Omega Products CH-49 User Manual

Thermocouple Heads

Dimensions: mm (in)

76

(3)

NB1 Cast Iron

59

)

5

16

⁄

(2

92

(35⁄8)

(3

86

3

⁄8)

)

⁄8

1

54

(2

NB4
Aluminum

(2

67

5

)

⁄8

(1

86

(3.4)

48

7

⁄

MOST POPULAR

MODELS HIGHLIGHTED!

To Order (Specify Model No.)

Material Type Number Each

8

)

Cast Iron NB1 NB1-2 26

Burnished NB2-0 $23
Die-Cast NB2 NB2-2 26
Aluminum NB2-4 28

Aluminum NB3 NB3-2 28

Aluminum NB4 NB4-0 $23

Model Price

NB1-0 $23

NB1-4 28

NB3-0 $25

NB3-4 30

NB4-4 28

⁄16)

1

78

(3

76
(3)

NB2
Burnished Die Cast Aluminum

92

5

(3

)

⁄

8

(3

79

Cast Iron NB5 NB5-2 43

NB5-0 $40

95

(3.8)

NB5-4 45

NB6-0 $23

Aluminum NB6 NB6-2 26

NB6-4 28

NB5 Cast Iron

1

)

⁄

8

Ordering Examples: NB1-0, cast iron head
with no terminal block, $23.

NB6-2, deep base aluminum head with a
2-terminal terminal block (for 1 thermocouple
element), $26.

82

(3.2)

82

(3.2)

NB3 Aluminum

110

(4

5

)

⁄16

NB6
Deep Base

B-9

Threaded Openings

Wt Protection Extension

Terminals (oz) Tube Entry Wire Entry Features

0 = no terminal block 22
2 = single element 23
4 = duplex element 24

1

⁄2 NPT

1

⁄2 NPT

• Rugged construction

• Screw cover with
inside thread

• Moisture and dust resistant

• Ideal for outdoor use

• Standard size

max 14-gage wire

0 = no terminal block 5
2 = single element 6

1

⁄2 NPT

4 = duplex element 61⁄2 Standard

max 14-gage wire

1

⁄2 NPT

with
compression
fitting for 1⁄8 to

1

⁄4" OD wire

• Small and lightweight

• Good corrosion resistance

• Gasketed, weather resistant

• Burnished finish

• Safety chain on cover

• Medium size

Terminal Blocks for
Connection Heads

(Order separately
or included with heads
with -2 or -4 suffixes)

Ceramic Block with
Nickel Plated Brass
Terminals for NB2
Head for Gage 14
Wire Maximum

MOST POPULAR MODELS HIGHLIGHTED!

To Order (Specify Model No.)

Model No. Price Terminals Wt g (oz)
CH-49 $4 2 = single 43 (11⁄2)
CH-50 6 4 = duplex 57 (2)

B

0 = no terminal block 8
2 = single element 91⁄4

1

⁄2 NPT

4 = duplex element 93⁄4

max 14-gage wire

0 = no terminal block 21⁄2
2 = single element 31⁄8 M10 x1
4 = duplex element 31⁄4
max 14-gage wire

works with

1

⁄8 NPT

0 = no terminal block 56
2 = single element 571⁄2 NPT
4 = duplex element 58

max 14-gage wire

0 = no terminal block 83⁄4
2 = single element 93⁄41⁄2 NPT
4 = duplex element 103⁄4

max 14-gage wire

compression

compression

compression

Bakelite
CH-76.

1

⁄2 NPT

M16 x 1.5

with

fitting

1

⁄2 NPT

with

fitting

1

⁄2 NPT

with

fitting

• Hinge top

• Lightweight aluminum

• Standard size

• Metric

• Miniature size

• Good corrosion resistance

• Uses miniature barrier
strip connector (optional)

• Rugged cast iron

• High-temperature painted
finish

• Safety chain on cover

• Standard size

• Deep base

• Lightweight aluminum

• Standard size

Bakelite
CH-78.

Ceramic
Blocks
with Brass
Terminals for
Type NSA,
NSB, NSC, and
NBS Connection
Heads for Max
8-Gage Wire

Model No. Price Terminals Wt g (oz)
CH-47 $6 2 = single 85 (3)

CH-48 8 4 = duplex 128 (41⁄2)

Ceramic Blocks with
Brass Terminals
for Type NBN,
NB3, NBG, NXT,
NB1, and NBB
Connection
Heads for Max
14-Gage Wire

Model No.* Price Terminals Wt g (oz)
CH-73 $3 2 = single 35 (11⁄4)

CH-74 5 4 = duplex 50 (13⁄4)

*For NB1 heads, add suffix “-NB1” to model

number; no additional charge.

Ceramic
CH-83.

All models shown smaller than actual size.

Ceramic
CH-84.

Bakelite
CH-77.

B-10

†

Model

Wt

No. Price Desc Material Term g (oz)
CH-83 $4 For NB4 Ceramic 2 28 (1)

CH-84 4 For NB4 Ceramic 4 28 (1)
CH-76 4 Bakelite 2 77 (2
CH-77 4 Bakelite 3 77 (2
CH-78 4 Bakelite 4 77 (2

†

These are alternatives, not standard with

“-2” or “-4” suffixes on thermocouple heads.

For NBG,
NB5, NB6,
NB, NB9
and NB12

1

⁄2)

1

⁄2)

1

⁄2)

Thermocouple Heads

Dimensions: mm (in)

76

(3)

61.5

(2.4)

MOST POPULAR

MODELS HIGHLIGHTED!

To Order (Specify Model No.)

Model Price

Material Type Number Each

93

(3.7)

86

(3.4)

NB7 Flip Top

70

(2.8)

68

(2.7)

NB10 Miniature Bakelite

66.5
(2.6)

61.5

(2.4)

Aluminum NB7 NB7-2 26

NB7-0 $23

NB7-4 28

NB8-0 $23

Aluminum NB8 NB8-2 26

NB8-4 28

Glass NB9-0 $23
Reinforced NB9 NB9-2 26
Nylon NB9-4 28

NB10-0 $23

Bakelite NB10 NB10-2 26

NB10-4 28

NB11-0 $23

Aluminum NB11 NB11-2 26

NB11-4 28

NB12-0 $23

Aluminum NB12 NB12-2 26

NB12-4 28

NB8 Domed Top

87

(3.4)

NB9 Glass Reinforced Nylon

82

(3.2)

NB11 Miniature Aluminum

87

(3.4)

NB12 Low Profile

B-11

82

(3.2)

Cast NEPA NEPA-0 $85
Aluminum NEPA-2 88
Body and NEPA-4 91
Cap

NEPB NEPB-2 88

NSA NSA-2 53

Cast Iron NSB NSB-2 53

NSC NSC-2 53

Ordering Examples: NB10-0 is a bakelite
head with no terminal block, $23.

NB7-4 is a flip-top aluminum head with a
4-terminal terminal block (for 2 thermocouple
elements), $28.

NEPB-0 $85

NEPB-4 91

NSA-0 $50

NSA-4 55

NSB-0 $50

NSB-4 55

NSC-0 $50

NSC-4 55