{"id":6956,"date":"2026-06-12T09:20:00","date_gmt":"2026-06-12T00:20:00","guid":{"rendered":"https:\/\/rdec.co.jp\/update\/?post_type=products_en&p=6956"},"modified":"2026-06-12T09:47:28","modified_gmt":"2026-06-12T00:47:28","slug":"htds-003hs","status":"publish","type":"products_en","link":"https:\/\/rdec.co.jp\/update\/products_en\/6956","title":{"rendered":"HTDS-003HS"},"content":{"rendered":"\n

Thermal Desorption Spectroscopy (TDS) System for Hydrogen<\/p>\n\n\n\n

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Product Information<\/h4>\n\n\n\n
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\u25a0Joint Development with NIMS
Maintains the performance of the conventional HTDS-003 model with significantly improved operability via PC control.
\u25a0High-Sensitivity Quantitative Hydrogen Analysis
Capable of performing temperature-dependent analyses and quantitatively analyzing trace amounts of hydrogen in high-tensile steels, hydrogen storage alloys, and electronic components used in EVs.<\/p>\n\n\n\n

\u25a0Improved Operability
The system enables PC-based operation of evacuation and heating controls through internally-developed software. Hydrogen quantitative calculation software \u201cH2Cal\u201d is provided as a standard feature, as in previous models.
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Features<\/h5>\n\n\n\n
\u25a0Analysis Chamber<\/h6>\n\n\n\n
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Two turbomolecular pumps in tandem reduce the hydrogen background, enabling high-sensitivity real-time hydrogen analysis.<\/p>\n\n\n\n

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\u25a0Sample Heating Chamber<\/h6>\n\n\n\n
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Utilizing an external heating furnace and a quartz core tube, the heating element produces no outgassing. The core tube is directly connected to the analysis chamber, achieving a
hydrogen background (hydrogen partial pressure) of 5.0E-9 Pa or less.
Designed compactly for small samples with uniform heating length up to 100 mm.<\/p>\n\n\n\n

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\u25a0Sample Loading Chamber\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000 \u25a0Desiccator<\/h6>\n\n\n\n
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Samples can be replaced without exposing the analysis chamber or the heating core tube to
the atmosphere. The slidable sample chamber facilitates core tube replacement for maintenance.
Pump-down time for sample transfer is within 15 minutes. Actual samples measuring up to
\u00d820 mm \u00d7 50 mm can be analyzed, excluding powders.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n\n\n\n

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\u25a0Built-in Hydrogen Standard Leak System \u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000<\/h6>\n\n\n\n
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Hydrogen gas is automatically filled, and once each target pressure is reached, step-by-step operations ensure accurate quantitative standards, providing long-term, stable, and reliable measurement results.<\/p>\n<\/div><\/div>\n<\/div><\/div>\n<\/div>\n<\/div>\n\n\n\n

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\u25a0Pumping and Heating Control<\/h6>\n\n\n\n
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Pumping, venting, and heating settings can be easily operated. Standard leak gas introduction for
quantitative standards can also be performed automatically with a single click.<\/p>\n\n\n\n

\u25a0\u201cH2Cal\u201d Hydrogen content calculation software<\/h6>\n\n\n\n
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Our internally-developed hydrogen calculation software enables easy calculation of wt.ppm values.It is also possible to obtain wt.ppm hydrogen content data within a specified temperature range.<\/p>\n<\/div><\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n\n\n\n

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Measurement of Hydrogen Permeation in High-Strength Steel
by Cyclic Corrosion Test<\/h5>\n\n\n
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The sample evaluated in the graph is SCM435 steel (1500 MPa) after a cyclic corrosion test. A small peak on the low-temperature side is the permeated hydrogen due to corrosion reactions. This hydrogen, capable of diffusing at room temperature, is referred to as \u201cdiffusible hydrogen.\u201d Since delayed fracture (hydrogen embrittlement) is caused by trace amounts of diffusible hydrogen at the ppm level, highly sensitive hydrogen concentration measurement is essential.<\/p>\n\n\n\n

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Standard Specifications<\/h5>\n\n\n\n
Ultimate Vacuum<\/td>\u2264 5.0E-8 Pa<\/td><\/tr>
Analysis Chamber
Exhaust Line<\/td>		280 L\/s turbo molecular pump (tandem configuration) + backing pump<\/td><\/tr>
Hydrogen Background<\/td>\u2264 5.0E-9 Pa<\/td><\/tr>
Quantitative Analysis Sensitivity<\/td>0.01 wt.ppm\u3000(based on 5g steel sample)<\/td><\/tr>
Standard Leak<\/td>Filling pressure controlled by absolute pressure transducer
Calibration Flow Rate (atm\u00b7cc\/s) H2 gas Filling Pressure (kPa)
9.24 E-6 atm\u30fbcc\/s\u3000\u3000\u3000\u3000 5.00 kPa
4.61 E-5 atm\u30fbcc\/s\u3000\u3000\u3000\u3000 25.00 kPa
1.42 E-5 atm\u30fbcc\/s 75.00 kPa
1.91 E-4 atm\u30fbcc\/s 100.00 kPa<\/td><\/tr>
Sample Heating Temperature<\/td>Room temperature to 1000\u2103<\/td><\/tr>
Heating Rate<\/td>50\u2103\/hr\uff5e600\u2103\/hr<\/td><\/tr>
Sample Size<\/td>Max. 20 mm \u00d7 50 mm<\/td><\/tr>
Furnace Tube Dimensions<\/td>OD=\u03c638\u339c\u00d7750\u339c<\/td><\/tr>
Preparation Chamber Exhaust Line<\/td>280 L\/s turbo molecular pump + backing pump<\/td><\/tr>
Sample Introduction<\/td>Operated via a magnetic feedthrough under high vacuum<\/td><\/tr>
Hydrogen Qualitative
Software Functions<\/td>		The standard configuration comprises the hydrogen quantitative software \u201cH2Cal\u201d,
a dedicated PC, monitor, and keyboard.
Input of hydrogen quantitative reference values
(sample weight, hydrogen background, and calibration flow rate)
Display of hydrogen evolution rate and hydrogen quantity
Display of hydrogen evolution spectrum (evolution rate vs. temperature graph)
Display of hydrogen evolution spectra and hydrogen integrated quantity within the specified temperature range<\/td><\/tr><\/tbody><\/table>\n\n\n\n

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Dimensional Drawing<\/h5>\n\n\n\n

Click here for enlarged dimensional drawing. <\/a><\/p>\n\n\n\n

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