Richards Thermocouple and Temperature Sensor Catalog 16

Thermocouple Heads - Explosion Resistant Heads for Hazardous Locations, UL Listed

Thermocouple connection heads are available in UL listed, explosion resistant configurations for uses in hazardous locations. Our more common styles are shown in this catalog. If you are looking for a particular type, which is not shown here, please phone one of our sales engineers since we have other heads in stock. All thermocouple connection heads are sold with connector blocks. If you would like to order connection heads without blocks add WOC after the part number. Example: EXALH08-WOC The hazardous location classifications of the heads are listed below. They are divided into classes, groups and divisions as listed in the National Fire Protection Association (NFPA) Codes and Article 505 in the National Electric Code (NEC). Refer to these documents for specific details.

EXALH - Explosion Resistant Head - Aluminum Body & Cover Part Process Conduit Block Elements Dimensions

Number

Thread Thread Included

Wires

NEMA Rating

Figure

1

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 NFPA Hazardous Area Classification Class I Group C, D Class II Group E, F, G UL Listed

NPT 1/2” 3/4”

NPT 3/4” 3/4”

EXALHS08 EXALHS12

AWTS AWTS

Single / 2 Single / 2

EXALHD08 EXALHD12

AWTD AWTD

Double / 4 Double / 4

1/2” 3/4”

3/4” 3/4”

EXALHT08 EXALHT12

AWTT AWTT

Triple / 6 Triple / 6

1/2” 3/4”

3/4” 3/4”

EXALHTR08 EXALHTR12

AWTR AWTR

RTD / 6 RTD / 6

1/2” 3/4”

3/4” 3/4”

EXALH

EXSSH - Explosion Resistant Head - 316 Stainless Steel Part Process Conduit Block Elements Dimensions

Number

Thread Thread Included

Wires

NEMA Rating

Figure

Height 3 3/16” or 81.0 mm

2

NPT 1/2” 3/4”

NPT 3/4” 3/4”

EXSSHS08 EXSSHS12

AWTS AWTS

Single / 2 Single / 2

Width 2 15/16” or 74.6 mm

EXSSHD08 EXSSHD12

AWTD AWTD

Double / 4 Double / 4

1/2” 3/4”

3/4” 3/4”

Cap Diameter 3 1/16” or 77.8 mm

EXSSHT08 EXSSHT12

AWTT AWTT

Triple / 6 Triple / 6

1/2” 3/4”

3/4” 3/4”

NFPA Hazardous Area Classification

EXSSHTR08 EXSSHTR12

AWTR AWTR

RTD / 6 RTD / 6

1/2” 3/4”

3/4” 3/4”

Class I Group C, D Class II Group E, F, G UL Listed

EXSSH

Epoxy Coating for Thermocouple Heads

Thermocouple connection heads are available with a white epoxy coating for increased corrosion resistance. This is common in sanitary applications. Any of our metal thermocouple connection heads can be provided with this option. To specify the epoxy coating, add an E to the front of connection head part number. Example #1: EEXALH12 is a white epoxy coated EXALHS12 thermocouple head. Example #2: EEXSSHS12 is a white epoxy coated EXSSHS12 thermocouple head.

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Phone: 617.527.4385 Fax: 617.964.3746 Email: sales@asrichards.com