Electra DELTA 25 Manual de usuario descargar pdf (Pagina 19)

DP6 Family

17

Alpha-Beta Scintillation Probes

These large, 100

cm

2

, dual phosphor

(ZnS/BC400) scin-

tillation probes are

popular for monitoring

personnel, tools and work

areas for alpha and beta with effi-

cient discrimination. The lightweight, slim,

wedge profile, durable hex grill and field

replaceable windows provide practical advan-

tages: high availability and faster surveys. The

R version is fitted with a more rugged hex grill

which reduces the efficiency figures by a factor

of 0.65.

• PET DP6AD — Al. alloy die-cast housing fit-

ted with a PET connector

• MHV DP6BD — Al. alloy die-cast housing,

MHV connector

• MHV DP6DD - An enhanced design with a

more uniform beta energy response and

slightly lower background response than oth-

ers. The radiation window consists of two

layers of 0.3 mg/cm² polycarbonate and the

grill is supported by an extra frame reinforce-

ment bar.

• MHV DP6CD - Al. alloy die-cast housing,

MHV connector. The signal gain control is

adjusted to simulate GM detectors requiring

+900 volts. This allows user sites to upgrade

their probes without setup penalties and

without needing to replace their ratemeter.

DP6CD versions are customized to user’s pre-

ferred ratemeter. Further details on request.

This probe can be matched with Thermo's

portable survey meters, such as the

Electra/Delta series, ASP-2, E-600, or RM-25.

See also HP-380AB.

• Light weight, slim, wedge profile

• Durable hex grille and field replaceable win-

dows provide high reliability

• DP6R range: fitted with extra-rugged hex grille

• DP6AD, DP6RA uses a PET connector

• DP6BD, DP6RB uses an MHV connector

• IDP6B is the intelligent version used only

with the Selectra

The DP6CD and DP6RC probes feature signal

gain adjustment to permit operation with

ratemeters whose HV supply is fixed at 900 V.

Users can upgrade from a GM probe to these

probes without having to replace their ratemeter,

for example the Surveyor 2000.

The DP6DD is a premium performer with extra-

reinforced window frame, a thinner 0.5 µm

phosphor and thinner coating of ZnS to better

measure lower energy beta emitters.

• Connector: MHV

• Calibration sources

241

Am alpha, code RRS

51

A,

36

Cl beta, code RRS 54A,

90

Sr/

90

Y beta, code

RRS 55A

DP8 Family

The largest dual phosphor probe cur-

rently available. Its 600 cm² window

offers large savings in time when

monitoring areas such as walls, floors

and flat objects. It weighs only 1.5 kg

(3.3 Ib).

This probe can be matched with

Thermo's portable survey meters,

such as the Electra/Delta series,

ASP-2, E-600, or RM-25.

• High sensitivity to distributed con-

tamination

• Durable, light weight, only 1.5 kg

(3.3 lb)

• DP8A uses a PET connector; DP8B

uses an MHV connector

•

241

Am alpha

calibration

source, RRH

11 B

•

36

Cl beta calibra-

tion source, RRH

143.

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