Market leader in solar radiation & heat flux measurementMarket leader in solar radiation & heat flux measurement
PXI-4070 - NI
Owner's Manual for Heat flux models including: Data Logger Selection Guide
2023-02-25 — Introduction. Hukseflux offers a wide range of sensors for heat flux and temperature measurement. The thermopile heat flux sensor and thermocouple.
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DocumentDocumentHukseflux Thermal Sensors Heat flux data logger selection guide Suitable data loggers and amplifiers to work with Hukseflux heat flux sensors The combined measurement of heat flux and temperature offers you a full picture of the thermal behaviour of a system. Heat flux sensor output is a small millivolt signal. Often heat flux sensors are combined with thermocouples. We have several preferred solutions for amplification, data logging and data visualisation. This brochure shows a summary only, and does not show all sensor models and options. Also not all relevant electronics specifications are shown. Contact Hukseflux for a final check of your proposed solution. Introduction Hukseflux offers a wide range of sensors for heat flux and temperature measurement. The thermopile heat flux sensor and thermocouple temperature sensor are both passive sensors; they do not require power. Such sensors can be connected directly to data loggers and amplifiers. The heat flux in W/m2 is calculated by dividing the heat flux sensor's output, a small voltage, by its sensitivity. The sensitivity is provided with the sensor on its certificate and can be programmed into the data logger. Figure 1 FHF05-50X50 foil heat flux sensor with thermal spreaders: thin, flexible and versatile. Optimise system design / reduce cost The following text helps you to select the right electronics for your application. Selecting the right electronics - sensor combination helps reducing total system costs. Step 1 Visit the Hukseflux YouTube channel: · quick intro to heat flux (3 min); · online course (40 min); · separating radiation and convection (2 min); · latest heat flux technology (2 min). Step 2 Specify your measurement: · describe the purpose of the experiment; · estimate the heat flux levels in W/m2; · estimate the temperature levels in °C; · select a suitable sensor: most common examples are in Table 1. Figure 2 Hioki LR8450: can handle up to 120 heat flux sensors each with its own temperature measurement and display the measurement results simultaneously on screen. Step 3 Estimate the output range of the heat flux sensor in [x 10-6 V] using Table 1: Microvolt output range = heat flux range in [W/m2] x sensitivity in [x 10-6 V/(W/m2)]. Copyright by Hukseflux. Version 2302. We reserve the right to change specifications without prior notice Page 1/4. For Hukseflux Thermal Sensors go to www.hukseflux.com or e-mail us: info@hukseflux.com Hukseflux Thermal Sensors Step 4 Specify your electronics and sensors: · look up the brand and model of data logger you have or want to use; · estimate the number of heat flux - and temperature channels you need. Step 5 Ask Hukseflux: · send all information and specifications to Hukseflux, and ask for our input / suggestions. Suggested use Heat flux + temperature sensors and loggers are used to analyse the causes of temperature change. Also, they are used to validate mathematical CFD simulations. Figure 5 Campbell CR1000X: 8 differential sensor inputs, heat flux and thermocouples, Micro USB B connection, ethernet, MicroSD data storage expansion. Figure 3 Hioki LR8515 can transmit measurements of 1 sensor and 1 thermocouple via Bluetooth. Heat flux sensors and the Hioki loggers Working with sensors and the logger is convenient. See the application notes for the Hioki LR8432, LR8515 and LR8450. See the user manual for suggested solutions. See also our application note how to install am heat flux sensor. Read more about Hioki data logger LR8450 and FHF05 series in Battery EV Thermal Management. Figure 6 dataTaker: up to 15 sensor inputs, heat flux and thermocouples, USB memory for easy data and program transfers. About Hukseflux Hukseflux is the leading expert in measurement of energy transfer. We design and manufacture sensors and measuring systems that support the energy transition. We are market leaders in solar radiation- and heat flux measurement. Customers are served through the main office in the Netherlands, and locally owned representations in the USA, Brazil, India, China, Southeast Asia and Japan. Interested in our products? E-mail us at: info@hukseflux.com . Figure 4 PR electronics PR6331B programmable transmitter, can be mounted vertically or horizontally on a DIN rail Copyright by Hukseflux. Version 2302. We reserve the right to change specifications without prior notice Page 2/4. For Hukseflux Thermal Sensors go to www.hukseflux.com or e-mail us: info@hukseflux.com Hukseflux Thermal Sensors Table 1 Examples of different Hukseflux heat flux sensors, their application, sensitivity, temperature sensors and rated operating ranges for temperature and heat flux. This table shows a summary only and does not show all sensor models, options and specifications. Contact Hukseflux for a final check of your proposed solution. SENSOR [model] FHF05-10X10 FHF05-15X30 FHF05-50X50 FHF05-15X85 FHF05-85X85 FHF06-25X50 IHF01 IHF02 HFP01 HFP03 SBG01-20 SBG01-100 GG01-250 GG01-1000 APPLICATION [description] high power microchips, flexible high heat flux in ovens, flexible general purpose heat flux, battery thermal management, flexible vrapped around a pipe, flexible low fluxes, insulation performance testing, low accuracy datalogger and amplifiers, flexible heat flux in high temperature environments high temperature / high heat flux, industrial high temperature / low heat flux, industrial very low heat fluxes, buildings, soil extremely low heat fluxes low level fire and flame fire and flame high intensity flame concentrated solar, plasma, rockets, hypersonic wind RATED T RANGE [°C] -40 to +150 -40 to +150 -40 to +150 -40 to +150 -40 to +150 -70 to +250 -30 to 900 -30 to 900 -30 to +70 -30 to +70 water-cooled* water-cooled* water-cooled* water-cooled* THERMOCOUPLE [type] T SENSITIVITY HEAT FLUX [x 106 V/(W/m2)] 1 T 3 T 13 T 7 T 50 T 5 K 0.009 K 0.25 N/A 60 N/A 500 N/A 0.30 N/A 0.15 K 0.024 K 0.008 RATED HF RANGE** [± W/m2] 10 000 10 000 10 000 10 000 10 000 20 000 1 000 000 100 000 2 000 2 000 20 000 100 000 250 000 1 000 000 OPTIONAL RADIATIVE/ CONVECTIVE [y/n] Y (stickers) Y (stickers) Y (stickers) Y (stickers) Y (stickers) Y (coating) Y (coating) Y (coating) Y (stickers) N N N Y (sapphire window) N * For water-cooled sensor the temperature of surrounding gasses are typically in the range up to 1500 °C. ** See the manual for details on the rated heat flux ranges; these may depend on the temperature of the sensor or the heat sink that the sensor is mounted on. Copyright by Hukseflux. Version 2302. Page 3/4. For Hukseflux Thermal Sensors go to www.hukseflux.com or e-mail us: info@hukseflux.com Hukseflux Thermal Sensors Table 2 Examples of different electronics compatible with Hukseflux heat flux sensors. This brochure shows a summary only and does not show all relevant electronics specifications. Contact Hukseflux for a final check of your proposed solution. BRAND MODEL OUTPUT [name] [model name] [signal / protocol] Campbell Scientific CR1000X Ethernet Modbus stored data via USB Keysight Hioki DAQ970A + multiplexer LR8515 Digital to PC, USB, LAN or GPIB Bluetooth to PC Hioki Hioki LR8432 LR8450 LR8450-1 LCD screen, memory card LCD screen, memory card PRElectronics 5331A 4-20 mA transmitter PRElectronics 6331B 2 x (4-20 mA) transmitter dataTaker DT80 Ethernet Modbus National PXI series 4065, USB version Instruments 4070 available Fluke 287 LCD screen, memory card, USB and bluetooth ** * For comparing purpose only. Calculation is a rough approximation order of magnitude. ** accessories required. INPUT [# of channels, type] 8 (HF + T) 14 (HF + T) 2 (1 x HF, 1 x T) 10 (HF + T) 120 (HF + T) 1 (HF or T) 2 (HF or T) 5 (HF or T) 1 (HF or T) 1 (HF) PRICE LEVEL [approximate EUR/unit] 2500 2000 500 1200 VOLTAGE MEASUREMENT ACCURACY* [x 106 V] 0.2 0.1 10 0.1 COMMENTS [comments] Optional outdoor and battery powered use. Specs valid from 40 to + 70 °C. Channel extension with multiplexer Laboratory use, channel extension with multiplexer 2 channel standalone use battery powered Laboratory use, immediate display 2100, main 0.1 unit 200 10 500 10 2000 0.2 1500 10 1000 12 Modular logger, extension possible with various units (version -01 with wireless LAN) 1 channel, programmable, industrial use, also ATEX 2 channel, programmable, industrial use, also ATEX Industrial use, channel extension with multiplexer Eurocard model, LabVIEW compatible Can handle type K thermocouple, not type T from FHF, optional Infra-Red temperature sensor Copyright by Hukseflux. Version 2302. Page 4/4. For Hukseflux Thermal Sensors go to www.hukseflux.com or e-mail us: info@hukseflux.com