Thermographic paint for high temperature applications

HERP-HT

Special thermographic spray paint with high emissivity and mechanical resistance for high temperature applications up to 1000 °C. The precisely defined dependence of the emissivity on the wavelength, viewing angle of the infrared camera and the temperature of the measured surface enables to achieve very precise results of thermographic measurements.

Price: 24.99 € (without VAT)

Basic properties

  • high emissivity
  • low transmissivity
  • for temperatures up to 1000 °C
  • high mechanical resistance
  • low electrical conductivity

Application

  • short-term and long-term processes in indoor and outdoor environments at temperatures up to 100 °C
  • short-term processes in high temperature environments up to 1000 °C
Colourblack
Volume400 ml
Yield of paint0.3 m2

HERP-HT

Optical properties

We can guarantee all the mentioned properties of thermographic paints only if the instructions for using the paint are followed. Thermographic spray paint for high temperature applications is not primarily intended for cyclic thermal loading.


Emissivity

  • use effective emissivity for non-contact surface temperature measurement using infrared camera
  • comply effective emissivity for correct angle of measurement and correct surface temperature
  • effective emissivity mentioned below is valid for infrared cameras operating in the wavelength range of 7.5 – 13 μm (commonly used infrared cameras)

Directional dependence of effective emissivity for selected temperatures for band 7.5 – 13 µm
(resp. for infrared camera FLIR A615)

Chart by Visualizer
Angle (°)Emissivity (-)
for 100 °C
Emissivity (-)
for 300 °C
Emissivity (-)
for 500 °C
Emissivity (-)
for 700 °C
Emissivity (-)
for 900 °C
Emissivity (-)
for 1000 °C
50.8950.9120.8750.8750.8420.840
100.8950.9120.8750.8750.8420.839
200.8940.9120.8740.8740.8400.838
300.8940.9120.8710.8710.8380.834
400.8890.9050.8660.8660.8320.829
450.8840.9000.8610.8610.8280.824
500.8800.8930.8560.8560.8220.818
600.8600.8740.8370.8370.8040.800
700.8170.8350.7970.7970.7680.764
800.7010.7190.6920.6920.6700.664


Spectral dependence of normal emissivity for selected temperatures

Chart by Visualizer
Wavelength (μm)Emissivity (-)
2.000.920
2.500.920
3.000.937
3.500.931
4.000.922
4.240.903
4.500.921
5.000.923
5.510.926
6.000.940
6.500.938
7.010.944
7.520.948
7.810.960
8.000.945
8.500.959
9.000.864
9.500.887
9.710.861
10.010.880
10.500.904
11.030.916
11.520.925
12.000.929
12.350.937
12.530.923
13.030.884
13.500.906
14.020.924
14.570.929
15.070.928
15.530.929
16.000.933
16.510.935
17.060.933
17.520.932
18.010.923
18.520.913
19.060.907
19.490.907
19.940.913
Wavelength (μm)Emissivity (-)
2.000.936
2.500.936
3.000.935
3.500.941
4.000.939
4.500.944
4.780.979
5.000.966
5.320.978
5.510.943
5.640.928
6.000.937
6.500.912
7.010.953
7.520.965
8.000.966
8.500.973
9.000.957
9.500.946
10.010.957
10.500.964
11.030.968
11.520.968
12.000.968
12.530.968
13.030.970
13.500.971
14.020.969
14.570.966
15.070.964
15.530.959
16.000.950
16.510.944
17.060.945
17.520.951
18.010.956
18.520.956
19.060.949
19.490.941
19.940.930
Wavelength (μm)Emissivity (-)
1.800.923
2.500.901
3.000.905
3.500.918
4.000.917
4.500.931
4.810.981
5.000.972
5.280.981
5.510.956
6.000.934
6.500.900
7.010.949
7.520.965
8.000.967
8.500.971
9.000.959
9.500.954
10.010.961
10.500.966
11.030.969
11.520.971
12.000.972
12.530.972
13.030.973
13.500.973
14.020.970
14.570.969
15.070.969
15.530.965
16.000.960
16.510.954
17.060.953
17.520.955
18.010.957
18.520.955
19.060.949
19.490.940
19.940.930
Wavelength (μm)Emissivity (-)
1.380.777
1.470.895
2.000.733
2.500.727
3.000.814
3.500.846
4.000.844
4.500.897
5.000.985
5.510.948
6.000.864
6.500.896
7.010.939
7.520.968
8.000.972
8.500.973
9.000.973
9.500.975
10.010.977
10.500.980
11.030.984
11.520.985
12.000.985
12.530.985
13.030.984
13.500.982
14.020.982
14.570.979
15.070.976
15.530.973
16.000.970
16.510.967
17.060.963
17.520.960
18.010.955
18.520.944
19.060.927
19.490.913
19.940.900
Wavelength (μm)Emissivity (-)
1.380.837
2.000.812
2.500.809
3.000.861
3.500.887
4.000.894
4.500.93
5.000.98
5.510.932
6.000.852
6.500.905
7.010.931
7.520.956
8.000.964
8.500.968
9.000.967
9.500.97
10.010.973
10.500.976
11.030.979
11.520.98
12.000.981
12.530.981
13.030.98
13.500.981
14.020.982
14.570.981
15.070.978
15.530.976
16.000.975
16.510.977
17.060.979
17.520.976
18.010.966
18.520.945
19.060.917
19.490.896
19.940.879
Wavelength (μm)Emissivity (-)
1.380.865
2.000.849
2.320.847
2.500.848
3.000.886
3.500.908
4.000.919
4.500.947
5.000.979
5.510.927
6.000.848
6.500.904
7.010.935
7.520.955
8.000.963
8.500.967
9.000.966
9.500.969
10.010.972
10.500.976
11.030.979
11.520.980
12.000.979
12.530.980
13.030.981
13.500.981
14.020.981
14.570.981
15.070.981
15.530.980
16.000.978
16.510.977
17.060.977
17.520.973
18.010.962
18.520.940
19.060.910
19.490.888
19.940.869

Transmissivity

  • band transmissivity up to 1.2 % for the wavelength band 7.5 – 13 μm (commonly used infrared cameras) for room temperature

Spectral dependence of transmissivity

Chart by Visualizer
Wavelength (μm)Transmissivity (%)
1.520.0
1.750.0
2.000.0
2.250.0
2.500.0
2.750.0
3.000.1
3.250.3
3.500.2
3.750.9
4.001.3
4.252.0
4.502.3
4.752.9
5.013.2
5.253.8
5.493.8
5.764.5
6.004.4
6.263.8
6.514.6
6.754.3
7.003.4
7.243.2
7.494.7
7.760.9
8.000.2
8.260.3
8.470.0
8.760.0
9.000.0
9.260.0
9.530.0
9.750.0
10.050.0
10.290.0
10.540.0
10.710.0
10.990.0
11.270.1
11.470.0
11.790.0
12.000.0
12.230.0
12.470.0
12.710.0
12.960.0
13.230.0
13.500.0
13.790.0
13.940.0
14.250.0
14.570.0
14.730.0
15.070.0
15.250.0
15.430.0
15.250.0
16.000.0
16.410.0
16.840.0
17.290.1
17.520.0
18.010.0
18.260.0
18.520.0
18.790.0
19.060.0
19.640.0
19.940.2

Thermal conductivity

  • 0.52 W/mK (100 °C)
  • 0.50 W/mK (300 °C)
  • 0.67 W/mK (500 °C)
  • 2.05 W/mK (700 °C)

Other properties

  • coating thickness 150 μm (according to recommended application)
  • coating roughness Ra = 3.5 μm, Rz = 25 μm

Chemical composition

propane, butane, hydrocarbons, isobutane, C6, isoalkane, ethylbenzene, butane-1-ol, cyklohexane

Instructions for use

  1. Abrade the surface, clean it, dry it and get rid of grease. Cover other areas where spraying is not to be applied.
  2. Shake the container for two minutes and make a test spray.
  3. Spray slowly over the material from a distance of 25-30 cm. Apply four thin layers, wait for a while and apply four thin layers again.
  4. Spray at temperatures 15-25 °C. Paint hardening occurs after two hours.
  5. After use, turn the container upside down and clean the valve by pressing for a few seconds.

Warning

Danger. H222-H229 Extremely flammable aerosol. Pressurised container: May burst if heated. H315 Causes skin irritation. H319 Causes serious eye irritation. H336 May cause drowsiness or dizziness. H411 Toxic to aquatic life with long lasting effects. P101 If medical advice is needed, have product container or label at hand. P102 Keep out of reach of children. P210 Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking. P211 Do not spray on an open flame or other ignition source. P251 Do not pierce or burn, even after use. P260 Do not breathe spray. P410+P412 Protect from sunlight. Do not expose to temperatures exceeding 50 °C / 122 °F. P501 Dispose of contents / container in accordance with regional regulations. EUH211 Warning! Hazardous respirable droplets may be formed when sprayed. Do not breathe spray or mist.

Waste management

Dispose of contents / container in accordance with local / regional / national / international regulations.

It must not be disposed of together with municipal waste. Avoid leakage into drain.