Richards Thermocouple Cat17 Brn

Manufacturing, Engineering and Sales Since 1938 Phone: 617.527.4385 Fax: 617.964.3746 Email: sales@asrichards.com

ACH

Thermocouple Heads - Aluminum

The NEMA enclosure performance ratings for each of our heads are listed to help you select the proper head for your application. The most common NEMA Ratings for thermocouple connection heads in our catalog are the NEMA Type 2, 4, and Type 4X. Their definitions from the National Electrical Manufacturers Association Classification detailed in NEMA 250-1997 are shown below. √ NEMA 2: For indoor use to provide personnel protection against incidental contact with the enclosed equipment and provide protection against from falling dirt, dripping or light splashing water. √ NEMA 4: For indoor or outdoor use to provide protection from falling dirt, rain, sleet, snow, windblown dust, splashing water, hose directed water, and will be undamaged by the formation of ice on the external surface of the head. √ NEMA 4X: For indoor or outdoor use to provide protection from falling dirt, rain, sleet, snow, windblown dust, splashing water, hose directed water, corrosion , and will be undamaged by the formation of ice on the external surface of the head.

AMH - Miniature Head - Aluminum - Screw Cap & Chain

Part

Process Conduit

Block

Elements/

Dimensions/

Number

Thread Thread Included

Wires

NEMA Rating

Figure

Height 2 3/4” or 69.9 mm Width 2 7/8” or 73.0 mm Diameter 2 1/4” or 57.1 mm

3

NPT 1/2”

NPT 3/4”

AMHS08

AMTS

Single / 2

AMHD08

AMTD

1/2”

3/4”

Double / 4

AMH

NEMA Rating None

ASLH - Aluminum Domed Flip-Top Head Part Process Conduit Block Elements/

4

Dimensions/

Number

Thread

Thread Included

Wires

NEMA Rating

Height 2 3/4” or 69.9 mm

Width 2 15/16” or 74.6 mm

NPT 1/2” 1/2” 1/2”

NPT 1/2” 1/2” 1/2”

ASLHS02 ASLHD08 ASLHTT12

ASLS ASLS ASLS

Two / 2 Four / 4 Six / 6

Cap Diameter 3 1/16” or 77.8 mm

NEMA Rating - Type 2

ASLH

AWH - Aluminum Weatherproof Head - Screw Cover & Chain

Part

Process

Conduit

Block

Elements/

Dimensions/

Number

Thread

Thread Included

Wires

NEMA Rating

Figure

NPT 1/8” 1/2” 3/4” 1” 1/8” 1/2” 3/4” 1” 1/8” 1/2” 3/4” 1” 1/8” 1/2” 3/4”

NPT 3/4” 3/4” 3/4” 3/4” 3/4” 3/4” 3/4” 3/4” 3/4” 3/4” 3/4” 3/4” 3/4” 3/4” 3/4”

5

AWHS02 AWHS08 AWHS12 AWHS16 AWHD02 AWHD08 AWHD12 AWHD16 AWHT02 AWHT08 AWHT12 AWHT16 AWHTR02 AWHTR08 AWHTR12

AWTS AWTS AWTS AWTS AWTD AWTD AWTD AWTD AWTT AWTT AWTT AWTT AWTR AWTR AWTR

Single / 2 Single / 2 Single / 2 Single / 2 Double / 4 Double / 4 Double / 4 Double / 4 Triple / 6 Triple / 6 Triple / 6 Triple / 6

Height 3 3/16” or 81.0 mm Width 2 15/16” or 74.6 mm

Cap Diameter 3 1/16” or 77.8 mm NEMA Rating - Type 4

RTD / 6 RTD / 6 RTD / 6

AWH

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