MODEL ATV 4/6 BATTERY POWERED DIGITAL VACUUM INSTRUMENT

Transcription

1 MODEL ATV 4/6 BATTERY POWERED DIGITAL VACUUM INSTRUMENT Contains Operating and Programming Information

2

3 Model ATV 4/6 Battery Powered Digital Vacuum Instrument ã 1996, Teledyne Electronic Technologies, Hastings Instruments Division All rights reserved. Hampton, Virginia, U.S.A. First Printing March 1996 Document Number: Rev. B

4 Manual Print History The print history shown below lists the printing dates of all revisions and addenda created for this manual. The revision level letter increases alphabetically as the manual undergoes subsequent updates. Addenda, which are released between revisions, contain important change information that the user should incorporate immediately into the manual. Addenda are numbered sequentially. When a new revision is created, all Addenda associated with the previous Revision of the manual are incorporated into the new Revision of the manual. Each new Revision includes a revised copy of this print history page. Revision A (Document Number )... March 1996 Revision B (Document Number )... Feburary 1999 Warranty Hastings Instruments warrants this product, for a period of one year from the date of shipment, to be free from defects in material and workmanship. This warranty does not apply to defects or failures resulting from unauthorized modification, misuse or mishandling of the product. This warranty does not apply to batteries or other expendable parts, nor to damage caused by leaking batteries or any similar occurrence. This warranty is in lieu of all other warranties, expressed or implied, including any implied warranty as to fitness for a particular use. Hastings Instruments shall not be liable for any indirect or consequential damages. Hastings Instruments will, at its option, repair, replace, or refund the selling price of the product if Hastings Instruments determines in good faith, that it is defective in materials or workmanship during the warranty period, and provided the item is returned to Hastings Instruments together with a written statement of the problem and a repair authorization number.

5 Table of Contents 1 General Information Introduction Features Vacuum Gauge Tube Accessories Specifications Receiving Inspection Power Supply Installation Battery Installation Optional Power Supply Installation Optional Gauge Installation Instrument Configuration Factory Calibration Values User Calibration Values Connection and Operation Instrument Connection to a Gauge Tube Basic Instrument Operation and Pressure Measurement Pressure Measurements using the DV-4 Gauge Tube Pressure Measurements using the DV-6 Gauge Tube Maintenance and Troubleshooting Instrument Maintenance Troubleshooting Guide Warranty Repair Non-Warranty Repair

6

7 1 General Information

8 1-2 General Information Introduction The Model ATV 4/6 is a compact, hand-held, battery powered, digital, LCD display vacuum instrument. It is designed to operate using a single 9 Volt battery (included with the unit), and either a DV-4 or DV-6 Hastings gauge tube dependant upon the range of measurement desired. The instrument comes packaged in a lightweight carrying case which can be used for the storage and protection of the instrument. Features Operates using an internal battery and/or an external AC/DC power adapter Direct reading LCD digital display. A single switch selects user parameters Automatic shut off circuitry to prolong battery life Custom two-point calibration using external instrumentation Selectable units of measure, mbar or Torr. Selectable tube, DV-4 or DV-6 Low battery voltage indicator Lightweight protective carrying case Vacuum Gauge Tube The ATV 4/6 is capable of performing pressure measurements from to 20 Torr or from to 20 mbar using a Hastings DV-4 and DV-6 vacuum gauge tube. DV-4 pressure range: 0.10 to 20 Torr or 0.13 to 20 mbar. DV-6 pressure range: to 1.0 Torr or to 1.3 mbar. Note: 1 Torr is equal to 1 mmhg or 1000 microns Hg. Hastings vacuum gauge tubes, DV-4 and DV-6, are not included with the purchase of an ATV 4/6 instrument. Accessories External Power Supply Any power supply capable of delivering VDC at 50mA with a 3.5mm diameter positive (+) polarity tip-end can be used with the ATV 4/6 instrument.

9 General Information 1-3 Specifications Pressure range to 20 Torr or 0.13 to 20 mbar (with DV-4 gauge tube) to 1 Torr or to 1.3 mbar (with DV-6 gauge tube) Operating temperature... 0 to 40 0 C ambient Storage temperature to 50 0 C ambient Current drain madc (ATV 4/6 with tube) Internal power supply...battery, 9V Internal battery usable life hours continuous (9V alkaline) Dimensions... Hand held display and control unit 4.72 x 2.36 x 1 (120 x 60 x 25 mm) Gauge tube interface module 3.00 x 1.30 dia (75mm x 33 mm dia) Weight (approx)...7 oz. (195 gm) Receiving Inspection Carefully unpack the Hastings Battery Operated Vacuum Instrument (p/n ATV 4/6). Inspect all items received at this time for any obvious damage that may have occurred during shipment. Immediately advise the shipping agent if there is any damage to any items in your shipment. Identify each item and the quantity received with those listed on the packing list. Accessories will be listed separately on the packing list.

10

11 2 Power Supply Installation

12 2-2 Power Supply Installation This section is designed to assist in placing the battery operated ATV 4/6 vacuum instrument into operation as quickly and easily as possible. Please read the following instructions thoroughly before installing and placing the instrument into service. Battery Installation Open the carrying case and remove the ATV instrument and battery. Place the instrument, display side down on a suitable flat surface. Depress the battery cover release latch, and slide the cover off of the bottom of the unit. Connect the supplied 9 Volt battery to the unit, insert it into the back of the instrument and reinstall the battery cover. (9 Volt Lithium or Nickel- Cadmium batteries may be substituted for the standard alkaline battery) Press and release the mode button. The following Display Sequence will indicate that the battery has been properly installed. -DISPLAY SEQUENCE- d--4 or d--6 down arrow plus d--4 or d--6 down arrow plus Err Instrument will power down and the display will go blank after approximately 30 seconds. Optional Power Supply Installation Hastings Instruments offers an AC/DC power supply that is suitable for use with the ATV instrument. Use of this power supply or any commercially available unit with the following specifications is recommended if making long-term continuous measurements, and the operating time of the instrument will exceed 8 to 10 hours. Class 2 transformer with output cable termination of 3.5mm with a positive (+) polarity tip-end. Input power : Nominal 120V 4 watts Output power: Rated 12VDC 50 ma Before connecting the external power supply make sure that the unit is off (display should be blank). Connect the AC/DC adapter male power plug into the female receptacle on the side of the unit and plug the adapter into a V 60Hz power source.

13 Power Supply Installation 2-3 Optional Gauge Tube Installation If you purchased a DV-4 or DV-6 gauge tube for use with your ATV instrument the following is information on the installation of these tubes. WARNING: Compression seal fittings Quick Connects are not for use in systems where the tube can be pressurized above atmosphere. All Hastings gauge tubes are shipped with a protective cap at the evacuation port to keep the thermopile elements clean and free from physical damage. Remove the protective cap prior to installation. The tube can be mounted in any orientation without affecting the calibration or performance. The recommended position is with the tube vertical and the stem down. If using Quick Connect compression fittings, installation of an isolation valve between the compression fitting and the vacuum system is recommended.

14

15 3 Instrument Configuration

16 3-2 Instrument Configuration This information is designed to prepare the instrument for a specific setup that will result in proper operation in the selected modes d-4 or d-6 when using either DV-4 or DV-6 gauge tubes. Factory Calibration Values (factory values are for use with any DV-4 or DV-6 gauge tube) Select Unit of Measure, DV-4 Tube, and Factory Calibration Values NOTE: Do Not connect ATV to gauge tube at this time. Press and hold Mode button, either mbar or Torr will be displayed. Release mode button. If desired unit of measure is not displayed, press and release mode button until display is correct. Either d--4 for DV-4 or d--6 for DV-6 will be displayed. If d--4 is not displayed, press and release mode button until d--4 is obtained. Cal-H is displayed. Press and release mode button. P 20 is displayed. Press and release mode button. Cal.L is displayed. Press and release mode button. Down arrow is displayed. Press and release mode button. Factory values for DV-4 have been entered. Down arrow and Err is displayed Following a delay period, the ATV will power down and the display blanks. Select Unit of Measure, DV-6 Tube, and Factory Calibration Values NOTE: Do Not connect ATV to gauge tube at this time. Press and hold Mode button, either mbar or Torr will be displayed. Release mode button. If desired unit of measure is not displayed, press and release mode button until display is correct. Either d--4 for DV-4 or d--6 for DV-6 will be displayed. If d--6 is not displayed, press and release mode button until d--6 is obtained. Cal-H is displayed. Press and release mode button. P 1 is displayed. Press and release mode button. Cal.L is displayed. Press and release mode button. Down arrow is displayed. Press and release mode button. Factory values for DV-6 have been entered. Down arrow and Err is displayed Following a delay period, the ATV will power down and the display blanks.

17 Instrument Configuration 3-3 User Calibration Values (user values are for use with only one DV-4 or DV-6 gauge tube) Select Unit of Measure, DV-4 Tube, and enter User Calibration Values. Install DV-4 gauge tube and pressure standard in vacuum system but Do Not connect ATV to gauge tube at this time. Press and hold Mode button, either mbar or Torr will be displayed. Release the mode button. If desired unit of measure is not displayed, press and release mode button until display is correct. Either d--4 for DV-4 or d--6 for DV-6 will be displayed. If d--4 is not displayed, press and release mode button until d--4 is obtained. Cal.H is displayed. Press and release mode button. P 20 is displayed. Connect ATV to DV-4 gauge tube and evacuate to a pressure less than 2.0E + 01 Torr (<20.00 Torr). Raise pressure by backfilling system using nitrogen gas or high purity dry air until pressure standard in use indicates a stable value at 2.0E + 01 Torr (20.00 Torr). Press and release mode button to enter user calibration value for Cal.H into ATV memory. Cal.L is displayed. Press and release mode button, 0.10 is displayed. Evacuate DV-4 gauge tube to a pressure less than 1.0E-01 Torr (<0.1 Torr). Raise pressure by backfilling system using nitrogen gas or high purity dry air until pressure standard in use indicates a stable value at 1.0E- 01 Torr (0.100 Torr). Press and release mode button to enter user value for Cal.L into ATV memory. Following a delay period, the ATV will power down and the display blanks. Note: Making changes while in the calibration mode, other than selecting unit of measure, may result in the lose of user calibration values. Select Unit of Measure, DV-6 Tube, and enter User Calibration Values. Install DV-6 gauge tube and pressure standard in vacuum system but Do Not connect ATV to gauge tube at this time. Press and hold Mode button, either mbar or Torr will be displayed. Release the mode button. If desired unit of measure is not displayed, press and release mode button until display is correct. Either d--4 for DV-4 or d--6 for DV-6 will be displayed. If d--6 is not displayed, press and release mode button until d--6 is obtained. Cal.H is displayed. Press and release mode button. P 1 is displayed. Connect ATV to DV-6 gauge tube and evacuate to a pressure less than 1.0E + 00 Torr (<1.00 Torr). Raise pressure by backfilling system using nitrogen gas or high purity dry air until pressure standard in use indicates a stable value at 1.0E + 00 Torr (1.00 Torr). Press and release mode button to enter user calibration value for Cal.H into ATV memory. Cal.L is displayed. Press and release mode button, is displayed. Evacuate DV-6 gauge tube to a pressure less than 1.0E-03 Torr (<0.001 Torr). Raise pressure by backfilling system using nitrogen gas or high purity dry air until pressure standard in use indicates a stable value at 1.0E-03 Torr ( Torr). Press and release mode button to enter user value for Cal.L into ATV memory. Following a delay period, the ATV will power down and the display blanks. Note: Making changes while in the calibration mode, other than selecting unit of measure, may result in the lose of user calibration values.

18

19 4 Connection and Operation

20 4-2 Connection and Operation Instrument Connection to a Gauge Tube CAUTION: When disconnecting the ATV from a gauge tube, pull the interface module straight away from the tube until the two items are completely separated. Failure to do this can result in the breaking of the center post or key guide of the gauge tube. Connect the interface module of the ATV to the connector base of either a DV-4 or DV-6 gauge tube. Do not install any extension or adapter cables between the module and the gauge tube.

21 Connection and Operation 4-3 Basic Instrument Operation and Pressure Measurement There are only two basic modes of operation, Auto-Off (about 40 seconds of active display) and Continuous On (display is always active). Instrument operation is initiated by momentarily pressing the mode button. Upon doing this the instrument is now powered on and defaults to the Auto-Off mode. To change the mode of operation to a continuous mode press and hold the mode button until the up arrow symbol appears in the display. At this point release the button. Select the mode of operation by momentarily pressing the mode button. When doing this the display will switch from displaying the up arrow and the down arrow each time the button is pressed. By leaving the down arrow symbol on the display, the instrument will remain in the Auto-Off mode. Leaving the up arrow will place the instrument in the Continuous On mode. Pressure Measurements using the DV-4 Gauge Tube Connect the ATV s interface module to the DV-4 gauge tube. Momentarily press the mode button and verify that d--4 and Torr or mbar are displayed and are correct for the instruments intended use. If the displayed values are incorrect, refer back to Section 3. Press and release the mode button of the instrument, d--4 will appear on the display momentarily. The pressure reading will now be displayed for about 40 seconds if the instrument is in the auto-off mode (down arrow symbol). If continuous operation is desired, press and hold the mode button until the up arrow symbol appears on the display, then release the mode button. After completing measurements using the continuous on mode, press and hold the mode button until the down arrow symbol appears in the display. Release the mode button. The instrument will continue to display the system pressure for approximately 40 seconds before the unit powers down and the display goes blank. If the system pressure is lower than the instruments range, ur will appear on the display indicating an underrange condition. When system pressure is greater than the instruments measuring capabilities, or will be displayed indicating an overrange condition. Pressure Measurements using the DV-6 Gauge Tube Connect the ATV s interface module to the DV-6 gauge tube. Momentarily press the mode button and verify that d--6 and Torr or mbar are displayed and are correct for the instruments intended use. If the displayed values are incorrect, refer back to Section 3. Press and release the mode button of the instrument, d--6 will appear on the display momentarily. The pressure reading will now be displayed for about 40 seconds if the instrument is in the auto-off mode (down arrow symbol). If continuous operation is desired, press and hold the mode button until the up arrow symbol appears on the display, then release the mode button. After completing measurements using the continuous on mode, press and hold the mode button until the down arrow symbol appears in the display. Release the mode button. The instrument will continue to display the system pressure for approximately 40 seconds before the unit powers down and the display goes blank. If the system pressure is lower than the instruments range, ur will appear on the display indicating an underrange condition. When system pressure is greater than the instruments measuring capabilities, or will be displayed indicating an overrange condition.

22

23 5 Maintenance and Trouble shooting

24 5-2 Maintenance and Troubleshooting Instrument Maintenance The only authorized maintenance at the user level for the ATV 4/6 is the replacement of the 9V battery. Consult the troubleshooting guide for additional information. Reference Tube Calibration The low end of the vacuum range can be set with a Hastings reference tube, such as the DB-16D, which is used with the d 4 range, or the DB-20 which is used with the d 6 range. The DB-16D must have a marked calibration value between 0.10 Torr and 0.20 Torr. The DB-20 must have a marked calibration value between Torr and Torr. Connect the ATV coupler to the Reference Tube. Press and hold down the MODE switch until the unit of measure appears in the upper right hand corner of the display. Release the mode switch. If the unit is mbar, press and release the MODE switch to get Torr. In about 5 seconds the display will indicate the tube type, either d-4 or d-6. If the Reference Tube is a DB-16D the tube type should be d 4, if the Reference Tube is a DB-20, the tube type should be d 6. If it is correct, do nothing. If you wish to change it, press and release the MODE switch. In about 5 seconds the display will indicate CAL.H. Do not press the MODE switch again until the display indicates CAL.L. CAUTION: Pressing the MODE switch while in the CAL.H mode will cause the ATV to accept the Reference Tube output as the high calibration value rather than the low calibration value. In about 5 seconds, the display will indicate CAL.L. Press and release the MODE switch. The display will indicate 0.10 Torr if d 4 was selected or Torr if d 6 was selected. Press and hold down the MODE switch until the indicated pressure matches that marked on the Reference Tube. NOTE: Some DB-16D Reference Tubes may be marked in mmhg and some DB-20 Reference Tubes may be marked in microns Hg. To convert: 1 mmh = 1 Torr 1 micron Hg = Torr This completes the Reference Tube calibration. In about 25 seconds the ATV will turn off. Note: Making changes while in the calibration mode, other than selecting unit of measure, may result in the lose of user calibration values. Troubleshooting Guide Symptom: Display reads Err instead of the system pressure. Cause: Gauge tube disconnected, or defective gauge tube Action: Check connection between the instruments interface module and the tube. If problem still persists connect instrument to a new gauge tube. If unit is still not functioning properly, consult factory. Symptom: Display reads batt. Cause: Battery voltage is too low. Action: Replace the 9V battery.

25 Connection and Operation 5-3 Symptom: Abnormal pressure readings. Cause: Incorrect gauge tube type connected to instrument. Action: Verify that the tube is of the correct type that the instrument is setup and calibrated for. If the problem still persists, consult the factory. Symptom: Blank display, mode switch is inoperative. Cause: Battery voltage is too low. Action: Replace the 9 V battery. If problem still persists, consult factory. Symptom: Inoperative gauge, power input is normal. Cause: Defective instrument. Action: Return to factory for repair or replacement. Warranty Repair Hastings Instruments warrants this product, for a period of one year from the date of shipment, to be free from defects in material and workmanship. This warranty does not apply to defects or failures resulting from unauthorized modification, misuse or mishandling of the product. This warranty does not apply to batteries or other expendable parts, nor to damage caused by leaking batteries or any similar occurrence. This warranty does not apply to any instrument which has had a tamper seal removed or broken. This warranty is in lieu of all other warranties, expressed or implied, including any implied warranty as to fitness for a particular use. Hastings Instruments shall not be liable for any indirect or consequential damages. Hastings Instruments will, at its option, repair, replace, or refund the selling price of the product if Hastings Instruments determines in good faith, that it is defective in materials or workmanship during the warranty period. Defective instruments should be returned to Hastings Instruments together with a written statement of the problem and a Return Material Authorization (RMA) number. Please consult the factory for your RMA number before returning any product for repair. Non-Warranty Repair Any product returned for a non-warranty repair must be accompanied by a purchase order, RMA form and a written description of the problem with the instrument. If the repair cost is higher, you will be contacted for authorization before we proceed with any repairs. If you then choose not to have the product repaired, a minimum will be charged to cover the processing and inspection. Please consult the factory for your RMA number before returning any product for repair. TELEDYNE ELECTRONIC TECHNOLOGIES Hastings Instruments 804 Newcombe Avenue Hampton, Virginia U.S.A. ATTN: Repair Department Telephone FAX