DHHS, PHS, CDC, NIOSH, ALOSH, 1095 Willowdale Rd., Morgantown, WV 26505-2888

66 -- SURFACE PRESSURE MEASUREMENT SYSTEM SOL 99-120 POC Brenda Goodwin, 304/285-5882; Contracting Officer, Rex S. Wolfe, Jr., 304/285-5883 The National Institute for Occupational Safety and Health (NIOSH) in Morgantown, WV plans to purchase a surface pressure measurement system which will be used to measure the hand grip pressure while a person is operating a power hand tool. In order to make the measurement reliable, repeatable and accurate, any system offered should meet the following specifications and requirements: 1. The system should based on the capacitive-measurement technology. It must be able to measure the absolute values of the static and dynamic pressures; 2. The shear force that would exit between the tool handle and a human hand while a person operates a hand tool should not significantly change the pressure readings; 3. The sampling rate for each sensor must be greater than or equal to 200Hz; 4. A sensor grid integrated in a sensor mat is desired. The thickness of the mat must be less than or equal to 2.5mm. The area of each sensor (widthVlength) must be less than or equal to 7.8V7.8mm2. The sensor grid should have a rectangle shape with a width of 90 to 105 mm and a length of 120 to 125mm. However, the total width of the mat (sensor grip plus conducting wire band) must be less than 125mm. The extension portion of the conducting wire (not include the portion on the mat) that connects the external adapter should be about 200mm; 5. The sensor mat must be flexible and be able to be wrapped on a handle of a hand tool easily. The curvature of the handle with a diameter of 20 to 40mm must not significantly affect the measurement of the pressure; 6. The sensor conducting bus aside the sensor grip may overlap on the sensor grid area when the sensor mat is wrapped on a cylinder handle and gripped by a hand. Such a situation should not affect the pressure readings of the measurement; 7. The pressure measurement range will be 1-400 kPa. The pressure sensor must have a low hysterisis and good linear characteristics in the pressure range of 1-250 kPa; 8. The sensor mat must be durable, and can be used repeatedly. Its performance must not deteriorate rapidly; 9. The system must have a calibration device and the sensors should be able to be calibrated conveniently. The location of each sensor in the sensor grid must be able to be identified easily. 10. The system must be able to be synchronized externally with other measurement system and are also able to supply synchronized pulses; 11. The measured data must be able to be displays as a conform color picture on a monitor and as a printout on a color printer. The data must also be available in ASCII format. The Request for Quote should be issued the week of August 16, 1999. Quotes will be due on or about September 9, 1999. Interested parties with the capabilities to respond may submit written requests for the solicitation package to: Brenda L. Goodwin, Reference: #99-120, 1095 Willowdale Road, Morgantown, WV 26505. All responsible sources may submit an offer which shall be considered by the Government. Posted 07/29/99 (W-SN360534). (0210)

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