Omega Products THERMCOAT User Manual

Thermcoat Cement and Lacquer Kit
OMEGA’s thermcoat kit is used for cementing fine-gage thermocouples in place on metal, plastic and ceramic surfaces and for assembling and installing thermopiles, temperature probes and thermocouple bolometers.
Each THERMCOAT KIT includes:
THERMCOAT CO (zinc phosphate cement)THERMCOAT COL (liquid for zinc phosphate cement)THERMCOAT SL (heat-curing silicone lacquer)CC HIGH TEMP CEMENT
(high temperature cement binder and filler)
Assorted Fine-Gage Ceramic InsulatorsAssorted Fine-Gage TubingBrushes, Corkscrew, and Assorted Sleeving
THERMCOAT CO and THERMCOAT COL
This is a fast-setting 2-part zinc phosphate cement which should be worked at temperatures between 16 and 27°C (60 and 80°F). Work with very small quantities. Once cement has set, it cannot be reworked. Cements mixed too thinly, resulting from an excess of liquid COL, may cause spurious voltaic emfs to be generated in fine-gage thermocouples. Before applying cement, thoroughly clean surface and thermocouples and remove all contamination. Shelf life in excess of 2
1
2 years.
THERMCOAT SL is a heat-curing silicone lacquer used for
insulating thermocouples and lead wires. It is useful from -145 to 230°C (-230 to 450°F).
Specifications
Color: Dark brown Nonvolatile Content: 49.0% after 3-hr @ 135°C (275°F) Specific Gravity: 1.01 @ 25°C (77°F) Viscosity: 110 @ 25°C (77°F), centipoises Flash Point, Open Cup: 32°C (90°F) Solvent: Xylene Drying Time: 2.5 hr @ 200°C (392°F)
After Curing 6 hr @ 200°C (382°F)
Dielectric Strength, 2" Electrodes: 2000 V/mil Dissipation Factor @ 25°C (77°F):
100 Hz: 0.010 100 kHz: 0.007
Dielectric Constant @ 25°C (77°F):
100 Hz: 3.10
100 kHz: 2.98 Surface Resistivity, : 1 x 1014 Volume Resistivity, -cm: 2 x 1014 Weight Loss, Solvent-Free Varnish: 6.4% after 3-hr/250°C
(482°F)
Thermal Conductivity: 0.35 x 10–3 cal/sec (cm)°C Moisture Vapor Transmission: 4.6 g/m Heat Endurance at 250°C (482°F):
Flex Life: 690-hr
Craze Life: 1960-hr Thermal Life, Curved Electrode Method:
Hr @ 300°C (572°F): 350
Hr @ 275°C (527°F): 1500
Hr @ 250°C (482°F): 4000
2
/day
AVAILABLE FOR FAST DELIVERY!
To Order (Specify Model Number)
Model No. Price Description
THERMCOAT $32 Cement and lacquer kit
Replacement Cement and Lacquer
Model No. Vial 1 oz 2 oz 4 oz THERMCOAT CO-(*) $5 $6 $9 $12 THERMCOAT COL-(*) 56912 THERMCOAT SL-(*) 56912
* Indicate size: V, 1, 2, 4 (vial size is 0.5 oz).
OMEGA®CC High Temperature Cement
A porcelain-like cement consisting of 2 parts: a powder filler and a liquid binder. Mix 3 parts filler to 1 part liquid by weight, or 2 parts filler to 1 part liquid by volume. Hardens with an internal chemical setting action with an initial set in approximately 30 minutes and a final complete set in 18 to 24 hours at ordinary temperatures. The set may be decreased to 30 to 60 minutes after application by baking up to 80°C (175°F). The sodium silicate cement will withstand temperatures up to 840°C (1550°F). It adheres to practically all surfaces which are clean and free of oil and grease.
Physical Properties
Color....................................................Tan
Compressive Strength.........................3900 psi
Tensile Strength..................................425 psi
Absorption...........................................10 – 12%
Shrinkage............................................0.50%
Dielectric Strength...ASTM D-149—
Volume Resistivity...ASTM D-1829—
Dielectric Constant..............................5.0 – 7.0
Thermal Conductivity (K Factor)—
Coefficient of Thermal Expansion........4.6 x 10–6in/in/°F
Density................................................141 pcf
Maximum Service Temperature..........840°C (1550°F)
To Order (Specify Model Number)
Model No. Price Description CC HIGH TEMP $18 Cement kit with 2.25 oz powder
CC BINDER 36 8 oz container of liquid binder CC FILLER 36 8 oz container of powder filler
THERMCOAT
Starts at
$
32
Complete Cement
and Lacquer Kit
at 70°F..............25.0 to 51.0 Volts/mil
at 750°F............12.5 to 25.0 Volts/mil
at 1475°F..........up to 1.3 Volts/mil
at 70°F..............10
at 750°F............104– 106Ω-cm
at 1475°F..........102– 103Ω-cm
at 500°F...... 3.41 (BTU-inch)/(sq ft-hr-°F)
filler and 0.75 oz liquid binder
Size and Price
7
– 109Ω-cm
F
F-20
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EPG05
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