Table of Contents
Summary of Contents for Delta F NANOTRACE DF-745
- Page 1 NanoTrace Moisture Analyzer DF-745 Menu Next Enter Instruction Manual Firmware Version 3.1.5 P/N 99000041 DELTA F CORPORATION 082510 4 Constitution Way, Woburn, MA 01801-1087 Telephone: (781) 935-4600 FAX: (781) 938-0531...
- Page 2 The Delta F Difference Your NanoTrace Moisture Analyzer has been designed, manufactured and is supported under the tightest of controls, thus helping to insure the highest possible standards of quality. Every analyzer that Delta F manufactures is tested and operated on a variety of gas concentrations to insure that it functions properly when you receive it.
- 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 the installation.
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Page 4: Thank You
Unlike much UHP analytical equipment, NanoTrace Moisture Analyzer does not require constant maintenance. 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, exhaustively tests, and supports every analyzer under the tightest quality controls. -
Page 5: Table Of Contents
1 Table of Contents Table of Contents ... 1 Table of Figures... 3 Cautions... 7 Symbols and Explanations... 7 Important Warnings ... 7 Specifications ... 9 Moisture ... 9 General... 9 Installation, Start Up and Shut Down ... 13 Analyzer Installation ... 14 4.1.1 Vacuum Source ... -
Page 6: Df-745 Table Of Contents
7.4.3 Calibrate Menu... 38 7.4.4 Data History Routine ... 42 7.4.5 Data Downloader Routine... 44 7.4.6 View Logs Menu ... 46 7.4.7 Analyzer Setup ... 49 7.4.8 Analog Output Setup ... 55 7.4.9 Graph Setup ... 56 7.4.10 Diagnostics Menu ... 56 7.4.11 Adjust Contrast... -
Page 7: Table Of Figures
1.1 Table of Figures Figure 1: Overall View... 11 Figure 2: Major Internal Components... 13 Figure 3: Aspirator Installation ... 14 Figure 4: Rear Gas Connections ... 16 Figure 5: Rear Gas Connections and Controls with Optional Gas Panel... 16 Figure 6: AC Power Connections ... - Page 8 Figure 49: Alarm Setup Menu... 51 Figure 50: Alarm Setup Screen ... 52 Figure 51: Temperature Alarm Setup ... 53 Figure 52: Pressure Alarm Setup... 53 Figure 53: System Alarm Setup... 54 Figure 54: Analog Output Setup Menu... 55 Figure 55: Analog Output Setup Screen ... 55 Figure 56: Graph Setup Menu ...
- Page 9 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 Connections ... 32 Table 4: Pin-Out of Moisture Signal Output Connector J4 ... 32 Table 5: Pin-Out of Relay Connectors J8 and J9 ... 33 Table 6: Alarm Codes ...
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Page 11: Cautions
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 consequential damages that result from installing or operating the analyzer in a manner not described in this manual. - Page 12 Do not setup or operate this analyzer without a complete understanding of the instructions in this manual. Do not connect this Analyzer to a power source until all signal and plumbing connections are made. This analyzer must be operated in a manner consistent with its intended use and as specified in this manual.
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Page 13: Specifications
3 Specifications 3.1 Moisture Lowest Detection Level (LDL): 2 ppb @ Constant Conditions Resolution: Analytical (Smallest Detectable Change): .5 ppb Display: 100 ppt Accuracy: Greater of ±3% of reading or ±1 ppb @ Constant Conditions Speed of Response: Typically 10 minutes to reach 90 percent of an upward step change Upset Recovery Time: Typically less than 5 minutes from a high ppb upset to within 10 ppb of the previously stable reading. - Page 14 Audible/Visual Alarm Status Indicators: Four Moisture levels, Temperature, Moisture cell Diagnostic, Zero Verification or Calibration in Process, Moisture Analyzer off-line, Analog output freeze during calibration. Alarm Relays: Four non-latching, independently assignable to moisture alarms or to moisture calibration-in-process indicator. SPDT contacts rated at 1 Amp @ 30 VDC. Fail safe action upon loss of power to alarm condition.
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Page 15: Figure 1: Overall View
Figure 1: Overall View Specifications DF-745... -
Page 17: Installation, Start Up And Shut Down
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 Connecting the pneumatic pressure service to the pneumatic inlet fitting ... -
Page 18: Analyzer Installation
4.1 Analyzer Installation 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 in Figure 3. Aspirator installation with the optional gas panel is identical. SAMPLE VENT 80 psi IN A regulated source of dry compressed gas (either N2 or air) is required at 80psi and a flow rate of approximately 15 slpm. -
Page 19: Pneumatic Pressure Line Connection - Optional
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 aspirator, or when the analyzer is installed in a portable cart and connection to a continuous gas supply is inconvenient. -
Page 20: Figure 4: Rear Gas Connections
See page 25 for information on the installation of the optional vacuum pump. PROCESS OUTLET Figure 4: Rear Gas Connections PNEUMATIC GAS INLET BYPASS FLOW ADJUST PROCESS OUTLET BYPASS OUTLET Figure 5: Rear Gas Connections and Controls with Optional Gas Panel RLY2-NC RLY4-NC RLY2-NO... -
Page 21: Electrical Connections
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 the 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 label on the rear and connect the line cord to the power source. -
Page 22: Figure 7: Ac Power Connections With Optional Gas Panel
ISOLATION GAS PANEL SHOWN Figure 7: AC Power Connections with Optional Gas Panel RLY2-NC RLY4-NC RLY2-NO RLY4-NO RLY2-COM RLY4-COM NOT USED RLY1-NC RLY3-NC RLY1-NO RLY3-NO RLY1-COM RLY3-COM AOUT+ AOUT- 4-20mA+ 4-20mA- AC INLET DF-745 Installation, Start Up and Shut Down... -
Page 23: Analyzer Start Up
4.2 Analyzer Start Up It is important to note that, if equipped with automatic gas valves, the moisture cell is isolated from gas flow while the analyzer is off power. Open the door and turn on the power using the main power switch inside the analyzer. See Figure 2. -
Page 24: Gas Pressure And Flow Settings
The moisture cell outlet will be connected to the supplied aspirator or, if 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-desorption of trace moisture on the walls of the tubing. -
Page 25: Download System Data
e. Use the regulator to adjust 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 minimize gas consumption but the flow rate will directly impact the overall system speed of response. -
Page 26: Figure 9: Block Diagram Of Gas Flow Path And Aspriator
valve closes as well. Throughout this process a message appears over the display instructing the user to wait 40 seconds. Once complete, the message disappears and the user may shut the power off with the switch behind the front door that initiates the computer shut down sequence that takes an additional 40 seconds. -
Page 27: Figure 10: Block Diagram Of Gas Flow Path With Optional Valves And Aspirator
FLOW METER (FRONT) .010 ORIFICE FLOWSWITCH Figure 10: Block Diagram of Gas Flow Path with Optional Valves and Aspirator Installation, Start Up and Shut Down REAR PANEL DF-745 MOISTURE SENSOR OUTLET ASPIRATOR WITH BUILT IN VACUUM CONTROL NEEDLE VALVE MOISTURE SAMPLE VENT 80 psi IN TO CREATE VACUUM... -
Page 29: Options
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 switch and other internal components. The lock is supplied with two keys. If the analyzer is operating, the key lock does not prevent adjustments from the front panel. -
Page 30: Installation Of The Vacuum Pump
breaker switch. The pump connection should be made directly to the Moisture Sample Outlet as described in section 5.6.2. Figure 11: Vacuum Pump Assembly 5.6.1 Installation of the Vacuum Pump Mount the vacuum pump to the bracket Connect the line from the moisture sample outlet to the needle control valve and vacuum pump ... -
Page 31: Figure 12: Vacuum Pump Mount Dimensions
3.94 [100.08] Ø.28[Ø7.14] 4 PL MOUNTING FOR REAR OF BRACKET 4.25 [107.95] 6.59 [167.33] Options DF-745 5.17 [131.32] 4.92 [124.97] Ø.28 [Ø7.14] 4 PL MOUNTING FOR 6.89 [175.01] BOTTOM OF BRACKET Ø.28 [Ø7.14] 3.94 [100.08] 4 PL 2 PL MOUNTING FOR LEFT OR RIGHT SIDE OF BRACKET 3.94 [100.08] 2 PL... -
Page 32: Moisture Sample Gas Outlet Connection To Vacuum Pump
5.6.2 Moisture Sample Gas Outlet Connection to Vacuum Pump The sample gas outlet connection is a ¼ inch compression fitting labeled Moisture Sensor Outlet as shown in Figure 4 and Figure 5. Use the polyethylene tubing provided with the analyzer to connect between the outlet fitting and the ¼ inch fittings on the needle control valve and vacuum pump (included separately). -
Page 33: Figure 15: Block Diagram Of Gas Flow Path And Optional Vacuum Pump
FLOW METER (FRONT) .010 ORIFICE Figure 15: Block Diagram of Gas Flow Path and Optional Vacuum Pump FLOW METER (FRONT) .010 ORIFICE FLOWSWITCH Figure 16: Block Diagram of Gas Flow Path with Optional Valves and Vacuum Pump Options DF-745 REAR PANEL MOISTURE SENSOR OUTLET PROCESS INLET MOISTURE SENSOR OUTLET... -
Page 35: Connecting To External Devices
6 Connecting to External Devices The analyzer can be interfaced to a variety of external devices via the ports on the rear panel. Alarm contacts, voltage, and current outputs, and serial communications are supported. All outputs, analog or digital, are fully isolated from earth ground. During the six minute warm up period all analog and digital outputs are held to an artificial 0.011ppb reading to avoid the reporting of false readings. -
Page 36: Analog Signal Outputs - J4
A program to facilitate serial communications is available from Delta F. Pin # J5-8 J5-7 J5-6 J5-5 J5-4 J5-3 J5-2 J5-1 Table 2: Pin-out of Serial Comm Connector J5 DF-760/750 1: RX+ 2: TX+ 8: Gnd 5: RX- 7: TX- 6.2 Analog Signal Outputs –... -
Page 37: Relay Ports - J8, J9
The 4-20 mA analog output correlating 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) ground. The maximum load resistance for each is 1K Ohms and the analyzer provides a compliance voltage of approximately 28 VDC. -
Page 39: User Interface
7 User Interface 7.1 Data Display Screen The front panel display consists of the Graphical User Interface (GUI), as displayed on the view screen in Figure 18 below. The various elements of the main data display screen are as follows: ... -
Page 40: Menu Structure
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 ( the desired selection is highlighted, the right arrow will access the submenu if available (denoted by a right arrow next to the menu text). -
Page 41: Isolate Analyzer - Optional
The Main Menu is accessed by pressing the Menu key on the front panel. Use the arrow keys ( ) to navigate up and down through the list. Select the highlighted item with the Enter key on the front panel. If a menu item is grayed out as shown in Figure 21, then the option is not installed, and as a result the item is not available. -
Page 42: Restore Sample Gas Flow - Optional
While the moisture cell is isolated from gas flow, a warning will appear at the bottom of the main display indicating “Isolated”. 7.4.2 Restore Sample Gas Flow – Optional This command allows the user to return the analyzer gas flow to normal after isolation. 7.4.3 Calibrate Menu “Calibration”... -
Page 43: Figure 25: Calibrate Menu
7.4.3.1 Check/Adjust Zero The Check/Adjust Zero screen displays many pieces of information including a live reading of moisture in ppb (or ppm) and the state of the zero gas control valves. Also depicted are Zero Reference and Zero Offset values. The Zero Reference value is a reflection of the deviation of the instrument’s baseline from what was set at the factory. -
Page 44: Figure 27: Check/Adjust Zero Screen
A relay is available on the Analog Output Setup Screen (see page 55) to signal that a zero calibration is taking place, and the analog output signal can also be frozen or allowed to update during the calibration process. 7.4.3.1.1 User Zero Offset The User Zero Offset function enables the user to add a given moisture ppb value to the displayed concentration. -
Page 45: Figure 29: Manual Zero Screen
back and change the value or move to the Done button, followed by hitting the Enter key to leave the screen. Using the ESC key at any time will exit the screen making no changes and return to the main display. 7.4.3.1.2 Do A Manual Zero The manual zero command enables the user to zero the moisture cell in an interactive manner. -
Page 46: Figure 30: Data History Menu
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 strip chart form on the front display. By default, the data history screen displays data for the most recent 24 hour period sampled at 1 point per minute (fixed) and the y-axis is auto- scaling. -
Page 47: Figure 31: Data History Screen
Firmware version Serial # Model # Start time End time Date 5/16/03 5/16/03 5/16/03 5/16/03 5/16/03 5/16/03 User Interface Figure 31: Data History Screen Figure 32: Install Media 0.6.1 ND-10016 DF-745 05-01-2003 03:07 PM 05-22-2003 03:07 PM Time 1:24 PM 5.423 1:25 PM 5.423... -
Page 48: Figure 34: Data Downloader Menu
7.4.5 Data Downloader Routine The Moisture Data Downloader screen, Figure 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 ( ... -
Page 49: Figure 36: View Location Screen
7.4.5.2 View Location The view location function is used to view data previously stored in the system sorted by location. On the Moisture Data Downloader screen Figure 35, use the Next key to move to the list of existing names and then use the arrow keys ( desired. -
Page 50: View Logs Menu
Use the arrow keys ( each character. If an error is made use the Next key to move to the Clear Entry key and hit enter. When the location name is complete use the Next key to move the highlight to Accept New Location and hit Enter. -
Page 51: Figure 40: Zero Log Screen
the event of an Automatic Zero, if it were scheduled. The time to perform the zero and the resulting zero reference are also noted. 7.4.6.2 System Error Code Log The System Error Log reports functional errors in the moisture system. If the error persists for more than 30 minutes, the code is displayed, if warranted. -
Page 52: Figure 42: System Error Code Screen
Contact Delta F for assistance in interpreting the various codes if one should appear on the screen. Figure 42: System Error Code Screen 7.4.6.3 Pump Capacity Test Log Figure 43: Pump Capacity Test Log Menu The pump capacity test is used to determine the condition of the aspirator or vacuum pump which in turn will have a direct impact the flow of gas through the analyzer. -
Page 53: Figure 44: Pump Capacity Test Log
7.4.7 Analyzer Setup The analyzer setup menu allows the user access to the Gas Scale Factor settings, Alarm Setups, Analog Output setup and Graph setup. Use the arrow keys ( return to the main display. 7.4.7.1 Sample GSF The GSF setup (Gas Scale Factor) is critical for obtaining quantitatively correct results. It accounts for the fact that moisture molecules have different absorption features in different buffer gases. -
Page 54: Figure 46: Sample Gsf Setup Screen
Use the Next key to move from between fields and use the arrow keys ( to change the highlighted selections and to enter numerical values. When done, use the Next key to move to the Accept button and hit the Enter key to return to the main display. Using the ESC at anytime will exit the screen making no changes and return to the main display. -
Page 55: Figure 49: Alarm Setup Menu
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 restore any flow until the fan problem has been fixed. -
Page 56: Figure 50: Alarm Setup Screen
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 the Alarm Status line above the display. See Figure 18. This action will not clear the alarm. Only restoration of the condition that existed prior to the alarm will clear the alarm. -
Page 57: Figure 51: Temperature Alarm Setup
7.4.7.5 Temperature Range 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 temperature exceeds preset limits. The user may assign the temperature alarm to one of four relays. -
Page 58: Figure 53: System Alarm Setup
to trip if the pressure exceeds preset limits. The user may assign the pressure alarm to one of four relays. The limits are not user adjustable but are set automatically on the basis of the background gases entered in the GSF screen. See page 49 for additional information on setting the background gases. -
Page 59: Figure 54: Analog Output Setup Menu
7.4.8 Analog Output Setup The Zero Point corresponds to the lowest voltage or current output (0 VDC, 4 mA) that is sent to a recorder, while the Full Scale corresponds to the maximum voltage or current output (1/5/10 VDC or 20mA) that is sent. The Full Scale set point (FS) is set from 0.002 ppm to 20.00 ppm. -
Page 60: Figure 56: Graph Setup Menu
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 The graph setup is used to adjust the time scale on the main data display of the analyzer. -
Page 61: Figure 58: Active Zero On/Off Menu
7.4.10.1 Active Zero On/Off 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 after a prolonged or abnormally high moisture exposure. This feature ensures that accurate low ppb H O readings can be made as soon as possible after initial startup, or after a high H... -
Page 62: Figure 59: Test Relays Menu
If the Active Zero Offset feature is turned off, the User Zero Offset 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’... -
Page 63: Figure 61: Test Analog Outputs Menu
7.4.10.3 Test Analog Voltage Output The Test Output screen, as shown in Figure 62, is used to calibrate the analog recorder output. When the Test Output screen is selected, the NEXT key is used to move to the percentage field where the arrow keys ( setting. -
Page 64: Figure 63: Signal Monitor Menu
7.4.10.4 Signal Monitor 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 parameters can be used as a diagnostic tool. See page 47 for additional information on system errors. 7.4.10.5 Pump Capacity Test The pump capacity test can be used to determine the ultimate vacuum that the aspirator or... -
Page 65: Figure 65: Pump Capacity Test Menu
Figure 65: Pump Capacity Test Menu After the pump test is complete, an entry is automatically put in the pump capacity test log as shown in Figure 68. See page 48 for additional information on the pump test log. Figure 66: Pump Capacity Test Screen Figure 67: Pump Pressure Failure User Interface DF-745... -
Page 66: Figure 68: Pump Capacity Test Log
Figure 68: Pump Capacity 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 ( ) as indicated to make adjustments. -
Page 67: Figure 71: Power Up Default Menu
7.4.12 Power Up Default – Optional This menu item is only available on analyzers equipped with the isolation valve option. The Power Up Default SubRoutine allows the user to determine the various default states during analyzer power up. The power up states are useful because they determine whether, for instance, the sensor is protected from ambient air contamination or whether it is configured the best way for rapid station to station transfer and measurement. -
Page 68: Date/Time
7.4.13 Date/Time Figure 73: Date/Time 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 ( ) are used to change the numerical digits and units. When in the Time Zone field the left and right arrow keys toggle through the various options. -
Page 69: Communications
7.4.14 Communications The Communications screen is used to set parameters related to serial PC communications. Accessed from the System menu, the Next key is used to moved from field to field, and the arrow keys ( baud rate. When done the Next key is used to move to the Accept field and the Enter key is hit. -
Page 70: Figure 77: Download System Data Menu
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: Download System Data Menu Figure 78: Insert Media Figure 79: Media Warning If there is insufficient space available on the media a warning will appear as in Figure 79. -
Page 71: Figure 80: Download Time Line
The file name is automatically created and includes the date and time that the data was recorded as well as the serial number of the analyzer. All files are then automatically compressed and loaded as one file on the memory stick, which then can be used to forward the information to Delta F for evaluation. -
Page 72: Figure 82: System Info Screen
Figure 82: System Info Screen 7.4.16.1 Firmware Upgrade While the Firmware Upgrade box is highlighted, hitting the Next key will bring up the Firmware Upgrade dialog box as in Figure 83 below. Figure 83: Software Upgrade Screen Place the USB memory stick in the external USB socket located behind the front door, When ready hit the Yes, Proceed key and follow the instructions. -
Page 73: Sample Gas Preparation And Delivery
8 Sample Gas Preparation and Delivery 8.1 Introduction It is important to note key differences in each parameter to ensure a properly functioning system. Parameters such as flow, pressure, and background gas will have major effects on total system performance. 8.2 Sample Flow Rate and Pressure Proper moisture analyzer operation is dependant upon the pressure of the sample gas. -
Page 74: Flammable Sample Gas
such as Helium and Hydrogen whose flow rates should be set to approximately one-third that of Nitrogen. 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 the sample system into the analyzer enclosure, or the room, where ignition is possible. -
Page 75: Service
9 Service 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 written request via their Service Fax Line at (781) 932-0053. - Page 76 6. Install valve plate, head gasket and head 7. Install head bolts and torque to 80 in-lbs. Service...
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Page 77: Table 8: Replaceable Parts List
9.3 Replaceable Parts List When ordering parts, please be certain to supply the model number and serial number of your analyzer. PART NO. 10424570 54000001 14241410 63000308 63000309 63000004 76000018 65000100 60300241 60300268 45002363 45002331 59017237 10425870 47500000 49600512 58000001 Service PART DESCRIPTION Printed Circuit Boards... -
Page 79: Troubleshooting The Df-745 Nanotrace Analyzer
9.4 Troubleshooting the DF–745 NanoTrace Analyzer The DF-700 series moisture analyzer constantly performs internal monitoring of the analyzer operation. In the event of a failure a system alarm will be displayed on the front panel. In addition the failure will be logged in the System Error Log (see page 47). In the event of a system alarm contact Delta F with information as displayed in the log as well as on the Signal Monitor screen as shown on page 60. -
Page 81: Theory Of Operation
10 Theory of Operation 10.1The Moisture Measurement 10.1.1 Moisture and the IR Spectrum The Nanotrace Moisture analyzer uses infrared (IR) absorption as its detection method. IR absorption is but a subset of the overall field of “spectroscopy,” which measures the interaction of light and matter. -
Page 82: Absorption Spectroscopy
10.1.2 Absorption Spectroscopy The relationship that defines absorption spectroscopy is known as Beer’s Law. Beer’s Law equates, in rigorous terms, the concentration of any absorbing molecule based on absorbed light intensity at a particular wavelength, given knowledge of the molecule’s absorption strength and the “path length”... -
Page 83: Safety
11 Safety 11.1General Warnings Potentially hazardous AC voltages are present within this instrument. Leave all servicing to qualified personnel. Disconnect the AC power source when installing or removing: external connections, the sensor, the electronics, or when charging or draining electrolyte. Do not setup or operate the Analyzer without a complete understanding of the instructions in this manual. -
Page 85: Warranty
12 Warranty Delta F Corporation 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 year from delivery to the carrier and found, to the Seller's satisfaction, to have been so defective. -
Page 87: Index
13 Index 4-20mA Outputs, 32 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 Analyzer Specifications General, 9 Moisture, 9... - Page 88 Operating Voltage, 25 Options, 25 Power Up Default, 63, 64 Pressure Alarm Setup, 53 Pump Capacity Test, 60 Pump Capacity Test Log, 48 Pump case purge, 89 Relay Ports, 33 Relays, Test, 58 Restore Sample Gas Flow, 38 Safety, 79 Symbols and Explanations, 79 Sample Gas Flammability, 70 Sample Gas Preparation and Delivery, 69...
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Page 89: Appendix A - User Menu Screens
14 Appendix A – User Menu Screens Page 37 Page 42 Page 47 Appendix A – User Menu Screens Page 38 Page 44 Page 46 Page 48 DF-745 Page 39... - Page 90 Page 49 Page 55 Page 57 Page 59 Page 51 Page 56 Page 58 Page 60 Appendix A – User Menu Screens...
- Page 91 Page 60 Page 62 Page 63 Page 64 Page 65 Page 66 Page 67 Appendix A – User Menu Screens DF-745...
- Page 92 Appendix A – User Menu Screens...
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Page 93: Appendix B - Hydrogen Service Safety System
15 Appendix B – Hydrogen Service Safety System The Hydrogen Service Safety System is designed to safeguard the 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 remote pump, if equipped, are both protected by maintaining a safe condition within their respective enclosures. -
Page 94: Operation
The pump enclosure must be mounted to a nearby wall or inside the rack shared by the 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. - Page 95 adequate pump cooling. The purge flow rate is set to 30 scfh as indicated on a rotometer mounted on the side of the pump enclosure. An in-line flow switch will trip at a flow rate of less than 26 scfh assuring adequate flow. Loss of purge flow breaks the contacts in the flow switch, which in turn trips a mercury relay that removes power to the pump.
- Page 96 The operator is obligated to assure proper operation of the analyzer air flow system as designed. Do not impede air flow at the inlet in the front door or at the exhaust fan outlets on either side of the cabinet in the rear. NOTES For hydrogen, which has a lower explosive limit (LEL) of 4%, the maximum allowable influx in event of an internal leak would be 120 scfh, whereas the normal flow as defined in...
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Page 97: Figure 85: Hydrogen Service Safety System
Figure 85: Hydrogen Service Safety System Appendix B – Hydrogen Service Safety System DF-745... -
Page 98: Figure 86: Pump Purge Option
Figure 86: Pump Purge Option Appendix B – Hydrogen Service Safety System...