Strain Gage Interface Card handles 4- and 6-wire circuits.
Press Release Summary:

Original Press Release:
New 8-Channel Strain Gage Interface Card for 1/4, 1/2 and Full Bridges
Marlborough, MA - June 7, 2002 - HBM, Inc., a leading global supplier of test and measurement technology, data acquisition systems and software, announces a new addition to its standard-setting line of multi-channel strain gage measurement products. The new AP815 Interface Card is designed for single strain gages to allow the connection of quarter bridges in a four-wire circuit, and half and full bridges in six-wire circuits. This flexibility allows customers to stock just one type of general purpose card to handle a wide range of applications, eliminating the need for a mixture of cards.
With the AP815, there is no scanning or multiplexing. Five excitation voltages are available, providing a measuring range of 8 to 80 mV/V (8,000 to 160,000: m/m), and a 0 volt listening mode to assess line noise. The AP815 provides an internal shunt resistor per channel that is switchable upon user demand. At 350 *, this configuration returns a detuning signal of 1.0078 mV/V (or 2015.6 um/m at k = 2) at an accuracy of < 0.2%, ensuring the highest possible measurement point accuracy.
With half bridges, the AP815 allows the active strain gage and a compensation strain gage to be arranged separately, and corrects the voltage loss at the connecting line. Full bridges are connected in HBM's standard 6-wire circuit. Transducer connection is made easy via two 25-pin sub-D connectors. 24-wire cable distribution boards are available to facilitate connection to screw terminals or RJ45 connectors.
About HBM
HBM, with U.S. headquarters located in Marlborough, Mass., is a leading global supplier of measurement technologies, products and solutions for industrial test and measurement applications. HBM provides complete measurement solutions - from sensor to software - for industrial and laboratory applications. Its wide range of measurement parameters includes force, torque, weight, strain, displacement and pressure. Primary markets include aerospace, automotive and manufacturing.
HBM is a wholly owned subsidiary of Spectris plc.
Contacts:
Media Contact:
Garner Communications
Jon Garner
949-646-0370
jon@garnerads.com
HBM Contact:
HBM, Inc.
Robert N. Davis
800-578-4260 x-423
robert.davis@hbm.com
HBM, Inc., 19 Bartlett Street, Marlborough, MA 01752 Tel. 800-578-4260, 508-624-4500 Fax 508-485-7907 www.hbm.com