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Thin-Film
Heat Flux Sensors
Ideal for Precise Heat Transfer Measurement
HFS
Each
HFS series Heat Flux Sensor functions as a self-generating thermopile
transducer. It requires no special wiring, reference junctions or
signal conditioning. A readout is accomplished by connecting a sensor
to any direct reading dc microvoltmeter or recorder.
The HFS series sensor is designed for precise measurement of heat loss or gain on any surface. It can be mounted on flat or curved surfaces, and employs butt-bonded junctions with a very low thermal profile for efficient reading. The sensor is available with an integral thermocouple for discrete temperature measurement needed to describe the heat flux, and is available in two different sensitivity ranges. All models utilize a multi-junction thermopile construction. The carrier is a polyimide film which is bonded using a PFA lamination process.
Heat
Low Measurement Installation and How it Works
Ideal for Precise Heat Transfer Measurement
HFS
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Each
HFS series Heat Flux Sensor functions as a self-generating thermopile
transducer. It requires no special wiring, reference junctions or
signal conditioning. A readout is accomplished by connecting a sensor
to any direct reading dc microvoltmeter or recorder.The HFS series sensor is designed for precise measurement of heat loss or gain on any surface. It can be mounted on flat or curved surfaces, and employs butt-bonded junctions with a very low thermal profile for efficient reading. The sensor is available with an integral thermocouple for discrete temperature measurement needed to describe the heat flux, and is available in two different sensitivity ranges. All models utilize a multi-junction thermopile construction. The carrier is a polyimide film which is bonded using a PFA lamination process.
| Specifications Upper Temperature Limit: 150°C (300°F) Number of Junctions: HFS-3: 54 HFS-4: 112 Carrier: Polyimide Film (DuPont Kapton) Sensor Resistance: HFS-3: 140 ohms HFS-4: 175 ohms Lead Wires: #30 AWG Solid Copper, PFA Insulated color coded, 3.1 m (10' long) Weight: Models HFS-3 and HFS-4, 1.0 oz |
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To
Order (Specify
Model No.) Prices Shown in U.S. Dollars
|
Model
No.
|
Nominal † Sensitivity
(µ V/Btu/Ft2-Hr) |
*Max
Rec'd Heat Flux (Btu/Ft2Hr)
|
Built-in
T/C
Type K |
Resp.
Time (sec)
|
Thermal
Capacitance
(Btu per Ft2-°F) |
Thermal
Resistance (°F per Btu/Ft2-Hr)
|
Nominal
Thickness
mm (inches) |
|
HFS-3
|
3.0
|
30,000
|
YES
|
0.60
|
0.02
|
0.01
|
.18
(0.007)
|
|
HFS-4
|
6.5
|
20,000
|
YES
|
0.60
|
0.02
|
0.02
|
.18
(0.007)
|
*Exceeding
the maximum recommended heat flux can result in a large enough temperature
rise to cause delamination of the Kapton bonding material. The given
maximum values assume a 38°C (100°F) ambient
† Nominal sensitivity is ±10%. Sensitivity is supplied with unit.
Comes with complete
operator’s manual and sensitivity calibration.
**Other sizes and styles available, consult Applications Engineering.
Ordering Example: HFS-4, thin-film heat flux sensor, $136
† Nominal sensitivity is ±10%. Sensitivity is supplied with unit.
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Model
No.
|
Description
|
Price
|
|
HFS-3
|
3.0
µV/BTU/Ft2Hr sensor with
type K t/c
|
$130
|
|
HFS-4
|
6.5
µV/BTU/Ft2Hr sensor with
type K t/c
|
$136
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**Other sizes and styles available, consult Applications Engineering.
Ordering Example: HFS-4, thin-film heat flux sensor, $136
Copyright 2003,
NEWPORT Electronics, Inc. All rights reserved.