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Q-Sweat
Quantitative Sweat Measurement System info sheet (.pdf format)

 

CE CETLQ-Sweat
Quantitative Sweat Measurement System

Provides Precise, Automated Measurement of Sweat Output from Skin for Autonomic Function Testing

Highly Sensitive, Accurate, and Repeatable

Non-invasive and Easy to Use

Q-SweatThe Q-Sweat (Quantitative Sweat Measurement System) quantifies human skin sweat output. This patented device precisely measures sweat rate and volume via a closed chamber that is affixed to the skin and displays the data in real time in an easy-to-read, Windows-based graphical user interface.

Developed by leading researchers, the Q-Sweat device uses room air, is compact, and can be to record sweat output at 4 sites simultaneously. The measurements are highly accurate, repeatable, and easy to perform. The device can be operated by any technician with minimal training.

Q-Sweat is the commercial version of the original laboratory equipment developed by Phillip A. Low, M.D., of Rochester, Minnesota.

Q-Sweat
The Q-Sweat moisture sensor assembly.

Components:

  • Furnished with the WR TestWorks operating software
  • Personal computer (laptop or desktop available)
  • Main unit
  • Hose assemblies, 4 of each of 2 different sizes of collection chambers
  • Moisture sensor parking fixture
  • Air drying cartridge (desiccant pack)

Features:

  • Highly accurate, specific, and repeatable
  • Four-channel system allows simultaneous measuring of multiple sites
  • Integral dry air source
  • No special gasses required; uses room air
  • Self calibrating
  • Convenient to operate
  • Compact and portable
  • RS-232 interface
  • Easy to interface to IBM-compatible personal computers
  • Can be integrated with the WR TestWorks cardiac modules and QST (Quantitative Sensory Testing) modules

WR TestWorks Operating Software:

The Windows-based graphical user interface features multicolor traces, individual channel windows, real-time rate and volume display, multiple event markers, automatic data point selection with manual override capability, a “wizard” that leads the user step by step through operation, and much more.

  • Provides a simple, semi-automated, graphical user interface (a “wizard” leads the user step by step through operation)
  • Editable, multicolor traces
  • Patient/test browser and database
  • Individual channel windows
  • Real-time rate and volume display
  • Multiple event markers
  • Time since last mark
  • Capsule location tagging
  • Automatic data point selection with manual override capability
  • Reports in HTML
  • Data export utility
  • Flexible window scaling and sizing
  • Signal input from other FDA-cleared devices such as the FMS Finometer for continuous beat-to-beat blood pressure and chest expansion to acquire cardiac data
  • Please see the WR TestWorks page for more details

Technical Specifications:

Sweat Output Measurement:

Number of channels: 4
Measurement method: direct vapor pressure calculation
Measurement area (two chambers provided): 0.781 and 5.06 square cm.
Dry air flow rate: 0.0–100.0 cubic cm. per minute
Volume:
    Range: 0.0–550.0 micromoles (0.0–10.0 microliters)
    Accuracy: ± 5 percent
    Repeatability: ± 5 percent
    Sensitivity: 0.55 micromoles (0.01 microliters)
Rate:
    Range: 0.0–200 micromoles (0.0–3.63 microliters) per minute
    Accuracy: ± 5 percent
    Repeatability: ± 5 percent
    Sensitivity: 0.01 micromoles (0.0002 microliters) per minute
Environment:
    Power: 90–240 VAC, 50/60 Hz, 100 watts
    Power consumption: Max. 240VA (2.0 amperes at 120 volts AC)
    Dimensions (W x H x D): 40.64 x 18.42 x 33.02 cm. (16.0 x 7.25 x 13.0 in.)
    Weight: 10.0 kg. (22.0 lbs.)
    Operating temperature: 10–35 degrees C. (50–95 degrees F.)
    Operational humidity: 30–75 percent

Indications for use:

  • The Q-Sweat Quantitative Sweat Measurement System is designed to measure the sweat output of the skin of humans. This device does not make a diagnosis or indicate by itself that any disease state exists; it simply documents sweat output.
  • Do not conduct this test on fragile skin.

Warnings and Cautions:

  • Warnings: None.
  • Cautions:
    • This device is restricted to sale by or on the order of a physician.
    • This device is to be serviced only by WR Medical Electronics Co. If servicing is done by any party other than WR Medical Electronics Co., the product warranty and/or safety or quality certifications could be invalid. Contact the factory for repair advice before attempting to repair.

Specifications for the Computer:

Any commonly available IBM-compatible desktop or laptop may be used:

  • 1.2 GHz processor (1.5 recommended)
  • 256MB RAM (512 MB recommended)
  • 10 GB hard disk (18 GB recommended)
  • CD-ROM drive (CD-RW recommended)
  • PCMCIA or PCI card slot (2 recommended)
  • Screen resolution 1024x768/64K color
  • If laptop, screen size 12.1-inch (13.3 recommended)
  • If desktop, screen size 17-inch or larger
  • 1 serial communications port
  • 1 parallel communications port
  • 1 USB port
  • Windows XP Pro operating software running as a single-user system
  • Internet Explorer 5.0+
  • Removable storage device (100MB or more total backup space) such as an Iomega 250-MB Zip drive or CD-RW
  • Inkjet printer (laser recommended)

Notes:

Quality and Safety Marks

 
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WR Medical Electronics Co. 123 North Second Street, Stillwater, MN 55082 USA.
Phone 651-430-1200. Fax 651-439-9733. General email: email

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please go to our legal notices page. Last modified 24-Nov-2004