New safety valve from Chell protects vacuum systems

l/acuum/volume Printed

40fnumber

in Great

3ipages

319 to 332/l

Pergamon

VACUUM Manufacturers Manufacturers Dr.R K Fitch,

0042-207x/90s3.00+.00

990

Brrtain

Press plc

News

and others

and others are invited to submit information for inclusion in this feature. Items should 11 Townsend Drive, Walmley, Sutton Coldfield, West Midlands B76 8GJ, UK

be addressed

:

to

New products and developments New safety systems The new protects

valve

HPS Vacuum a vacuum

mechanical design. admits

system

pump.

protects

safety

and its contents the vacuum

It diminishes burst

the vacuum

contamination

system

pressure. pumps

Since

the Vacuum

backing

pump

pressure

Sentry

operates

with

by the loss of electrical

is required.

The valve

sizes and solenoid mechanical

atmospheric

power,

is available

with

voltages/frequencies

and

pressurised

the ISO-KF

gas

flange

most commonly

found

on

pumps.

Further

information

:

from

Ron Mitchell

venting Chell

it has risen Tudor

The opening pumps

House,

North

for turbomolecular

sized mechanical

pressure

no external

oil

volume

automatic until

failure

the

buffer

easier restarting.

appropriately

of power

by preventing

by a unique

source

Instruments

and venting

has been isolated

This permits

where

MKS

in the event

system

is minimised

is less than the critical

and diffusion

vacuum

valve from

air to the inlet port of the mechanical

to atmospheric burst

Sentry

isolating

The closing After

Chell

is activated

by automatically backup.

from

Instruments

Grammar

Walsham,

Norfolk Telex

used.

A remote

diagnostic

Leak Detectors

service

link integral

engineers

can now fault

any one of the major remotely

parts necessary service

with

Spectron

for the Spectron

3000

find

and trouble

Edwards

centres

or establishing

High

Edwards

shoot

the nature

G

of Console

Vacuum.

Using

specialist

a Spectron

in the UK, either

the repair

Chell 406177

3000

range

by Edwards

the leak detector,

to complete

engineer

Edwards,

remote

has been introduced

a modem

the fault

shoots

9JH

40248E

97198

Fax 0692

Modem link trouble leak detectors

Roac

NR28

Tel 0692

are

Ltc

School

3000

from

rectifying

of the problem

and the

prior to the despatch

of a

to site.

which

was the first company

control

of Helium

Mass Spectrometer

modem

at installation

console

models.

and commissioning

In addition,

users of existing

to offer

Spectron

a retrofit 3000s

microprocessor

Leak Detectors,

is supplying

the

of all new Spectron

package

is available

to take advantage

to enable

of the new

service. Using

the new facility, specialist

connect

him to the service

interrogate system

valve.

The Edwards

operating

obtaining

parameters

on the nature

of the fault

service

engineer

can then

either

conditions

is necessary

and establish

facility

diagnostic

centres

service

is currently

in the UK at Crawley

in North

America

at the company’s

on pump advise

link or decide

that a site visit

to complete

available

and Manchester.

service

centres

on

parameters

from

the repair. Edwards’

It is already

and plans are in hand to introduce

overseas

to

pressures.

he can then

the parts required

an

number

information

and control

over the modem

from

‘hotline’

to optimum

operating safety

centre.

immediate a special

to be made by the user, reset the operating

service sentry

by dialling

adjustments

The remote

HPS vacuum

engineer

the user’s leak detector,

status,

Depending

New

a user can obtain

Edwards

in Marburg

the and Milan 31!