Strain Gauge (Bridge) Input Process Indicator Model DIS878
The DIS878 provides a display, optional isolated DC output voltage or current proportional to the output of a strain gauge bridge, and optional alarm setpoints. The units include filtering and conditioning to reduce susceptibility to transients and noisy operations as well as a well regulated excitation voltage for the strain gauge and a high quality differential preamplifier to condition the low level output from the bridge. The digital display utilizes an auto-zero dual-slope integrating A/D converter for accuracy and stability.
All controls are accessible by removing a gasketed front access panel. The display controls are wide ranging so that they can be calibrated to display engineering units. Decimal point selection is made with a switch, also accessible from the front. A complete set of engineering unit labels is sent with each DIS. Once the display has been adjusted to read the correct engineering units, the alarm setpoints can be adjusted without test equipment and without disturbing the output voltage or current.
Either setpoint may be displayed by use of the SP CAL switch. Each setpoint has a red LED to indicate alarm status. The alarms have adjustable deadbands. Terminations are made to a screw terminal connector on the rear of the case.
Weight and pressure indication, control, monitoring, data acquisition and warning.
The DIS is designed to be mounted from the front of a panel through a standard horizontal 3.62 x 1.77 inches (1/8 DIN) cutout. Two mounting camscrews secure the DIS to the panel.
* Within specified range limits.
** Compliance: The sum of the voltage drops in the output loop cannot exceed 24 V at rated current