 |
PTRA
/ PTRM
Ceramic Thermocouple Protection Tubes
To Order (Specify Model No.) Prices Shown in U.S. Dollars
*Length:
The Tube lengths shown are lengths foe a tube without any fittings.
Special lengths are also available. Consult Sales.
Important Ordering Notes
Fittings: When ordering tube with fitting specify the fitting number (1, 2, 3) after the model number.
1. 1/2" x 1/2" NPT: Fits tubes from 1/4" to 1/2" O.D.
2. 1/2" x 3/4" NPT: Fits tubes from 3/8" to 3/4" O.D.
3. 7/8" x 27NS Brass Ferrule 2" long: Fits tubes from 11/16" OD tubes ONLY.
For tube with any of the above fittings add $30 to the price of the tube.
Example: PTRA-31614-12-1 price $57
Ordering Example: PTRA-11618-12, standard tube with no fitting, $27
PTRA-11618-12-1, standard tube, 1/2 x 1/2 NPT fitting, $27 + $30 = $57
OSK/PTRA-11618-15, nonstandard length tube with no fitting; consult Sales for model number and pricing.
 |
Typical
Physical Properties
|
Properties
|
OMEGATITE®450
|
OMEGATITE®300
|
|
Composition
|
99.8%
Al2O3
|
85%
Mullite - 15% Glass
|
|
Water
Absorption
|
0.00
|
0.00
|
|
Specific Gravity KP/CM3
|
3.85
|
2.8
|
|
Gas
Permeability
|
Gas
Tight
|
Gas
Tight
|
|
Compressive
Strength (psi)
|
>30,000
|
>190,000
|
| Tensile Strength (psi) |
30,000
|
18,000
|
|
Transverse
Strength (psi)
|
55,000
|
27,000
|
|
Coefficient
of Linear Thermal Expansion
|
||
|
24 to 250°C (75 to 480°F)
24 to 500°C (75 to 930°F) 24 to 1000°C (75 to 1830°F) 24 to 1500°C (75 to 2730°F) |
6.2
x 10-6
7.4 x 10-6 8.5 x 10-6 9.8 x 10-6 |
3.3
x 10-6
4.0 x 10-6 5.0 x 10-6 - |
|
Approximate
Thermal Conductivity (BTU)(in)(hr)(ft2)(°F)
|
||
|
24°C (75°F)
100°C (1470°F) |
230
60 |
40
25 |
|
Maximum
Service Temperature
|
1950°C
(3540°F)
|
1750° (3180°F)
|
|
Dielectic Constant (1MC)
|
9.29
|
5.80
|
|
Dielectic
Strength (volts/mil)
|
>230
|
250
|
|
Volume
Resistively (ohm cm)
|
1013
|
1013
|
|
Te
Value (Volume Resistively of 1 mega 1/2 cm)
|
800°C (1470°F)
|
800°C (1470°F)
|
|
Hardness (Mohs Scale)
|
9
|
7.5
|
|
Fabrication Methods
|
Cast
|
Cast
|
Tolerance:
±5%
Typical Chemical Analyses
Typical Chemical Analyses
| - |
Al2O3
|
SiO2
|
MgO
|
Na2O
|
CaO
|
Fel2O3
|
Cr2O3
|
TiO2
|
MnO
|
ZrO2
|
K2O
|
|
OMEGATITE®450
|
99.8
|
.070
|
.050
|
.005
|
.030
|
.025
|
<.003
|
.004
|
.001
|
-
|
<.001
|
|
OMEGATITE®300
|
60.0
|
38.0
|
.2
|
.2
|
.1
|
.5
|
-
|
.5
|
-
|
-
|
.700
|
Ceramic Thermocouple Protection Tubes
To Order (Specify Model No.) Prices Shown in U.S. Dollars
|
Dimensions
|
PTRA
OMEGATITE® 450
|
PTRM
OMEGATITE® 300
|
||||
|
Inside
Dia.
|
Outside
Dia.
|
Tube
Length *
|
Model
Number
|
Price
|
Model
Number
|
Price
|
|
1/16"
|
1/6"
|
12"
|
PTRA-11618-12
|
$27
|
PTRM-11618-12
|
$14
|
|
18"
|
PTRA-11618-18
|
$40
|
PTRM-11618-18
|
$21
|
||
|
24"
|
PTRA-11618-24
|
$54
|
PTRM-11618-24
|
$28
|
||
|
5/64"
|
5/32"
|
12"
|
PTRA-564632-12
|
$27
|
PTRM-564632-12
|
$14
|
|
18"
|
PTRA-564632-18
|
$40
|
PTRM-564632-18
|
$21
|
||
|
24"
|
PTRA-564632-24
|
$54
|
PTRM-564632-24
|
$28
|
||
|
5/32"
|
1/4"
|
12"
|
PTRA-53214-12
|
$27
|
PTRM-53214-12
|
$14
|
|
18"
|
PTRA-53214-18
|
$40
|
PTRM-53214-18
|
$21
|
||
|
24"
|
PTRA-53214-24
|
$54
|
PTRM-53214-24
|
$28
|
||
|
3/16"
|
1/4"
|
12"
|
PTRA-31614-12
|
$27
|
PTRM-31614-12
|
$14
|
|
18"
|
PTRA-31614-18
|
$40
|
PTRM-31614-18
|
$21
|
||
|
24"
|
PTRA-31614-24
|
$54
|
PTRM-31614-24
|
$28
|
||
|
3/16"
|
5/16"
|
12"
|
PTRA-316516-12
|
$27
|
PTRM-316516-12
|
$14
|
|
18"
|
PTRA-316516-18
|
$40
|
PTRM-316516-18
|
$21
|
||
|
24"
|
PTRA-316516-24
|
$54
|
PTRM-316516-24
|
$28
|
||
|
1/4"
|
3/8"
|
12"
|
PTRA-1438-12
|
$27
|
PTRM-1438-12
|
$14
|
|
18"
|
PTRA-1438-18
|
$40
|
PTRM-1438-18
|
$21
|
||
|
24"
|
PTRA-1438-24
|
$54
|
PTRM-1438-24
|
$28
|
||
|
5/16"
|
7/16"
|
12"
|
PTRA-516716-12
|
$32
|
-
|
-
|
|
18"
|
PTRA-516716-18
|
$48
|
-
|
-
|
||
|
24"
|
PTRA-516716-24
|
$64
|
-
|
-
|
||
|
5/16"
|
1/2"
|
12"
|
PTRA-51612-12
|
$27
|
PTRM-51612-12
|
$14
|
|
18"
|
PTRA-51612-18
|
$40
|
PTRM-51612-18
|
$21
|
||
|
24"
|
PTRA-51612-24
|
$54
|
PTRM-51612-24
|
$28
|
||
|
3/8"
|
1/2"
|
12"
|
PTRA-3812-12
|
$29
|
PTRM-3812-12
|
$14
|
|
18"
|
PTRA-3812-18
|
$43
|
PTRM-3812-18
|
$21
|
||
|
24"
|
PTRA-3812-24
|
$57
|
PTRM-3812-24
|
$28
|
||
|
7/16"
|
11/16"
|
12"
|
PTRA-7161116-12
|
$29
|
PTRM-7161116-12
|
$14
|
|
18"
|
PTRA-7161116-18
|
$43
|
PTRM-7161116-18
|
$21
|
||
|
24"
|
PTRA-7161116-24
|
$57
|
PTRM-7161116-24
|
$28
|
||
|
1/2"
|
3/4"
|
12"
|
PTRA-1234-12
|
$28
|
PTRM-1234-12
|
$16
|
|
18"
|
PTRA-1234-18
|
$42
|
PTRM-1234-18
|
$23
|
||
|
24"
|
PTRA-1234-24
|
$56
|
PTRM-1234-24
|
$30
|
||
|
5/8"
|
7/8"
|
12"
|
PTRA-5878-12
|
$40
|
PTRM-5878-12
|
$35
|
|
18"
|
PTRA-5878-18
|
$60
|
PTRM-5878-18
|
$52
|
||
|
24"
|
PTRA-5878-24
|
$80
|
PTRM-5878-24
|
$69
|
||
|
3/4"
|
1"
|
12"
|
PTRA-341-12
|
$40
|
PTRM-341-12
|
$32
|
|
18"
|
PTRA-341-18
|
$60
|
PTRM-341-18
|
$49
|
||
|
24"
|
PTRA-341-24
|
$80
|
PTRM-1341-24
|
$65
|
||
|
7/8"
|
1 1/16"
|
12"
|
PTRA-78118-12
|
$50
|
PTRM-78118-12
|
$49
|
|
18"
|
PTRA-78118-18
|
$75
|
PTRM-78118-18
|
$73
|
||
|
24"
|
PTRA-78118-24
|
$100
|
PTRM-78118-24
|
$98
|
||
|
1"
|
1 1/4"
|
12"
|
PTRA-1114-12
|
$50
|
PTRM-1114-12
|
$45
|
|
18"
|
PTRA-1114-18
|
$75
|
PTRM-1114-18
|
$68
|
||
|
24"
|
PTRA-1114-24
|
$100
|
PTRM-1114-24
|
$91
|
||
|
5 mm
|
7 mm
|
12"
|
PTRA-5MM7MM-12
|
$29
|
-
|
-
|
|
18"
|
PTRA-5MM7MM-18
|
$43
|
-
|
-
|
||
|
24"
|
PTRA-5MM7MM-24
|
$58
|
-
|
-
|
||
Important Ordering Notes
Fittings: When ordering tube with fitting specify the fitting number (1, 2, 3) after the model number.
1. 1/2" x 1/2" NPT: Fits tubes from 1/4" to 1/2" O.D.
2. 1/2" x 3/4" NPT: Fits tubes from 3/8" to 3/4" O.D.
3. 7/8" x 27NS Brass Ferrule 2" long: Fits tubes from 11/16" OD tubes ONLY.
For tube with any of the above fittings add $30 to the price of the tube.
Example: PTRA-31614-12-1 price $57
Ordering Example: PTRA-11618-12, standard tube with no fitting, $27
PTRA-11618-12-1, standard tube, 1/2 x 1/2 NPT fitting, $27 + $30 = $57
OSK/PTRA-11618-15, nonstandard length tube with no fitting; consult Sales for model number and pricing.
Copyright 2003,
NEWPORT Electronics, Inc. All rights reserved.