Watlow PT Data sheet

Accessories

Sensor

Opening

Conduit

Connection

4 in. ref.

(102 mm)

3 in. ref.
(76 mm)

Ground Screw

Conduit

Connection

Sensor

Opening

3

1

/2 in. nom. ref.

(89 mm)

3

3

/4 in. ref.

(95 mm)

Connection Heads and Blocks

Explosion Proof Thermocouple
Connection Heads

(Assembly ordering option H)

Approximate Assembled Dimensions:
4 in. H x 2

1

⁄4 in. L x 3 in. W

PT Polypropylene Head
and Connector Blocks

(Assembly ordering option C)

The polypropylene head is the answer to many of the
corrosion problems facing connection heads. The U.V.
stabilized polypropylene head is impervious to practically
all corrosive media and is rated for continuous operation
up to 220°F (105°C). The PT-20 and PT-30 are colored
black and the RT-30-WHT is white.

XP Head Shown with TH-615 Block

Sensor Opening Conduit Connection

Part No. in. in.

XP-11
XP-12

3

⁄4

1

⁄2

3

⁄4

3

⁄4

For hazardous locations. Underwriter’s Laboratories Listed Class 1,
Groups C, D; Class 2, Groups E, F, G; Class 3, all Groups.

All XP explosion-proof heads use a TH-615 (six terminal) block.
Order separately.

Also approved for CSA Class I, Groups C and D; Class II, Groups E
and F; and Class III.

Note: All accessories are subject to minimum purchase quantities.

142

PT Polypropylene Heads

Sensor Conduit

Part No. Opening Connection

Head Only in. in.

PT-20
PT-30

RT-30-WHT

1

⁄2

1

⁄2

1

⁄2

Terminal Blocks for PT Heads

Part No. Description

50500701 Single element block
50500801 Dual element block

1

⁄2

3

⁄4

3

⁄4

WATLOW

®