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Protection Heads and Tubes

8 Products
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Industrial protection heads are available in a variety of materials, are compatible with various probe diameters & can use transmitters. Available in single or dual elements.

Product Number Material Process Connection Terminals Protection Tube Entry
NB11-2
$47.86
Available
in 4 weeks
Aluminum
3/8" NPT with compression fitting
Single element
1/2" NPT
NB5-0
$78.97
24  In Stock
Cast Iron
1/2" NPT with compression fitting
Single element
1/2" NPT
NB5-2
$85.31
Available
in 4 weeks
Cast Iron
1/2" NPT with compression fitting
Duplex element
1/2" NPT
NB5-4
$82.66
Available
in 4 weeks
Cast Iron
1/2" NPT with compression fitting
No terminal block
1/2" NPT
NB6-0
$40.93
4  In Stock
Aluminum
1/2" NPT with compression fitting
No terminal block
1/2" NPT
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Self-gripping spring and 1/2" NPT threaded fitting can be added to any 1/4" diameter probe to convert it for thermowell use. Helps achieve optimal thermal contact.

Product Number Material Process Connection Length Inner Diameter
SLF-12-12-14
$41.80
17  In Stock
Stainless Steel
1/2" NPT
2 in
1/4"
1/4-SLK
$36.51
40  In Stock
Stainless Steel
1/2" NPT
1 in
1/4"
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Protection Tubes outside diameters range from 1/16" - 1/2". Can also be secured into pipes using OMEGALOK® compression fittings (Sold Separately).

Product Number Material Maximum Temperature Rating Head Connection Size Process Connection Length Outer Diameter Inner Diameter Sensing End
SS-316-6CLOSED
$15.94
21  In Stock
316 Stainless Steel
900°C (1650°F)
None
None
6 in
0.187 in
0.132 in
Closed
SS-12-6OPEN
$17.42
Available
in 3 weeks
316 Stainless Steel
900°C (1650°F)
None
None
6 in
0.500 in
0.430 in
Open
SS-14-6OPEN
$12.90
13  In Stock
316 Stainless Steel
900°C (1650°F)
None
None
6 in
0.250 in
0.194 in
Open
SS-18-6OPEN
$12.90
3  In Stock
316 Stainless Steel
900°C (1650°F)
None
None
6 in
0.125 in
0.070 in
Open
SS-38-6OPEN
$11.99
Available
in 3 weeks
316 Stainless Steel
900°C (1650°F)
None
None
6 in
0.375 in
0.320 in
Open
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Ceramic Protection Tubes are made from MEGATITE™ 450 and MEGATITE™ 300 which protect the sensor at temperatures as high as 1950°C (3540°F). Optional fittings are available.

Product Number Material Maximum Temperature Rating Head Connection Size Process Connection Length Outer Diameter Inner Diameter Sensing End
PTRA-53214-12
$42.64
Available
in 4 weeks
Alumina( 99.8%)
1700°C (3092°F)
None
None
12 in
0.250 in
0.156 in
Closed
PTRA-341-12
$62.38
Available
in 4 weeks
Alumina( 99.8%)
1700°C (3092°F)
None
None
12 in
1 in
0.750 in
Closed
PTRA-341-18
$95.00
Available
in 4 weeks
Alumina( 99.8%)
1700°C (3092°F)
None
None
18 in
1 in
0.750 in
Closed
PTRA-341-24
$119.39
Available
in 4 weeks
Alumina( 99.8%)
1700°C (3092°F)
None
None
24 in
1 in
0.750 in
Closed
PTRM-341-12
$47.86
Available
in 4 weeks
Mullite
1400°C (2552°F)
None
None
12 in
1 in
0.750 in
Closed
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Sanitary protection heads are available in a variety of materials, are compatible with various probe diameters and can use transmitters. Single or dual elements available.

Product Number Material Process Connection Terminals Protection Tube Entry
NB13-0
$142.16
Available
in 4 weeks
316 Stainless Steel
1/2" NPT
No terminal block
1/2" NPT
NB13-2
$150.04
Available
in 4 weeks
316 Stainless Steel
1/2" NPT
2 terminals (CH-73)
1/2" NPT
NB13-4
$152.14
Available
in 4 weeks
316 Stainless Steel
1/2" NPT
4 terminals (CH-74)
1/2" NPT
NB14-0
$108.93
Available
in 4 weeks
321 Stainless Steel
1/4" NPT
No terminal block
1/4" NPT
NB14-2
$113.92
Available
in 7 days
321 Stainless Steel
1/4" NPT
2 terminals (CH-73/M12)
1/4" NPT
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Protection heads are available in a variety of materials, are compatible with various probe diameters and can use transmitters. Also, configurable w/ single or dual elements.

Product Number Material Process Connection Terminals Protection Tube Entry
NB4
$49.37
Available
in 4 weeks
Aluminum
M16 x 1.5 with compression fitting
Duplex element
M10 x 1 works with 1/8 NPT
NB1-0
$42.85
Available
in 4 weeks
Cast Iron
1/2" NPT
No terminal block
1/2" NPT
NB1-2
$48.36
3  In Stock
Cast Iron
1/2" NPT
Single element
1/2" NPT
NB1-4
$51.15
Available
in 4 weeks
Cast Iron
1/2" NPT
Duplex element
1/2" NPT
NB2-0
$42.85
Available
in 4 weeks
Burnished Die Cast Aluminum
1/2" NPT with compression fitting for 1/8 to 1/4 in OD wire
No terminal block
1/2" NPT
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OMEGATITE 650® Protection Tubes is an alloy of silicon nitride and aluminum oxide and is made to with stand high temperatures up to 1250°C, thermal shock & corrosion .

Product Number Material Maximum Temperature Rating Head Connection Size Process Connection Length Outer Diameter Inner Diameter Sensing End
PTRS-612-450
$572.05
Available
in 8 weeks
Silicon Nitride & Aluminum Oxide
1250°C (2282°F)
None
None
450 mm
12.0 mm
6.0 mm
Closed
PTRS-612-600
$612.93
Available
in 8 weeks
Silicon Nitride & Aluminum Oxide
1250°C (2282°F)
None
None
600 mm
12.0 mm
6.0 mm
Closed
PTRS-916-150
$612.93
Available
in 8 weeks
Silicon Nitride & Aluminum Oxide
1250°C (2282°F)
None
None
150 mm
16.0 mm
9.0 mm
Closed
PTRS-916-300
$619.55
Available
in 8 weeks
Silicon Nitride & Aluminum Oxide
1250°C (2282°F)
None
None
300 mm
16.0 mm
9.0 mm
Closed
PTRS-916-600
$743.67
3  In Stock
Silicon Nitride & Aluminum Oxide
1250°C (2282°F)
None
None
600 mm
16.0 mm
9.0 mm
Closed
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Metal Protection Tubes are use to further protect the sensor within the probe assemblies in mild to extreme environments depending on material type.

Product Number Material Maximum Temperature Rating Head Connection Size Process Connection Length Outer Diameter Inner Diameter Sensing End
1/2-PTBS-12
$120.40
Available
in 6 weeks
Black Steel
650°C (1200°F)
1/2 NPT
None
12 in
0.840 in
0.622 in
Closed
1/2-PTBS-18
$294.71
Available
in 6 weeks
Black Steel
650°C (1200°F)
1/2 NPT
None
18 in
0.840 in
0.622 in
Closed
1/2-PTBS-24
$181.80
Available
in 6 weeks
Black Steel
650°C (1200°F)
1/2 NPT
None
24 in
0.840 in
0.622 in
Closed
1/2-PTSS-12
$169.77
1  In Stock
304 Stainless Steel
900°C (1650°F)
1/2 NPT
None
12 in
0.840 in
0.622 in
Closed
1/2-PTSS-18
$340.55
Available
in 6 weeks
304 Stainless Steel
900°C (1650°F)
1/2 NPT
None
18 in
0.840 in
0.622 in
Closed
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Protection Heads and Tubes

PROTECTION HEADS AND TUBES are vital pieces of equipment in many industrial, commercial, and la...
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