VIA-110

Video Hardness Measurement System

At right, VIA-110 measurement overlay. Click for larger view.

• Knoop-X measurement is obtained by adjusting two vertical lines to the left and right edges of the indentation.

• Knoop-Y measurement is obtained by adjusting two horizontal lines above and below the indentation.
• Vickers measurement is achieved when two vertical and two horizontal measurement lines are used to measure in both horizontal and vertical directions.
• Brinell measurement is achieved when two vertical and two horizontal measurement lines are used to measure in both horizontal and vertical directions.
• The Knoop, Vickers, or Brinell reading with the load used to obtain calculations is displayed on screen. For Brinell, the ball diameter will also be displayed.
• Approximate Rockwell conversions displayed on screen, if selected.
• A labelling function features date, operator ID, lot number, sample size, load utilized, dwell time, and magnification.
• A statistics table displays the count, mean, standard deviation, range, and high and low hardness values for up to 500 calculations.
• Nonvolatile memory stores and recalls set-up information after the unit is powered down.
• Ten scale factors are available for calibrating multiple objective magnifcations.
• RS-232 output allows users to transmit ASCII data of measurements and statistics to printers or computers. Special RS-232 for output to Mitutoyo SPC products is accommodated, as well.
• Easy adjustment of the gray level or color of measurement lines for optimal contrast with the video image (color markers will be displayed only if an optional VIA-RGB or VIA-Y/C interface is being used with RGB or Y/C cameras and monitors.

The VIA-100 provides the capability to measure an indentation and to determine a Knoop, Vickers or Brinell hardness value. Approximate conversions to Rockwell B or C are automatically determined. The VIA-110, combined with a hardness tester, standard video camera, and monitor becomes a state-of-the-art video hardness system. For maximum accuracy, use a CID or CCD camera. The VIA-110 is compatible with monochrome and color NTSC composite cameras and monitors. With an optional VIA-RGB or VIA-Y/C interface, the VIA-110 is compatible with RGB or Y/C cameras and monitors. The VIA-110C is compatible with CCIR/PAL standards.

The VIA-110 is used in microhardness testing to measure the size of the indentation and to automatically determine the hardness value. Knoop, Vickers, and Brinell hardness values are calculated using the appropriate ASTM formulas. Approximate conversions to Rockwell B and C are established using tables consistent with ASTM E 140 Tables 1 and 2 and ASTM A 370 Tables 3A and 3B, where applicable.

 

Configuration

Video Input	VIA-110 is NTSC model, VIA-110C is PAL model; Composite (BNC X 1);1.0Vp-p, 75ohms
Video Output	Unity gain, loop through; Composite (BNC x 1); 1.0Vp-p, 75ohms
Overlay Contrast Range	Black to White
Resolution	1024 (H) x 482 (V) for for VIA-110; 1024 (H) x 574 (V) for VIA-110C.
Stability	Reticle line placement (H), accurate to one vertical line of video, phased locked to camera for stability
Measurement Data Output	Through RS-232 port (ASCII data)
Ambient Temperature	0° C to 55° C
Power Supply	110/220 VAC, 0.5 AMP (60 Hz)
Dimensions of Base Unit	9.9" (W) x 2.6" (H) x 7.0" (D) 251.5 mm (W) x 66.0 mm (H) x 177.8 mm (D)
Approximate Weight	9 lbs. (4.1 kg)
Warranty	1 year parts and labor