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| Description |
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Silicone Adhesives
(- 16 series)
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Acrylic Adhesives
(-28 series)
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| Operating Temperature Range |
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-100 to + 250 C |
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-100 to +180 C |
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| Outgassing… TML/VCM |
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1.047% / .322% |
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.264% / .000% |
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| Adhesion to etched aluminum – oz/inch width |
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28@ +125 C
450@ - 100 C |
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29@ +125C
50@ - 100 C |
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| Overall Thickness Applied |
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.025” |
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.028” |
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| Dielectric Strength* |
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600 vdc |
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600 vdc |
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| *In applications exposed to weather, water, mechanical abuse, or solvents, tapes will require additional protection. A grounding circuit should be installed between the aluminum top surface of the heating tape and the grounded metal heat sink to which it is applied. |
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| 1. Determine the length (L) of the heating tape needed to give even distribution of the total wattage (Tp) over the surface of the object to be heated. |
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2. Determine the amount of power necessary for your application.
The total wattage (Tp) required to maintain the object to be heated at the desired temperature can be calculated as follows (based on temperature maintenance only. Does not provide for rapid warm-up or heat losses/gains due to fluids in tube):
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Flat Surface Heating
Tp = P x A x ΔT
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Tube & Pipe Heating
Tp = P x Ltube x ΔT |
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Where:
P = Watts required to maintain temperature per square foot per degree F temperature rise (see table below)
A = Heated Area, square feet.
ΔT = Temperature rise, ·F above ambient
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Where:
P = Watts required per lineal foot of tube per degree F temperature rise (see table below)
L = Legnth of tube, ft.
ΔT = Temperature rise, ·F above ambient |
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| Insulation Thickness |
bare |
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1/2" |
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1" |
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2" |
| P Watts / sq. ft. / F |
.3 |
.15 |
.10 |
.07 |
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| TUBE DIAMETER |
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1/4" |
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1/2" |
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1" |
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2" |
| INSULATION |
bare |
.10 |
.13 |
.21 |
.4 |
| THICKNESS |
1/2" |
.07 |
.09 |
.13 |
.20 |
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1" |
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.05 |
.08 |
.11 |
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3. Calculate the Ohms / Foot of Tape
E2 / Tp x L where:
E = Your operating voltage.
Tp = Total from item 2.
L = Length of tape from item 1. |
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4. Calculate Watts / Foot of Tape
Tp / L |
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5. See the data table at left.
From the data table select the tape with the approximate ohms/foot as calculated in step "3" and equal or greater maximum watts/foot capacity as calculated in step "4". |
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PLEASE REVIEW THE SPECIFICATIONS AND LENGTH / SELECTION OPTIONS BEFORE MAKING YOUR SELECTION
Specify resitance code letter (A-K), Silicone or Acrylic (16 or 28),
and Number of conductors (1,2,4) i.e., H-16-2, B-28-4.
Quantity discounts on 500 or more feet of a single type |
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| Width |
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1/6" |
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1/4" |
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1/2" |
| Conductors |
1 |
2 |
4 |
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Part Number
(Resistance Code) |
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ohms per ft. |
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Max. watts per ft. (4) |
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ohms per ft.
see notes |
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Max. watts per ft. (4) |
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ohms per ft.
see notes |
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Max watts per ft. (4) |
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(2) |
(1) |
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(3) |
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(2) |
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| A-16 or 28 |
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1.9 |
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25 |
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.9 |
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3.8 |
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40 |
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.5 |
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1.9 |
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7.6 |
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70 |
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| B-16 or 28 |
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3.2 |
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25 |
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1.6 |
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6.4 |
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40 |
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.8 |
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3.2 |
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12.8 |
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70 |
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| C-16 or 28 |
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4.0 |
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23 |
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2.0 |
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8.0 |
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35 |
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1.0 |
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4.0 |
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16.0 |
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62 |
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| D-16 or 28 |
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4.9 |
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20 |
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2.4 |
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9.8 |
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30 |
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1.2 |
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4.9 |
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19.6 |
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52 |
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| E-16 or 28 |
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7.0 |
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25 |
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3.5 |
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14.0 |
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40 |
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1.7 |
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7.0 |
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28.0 |
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70 |
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| F-16 or 28 |
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8.8 |
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23 |
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4.4 |
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17.6 |
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35 |
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2.2 |
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8.8 |
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35.2 |
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62 |
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| G-16 or 28 |
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10.8 |
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20 |
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5.4 |
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21.6 |
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30 |
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2.7 |
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10.8 |
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43.2 |
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52 |
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| H-16 or 28 |
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13.2 |
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20 |
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6.6 |
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26.4 |
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30 |
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3.3 |
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13.2 |
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52.8 |
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52 |
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| J-16 or 28 |
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21.3 |
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13 |
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10.6 |
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42.6 |
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20 |
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5.3 |
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21.3 |
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85.2 |
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32 |
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| K-16 or 28 |
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26.8 |
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10 |
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13.4 |
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53.6 |
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16 |
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6.7 |
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26.8 |
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107.2 |
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25 |
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| Custom resistances from .11 ohms/ft. to 60 ohms/ft. available upon request. |
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| (1.) Ohms/foot with all conductors in parallel connection. |
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| (2.) Ohms/foot with all conductors in series connection. |
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| (3.) Ohms/foot with conductors in parallel/series connection. |
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(4.) Maximum wattage per lineal foot when applied to a metal heat sink at room temperature. Reduce these ratings linearly to zero watts output @ 500 F. Use of CLI Terminals is encouraged to insure thermal grounding of Heating Tape along its entire length (see Terminal Literature.)
Adhesion to heat sink along entire length is important to prevent burnout when tape is used near maximum wattage rating. |
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