The Vishay SB-10 Switch and Balance Unit features gold-plated push/clamp binding posts to allow fast, convenient and reliable connection of input circuits and individual 10-turn potentiometers with turns-counting dial for fine-balance adjustments.
The channel switch of the SB-10 has an OPEN position to allow the use of additional SB-10’s with a single P-3500 Strain Indicator. The SB-10 also incorporates a common dummy position for use with other than 120, 350 or 1,000 Ohm gauges. The combination of a P-3500 and SB-10 allows the operator to intermix, in a single 10-channel system, quarter-, half- and full-bridge circuits. This feature is not found in most portable strain gauge instrumentation. Quarter and half bridges of the same resistance (e.g., all 120 or all 350 Ohm) can be intermixed in any combination without alteration of either instrument.
If the installation makes use of both 120 and 350 Ohm gauges, it is necessary only to connect to the dummy binding post corresponding to the selected gauge resistance as the channel is changed. Full bridges can also be intermixed in any combination. In this case, the operator needs only to depress the P-3500 BRIDGE push button to FULL position when a full-bridge channel is selected