RdF Corporation
HFS-A // HEAT FLUX SENSORS
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Overview of RdF Temperature Sensor Applications
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OverviewHeat Flux PrimerOrdering Specs   
  Heat Flux Sensor Drawing
Ordering Specifications
Configuration  Part  Number  Nominal 
 Sensitivity 
(mV) 
 (Btu/ft2•hr) 
 Maximum  Flux 
@<100°F  (Btu/ft2•sec) 
~Time 
Constant 
Including  Bond (sec) 
Sensor
Resistance  (W max) 
Maximum 
Operating  Temp. (°F) 
Net flux ~0 
Nominal  Thickness  (inches)  ~Thermal Prop. Ind. Bond
Capacitance  (Btu/ft2•°F)  _  Impedance (°F) 
(Btu/ft2hr) 

27132-3(0.06 x 0.12)1206 component size

27132 
0.1  0.13  15  300  0.0065  0.020  0.007 
27133(0.31 x 0.50) 27133-1 
27133-2 
27133-3 
 1.1 
1.8 
3.5 
50 
25 
10 
0.07 
0.09 
0.13 
160 300  0.0035 
0.0045 
0.0065 
0.013 
0.015 
0.020 
0.004 
0.005 
0.007 
27134(0.31 x 0.50 w/TC) 27134-1 
27134-2 
27134-3 
1.1 
1.8 
3.5 
50 
25 
10 
0.07 
0.09 
0.13 
160 300  0.0035 
0.0045 
0.0065 
0.013 
0.015 
0.020 
0.004 
0.005 
0.007 
27036
(0.25 x 0.70 w/TC)
0.15 x 0.08
HF Sensor
27036-1 
27036-2 
27036-3 
0.1 
0.3 
1.0 
50 
25 
10 
0.05 
0.09 
0.40 
10  500  0.003 
0.005 
0.012 
0.01 
0.02 
0.05 

0.003 
0.005 
0.012 

 

(0.75 x 1.00 w/TC) 20457-1 
20457-2 
20457-3 
1.1 
3.3 
11.0 
50 
25 
10 
0.05 
0.09 
0.40 
100  500  0.003 
0.005 
0.013 
0.01 
0.02 
0.05 
0.003 
0.005 
0.012 
27160
(0.47 x 1.0, 1.8 total)

Arrays: HFS-C
27160-C 
-L-A01 
on HFS-C 
2.6* 0.13  90  300  0.0065  0.02  0.007
(1.12 x 1.38 w/TC)
27170-1 
27170-2 
3.0*
6.5 
0.13  140 
175 
300  0.0065  0.02  0.007 
(1.12 x 1.38 w/TC)

Permanent
black surface
27270-1 
27270-2 
3.0*
6.5 
0.20  140 
175 
300  0.007  0.02  0.007 
See Drawing, above.
Fast respsone cooled, full range standard.
27650– 
cal range
–leads 
0.3  60  0.02  200  200 
(to max flux,  cooled) 
0.0015 
Equivalent 
Sensor 
Not
Applicable 
0.001 
Equivalent 
Sensor 

Note: All leads are Teflon® insulated AWG #30 solid wire except 27132 is 36 AWG
and 27650 is stranded 22 AWG shielded cable.

Type "T" thermocouples are used on the small sizes for R & D accuracy.
Type “K” Thermocouples are used on 27170 and 27270.

*Excellent output Interchangeability for OEM applications

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  products proudly manufactured in the USA   Specialists in Temperature Measurement
 
 
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