Technical Specifications; Color Probe; Ultra-High Frequency Ultrasound Probe; Tewl X - Cortexa Technology DermaLab Mini Instructions For Use Manual

21 Technical specifications

• IP-class: IP20 (EN60529)
• Environment: Indoor use
• Temperature: 10 to 35 °C
• Relative humidity: 10 to 90 percent relative humidity, non-condensing
• Altitude: 3048 m (10,000 feet) maximum
• Dimensions: 452x106x131 mm
• Power requirement: External 12 V DC power supply (included).
• Integrated probe holder.

21.1 Color probe

• 45°/0° colorimeter with full visible spectrum color sensor (10° standard observer)
• Diffuse reflectance spectroscopy color measurement (Specular Component Excluded)
• Light Source: D65 illuminant (CRI > 98).
• Measurement aperture: 8 mm (50 mm
• Color space: CIE L*a*b*, L*C*h, XYZ
• Pigmentation (melanin): 0.0 – 99.9.
• Erythema (redness, hemoglobin) 0.0 – 99.9.
• Ceramic (white) and polished black glass (gloss) working standards
• Gloss: 60° specular gloss (GU)
∗
•
∆E ≤ 2 (Average measured on 14 CSSII* ceramic color tiles)
ab
• ∗
∆E ≤ 1 (Average measured on 14 CSSII* ceramic color tiles)
00
* The CCSII (https://www.lucideon.com/materials-technologies/colour-standards/products-
available) is a set of standards for checking the consistency of operation and accuracy of
color measuring instruments over long periods.
21.2

Ultra-High Frequency Ultrasound probe

•
Ultrasound scanner using a rotating single element transducer.
•
Bandwidth (MHz): 14-26 Key figure
•
Center frequency: 20 MHz, focused ultrasound.
•
Resolution: 60 µm x 200 µm (axial x lateral).
•
Image depth (max): 3.4 mm. key figure
•
Rotating scan diameter: 11 mm.
•
Gain-range: Adjustable +/- 10dB.

21.3 TEWL X

The trans epidermal water loss (TEWL) probe measures water evaporation from the skin
using 10 temperature and 10 humidity sensors placed centrally in an open chamber. The
TEWL value is calculated in g/m²/h and is an important parameter for assessing skin barrier
function.
•
Range: 0–250 g/m²/h
•
Resolution: 0.1 g/m²/h
•
Sample rate: 14 samples pr second
•
10 sensor pairs organized in 5 layers centrally inside an open measurement chamber
•
Standard uncertainty: 2.5%
•
Stop criteria: standard deviation, time, and linearity of the vapor gradient (slope target)
of moving average filtered data (5 s window).
•
Recommended operating conditions: 18-26°C
•
Certificate shows the deviation of the relative humidity before and after calibration.
CORTEX TECHNOLOGY ApS
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