Thermocouple Assemblies
High Temperature Platinum Thermocouples and Ceramic Protection Tubes

RAT / SAT / BAT / XDH
Up to 1650°C (3000°F) Rating
Oxidizing or Reducing Atmospheres
Connection Head With Terminal Block
Custom Probe Lengths Available

Type R, S, or B Platinum Thermocouple enclosed in a high purity alumina protection tube. Standard construction includes a cast iron NB1-2 connection head and 1/2" NPT fitting. For use at temperatures up to 1650°C (3000°F). Elements are insulated by a double bore high purity hard-fired alumina insulator.

To Order
(Specify Model No.) Prices Shown in U.S. Dollars
Model No.
Thermocouple
Calibration
AWG
Wire Size
Protection
Tube OD (in.)
Insulator
OD (in.)
Price
12" Length
Price
Add'l 6 in.
RAT-30-12"
Pt vs Pt 13% Rh
30
1/4
1/8
$133
$37
RAT-24-12"
Pt Vs Pt 13% Rh
24
1/4
1/8
$213
$67
RAT-20-12"
Pt Vs Pt 13% Rh
20
3/8
3/16
$388
$139
SAT-30-12"
Pt Vs Pt 10% Rh
30
1/4
1/8
$133
$37
SAT-24-12"
Pt Vs Pt 10% Rh
24
1/4
1/8
$213
$67
SAT-20-12"
Pt Vs Pt 10% Rh
20
3/8
3/16
$388
$139
BAT-30-12"
Pt 6% Rh Vs Pt 30% Rh
30
1/4
1/8
$133
$37
BAT-24-12"
Pt 6% Rh Vs Pt 30% Rh
24
1/4
1/8
$213
$67
BAT-20-12"
Pt 6% Rh Vs Pt 30% Rh
20
3/8
3/16
$388
$139
Note: Alumina tube shipped separately to avoid breakage. Shipped unassembled.

Wire Size Conversion
AWG
Actual Diameter
 
AWG
Actual Diameter
6
0.162" (4.1 mm)
18
0.040" (1.0 mm)
8
0.128" (3.2 mm)
20
0.032" (0.8 mm)
10
0.102" (2.5 mm)
22
0.0253" (0.6 mm)
12
0.081" (2.0 mm)
24
0.0201" (0.5 mm)
14
0.064" (1.6 mm)
26
0.0159" (0.41 mm)
16
0.051" (1.2 mm)
30
0.0100" (0.25 mm)

Type of
Element
AWG
Wire Size
Insulator
99.7% + AL2O3
Type S
PT-PT/13%Rh
Type R
Pt-PT/13%Rh
Price
12"* Length
Price
Add'l (in.)
Bare wires
(No Insulators)
20
N/A
Bare-20-S-12
Bare-20-R-12
$295
$20
24
N/A
Bare-24-S-12
Bare-24-R-12
$120
$8
30
N/A
Bare-30-S-12
Bare-30-R-12
$40
$3
Double-Hole
Round
Insulators
20
XDH-20
XDH-20-S-12
XDH-20-R-12
$305
$21
24
XDH-24
XDH-24-S-12
XDH-24-R-12
$130
$9
30
XDH-30
XDH-30-S-12
XDH-30-R-12
$50
$4
*Replacement elements include loads of sufficient length to reach terminals in head.

Replacement Protection Tubes
PTRA 31614-12-1-$57 (for 1/4" OD)
PTRA 1438-12-1-$57 (for OD)
Note:
Price is subject to change due to precious metal market fluctuations.

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