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Catalogue Zener Barrier

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65800 Series Single Channel Zener Barriers

Render Switches or Signal conditioners Intrinsically Safe

Limits D.C. voltage and current to the hazardous area and provides a path for fault current

► Intrinsic safety with solid-state reliability.

► Compact size streamlines installation.

► Space-saving in multiples.

► Encapsulated construction is impervious to dust and moisture.

The exceptionally compact, almost "wafer-thin" design of GEMS 65800 Series units saves space and simplifies installation.. .especially in multiples on a common mounting plate. They provide great economy as well since no explosion-proof enclosures are needed for sensor wiring. Encapsulated construction is impervious to dust and moisture. Single-screw mounting is standard, but units can be supplied with an optional clip for rail mounting. The single through-mounting screw also provides electrical connection to ground through the earth-grounded mounting surface.

Any non-voltage-producing sensor or switch is rendered intrinsically safe for hazardous locations when properly connected to the output of these Zener Barriers.

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See table on Page 1-2 for specific approval Information.

Dimensions

ÌED P0LYSULF0NE HOUSING

Typical Wiring Diagram

31/64" ;i2.3mm;

HAZARDOUS AREA

SAFEAREA

r "~

3-3/16" (80.9 mm)

^ _|^{INDUSTRIAL FUSE}_|_

( + )

POWER SUPPLY ANNUNC.

tí

—°T-5

~~T FT

ZENER BARRIER

1-7/16" ;36.5mm)

SENSOR

Positive single-channel Zener Barrier with negative ground.

For most non-voltage-producing devices located in a hazardous area, a single Zener Barrierthat is negative-earth-ground can be used for intrinsic safety. Instrumentation that produces an output (signal conditioners) usually requires two barriers, one for each "floating" lead. In this case, a dual channel barrier can be provided (see 1-10 and 1-11).

Or, for applications where the instrument signal return level cannot be reduced, a supply barrier and a low resistance return barrier can be supplied (shown below).

MOUNTING SCREW

locating™

-H h-—.123 (3,12) dia. max

13' 64 -

(5,ie:

Li-^

1(25,4)1

25_ 64 I

(9,92)

Protective Cover

Protective cover over the output terminal (3) assures intrinsic safety of sensor wiring.

HAZARDOUS AREA

NON-HAZARDOUS AREA

SIGNAL RETURN PARRIER

Optional Rail Mounting

GEMS Single Channel Zener Barriers can be supplied on special order with a clip for rail mounting. Clip attachesto barrierwith standard mounting screw.

For floating leads: 65800 Series supply and return barriers for signal conditioners.

Installation and maintenance must be in accordance with the National Electrical Code and the applicable GEMS INSTRUCTION, INSTALLATION and SERVICE bulletin.

OPTIONAL RAIL

MOUNTING CLIP-P/N 11353C

EARTH-GROUNDED RAIL

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