Hastings VT-5 Manuale utente

page 1

VT/CVT SERIES

VACUUM GAUGES

and CONTROLLERS

HASTINGS

INSTRUCTION

MANUAL

page 2

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.

evision A (Document Number 146-0497) .................................................................... April 1997

evision B (Document Number 146-0999) ...........................................................September 1999

evision C (Document Number 146-032001) ............................................................. March 2001

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Table of Contents

1.0 GENERAL INFORMATION ............................................................ 5

1.1 Features ...............................................................................................................................5

1.2 Specifications .......................................................................................................................5

1.3 Accessories ...........................................................................................................................5

2.0 INSTALLATION ................................................................................. 7

2.1 Panel Mount Vacuum Gauge and Controller ........................................................................7

2.2 Cabinet Mount Vacuum Gauge ............................................................................................8

2.3 Cabinet Models With Internal Switching ...............................................................................8

2.4 External Cables And Wiring..................................................................................................9

2.5 Vacuum Gauge Tube ..........................................................................................................11

3.0 VACUUM GAUGE OPERATION ................................................. 1 3

3.1 Meter Mechanical Zero......................................................................................................13

3.2 AC Input Power .................................................................................................................13

3.3 Pressure Measurement .......................................................................................................13

3.4 Controller Set Points ..........................................................................................................13

3.5 Operation And Performance Check ....................................................................................13

3.6 Gauge Tube Operating Principle ........................................................................................14

3.7 Calibration .........................................................................................................................14

3.7.1 Calibration Using A Vacuum System ......................................................................14

3.7.2 Calibration Using A Hastings eference Tube.........................................................14

4.0 WARRANTY and REPAIR .............................................................. 1 7

4.1 Warranty epair .................................................................................................................17

4.2 Non-warranty epair .........................................................................................................17

Hastings 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.

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General Information

SECTION 1

This manual contains technical and general information relating to the installation, operation, and

calibration of Hastings Vacuum Gauges, Controllers, and Gauge Tubes.

For best performance, Hastings vacuum gauges should be operated with the appropriate Hastings

gauge tube. Attempting to use a Hastings vacuum gauge with other manufacturers tubes may

result in damage to both the gauge and tube.

1.1 Features

Hastings vacuum gauges and controllers are self-contained instruments that offer extreme versatil-

ity for most vacuum applications. The electronic design assures long life and minimal maintenance.

Compact VT & CVT Models are ready for mounting onto a panel.

Hastings vacuum gauges and controllers utilize Hastings rugged but sensitive gauge tubes which

are designed specifically for each of the three available pressure ranges (consult Hastings Ordering

and Dimension guide).

1.2 Specifications

Pressure range:

VT-4 series, CVT-14/24, ..................................................................... 0-20 Torr or 0-20 mbar

VT-5, CVT-15/25, .........................................................................0-100 mTorr or 0-0.1 mbar

VT-6series, CVT-16/26, .................................................................. 0-1000 mTorr or 0-1 mbar

Input power ........................................................................................... 115 or 230 VAC, 50/60 Hz

Output signal ..................................................................................... 0-1 VDC (analog, non-linear)

Control relays ................................................................................... 5A @ 250 VAC (resistive load)

5A @ 30 VDC (resistive load)

Cables ................................................................................................................. 6 ft (1.8 m) power

8 ft (2.4 m) gauge tube

Weight:

Panel mount meters........................................................................... 1.78 lb (0.81 kg) w/cables

Panel mount controllers ..................................................................... 2.13 lb (0.97 kg) w/cables

Cabinet models.................................................................................... 4.25 lb (2.0 kg) w/cables

1.3 Accessories

Gauge tube extension cables are available in 8, 25, 50, & 100 foot lengths. Other installation

accessories include various drop out traps, quick disconnects and filters. Please consult your factory

representative or the Hastings Ordering and Dimension guide for information

concerning these accessories.

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page 7

2.1 Panel Mount Vacuum Gauge and Controller

efer to figures 2.1 and 2.2 for outline dimensions of Hastings VT and CVT series units, to be

used when considering mounting locations. Use dimensional drawing (figure 2.3) to cut-out and

drill the gauge/controller mounting panel. Install gauge or controller onto panel using hardware

supplied with your unit.

SECTION 2

Installation

figure 2.1; VT series outline dimensions

figure 2.2; CVT series outline dimensions

page 8

2.2 Ca inet Mount Vacuum Gauge

Hastings cabinet models require only installation of a Hastings gauge tube.

2.3 Ca inet Models With Internal Switching

Hastings cabinet model vacuum gauges can be obtained with 2-position or 5-position tube switch-

ing functions that will allow the user to display pressure from one or more selected tubes. No

special installation is necessary, simply connect the power cord and the gauge tube cables.

Note: All of the gauge tube cables on either a 2-position or a 5-position unit must be equal

in length. Mixing cable lengths on a particular unit will produce a calibration error due to

the different resistances of the cables.

figure 2.3; CVT/VT series mounting dimensions (not to scale)

page 9

2.4 External Ca les And Wiring

WA NING: To prevent shock hazard to personnel, always install protective cover before

application of AC power or prior to placing instrument in- service.

VT series units

Connect the AC power cable, gauge tube cable, and analog output (analog output is only available

on units configured from the factory with 0-1 VDC ) as detailed in figure 2-4. The terminal block

protective cover must be removed to access screw terminals.

Terminal Function Description

3 Gauge tube cable HTD T.C. (blk wire)

4 AC power cable 115 VAC (blk wire)

5 Gauge tube cable HTD T.C. (wht wire)

6 Gauge tube cable C MP T.C. (green wire)

7 Analog output negative analog output terminal

8 Analog output positive analog output terminal

9 AC power cable Lo VAC (wht wire)

10 AC power cable 230 VAC (blk wire)

13 C M chassis ground

14 C M AC power ground (green/yellow wire)

WARNING:

When 115 VAC is connected to the

auto transformer, 230 VAC appears

at the 230 VAC terminal. The same

occurs when you attach 230 VAC to

the unit, 115 VAC appears at the 115

VAC terminal.

figure 2.4 ; VT series terminal lock

page 10

CVT series units

Connect the AC power cable, gauge tube cable, control relay and analog output (analog output is

only available on units configured from the factory with 0-1 VDC ) as detailed in figure 2-5. The

terminal block protective cover must be removed to access screw terminals.

TE MINAL FUNCTION DESC IPTION

1 Lo set relay (N.C.) relay contact

2 Lo set relay (N. .) relay contact

3 Gauge tube cable HTD T.C. (blk wire)

4 AC power cable 115 VAC (blk wire)

5 Gauge tube cable HTD T.C. (wht wire)

6 Gauge tube cable C MP T.C. (green wire)

7 Analog output negative analog output terminal

8 Analog output positive analog output terminal

9 AC power cable Lo VAC (wht WIRE)

10 AC power cable 230 VAC (blk WIRE)

11 Spare no connection

12 Lo set relay (C M) relay contact

13 C M chassis ground

14 C M AC power ground (green/yellow wire)

15 Hi set relay (N.C.) relay contact

16 Hi set relay (N. .) relay contact

17 Hi set relay (C M) relay contact

1413

15 16

figure 2.5; CVT series terminal lock

WARNING:

When 115 VAC is connected

to the auto transformer,

230 VAC appears at the 230

VAC terminal. The same

occurs when you attach 230

VAC to the unit, 115 VAC

appears at the 115 VAC

terminal.

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