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 Teflon 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 Teflon 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, Teflon 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.
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 |
**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.