APD 1500 Series Bridge/Strain Gauge/Load Cell Alarms

The APD 1500 and APD 1520 accept a strain gauge, bridge, or load cell input and provide a visual alarm indication and alarm relay contact outputs. The input is factory configured to a specific excitation voltage and millivolt input range. The input can be configured as zero-based (i.e., 0 to 20 mV), bipolar (i.e., –30 to +30 mV) for push-pull applications, or offset (i.e., 5 to 33 mV) to electronically compensate for deadweights (tare). The alarm types are factory configured. Front-accessible potentiometers are used to adjust alarm setpoint and deadband.