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Delta NANOTRACE DF-745 manual

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Table of contents for the manual

  • Page 1

    NanoTrace Moisture A naly zer DF - 745 Enter Next Menu ESC Instruction Manual Firmware Version 3.1. 5 DELTA F CORPORATION 4 Constitution W ay, W oburn, MA 01801 - 1087 Telephone: (781) 935 - 4600 FAX: (781) 938 - 0531 P/N 99000041 082510[...]

  • Page 2

    Copyright 2004 - 2010 by Delta F Corporation No part of this publication may be reproduced, stored in a retrieval sy stem or transmitted in any form, or by any means including electronic, mechanical, photocopy ing, recording or otherwise without prior writte n permission of Delta F Corporation. NanoTrace Moisture Analy zer  is a trademark of Del[...]

  • Page 3

    Read Me First… Unpacking Procedure Follow the procedure below to unpack your NanoTrace Moisture Analyzer 1. Examine the condition of the packaging and its contents. If any damage is apparent, immediately notify the carrier and Delta F. Do not proceed with th e i nstallation. 2. Check the contents against the packing slip to make sure the shipment[...]

  • Page 4

    Unlike much UHP analytical equipment, NanoTrace Moisture Analyzer d oes not requi re constant m aint enance. However the maintenance intervals for zero and span calibrations, must be determined and followed carefully. Thank You Thank you for selecting the NanoTrace Moisture Analyzer. Delta F designs, manufactures, exhaustive ly tests, and supports [...]

  • Page 5

    Table of Contents DF -745 1 1 Table of Contents 1 Table of Contents ................................ .................................... 1 1.1 Table of Figures ...................................................................................................... 3 2 Cautions .........................................................................[...]

  • Page 6

    2 DF -745 Table of Contents 7.4.3 Calibrate Menu ........................................................................................ 38 7.4.4 Data History Routine ............................................................................... 42 7.4.5 Data Downloader Routine .....................................................................[...]

  • Page 7

    Table of Contents DF -745 3 1.1 Ta ble of Figures Figure 1: Overall View .............................................................................................................................. 11 Figure 2: Major Internal Components ........................................................................................................ 13 Fig[...]

  • Page 8

    4 DF -745 Table of Contents Figure 49: Alarm Setup Menu ................................................................................................................... 51 Figure 50: Alarm Setup Screen ................................................................................................................. 52 Figure 51: Temperature Alarm[...]

  • Page 9

    Table of Contents DF -745 5 Table of Tables Table 1: Recommended Sample Outlet Vacuum Pressure .......................................................................... 21 Table 2 : Pin - out of Serial Comm Connector J5 .......................................................................................... 32 Table 3: Serial Communications Conn[...]

  • Page 10

    [...]

  • Page 11

    Cautions DF -745 7 2 Cautions There are a number of warnings and cautions that must be observed to avoid damage to the analyzer as well to insure the safety of its users. The analyzer must be operated in a manner specified in this manual. Delta F cannot be responsible for direct or consequentia l damages th at resul t f rom i nstalling or operating[...]

  • Page 12

    8 DF -745 Cautions CAUTION Do not setup or operate this analyzer w ithout a complete understanding of the instructions in this manual. Do not connect this Analyzer to a pow er source until all signal and plumbing connections are made. CAUTION This analyzer must be operated in a manner consistent w ith its intended use and as specified in this manua[...]

  • Page 13

    Specifications DF -745 9 3 Specifications 3.1 Moisture Lowest Detection Level (LDL): 2 ppb @ Constant Conditions Res olution: Analyt ical (Smallest Detectable Change): .5 ppb Display: 100 ppt Accuracy: Greater of ±3% of reading or ±1 ppb @ Constant Conditions Speed of Response: Ty pically 10 minutes to reach 90 percent of an upward step change Up[...]

  • Page 14

    10 DF -745 Specifications Audible/Visual Alarm Status Indicators: Four Moi sture l evels, Temperature, Moi sture cel l Diagnostic, Zero Verification or Calibration in Process, Moisture Analyzer of f - line, Analog output freeze during calibration. Alarm Relays: Four non - lat ching, independently assignable to moisture alarms or to mo ist ure calib[...]

  • Page 15

    Specifications DF -745 11 9.45 [239.90] Enter Next Menu ESC 5 5 RLY4-COM RLY2-COM RLY1-COM RLY1-NO RLY1-NC KEY 4 4 RLY3-NC 1 2 3 KEY 3 2 1 RLY3-COM RLY3-NO RLY2-NO RLY2-NC GND 8 6 7 GND 8 7 6 RLY4-NO RLY4-NC RX+ TX+ 3 3 1 2 1 2 4-20mA- 4-20mA+ TX- GND RX- KEY 8 7 6 4 5 KEY GND 8 7 6 4 5 AOUT- AOUT+ ~ ~ ~ ~ ~ ~ NOT USED 1.55 [39.25] 3.63 [92.08] 2.5[...]

  • Page 16

    [...]

  • Page 17

    Installation, Start Up and Shut Down DF -745 13 4 Installation, Start Up and Shut Down Installation of the analyzer requires the following steps be followed:  Connecting the N2/Air supply to the aspirator  Connecting an exhaust tube to the aspirator outlet, if needed  Connect ing the pneumatic pressure service to the pneumatic inlet fittin[...]

  • Page 18

    14 DF -745 Installation, Start Up and Shut Down 4.1 Analy zer Inst allat ion 4.1.1 Vacuum Source 4.1.1.1 Aspirator The standard vacuum source provided with the DF - 745 analyzer is a factory installed aspirator as shown i n Figure 3 . Aspirator i nstallation wit h the opti onal gas panel is identical. SAMPLE VENT 80 psi IN ASPIRATOR Figure 3 : Aspi[...]

  • Page 19

    Installation, Start Up and Shut Down DF -745 15 Be sure to use a backup wrench when making all connections to the aspirator. 4.1.1.2 Vacuum Pump An optional vacuum pump can be purchased for those cases where there is insufficient gas pressure or flow to operate the aspi rator, or when the anal y zer i s installed in a portable cart and connection t[...]

  • Page 20

    16 DF -745 Installation, Start Up and Shut Down See page 25 fo r i nfo rm ati on on the i nstallation of the optional vacuum pump. PROCESS OUTLET PROCESS INLET NOT USED 5 5 RLY4-COM RLY2-COM RLY1-COM RLY1-NO RLY1-NC KEY 4 4 RLY3-NC 1 2 3 KEY 3 2 1 RLY3-COM RLY3-NO RLY2-NO RLY2-NC GND 8 6 7 GND 8 7 6 RLY4-NO RLY4-NC RX+ TX+ 3 3 1 2 1 2 4-20mA- 4-20m[...]

  • Page 21

    Installation, Start Up and Shut Down DF -745 17 4.1.4 Electrical Connections Open the door and locate the power switch in the center of the upper rail. Be sure it is in th e OFF position. Plug the line cord (supplied with 110VAC units only) into the receptacle at the back of the analyzer. Verify the operating voltage is proper according to the labe[...]

  • Page 22

    18 DF -745 Installation, Start Up and Shut Down RLY4-NC RLY4-NO GND RLY3-NO RLY3-COM KEY RLY3-NC RLY4-COM 7 8 NOT USED RLY2-NO KEY RLY1-NC RLY1-NO RLY1-COM RLY2-COM 3 1 2 6 4 5 GND RLY2-NC 5 RX- RX+ 1 TX+ 4 2 3 8 GND KEY TX- 6 7 ~ ~ AOUT- 5 4-20mA- 1 4-20mA+ 4 2 3 GND 8 AOUT+ KEY 6 7 3 2 1 6 4 5 7 8 ~ ~ ~ ~ ISOLATION GAS PANEL SHOWN AC INLET Figure[...]

  • Page 23

    Installation, Start Up and Shut Down DF -745 19 4.2 Analy zer Start Up It i s important to note that, i f equipped with automatic gas valves, the moisture cel l is iso lat ed from gas flow while the analyzer is off power. Open the door and turn on the power usi ng the main power switch inside the analyzer. See Figure 2 . The pump , i f equipped, sh[...]

  • Page 24

    20 DF -745 Installation, Start Up and Shut Down The moi sture cel l outl et wi ll be connected to the suppl ied aspirator or , i f equipped, to the vacuum pump . The sample inlet to the moisture analyzer, as well as the zero gas inlet, are heated to 60 C. This is done to mitigate any effects of adsorption - desorpti on of trace m oi sture on the wa[...]

  • Page 25

    Installation, Start Up and S hut Down DF -745 21 e. Use the regulator to adj ust the flow through the cell to 1 slpm (2 scfh) as shown on the flowmeter behind the front door. NOTE: This flow rate may be reduced to m inimize gas consumption but the flow rate will directly impact the overall system speed of response. f. Confirm that the needle valve [...]

  • Page 26

    22 DF -745 Installation, Start Up and Shut Down valve closes as well. Throughou t thi s process a message appears over the display instructing th e user to wai t 40 seconds. Once complete, the message disappears and the user may shut th e power off with the switch behind the front door that initiates the computer shut down sequence that t akes an a[...]

  • Page 27

    Installation, Start Up and Shut Down DF -745 23 H O 2 REGULATOR ADJUSTMENT PROCESS INLET BYPASS OUTLET BYPASS FLOWMETER BYPASS FLOW ADJUST FLOW METER REAR PANEL FLOWSWITCH (FRONT) (REAR) PI .010 ORIFICE V1 V2 80 psi IN TO CREATE VACUUM MOISTURE SAMPLE VENT ASPIRATOR WITH BUILT IN VACUUM CONTROL NEEDLE VALVE MOISTURE SENSOR OUTLET Figure 10 : Block [...]

  • Page 28

    [...]

  • Page 29

    Options DF -745 25 5 Options The following options to the DF - 745 are available at the time of order. 5.1 Key Lock An optional key lock can be installed in the door of the analyzer to prevent access to the power swi tch and other inte rnal components. The lock is supplied with two keys. If the analyzer is operating, the key lock does not prevent a[...]

  • Page 30

    26 DF -745 Options breaker switch . The pump connection should be made directly to the Moisture Sample Outl et as described in section 5.6.2 . PLASTIC TUBING SUPPLIED TO MOISTURE SENSOR OUTLET POWER CORD TO VACUUM PUMP POWER CONNECTOR Figure 11 : Vacuum Pump Asse mbly 5.6.1 Installation of the Vacuum Pump  Mount the vacuum pump to the bracket ?[...]

  • Page 31

    Options DF -745 27 Ø.28 [Ø7.14] 4 PL MOUNTING FOR BOTTOM OF BRACKET 5.17 [131.32] 4.92 [124.97] Ø .28[ Ø 7.14] 4 PL MOUNTING FOR REAR OF BRACKET Ø.28 [Ø7.14] 4 PL MOUNTING FOR LEFT OR RIGHT SIDE OF BRACKET 3.94 [100.08] 2 PL 3.94 [100.08] 2 PL 4.92 [124.97] 6.89 [175.01] 3.94 [100.08] Figure 12 : Vacuum Pump Mount Dimensions 8.54 [216.79] 5.0[...]

  • Page 32

    28 DF -745 Options 5.6.2 Moisture Sample Gas Outlet Connection to Vacuum Pump The samp le gas outlet connection is a ¼ inch compression fitting labeled Moisture Sensor Outl et as shown in Figure 4 and Figure 5 . Use th e pol yet hylene tubing provided with the an alyzer to connect between the outlet fitting and the ¼ inch fittings on the needle c[...]

  • Page 33

    Options DF -745 29 VACUUM CONTROL NEEDLE VALVE (SUPPLIED LOOSE) PI .010 ORIFICE H O 2 MOISTURE SENSOR OUTLET PROCESS INLET REAR PANEL FLOW METER (FRONT) EXTERNAL VACUUM PUMP (SUPPLIED LOOSE) MOISTURE SAMPLE VENT Figure 15 : Block Diagram of Gas Flow Path and Optional Vacuum Pump FLOW METER REAR PANEL FLOWSWITCH (FRONT) (REAR) EXTERNAL VACUUM PUMP ([...]

  • Page 34

    [...]

  • Page 35

    Connecting to External Devices DF -745 31 6 Connecting to External Dev ices The analyzer can be interfaced to a variety of external devices via the ports on the rear panel. Alarm contacts, volta ge, and current outputs, and seri al communications are supported. Al l outputs, anal og or di git al, are fully isolated from earth ground. NOTE During th[...]

  • Page 36

    32 DF -745 Connecting to External Devices A program to facilitate serial communications is available from Delta F. Pin # Signal Description J5 -8 GND Ground J5 -7 TX - 4 wired 485 paired with TX+ J5 -6 Key Unused J5 -5 RX - 4 wire 485 paired with RX+ J5 -4 Unused J5 -3 Unused J5 -2 TX+ Data transmitted by the analyzer via RS - 232 or RS - 485 J5 -1[...]

  • Page 37

    Connecting to External Devices DF -745 33 The 4 - 20 m A analog output correl ati ng to the front panel display reading is provided on the rear of the analyzer through connector J4. This output is electrically isolated from all other analyzer outputs, and from chassis (Earth) grou nd. The maximum load resistance for each is 1K Ohms and the analyzer[...]

  • Page 38

    [...]

  • Page 39

    User Interface DF -745 35 7 User Interface 7.1 Dat a Di splay Screen The front panel display consists of the Graphical User Interface (GUI), as displayed on the view screen in Figure 18 belo w. Figure 18 : Data Di spla y Screen The various elements of the main data display screen are as follows:  Alarm status indicator – ‘1, etc.’ denotes [...]

  • Page 40

    36 DF -745 User Interface Enter Next Me nu ESC Figure 19 : Keypad The ‘ Menu ’ key activates the menu structure along the top of the GUI interface on the view screen. Once in the menu, the arrow keys ( and ) highlight the various menu features. When th e desired selection is highlighted, the right arrow will access the submenu if available (den[...]

  • Page 41

    User Interface DF -745 37 The Main Menu is accessed by pressing the Menu key on the front panel. Use the arrow keys ( and ) to navi ga te up and down through the list. Select the highlighted item with th e Enter key on the front panel. If a menu item is grayed out as shown in Figure 21 , then the opti on i s not i nstalled, and as a result the item[...]

  • Page 42

    38 DF -745 User Interface Figure 23 : Isol ate Warning While t he moisture cell is isolated from gas flow, a warning will appear at the bottom of the main display indicating “ Iso lated ”. 7.4.2 Restore Sample Gas Flow – Optional Figure 24 : Restore Sam ple Gas Flow This command allows the user to return the analyzer gas flow to normal after [...]

  • Page 43

    User Interface DF -745 39 Figure 25 : Calibrate Menu 7.4.3.1 Check/Adjust Zero Figure 26 : Check/Adjust Zero Menu The Check/Adjust Zero screen displays many pieces o f info rm ati on i ncluding a live reading of m oi sture i n ppb (or ppm) and the state of the zero gas control valves. Also depicted are Zero Reference and Zero Offset values. The Zer[...]

  • Page 44

    40 DF -745 User Interface A relay is available on the Analog Output Setup Screen (see page 55 ) to si gnal that a zero calibration is taking place, and the analog output signal can also be frozen or allowed to update duri ng the calibration process. Figure 27 : Check/Adjust Zero Screen 7.4.3.1.1 User Zero Offset Figure 28 : User Zero Offset The Use[...]

  • Page 45

    User Interface DF -745 41 back and change the value or move to the Done button, fol lo wed by hitting the Enter key to l eave the screen. Using the ESC key at any time will exit the screen making no changes and return to the m ain display. 7.4.3.1.2 Do A Ma nual Zero Figure 29 : Manual Zero Screen The manual zero command enables the user to zero th[...]

  • Page 46

    42 DF -745 User Interface 7.4.4 Data History Routine Figure 30 : Data History Menu The Data History Screen ( Figure 31 ) enables the user to see the data history displayed in stri p chart form on the front display. By default, the data history screen displays data for the mo st recent 24 hour peri od sam p led at 1 poi nt per m inut e (fixed) and t[...]

  • Page 47

    User Interface DF -745 43 Figure 31 : Data Hi story Screen Figure 32 : Install Media F irmware version 0.6.1 Serial # ND - 10016 Model # DF - 745 Start time 05 - 01 - 2003 03:07 PM End time 05 - 22 - 2003 03:07 PM Date Time H2O 5/16/03 1:24 PM 5.423 5/16/03 1:25 PM 5.423 5/16/03 1:26 PM 5.421 5/16/03 1:27 PM 5.416 5/16/03 1:28 PM 5.411 5/16/03 1:29[...]

  • Page 48

    44 DF -745 User Interface 7.4.5 Data Downloader Routine Figure 34 : Data Downl oader Menu The Moisture Data Downloader screen, F igure 35, enables the user to label data with unique location names as well as to view and download specified data. The Next key is used to toggle through the various options on the screen and the arrow keys ( and  mo [...]

  • Page 49

    User Interface DF -745 45 7.4.5.2 View Location Figure 36 : Vi ew Locati on Screen The view location function is used to view data previously stored in the system sorted by lo cati on. On the Moisture Data Dow nlo ader screen F igure 35 , use the Next key to m ove to th e l ist of existing names and then use the arrow keys ( and  to sel ect the [...]

  • Page 50

    46 DF -745 User Interface Use the arrow key s ( and  to navigate the keyboard and use the Enter key to accept each character. If an error is made use the Next key to m ove to the Clear Entry key and hit enter. When the location name is complete use the N ext key to m ove the highlight to Accept New Location and hit Enter. The display will return[...]

  • Page 51

    User Interface DF -745 47 th e event of an Automatic Zero, if it were scheduled. The time to per fo rm the zero and the resulting zero reference are also noted. Figure 40 : Zero Log Screen 7.4.6.2 System Error Code Log Figure 41 : Vi ew Sy stem Error Code Log Menu The System Error Log reports functional errors in the moisture system. If the error p[...]

  • Page 52

    48 DF -745 User Interface Contact Del ta F for assistance in interpreting the various codes if one should appear on the screen. Figure 42 : Sy stem Error Code Screen 7.4.6.3 Pump Capacity Test Log Figure 43 : Pum p Capacity Test Log Menu The pump capacity test is used to determine the condition of the aspirator or vacu um pump which in turn will ha[...]

  • Page 53

    User Interf ace DF -745 49 Figure 44 : Pum p Capacity Test Log 7.4.7 Analyzer Setup The analyzer setup men u allows the user access to the Gas Scale Factor settings, Alarm Setups, Analog Output setup and Graph setup. Use the arrow key s ( and  to scrol l up and down through the list. Pressing ESC will return to the m ain display. 7.4.7.1 Sample [...]

  • Page 54

    50 DF -745 User Interface Use the Next key to m ove from between fields and use the arrow keys ( and  to change the highlighted selections and to enter numerical values. When done, use the Next key to m ove to the Accept button and hit the Enter key to return to the m ain display. Using the ESC at any ti me will exit the screen making no changes[...]

  • Page 55

    User Interface DF -745 51 In addition, if hydrogen is entered as a gas in the GSF Setup, and the system detects a failure in the exhaust fan circuitry the entire analyzer will automatically isolate. A message of “Fan Failure” as shown in Figure 48 will flash over the moisture reading on the main display and the user will be unable to resto re a[...]

  • Page 56

    52 DF -745 User Interface An alarm warning will overwrite the moisture level readout if an alarm condition exists. To acknowledge the alarm simply hit the Enter button and its number or letter will appear in th e Alarm Status line ab ove the display. See Figure 18 . Thi s acti on will not clear the alarm. Only restoration of the condition that exis[...]

  • Page 57

    User Interface DF -745 53 7.4.7.5 Temperature Range Alarm Setup Figure 51 : Tem perature Alarm Setup The system is constantly monitoring the ambient temperature in the analyzer cabinet. If enabled on the Temperature Alarm Setup screen, an alarm can be assigned to trip if the ambient tem perature e xceeds preset limits. The user may assign the tempe[...]

  • Page 58

    54 DF -745 User Interface to tri p i f th e pressure exceeds preset l imit s. The user may assign the pressure alarm to one of f our rel ays. The limit s are not user adj ustable but are set automatically on the basis of the background gases entered in the GSF screen. See page 49 fo r addi ti ona l info rm ati on on setti ng the background gases. U[...]

  • Page 59

    User Interface DF -745 55 7.4.8 Analog Output Setup Figure 54 : Analog Output Setup Menu The Zero Point corresponds to the l owest vol tage or current output (0 VDC, 4 m A) that i s sent to a recorder, whi le the Fu ll Scale corresponds to the maximum voltage or current output (1/5/10 VDC or 20m A) that i s sent. The Full Scale set poi nt (FS) i s [...]

  • Page 60

    56 DF -745 User Interface The In Calibration Relay can be enabled to signal that a zero calibration is in process. In addition, the user has the option to freeze the analog output or enable the analog output to update as the calibration progresses. 7.4.9 Graph Setup Figure 56 : Graph Setup Menu The graph setup is used to adjust the time scale on th[...]

  • Page 61

    User Interface DF -745 57 7.4.10.1 Active Zero On/Off Figure 58 : Active Zero On/Off Menu The Active Zero Offset feature is designed to automatically compensate for the analyzer’s gradual zero baseline cleanup. This gradual cleanup is natural and occurs after a fresh startup or af ter a prol onged or abnormally high moisture exposure. This featur[...]

  • Page 62

    58 DF -745 User Interface If the Active Zero Offset feature is turned off, the User Zero Offs et value will appear in its’ place in the Check/Adjust Zero menu. The previous user Zero Offset value (if any) will reappear and immediately be applied to the live display readings. Likewise, if the Active Zero Offset feature is on, then its’ value (if[...]

  • Page 63

    User Interface DF -745 59 7.4.10.3 Test Analog Voltage Output Figure 61 : Test Analog Outputs Menu The Test Output screen, as shown in Figure 62 , i s used to cal ibrate the analog recorder output. When the Test Output screen i s selected, the NEXT key is used to move to the percentage field where the arrow keys ( and ) are used to choose the appro[...]

  • Page 64

    60 DF -745 User Interface 7.4.10.4 Signal Monitor Figure 63 : Si gnal Monitor Menu The Signal Monitor depicts 18 system parameters in numerical order. Each parameter is unique for each system. In the event of a system error, these parameter s can be used as a diagnostic tool. See page 47 fo r addi ti onal information on system errors. Figure 64 : S[...]

  • Page 65

    User Interface DF -745 61 Figure 65 : Pum p Capacity Test Menu Aft er the pum p test i s com plete, an entry is automatically put in the pump capacity test log as shown in Figure 68 . See pa ge 48 fo r addi ti onal info rm ati on on the pum p test l og. Figure 66 : Pum p Capacity Test Screen Figure 67 : Pum p Pressure Failure[...]

  • Page 66

    62 DF -745 User Interface Figure 68 : Pum p C apacity Test Log 7.4.11 Adjust Contrast Figure 69 : Adjust Contrast Menu Figure 70 : Adjust Display Contrast Screen This screen allows the user to modify the contrast of the front display screen. From the System menu, select Adjust Contrast. Use the up and down arrows ( and ) as indicated to make adjust[...]

  • Page 67

    User Interface DF -745 63 7.4.12 Power Up Default – Optional Figure 71 : Power Up Default Menu This menu item is only available on analyzers equipped with the isolation valve option. The Power Up Default SubRoutine a llo ws the user to determ ine the various default states duri ng analyzer power up. The power up states are useful because they det[...]

  • Page 68

    64 DF -745 User Interface 7.4.13 Date/Time Figure 73 : Date/Ti me Menu The Date/Time Screen is used to set various calendar and clock related parameters. The Next key is used to moved from field to field, and the arrow keys ( a nd ) are used to change the numerical digits and units. When in the Time Zone field the left and right arrow keys toggle t[...]

  • Page 69

    User Interf ace DF -745 65 7.4.14 Communications The Communications screen is used to set parameters related to serial PC communications. Accessed fr om the System menu, the Next key is used to moved from field to field, and th e arrow key s ( and ) are used to change the numerical digits as well as to select the baud rate. When done the Next key i[...]

  • Page 70

    66 DF -745 User Interface Hit Enter and the download process will begin and a time bar will appear as in Figure 80 . The process should only take a minute or two and when complete control will be returned to the user. Figure 77 : Downl oad Sy stem Data Menu Figure 78 : Insert Media Figure 79 : Media Warning If there is insufficient space available [...]

  • Page 71

    User Interface DF -745 67 Figure 80 : Downl oad Ti me Line The file name is automatically created and includes the date and time that the data was recorded as well as the serial n umber of the analyzer. All files are then automatically com pressed and loaded as one file on the memo ry sti ck , which then can be used to forward th e i nfo rm ati on [...]

  • Page 72

    68 DF -745 User Interface Figure 82 : Sy stem Info Screen 7.4.16.1 Firmware Upgrade While t he Firm ware Upgrade box is highlighted, hitting the Next key will bring up the Firmware Upgrade dialog box as in Figure 83 belo w. Figure 83 : Sof tware Upgrade Screen Pl ace the USB memory stick in the external USB socket located beh ind the front door, Wh[...]

  • Page 73

    Sample Gas Preparation and Delivery DF -745 69 8 Sample Gas Preparation and Deliv ery 8.1 Introduction It is important to note key di fferences in each parameter to ensure a properly functioning syst em. Parameters such as flow, pressure, and background gas will have major effects on total sy stem performance. 8.2 Sample Flow Rate and Pressure Prop[...]

  • Page 74

    70 DF -745 Sample Gas Preparation and Delivery such as Helium and Hydrogen whose flow rates should be set to approximately one - th ir d th at of Ni trogen. 8.5 Flammable Sample Gas There is nothing within the analyzer sample system that can ignite a flammable sample gas. However, it is critical to ensure that the sample gas does not escape from th[...]

  • Page 75

    Service DF -745 71 9 Serv ice 9.1 Return Material Authorization number If an analyzer has to be returned to the factory, the shipper will have to obtain a Return Material Authorization number from Delta F by calling the Service Line at (781) 935 - 5808 or sending a wri tten request vi a their Service Fax Line at (781) 932 - 0053. See the Shipping s[...]

  • Page 76

    72 Service 6. Install valve plate, head gasket and head 7. Install head bolts and torque to 80 in - lbs.[...]

  • Page 77

    Service DF -745 73 9.3 Replaceable Part s List When ordering parts, please be certain to supply the model number and serial number of yo ur analyzer. PART NO. PART DESCRIPTION Printed Circuit Boards 10424570 Moisture Board 54000001 Front Display Hard ware Items 14241410 Aspirator 63000308 Vacuum Pump – 110 VAC 63000309 Vacuum Pump – 240VAC 6300[...]

  • Page 78

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  • Page 79

    Service DF -745 75 9.4 Tr oubleshooting the DF – 745 NanoT race Analy zer The DF - 700 series moisture analyzer constantly performs internal monitoring of the analyzer operati on. In the event of a failure a system alarm will be di splayed on the front panel. In addition the failure will be logged in the System Error Log (see page 47 ). In the ev[...]

  • Page 80

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  • Page 81

    Theory of Operation DF -745 77 10 Theory of Operation 10.1 The Moisture Measurement 10.1.1 Moisture and the IR Spectrum Figure 84 : Schematic of Moisture Cell The Nanotrace Moisture analyzer uses infrared (IR) absorption as its detection method. IR absorpti on i s but a subset of the overall field of “spectroscopy,” which measures the int eract[...]

  • Page 82

    78 DF - 745 Theory of Operation 10.1.2 Absorption Spectroscopy The relationship that defines absorption spectroscopy is known as Beer’s Law. Beer’s Law equates, i n rigorous term s, the concentration of any absorbing molecule based on absorbed light i nt ensity at a parti cular wavelength, given knowledge of the molecule’s absorption strength[...]

  • Page 83

    Safety DF -745 79 11 Safety 11.1 General W arnings DANGER Potentially hazardous AC voltages are present w ithin this instrument. Leave all servicing to qualified personnel. Disconnect the AC pow er source w hen installing or removing: external connections, the sensor, the e lectronics, or w hen charging or draining electrolyte. CAUTION Do not setup[...]

  • Page 84

    [...]

  • Page 85

    Warranty DF -745 81 12 Warranty Delta F Corporati on warrants each instrument manufactured by them to be free from defects in material and workmanship at the F.O.B. point specified in the order, its liability under this warranty being limited to repairing or replacing, at the Seller's option, items which are returned to it prepaid within one y[...]

  • Page 86

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  • Page 87

    Index DF -745 83 13 Index 4 4- 20mA Outputs, 32 A Active Zero On/Off , 57 Add Location, 45 Adjust Contrast, 62 Alarm Setup, 51 Alarm Setup, Moisture, 52 Analog Output Setup, 55 Analog Signal Outputs, 32 Analog Voltage Output, 25 Analog Voltage Output Test, 59 Analy zer Specifications General, 9 Moisture, 9 Warranty , 81 Analy zer Setup, 49 Analy ze[...]

  • Page 88

    84 Index O Operating Voltage, 25 Options, 25 P Power Up Default, 63, 64 Pressure Alarm Setup, 53 Pump Capacity Test, 60 Pump Capacity Test Log, 48 Pump case purge, 89 R Relay Ports, 33 Relays, Test, 58 Restore Sample Gas Flow, 38 S Safety, 79 Symbols and Explanations, 79 Sample Gas Flammability , 70 Sample Gas Preparation and Delivery , 69 Backgrou[...]

  • Page 89

    Appendix A – User Menu Screens DF -745 85 14 Ap pendix A – User Menu Screens Page 37 Pa ge 38 Page 39 Page 42 Page 44 Page 46 Page 47 Page 48[...]

  • Page 90

    86 Appendix A – User Menu Screens Page 49 Page 51 Page 55 Page 56 Page 57 Page 58 Page 59 Page 60[...]

  • Page 91

    Appendix A – User Menu Screens DF -745 87 Page 60 Page 62 Page 63 Page 64 Page 65 Page 66 Page 67[...]

  • Page 92

    88 Appendix A – User Menu Screens[...]

  • Page 93

    Appendix B – Hydr ogen Service Safety System DF -745 89 15 Ap pendix B – Hy drogen Serv ice Safety Sy stem The Hydrogen Service Safety System is designed to safeguard th e DF-745 from explosion hazards when operating on hydrogen sample gas under normal pressure and flow conditions as described in this manual. The instrument chassis and the remo[...]

  • Page 94

    90 Appendix B – Hydr ogen Service Safety System  The pump enclosure must be mounted to a nearby wall or inside the rack shared by th e analyzer. See Figure 86 on page 94.  The sample gas inlet connection is made to an interlock valve mounted at the sample gas inlet on the rear of the analyzer. NOTE: The installation of this option c hanges [...]

  • Page 95

    Appendix B – Hydr ogen Service Safety S ystem DF -745 91 adequate pump cooling. The purge flow rate is set to 30 scfh as indicated on a rotom e ter m ounted on the si de of the pump enclosure. An in - line flo w switch will tri p at a flow rate of less than 26 scfh assuring adequate flow. Loss of purge flow breaks the contacts in the flow switch,[...]

  • Page 96

    92 Appendix B – Hydr ogen Service Safety System CAU TI ON The operator i s obligated to assure proper operation of the analyzer air flow system as designed. Do not impede air flow at the inlet in th e front door or at the exhaust fan outl ets on ei th er side of the cabinet in the rear. NOTES 1 For hy drogen , which has a lower explosive limit (L[...]

  • Page 97

    Appendix B – Hydr ogen Service Safety System DF -745 93 ~ ~ ~ ~ ~ ~ CASE PURGE VALVE WITH 1/4" COMPRESSION FITTING SAMPLE DELIVERY INTERLOCK VALVE WITH 1/4" FEMALE VCR FITTING 3.27 [82.93] 3.07 [77.98] 5.44 [138.24] .54 [13.70] 1.18 [29.85] 3.07 [77.85] Figure 85 : Hy drogen Service Safety System[...]

  • Page 98

    94 Appendix B – Hydr ogen Service Safety System THIS ENCLOSURE IS PROTECTED BY PURGING BE NON-HAZARDOUS OR UNLESS ALL DEVICES WITHIN HAVE BEEN DEENERGIZED. AFTER ENCLOSURE HAS BEEN OPENED POWER SHALL NOT BE RESTORED UNTIL THE ENCLOSURE HAS BEEN PURGED FOR ENCLOSURE SHALL NOT BE OPENED UNLESS THE AREA IS KNOWN TO 15 MINUTES AT 30 SCFH. ENCLOSURE I[...]