Related Manuals for Hukseflux HF01
Summary of Contents for Hukseflux HF01
- Page 1 USER MANUAL HF01 High temperature heat flux sensor Copyright by Hukseflux | manual v1622 | www.hukseflux.com | info@hukseflux.com...
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Page 2: Warning Statements
Do not use “open circuit detection” when measuring the sensor output. In aluminium production, use the optional silicone sleeve. Only for supply with the optional CE type examination (ATEX) certificate: ask the supplier for ATEX rated operating conditions. HF01 manual v1622 2/27... -
Page 3: Table Of Contents
Ordering and checking at delivery Ordering HF01 Included items Quick instrument check Instrument principle and theory Specifications of HF01 Dimensions of HF01 Standards and recommended practices for use Heat flux measurement in industry Installation of HF01 Site selection and installation in industry... -
Page 4: List Of Symbols
Temperature dependence Resistance Ω Subscripts property of thermopile sensor sensor calibration reference condition reference property of the object on which HF01 is mounted object property at the (object) surface surface property of the surrounding environment environment HF01 manual v1622 4/27... -
Page 5: Introduction
To avoid leakage of current, a risk in aluminium reduction cells, a silicone sleeve is placed over the metal armour. The low-temperature extension cable has wire insulation and a jacket of PTFE type plastic. One face of HF01 is painted black, the other is blank metal. - Page 6 In the user wants to perform accurate absolute measurements with HF01, as opposed to relative measurements, he must make his own uncertainty evaluation and correction for systematic errors.
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Page 7: Ordering And Checking At Delivery
Ordering and checking at delivery 1.1 Ordering HF01 The standard configuration of HF01 is with 0.9 m high temperature cable and 3.5 m low temperature extension cable. Common options are: longer cable (specify total cable length for both cable types in m) ... - Page 8 3. Inspect the instrument for any damage. 4. Check the sensor serial number engraved on the transition piece between high temperature cable and low temperature extension cable, against the certificate provided with the sensor. HF01 manual v1622 8/27...
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Page 9: Instrument Principle And Theory
Using HF01 is easy. For readout the user only needs an accurate voltmeter that works in the millivolt range. To convert the measured voltage, U, to a heat flux Φ, the voltage must be divided by the sensitivity S, a constant that is supplied with each individual sensor, and correct for the temperature of the sensor. - Page 10 Heat flux sensors such as HF01, for use in industry at high heat flux levels, are typically calibrated under the following reference conditions: conductive heat flux (as opposed to radiative or convective heat flux) homogeneous heat flux across the sensor and guard surface ...
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Page 11: Specifications Of Hf01
Specifications of HF01 HF01 measures the heat flux density through the surface of the sensor. This quantity, expressed in W/m , is called heat flux. It also measures the absolute temperature of the surface on which it is mounted. HF01 is passive, using thermopile and thermocouple sensors. - Page 12 Table 3.1 Specifications of HF01 (started on previous page, continued on the next page) Standard cable lengths High temperature cable 0.9 m (see options) Low temperature extension cable 3.5 m (see options) Heat flux sensor resistance range 10 to 30 Ω (standard cable length) Low temperature extension cable: heat 0.2 Ω/m (nominal)
- Page 13 Table 3.1 Specifications of HF01 (started on previous 2 pages) CALIBRATION Calibration traceability to SI units Product certificate included (showing calibration result and traceability) Calibration method method HFC, according to ASTM C1130 Calibration hierarchy from SI through international standards and through...
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Page 14: Dimensions Of Hf01
3.2 Dimensions of HF01 HF01 SN xxxx ø 25 Figure 3.2.1 HF01 heat flux sensor with optional frame with magnets. Dimensions in x 10 HF01 manual v1622 14/27... -
Page 15: Standards And Recommended Practices For Use
Use of HF01 is not subject to standardised operating procedures. 4.1 Heat flux measurement in industry Many HF01 sensors measure on industrial walls and metal surfaces, estimating the installation’s energy balance. Typically the total measuring system consists of multiple heat flux- and temperature sensors. In many cases heat flux sensors are used for trend- monitoring. -
Page 16: Installation Of Hf01
For permanent mounting using the metal frame with 2 holes: tack-weld installation or screw M6 thread to the surface on which HF01 is mounted at a hart-to- hart distance of 60 x10 m. Bolts holding the sensor should be used for... - Page 17 Figure 5.1.1 Permanent installation of HF01 with frame. The HF01 sensor (2) has a frame (4) with 2 holes (3). For permanent mounting, using the metal frame with 2 holes, tack-weld or screw M6 thread to the surface on which HF01 is mounted at a hart-to-hart distance of 60 x10 m.
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Page 18: Electrical Connection
A heat flux sensor should be connected to a measurement system, typically a so-called datalogger. HF01 is a passive sensor that does not need any power, neither for the heat flux sensor, nor for the temperature sensor. Cables may act as a source of distortion, by picking up capacitive noise. -
Page 19: Requirements For Data Acquisition / Amplification
HF01 are available. Table 5.3.1 Requirements for data acquisition and amplification equipment for HF01 in the standard configuration Capability to measure small voltage preferably: <... -
Page 20: Maintenance And Trouble Shooting
The preferred way to obtain a reliable measurement is a regular critical review of the measured data, preferably checking against other measurements. Table 6.1.1 Recommended maintenance of HF01. If possible the data analysis is done on a daily basis. -
Page 21: Trouble Shooting
Inspect the connection of the shield (typically connected at the datalogger side). Check the datalogger program in particular if the right sensitivity is entered. HF01’s sensor serial number is engraved on the transition piece between high temperature cable and low temperature extension cable. The sensitivity can be found on the calibration certificate. -
Page 22: Calibration And Checks In The Field
On-site field calibration is possible by comparison to a calibration reference sensor, usually mounted side by side. Hukseflux main recommendations for field calibrations are: 1) to compare to a calibration reference of the same brand and type as the field sensor 2) to connect both to the same electronics, so that electronics errors (also offsets) are eliminated. - Page 23 HF01 manual v1622 23/27...
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Page 24: Appendices
C1044. 7.3 Appendix on cable extension / replacement HF01 is equipped with one cable that consists of a high temperature cable and a low temperature extension cable. Keep the distance between data logger or amplifier and sensor as short as possible. Cables may act as a source of distortion by picking up capacitive noise. -
Page 25: Appendix On Magnet Replacement
Hukseflux HF01 extension cable with 2 connectors matching cable connector and chassis connector (specify cable length in m) use Hukseflux HF01 cable connector at the end of the HF01 low temperature extension cable to a connector of the extension cable with 2... -
Page 26: Eu Declaration Of Conformity
7.6 EU declaration of conformity Hukseflux Thermal Sensors B.V. Delftechpark 31 2628 XJ Delft The Netherlands in accordance with the requirements of the following directive: 2014/30/EC The Electromagnetic Compatibility Directive hereby declare under our sole responsibility that: Product model: HF01... - Page 27 © 2016, Hukseflux Thermal Sensors B.V. www.hukseflux.com Hukseflux Thermal Sensors B.V. reserves the right to change specifications without notice.
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