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101B - PAGE 10

3.0 INSTALLATION

3.1 Panel Mounting:

An outline drawing detailing panel cut-out dimensions is provided on page 29. Install the meter on the panel using the

supplied hardware.

3.2 Cabinet Models:

Cabinet models (VT-4B, VT-4S2, VT-4S, VT-5AB, VT-6B, VT-6S2, VT-6S) require only installation of gauge tube and

cable as described in the following sections. However, the cover must be removed to perform any necessary

calibration adjustments.

3.3 Power Switch:

If an ON-OFF switch is desired, a switch may be wired into the power cable to provide this function. If both "hot" leads are to

be broken, a double pole single throw switch should be utilized. The power cable may also be cut and wired into any master

switch or circuit breaker on a panel.
CAUTION: If cutting cables, DO NOT interchange power and gauge tube cables.

3.4 Hastings Multiposition Switching Capabilities:

3.4.1 Multiposition Switching Attachment

If a Hastings Panel Kit is utilized, an ON-OFF single pole switch, pilot light, and 8-foot cables are included with a 2 or

5 position (Model VL-2 or VL-5) selector switch which can monitor 2 or up to 5 stations.

3.4.2 Cabinet Models With Switching

Cabinet model vacuum gauges can be obtained with built-in switching arrangements that operate in the same

manner as the multiposition switching attachment. Models include the VT-4S2, VT-4S, VT-6S2, and VT-6S. No installation is

necessary other than that of the power cord and gauge tube.
NOTE: You must order gauge tube cables, type CF-XX-OFV, when using five-position cabinet models.

3.5 Gauge Tube Installation:

Situate the gauge tube in a clean, 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.

Glass tubes have 10mm (3/8") OD tubulation.
Gauge tube may be operated immediately, but best results will be obtained after the tube has outgassed for approximately 1

hour.

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Содержание DV-20

Страница 1: ...101B PAGE 1 TELEDYNE BROWN ENGINEERING HASTINGS INSTRUMENTS P O BOX 1436 HAMPTON VIRGINIA 23661 U S A TELEPHONE 804 723 6531 FAX 804 723 3925 May 1995 HASTINGS COMPACT VACUUM CONTROLLERS VT MODELS ...

Страница 2: ...101B PAGE 2 ...

Страница 3: ... Models 10 3 3 Power Switch 10 3 4 Hastings MultiPosition Switching Capabilities 10 3 4 1 Multiposition Switching Attachment 10 3 4 2 Cabinet Models with Switching 10 3 5 Gauge Tube Installation 10 SECTION 4 0 OPERATION OF VACUUM GAUGE 11 SECTION 5 0 CALIBRATION AND TROUBLESHOOTING GUIDE 12 5 1 Check of Tube Accuracy 12 5 2 Calibration Procedure for CVT Models 14 24 16 and 26 12 5 2 1 Calibration ...

Страница 4: ...ube Nomogram 22 8 4 DV 5 DV 18 Gauge Tubes Nomogram 23 8 5 DV 6M DV 6R DV 20 DV 36 Gauge Tubes Nomogram 24 8 6 Sulfur Hexaflouride Nomogram 25 8 7 VT 4B VT 6B Schematic 26 8 8 VT 4S VT 6S Schematic 27 8 9 VT 4 VT 6 Schematic 28 8 10 VT 4A VT 5A VT 6A Schematic 29 8 11 VT 4S2 VT 6S2 Schematic 30 8 12 VT Outline Dimensions 31 8 13 Mounting Dimensions for Units with 503 Meters and VL 2 or VL 5 Switch...

Страница 5: ...nges Tubes are also compensated for temperature and rate of change of temperature 1 2 Operating Principle Operation of the Hastings Vacuum Gauge is based on a patented low voltage AC bridge which heats a noble metal thermopile circuit Figure 1 1 A change in pressure in the tube creates a change in the thermal conductivity of the gas cooling the thermopile which in turn causes a temperature shift o...

Страница 6: ...or any indirect or consequential damages Refer to Section 7 0 for warranty or other services for this product 1 5 Accessories MULTIPOSITION SWITCHING ATTACHMENTS For mounting behind panel adjacent to meter Includes pilot light ON OFF switch selector switch and 8 foot cable NOTE Switching attachments are not for use with VT 5A Models Model VL 2 Two position Model VL 5 Five position KIT 1 Mounting k...

Страница 7: ... GAUGE TUBE 55 19 DV 4D Std Metal purple base 55 19R DV 4R Ruggedized 55 69 DV 34 Stainless Steel 55 227 DV 4D VCR Metal w VCR connector 55 258 DV 4D KF 16 Metal w KF 16 connector 55 266 DV 4D KF 25 Metal w KF 25 connector 67 6 DV 5M Std Metal red base 55 230 DV 5M VCR Metal w VCR connector 55 38 DV 6M Std Metal yellow base 55 139 DV 20 Glass 55 38R DV 6R Ruggedized 55 66 DV 36 Stainless Steel 55 ...

Страница 8: ...ally sealed base w monel housing for weather resistance STAINLESS STEEL For weather proof corrosive and bakeable applications Withstands high overpressurization Plain or threaded connection requires OM 1 MSF adaptor cable VCR CONNECTION VCR female nut connection 9 16 18 UNF female threads w 75 hex Cajon SS 4 VCR 3 and SS 4 VCR 1 ISO KF CONNECTION KF 16 or KF 25 with all stainless steel constructio...

Страница 9: ...VT 4S VT 5AS and VT 6S STOCK MODEL DESCRIPTION 55 5 CF 8 OFV 8 foot extension cable 65 37 CF 12 OFV 12 foot extension cable 55 23 CF 25 OFV 25 foot extension cable 55 47 CF 50 OFV 50 foot extension cable 65 47 CF 100 OFV 100 foot extension cable ...

Страница 10: ...it is utilized an ON OFF single pole switch pilot light and 8 foot cables are included with a 2 or 5 position Model VL 2 or VL 5 selector switch which can monitor 2 or up to 5 stations 3 4 2 Cabinet Models With Switching Cabinet model vacuum gauges can be obtained with built in switching arrangements that operate in the same manner as the multiposition switching attachment Models include the VT 4S...

Страница 11: ...e ON OFF switch to ON Allow several minutes for warm up NOTE VT 4A 5A and 6A Models require 115 VAC EVT 4A 5A and 6A Models require 230 VAC 50 60 cycle single phase supply voltage 2 With the gauge tube unplugged set the mechanical zero to indicate the center dot past ATM for all VT 6 models see Fig 5 1 page9 3 Plug gauge cable onto gauge tube and meter should indicate ATM If a calibration check is...

Страница 12: ...ale for VT 4 models and on the single dot past ATM for VT 6 models 2 Turn on power and allow one hour warm up for best results 3 Install the gauge tube into a vacuum system as described in Section 3 5 and allow the tube to pump down to a hard vacuum pressure 0 1 micron or lower 4 Connect gauge tube cable onto evacuated new tube or for quicker results a compatible Hastings Reference Tube The vacuum...

Страница 13: ...chanical zero and OFFSET ADJUSTMENT per Section 5 2 2 steps 1 and 2 on the previous page 2 Plug in a Hastings Reference Tube for the instrument you have and apply power Allow one hour warm up for best results 3 Adjust the CAL ADJUSTMENT until the meter reads the pressure marked on the reference tube Fig 5 1 ...

Страница 14: ...utgassing 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 from surfaces in a newly evacuated system may flood the enclosure Also if the system is being pumped continuously gauges spaced at different distances from th...

Страница 15: ...mation form on page 13 or a written description of the problem Please contact the factory for a Repair Authorization Number before returning any product for repair 7 2 Non Warranty Policy Any vacuum product returned for non warranty repair must be accompanied with a purchase order authorizing repair up to 1 3 the list cost of a new product and the Service Request information form on page 13 If the...

Страница 16: ...101B PAGE 16 ...

Страница 17: ...emperature 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 harmful materials exposed to the product during its use attach additional page if necessary PRODUCTS EXPOS...

Страница 18: ...101B PAGE 18 ...

Страница 19: ...AWINGS AND DIAGRAMS This section contains the schematics parts lists and overall assembly drawings If replacement components are desired they can be obtained from the factory by referencing the Hastings part number listed ...

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Страница 26: ...101B PAGE 26 VT 4B VT 6B Schematic information from Hastings drawing 30429 rev P ...

Страница 27: ...101B PAGE 27 VT 4S VT 6S Schematic ...

Страница 28: ...VAC operation use V1301A1 13 01 076A for D3 and use 100Ω 1 2W 18 02 365 for R4 For 230 VAC operation use SNR A250K4 13 01 077B for D3 and use 5 6kΩ 2W 18 02 161 for R4 2 All components shown within the dotted line are mounted on PC 150 6W for 115 VAC operation or PC 150 6EW for 230 VAC operation ...

Страница 29: ...101B PAGE 29 VT 4A VT 5A VT 6A Schematic information from Hastings drawing 30472 rev J ...

Страница 30: ...101B PAGE 30 VT 4S2 VT 6S2 Schematic information from Hastings drawing 30506 rev F ...

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