At 0 °C To

    Propane (C 2.26778 E+01 Sulfur Hexafluoride (SF 6.84697 E+00 Xenon (Xe) 7.61615 E+00 Table 49. Conversion from mole/s to pccm TO CONVERT MOLE/SEC MULTIPLY TO PCCM Any Gas 1.34483 E+06 Page 165 © 1995 - 2010 Fluke Corporation, DH Instruments Division...

  • Page 176: Valve Drivers

    Table 51. Driver/Max Current Per Output # OF ACTIVE MAX CURRENT DRIVERS PER OUTPUT 500 mA 400 mA 275 mA 200 mA 160 mA 135 mA 120 mA 100 mA © 1995 - 2010 Fluke Corporation, DH Instruments Division Page 166...

  • Page 177: Table 52. External Drivers

    Driver #6 (Open Collector) Driver #7 (Open Collector) Driver #8 (Open Collector) Drivers (+12 V) Drivers (+12 V) Drivers (+12 V) Drivers (+12 V) Figure 15. Cable Driver Ports Page 167 © 1995 - 2010 Fluke Corporation, DH Instruments Division...

  • Page 178: Mfc Control Function

    -15 Volts: The negative 15 Volt supply for the MFC. • Current MFC Output (+): This signal is only used for current controlled MFCs. This is the 4-20 mA signal that represents the MFC’s output. © 1995 - 2010 Fluke Corporation, DH Instruments Division Page 168...

  • Page 179: Popular Configurations

    B of the card edge connector. The configuration below should work with the following MFCs. • Millipore (Tylan) model FC260, 261, 262, FM 360, 361, 362 • Qualiflow AFC 260, 261, 202, 360, 361, 302 Page 169 © 1995 - 2010 Fluke Corporation, DH Instruments Division...

  • Page 180: Table 54. Common Mfc Connector Pin Out

    A (B1) MFC Setpoint (-) 2 (A2) MFC Output (-) B (B2) Valve Test Common F (Optional) (B6) 10 (Optional) -15 Volts F (B6) Set Point Sense (+) A (B1) © 1995 - 2010 Fluke Corporation, DH Instruments Division Page 170...

  • Page 181: Warranty Statement

    7. APPENDIX Warranty Statement Except to the extent limited or otherwise provided herein, Fluke Corporation, DH Instruments Division (DHI) warrants for one year from purchase, each new product sold by it or one of its authorized distributors, only against defects in workmanship and/or materials under normal service and use.
  • Page 182 MOLBOX1+™/MOLBOX1+S, MOLBLOC TERMINAL OPERATION AND MAINTENANCE MANUAL Notes © 1995 - 2010 Fluke Corporation, DH Instruments Division Page 172...
  • Page 183 DUT when it is used in a process. Platinum Resistance Thermometer. The element used in molblocs to measure temperature. Psia Pressure unit “pounds per square inch absolute”. Pressure expressed relative to vacuum. Page 173 © 1995 - 2010 Fluke Corporation, DH Instruments Division...
  • Page 184 The temperature of the flowing gas at the device under test for volume flow units of measure. Volume Flow Units Units of measure of volume (sometimes called “actual”) flow. © 1995 - 2010 Fluke Corporation, DH Instruments Division Page 174...

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