Stik-On & Cement-On Thermocouples

Cement-On

BJWE offers three types of low-mass, fast response cement-on thermocouples. Surface temperature is a highly desired but difficult measurement to make. Unlike sensors immersed in fluids under controlled or known conditions, many factors influence a surface measurement such as environmental (surrounding) conditions, conformance with surface being measured, and thermal and electrical paths between sensors and objects being measured. Selection criteria for three types of cement-on probes include: range, accuracy, ruggedness, thickness, and flexibility.

Type 1

Type 1 consists of a 0.0005 foil sensor butt bonded to provide fast response. The foil sensor is encapsulated between two paper thin glass reinforced high temperature polymer laminates. They provide electrical insulation, support for the sensor, and a flat surface for cementing. The laminate carrier will withstand prolonged heating at 600°F to 750° F which is the curing temperature for many types of cements. Type 1 sensor are available in thermocouples types "K", "E", & "T". All Type 1 sensors come with 36" of 30 gages fiberglass insulated lead wires.

Type 2

Type 2 cement on sensor is 0.0005 flat butt welded filament, free from any encapsulation (carrier). Fastened to the sensor are two 6" un-insulated foil leads 0.002 thick. The Type 2 sensor is for very fast surface measurements and high temperature measurements. The sensor is bonded directly to the surface being measured. Electrical insulation may be required. The sensor filament is housed during shipping in a temporary polymide film carrier which can be cut, peeled, or left intact during mounting. Available in type "K", "E", & "T", temperatures to +1500°F.

Type 3

Type 3 cement-on sensor is economically fast response sensor. The Type 3 consist of 30 gage glass insulated thermocouple wire 36" long with one end of the wire beaded (via Bead weld) and encapsulated in a polymide/glass carrier. The Type 3 comes in "J", "K", "T", & "E" thermocouple types and has a useful range of up to 700°F short term and 500°F continuous. The Type 3 is good for most industrial applications. BJWE offers 24 hour delivery on many types of beaded wire thermocouples without any carriers...which can save you time and money.

ORDERING CODE

Example:  CMT-2-K
CMT-(1)2-(2)K

(1)Style                         (2)Thermocouple
  Style                            ANSI         Type
   1                                      K            CHROMEL®/ALUMEL®
   2                                      T             Copper/Constantan
   3                                      E             CHROMEL®/Constantan
                                           J              Iron/Constantan (Type 3 Only)            

Stik-On

The new Stik-On thermocouples with factory applied pressure sensitive adhesive, feature the same low mass and fast response characteristics of the Type 3 cement-on thermocouples listed above. The Stik-On thermocouples feature a silicone cement with an operating temperature range of +100°F to +500°F. The silicone cement is applied to the bottom of the paper thin Kapton carrier. To use simply prepare the surface, remove the protective cover, and stick it on. All standard off-the-shelf Stik-On thermocouples come with 36" of 30 gage (0.010") teflon covered leads. For longer leads consult BJWE.

Specifications
Leads                                      Approximately 3/8" Stripped
Carrier                                      Kapton®
Total Thickness                     0.0047" (excluding thermocouple)
Carrier Thickness                   0.001"
Cement Type                           Silicone
Adhesion                                 20oz/inch
Breaking Strength                   30lbs/inch
Elongation                                80%
Dielectric Strength                  7500 Volts
Volume Resistivity                  10^14ohms-cm
Dielectric Constant                  3.6
Operating Temperature Range    -100°F to +500°F

                           ORDERING CODE
  T/C   Positive Lead  Positive Lead   Negative Lead             Part Number
                Alloy                Color            Alloy/Color
   J         Iron                      White          Constantan/Red              PTJ-A
   K       CHROMEL®       Yellow         ALUMEL®/Red              PTK-A
   T       Copper                  Blue            Constantan/Red               PTT-A
   E       CHROMEL®        Purple         Constantan/Red               PTE-A

Thermocouple Selection Guide | PDF Data Sheet

CHROMEL® and ALUMEL® trademark Hoskins Manufacturing Company.  Teflon™ and  Kapton® trademarks DuPont.

ANY STATEMENT AS TO PRODUCT COMPLIANCE WITH APPLICABLE LAW (INCLUDING WITHOUT LIMITATION, THAT PRODUCTS ARE Pb-FREE OR RoHS COMPLIANT) IS AS PROVIDED BY ITS SUPPLIERS, AND B. J. WOLFE ENTERPRISES DOES NOT WARRANT ITS ACCURACY AND WILL NOT BE LIABLE FOR ANY ERROR WITH REGARD TO SUCH INFORMATION.  CUSTOMER USES THE INFORMATION AT ITS OWN RISK.  PRICES SUBJECT TO CHANGE WITH NOTIFICATION.

If you require additional information contact us:   

(800) 554-1224, (818) 889-8412, Fax (818) 889-8417 or email:  info@bjwe.com

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