Teledyne HVC-282 User's Manual
Contents
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5. MODEL HVC 282 VACUUM CONTROLLER TELEDYNE gg 50 9001 9001 M iu EP Ub KEMA CERT 10192 01 10192 01 A Teledyne Technalogies Company Ew Manual Print History T heprint history shown below lists the printing dates of all revisions and addenda created for this manual T herevision level letter increases alphabetically as the manual undergoes subsequent updates A ddenda which are released between revisions contain important change information that the user should incorporate immediately into the manual Addenda are numbered sequentially W hen anew 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 Document umber 129 051994 M ay 1994 Revision Document N umber 129 082002 August 2002 CAUTION Refer to accompanying documents for electrical connections designed for class installations astings Instruments reserves the right to change or modify the design of its equipment without any obligation to provide notification of change or intent to change TABLE OF CONTENTS SECTION 1 0 GENERAL 5 PIE 5 1 2 Operating Principle EE 5
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8. accuracy will require a Primary Standard and pump system with the ability of pumping down to at least 1m Torr or better Please refer to Figure 2 1 NOTE Forbest possible results temperature changes mustbe minimized i e handling mustbe minimized See Sec 3 2 Please read Section 3 2 a Apply 350mVDC 50uV to pins 8 amp 2 b Pump system gauge tube down to hard vacuum lt 1m Torr Using a DVM with a 200mV or better scale connected to 4 amp 6 and adjust center pot in gauge tube to 0 000mV 5uV d Bring system gauge tube to 15 000 1 mTorr Increase applied 350mV to 929 85mV 50u V CAUTION Possible gauge tube damage will result if at less than 15 Torr PAGE 10 f Adjust outside pot to read 2 630mV 5uV on DVM g DV 273 gauge tube is now calibrated HVC 282 calibration Course adjustment Caution Resistor connections are not to any power terminals a With power off connect an 86 6 ohm 1 1 8W resistor to tube terminals white amp green b Connecta 28 ohm 1 1 8W resistor to tube terminals red and black Connect a DVM to measure mV across the 28 ohm resistor with lead to red terminal With power on adjust trim pot on right side of can Viewed from front display to set 350mV 0 5mV e Set units display to read 0 00 by adjusting zero pot at rear of can f With power off attach a2 630mV 5uV DC source across white green the 86 6 ohm resistor g With power on adjust span po
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10. ON This manual contains technical and general information concerning the installation operation and calibration of the Hastings HVC 282 Vacuum Gauge and associated components For proper operation the Hastings HVC 282 Vacuum Gauge mustbe suitably connectedto a Hastings Model DV 273 Gauge Tube Attempting to use this Vacuum Gauge with any other transducer may damage the gauge and or transducer 1 1 Description The HVC 282 vacuum instrument offers a digital readout of 0 20 Torr with 0 01 Torr resolution with two adjustable set point relays using a international input power supply for 1 15 220VAC 50 60Hz operation depending on internal switch configura tion Please see Sec 4 0 allin astandard Hastings VT Gauge unit The DV 273 Hastings gauge tube is rugged but sensitive specifically made for this range and matched for interchangeability without recalibration giving extra versatility for all vacuum applications Tubes are temperature compensated butdorespondto large AT transients requiring insulating tubes to reduce temperature transients 1 2 Operating Principle Operation of the HVC 282 Vacuum Gauge is based on a low voltage DC bridge which heats a noble metalthermopile A change in pressure creates a change in the thermal conductivity of gas surrounding the thermopile thus at vacuum little power is used to heat the thermopile and at full scale requires maximum power Power level is indicative of vacuum level presentin tube 1 3 Spe
11. S QJN 1 dvd 290 60 1 y 9 LL lud 050 61 008 02 41 45 1 v 1 10 2 12910 vVLENL 390191 011 10 8 8 q Y3N3Z ALS 689 NL 340 0 91 10 6 610 902 055 LHOMVIG 3010 031 991 10 6 210 IP 1 17 3 9 5 1801 529 15 NNOO lt 90 02 9 1 27 OL YWZ 18 AYIL 90 0 9 2 8 M 8 1 WHO 0001 544 0 2 10 8 9090202 0 68 8 1 WHO 2667 SIH 1 2 10 8 9 62M M 8 1 WHO MOL 534 Z Z 10 8 613 8 1 WHO 93 34 S Z 10 8 9 914 8 1 WHO 46 06 534 6 10 8 cy 8 1 WHO 4002 534 0 10 9 8 6195 1 M 8 1 WHO MOOL 534 172 10 98 2 6 M 8 1 WHO AZO 534 2 6 10 8 07 GN M 8 1 WHO 00 534 6 0 8 2112 11413 WLAN GSSNY 91 7 1 WHO MES 534 09 10 8 cC 67415 WLIW ASSNY XL r L WHO lt 6 53 69 10 8 LC 1M dj 00 SNYG WHO MS 104 910 40 6 2 311551 WILNI 3 9 1 0 NDILdIS2S30 5 5 18 30 ION aanss y 16 66 A38 NUR UN UN WOS4 3ZIS TENA sjueuingjsu 5 0948 AldS 43MOd 68 Od ONIVIINIDN NMOYA WNVMHOVIO AENISSV 203731 80 1511 SIANG ON DM0 438 NOIL4I8I saq ao ON ur an cS GLOL ARO HOLIMS 970 20 0 S6 LS OIN TONY 14 1040 MS LSO 20 04 94 28 24
12. cifications Rangel 212 HL a as 0 20 Torr 0 01 Torr A anne 3 1 2 digit LCD display Linea M 0 2VDC 5 amp 3mV with fine span adjustment Set POMS 0 20 Torr 0 01 Torr stability of 3 counts over 0 to 50 Coperational range Deere E E 5 of reading amp 3 counts Gauge tube must be protected from large temperature transients See 3 2 Repeatability 1 of reading amp 3 counts Gauge tube mustbe protected from large temperature transients See 3 2 Power Requirements 115 15V or 220VAC 30V Selectable 50 60Hz lt 4 watts PAGE 5 FLORES eret eterna tecti wanan dag ga na yaaa SPDT N O N C upto 125VAC 10A or277VAC6A With onetime 1Osec delay to prevent relay chater only during unit power up Operational EMIS eas saa 22220 2 2 2 0424 dd 0010 50 C 8096 RH non condensating Storage 20 t0 50 C Non operational cu EE Hastings CVT Gauge standard package Weight Approx gana aa idang nnne nenne 20 20z 120z 0 58Kg 0 33Kg unit and cables respectively 6ft power cable and 8ft gauge tube cable supplied Gauge tube cable extensions available Tube Overpressul 150 psi Max Absolute pressure Gauge Tube Nickel plated steel with plastic octalba
13. eading thus this compression will tend to condense any vapors that are present This usually results in the McLeod Gauge reading a lower pressure than actual Unlike the McLeod Gauge the Hastings Thermopile Vacuum Gauges have the very useful property of responding to the total pressure of all gases and vapors that are present in the system gauge tube To exclude vapors from the McLeod Gauge it is necessary to employ a trap of some kind that will absorb or condense the vapors Water vapor is by far the most common source of difficulty A trap cooled by liquid nitrogen is effective in removing vapors also system must be given time to outgas Reference should be made to the instructions furnished by the manufacture to the suitability needs of Gauge used 6 2 Outgassing Hastings Gauge Tubes are made of materials that have been proven by years of usage to be relatively free from outgassing However all surfaces of glass and metal that are exposed to the vacuum system may liberate gases and vapors that were previously absorbed during exposure to the atmosphere If the sur faces are contaminated with foreign matter this outgassing may be much more persistent than if the surfaces are clean The possibility of outgassing must be considered in checking the accuracy of Hastings Gauges or in checking for leaks This is especially important when working with pressure of less than 10 microns of mercury or 01 millibars In this range of pressure outgassing f
14. he old tube which is most probably the result of tube contamination Calibration can possibly be restored by gently swishing solvent such as acetone or ethyl alcohol in the tube end After cleaning thoroughly air dry the tube Caution Do notuse high pressure air jet as this will damage the thermopile and damage gauge tube If calibration cannot be restored by this procedure replace the old tube with a new gauge tube The twotubes can track one another within close tolerance however variance of up to 2x of accuracy specification stated for tube may be seen or checkthe gauge tube by method described in Section 5 2 CAUTION Donotattemptto measure the resistance of the gauge tube element with a DVM while itis under hard vacuum unless it supplies less than 350mV to perform measurement or more than 929mV at 15 Torr and never more than 1 5V at ATM between pins 2 Black and 8 Red Agood tube will read around 25 30 ohms If open or damaged thermocouples will read much higher 5 2 Calibration AIIHVC 282 Vacuum Gauges have been carefully checked andcalibrated along with DV 273 Gauge Tubes which are independently matched for interchangeability If for some reason you need to calibrate either gauge or gauge tube please carefully follow calibrating instructions below DV 273 calibration We do not recommend recalibration of the DV 273 gauge tube because of equipment requirements but we do include a suitable method for your reference Best possible
15. ied hardware 3 2 Gauge Tube Installation Situate the gauge tube in aclean dry vacuum system with the open end pointing down so as to be self draining should any vapors condense in it see Section 6 0 Screw metal tubes into 1 8 female NPT threads using a suitable sealant Teflon tape is recommended or use Hastings Quick Connect O ring seals for a vacuum tight installation Do not use Quick Connectiftube will see pressures greater than ATM For information on Hastings Installation Accessories refer to Product Bulletin 352 Gauge tube may be operated immediately but best results will be obtained after the tube has outgassed for approximately 1 hour Tubes are temperature compensated but do respond to rapid transient environmental changes greater than 5 degree C min To minimize temperature transients effects please insulate gauge tube with glass wrap or other suitable insulation wrap PAGE 8 4 0 CPERATI ON 1 Plugin power cable into any single or two phase AC line for 115VAC or 220VAC 50 60Hz operation per unit configuration To change input voltage configuration remove all connecting wires to rear terminal strips then removing two small screws atrear remove can On lower PC board push slide switch toward rear of can for 115VAC and toward front of can for 220VAC reassemble in opposite order Remark canas to new voltage configuration A3 wire grounded power cord is supplied with all gauges if different connector is required
16. l materials exposed to the product during its use attach additional page if necessary PRODUCTS EXPOSED TO RADIOACTIVE MATERIAL CANNOT BE ACCEPTED BY HASTINGS INSTRUMENTS UNDER ANY CIRCUMSTANCES Signature of Hazards Control Officer For questions regarding use of the product and materials in contact with it Name Phone PAGE 15 PAGE 16 8 0 DRAWINGS and DIAGRAMS This section contains the schematics parts list and overall assembly drawings If replacement parts are desired they can be obtained from the factory by referencing the Hastings part number listed on the parts lists PAGE 17 JO ANON ONIAVad 9799 LON DA NUILV2I 1ddV 4350 ASSY 605 ON DAG ON WOS oa aN 082 2 038 ATdS H3MOd 08 241 AAS wang 19 SPW TIS NYOWO AT8IN3SSV SAGE SjueuunJjsu STONY 579841231 5 12 84 3NA03131 Mr A 1511 518494 ON 9 0 438 NONEM kon bec PAP 339 ASZ CAN 10 4421891 10 1 211 Go INVI A9 AAN ZZ 2 811 0 11 Liz 21111112 04199713 AGZ AAN OZv dVO 161 0 1 ETI INVL ASZ 272 4 2 91 20 1 Cv 829 INVL AOS AAN 02 2 lZ1 20 1 216 21019902 WLIW MOVLS S AO
17. nt 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 repair TELEDYNE HASTINGS INSTRUMENTS 804 NEWCOMBE AVENUE HAMPTON VIRGINIA 23669 U S A ATTENTION REPAIR DEPARTMENT TELEPHONE 757 723 6531 1 800 950 2468 FAX 757 723 3925 E MAIL hastings_instruments teledyne com INTERNET ADDRESS http www hastings inst com Repair Forms may be obtained from the Information Request section ofthe Hastings Instruments website PAGE 13 PAGE 14 7 3 Service Form Teledyne Hastings Instruments RMA 804 Newcombe Avenue contact factory Hampton VA 23669 U S A Telephone 757 723 6531 Fax 757 723 3925 Model Serial No P O No Date Name Phone Company Address City State Zip Describe problem Show a block diagram of your system including unit inlet and outlet pressures Calibration range Gas Cable length Power line voltage Variation Ambient temperature Gas Temperature Other If special modifications have been made by user please describe Application of product being returned Has this product been used with a hazardous material YES NO If YES please list types of gas chemicals common names specific chemical biological materials or other potentially harmfu
18. pair Policy 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 itis defective in materials or workmanship during the warranty period Defective instruments should be returned to Hastings Instruments shipment prepaid 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 Collect freight will not be accepted 7 2 Non Warranty Repair Policy 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 instrume
19. please substitute appropriate 3 wire grounded power cord Please allow 30 minutes for tube to adjust to new ambient conditions when moving gauge tube from one environment to another See section 3 2 2 Unitcan now be operated with a DV 273 that has been installed as detailed in Section 3 2 3 Relay set point are adjusted by pressing switch on front display toward HI or LO and using a small screwdriver to tum trim poton same side your pressing switch to adjust and set desired setpoint You may configure either N O orN C by choice of connection on back of terminal block See label on top of HVC 282 can 4 Oto 2VDC linear output may be finely adjusted by turning trim poton left center of can Viewed from front display PAGE 9 5 0 CAUBRATIONANDTROUBLESHOOTINGGU DE All Hastings Vacuum Gauges and Gauge Tubes have been carefully checked and calibrated atthe factory before shipment If acalibration check is desired the methods in the following sections may prove helpful 5 1 Checking of Tube The simplest and quickest method of checking operation and calibration of a gauge tube is to keep a new spare clean gauge tube on hand as a standard To check operation install both new and old gauge tubes together in the same clean dry vacuum system and pump until a steady pressure is obtained Plug the gauge onto both tubes alternately and check readings Ifthe old tube reads a higher pressure than the new one this indicates a shift in t
20. rom surfaces ina newly evacuated system may flood the enclosure Also if the system is being pumped continuously gauges spaced at different distances from the pump will register different pressures For reliable compari son of different Vacuum Gauge it is necessary then to insure that the vacuum system be free of any outgassing or other possible leaks and that they be taped to the system near the same point This can best be determined by closing the system off from the pumps and observing if there is any rise in pressure within the range of interest 6 3 Effect of Thermal Conductivity All Hastings Vacuum Gauges are originally calibrated in dry air Since this calibration is a function of thermal conductivity any gas having a thermal conductivity different from that of air will also have a different calibration 6 4 Effect of System Conductance Each element that makes up a vacuum system has associated with it a certain conductance this is the opposite of resistance For example baffles connecting tubing and sharp turns can all cause pressure drops throughout the system during pumping and during the time the system is reaching static equilibrium It is not an uncommon occurrence to measure different pressures at different locations in a vacuum system In checking the calibration of any vacuum gauge care must be taken to insure that the gauge and the reference are at the same pressure PAGE 12 70 SERVICEINFORMATION 7 1 Warranty Re
21. se HVC 282 55 282 DV 273 Gauge tube 55 273 1 4 Accessories EXTENSION CABLES Available in 12 ft 25 ft 50 ft and 100 ft lengths STOCK MODEL DESCRIPTION 65 113 TIN 8 VS 8 footreplacement cable 55 84 VP 12 VS 12 footextension cable 55 85 VP 25 VS 25 footextension cable 55 86 VP 50 VS 50 footextension cable 55 87 VP 100 VS 100 footextension cable GAUGE TUBE INSTALLATIONACCESSORIES Quick connecis dropouttraps adapters and valved quick connects see Product Bulletin No 352 PAGE 6 20 GAUGE TUBEANDCABLES 2 1 Gauge Tubes Octal sockets of standard metal tubes are color coded for easy identification DV 273 is dark blue The tubes are to be installed in 1 8 NPT female thread or in a Hastings type OS Quick Connector Maximum overpressure of gauge tube is 150 psi Construction of shell is of Nickel plated steel See section 1 2 for Operating Principle 2 2 Gauge Tube Cables The four color coded wires Black Red White Green are connected as shown on the label on the top of can See Figure 2 1 for socket connections Each instrumentis shipped with a 6 foot power cable and an 8 foot gauge tube cable Extension gauge tube cables are available See table in Sec 1 5 PAGE 7 3 0 INSTALLATION 3 1 Panel Mounting Section 8 of this manual shows an outline drawing detailing panel cutout for a standard Hastings CVT Gauge Install the meter on the panel using the suppl
22. t at rear of can till display reads 15 00 Torr Hastings HVC 282 is now coarsely calibrated Fine adjustment Due to bridge loading you will need to readjust zero and span pots using a good or above calibrated DV 273 a Connect and run unit for 30 minutes at hard vacuum lt 1mTorr so system may out gas b d e Readjust zero pot at rear of can if necessary to set display to read 0 00 Torr Using a Primary standard bring system up to 15 000 Torr 1mTorr Readjust span pot at rear of can if necessary to set display to read 15 00 Torr Fine Calibration is now complete 5 3 Check Against Primary Standard If additional calibrations of the vacuum gauge are desired an accurate measuring device such as the McLeod Gauge spinning rotor gauge or capacitance manometer may be employed as a reference Please refer to manufacture for the suitability requirements Please read Sec 6 PAGE 11 6 0 NOTES ON VACUUM MEASUREMENT 6 1 Effects of Condensable Vapors If the readings of Hastings Vacuum Gauges are to be compared with readings of other types of gauges consideration must be given to the possible effects of condensable vapors in the system on the other gauges For example none of the many types of the McLeod Gauge give correct readings if condensable vapors such as water alcohol acetone etc are present in the system gauge The McLeod Gauge operates by compressing residual gases and vapors to obtain a r
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