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Premium PTC Film temperature performance test

Temperature performance test
Test Name : DC300V, 60Hz, 1,000mm*1,700mm, 700W( Korea's famous Bed manufacturer G Company)
The Method of Test : Installing K type sensor on the 9parts and covering the padding on the surface of heating film. Removing the padding and check the temperature
Temperature sensor installation photo
  • Laboratory conditions(Temperature / Humidity) : 21~23℃/52~53%
  • Test regulator New Ostar(Uriel)
  • Test meter(Lutron Co.)
Installation location of Temperature
  • Number 1~9 : thermographer K-type measuring sensor
  • Temperature sensor : thermostat control 5kΩ thermistor
Covering a thin blanket
Without a thin blanket
Temperature change graph with time

After installing the temperature 5kΩ sensor and setting the maximum temperature, the following is the result of covering a thin blanket.

  • Notice : Indicates changes in laboratory temperature conditions
  • The following is the result of measuring the surface temperature of each part while maintaining the film maximum temperature state by removing the temperature sensor controlled by the regulator.
Temperature change by part graph with time
Deviation of temperature average value by part
Elapsed time Average temperature value for each channel(1 hours) MAX MIN RANGE
CH-1 CH-2 CH-3 CH-4 CH-5 CH-6 CH-7 CH-8 CH-9 CH-10
After 1hour 62.2 61.7 61.3 62.4 63.2 57.0 60.8 68.5 63.6 24.9 68.5 57.0 11.5
After 2hour 62.9 62.1 61.9 62.4 63.9 57.7 61.5 69.3 64.1 24.8 69.3 57.7 11.6
After 3hour 63.6 62.3 62.1 62.5 64.1 58.0 61.8 69.8 64.0 24.6 69.8 58.0 11.8
After 4hour 64.1 62.6 62.2 62.7 64.5 58.2 62.2 70.4 64.1 24.5 70.4 58.2 12.2
After 5hour 64.0 62.1 62.2 62.5 64.3 57.9 61.8 70.2 63.8 24.2 70.2 57.9 12.3
After 6hour 63.8 62.0 62.2 62.1 64.2 57.7 61.7 69.9 63.6 24.1 69.9 57.7 12.2
After 7hour 63.5 61.9 62.2 61.6 63.9 57.5 61.5 69.5 63.3 24.0 69.5 57.5 12.0
After 8hour 63.8 62.3 62.7 61.9 64.3 57.8 61.9 69.8 63.7 24.0 69.8 57.8 12.1
9시간 후 63.6 62.1 62.5 61.8 64.1 57.6 61.9 69.6 63.5 23.9 69.6 57.6 12.0
After 10hour 63.9 62.3 62.7 62.0 64.4 57.8 62.4 69.8 63.8 23.9 69.8 57.8 12.1
(Unit : ℃)
  • Notice : Indicates changes in laboratory temperature conditions
Fertility for Each Section Test
Test equipment : Interface Converter(ISK200), S/W ; Signa 6000

    Test Purpose

  • Temperature variation when overheating (left, center and right), (good, fair, and poor)

    Test Condition

  • The film is exposed at room temperature and a heat test is started.
  • Measure the temperature into three sections from source side.
  • After checking every 20-30 minutes for each section, Power down. In the next section, energize start to heat.
    Test Result
  Section 1 Section 2 Section 3
Time(min) 5 10 15 20 5 10 15 20 5 10 15 20
Temperature1 42.63 42.56 42.99 43.12 42.47 42.77 43.14 43.03 42.27 43.17 42.72 42.86
Temperature2 42.13 42.41 42.57 42.75 43.73 43.76 44.25 44.33 42.57 42.68 42.81 42.74
Temperature3 39.95 39.84 39.81 40.13 39.36 39.60 39.76 39.60 40.78 40.93 41.02 41.46
Room temperature 14.37 14.33 14.24 14.12 14.71 14.43 14.80 14.62 15.40 15.40 15.69 15.17
※ Longitudinal temperature variation: (based on number one section temperature 2) differences in number two section 1.58 ℃, number three section 0.28 ℃
Fertility For Each Section
Ordinary Temperature Fertility Test Thermostat(x)
Local Overheating Fertility Test Thermostat(x)
Change rate of PTC Electric Power
Change Rate of PTC Resistance
Premium PTC Heating Film Heat Dispersion Test

Normal heating film has tendency for centralized heating when local overheating occurs.
Heat dispersion test shows central heat shows lesser temperature than the side temperature which can solve local overheating that occurs

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