Isolated DC Amplifier for One Sensor

Cecomp Electronics, APD 4051, Isolated DC Amplifier for One Sensor, 85-265 VAC, 60-300 VDC PowerFeatures:Factory Set for Your Specified RangeFull 3-Way Input/Output/Power IsolationInternal Excitation Power SupplyDC Voltage or Current OutputRemovable Plugs for Faster InstallationInput and Output LoopTracker® LEDsAdjustable Output TestApplications:Load Cell Weighing Systems and ScalesStrain Gauge Pressure Sensors and TransducersTanks, Scales, Extruder Melt Pressure, Crane LoadsThe APD 4051 accepts a strain gauge, bridge, or load cell input and provides a proportional, isolated DC voltage or current output. It includes filtering and processing to allow effective use of low-level transducers in the noisy environments common in industrial applications.The built-in bridge excitation power supply generates a stable source of excitation voltage to drive a 350 W (or greater) bridge type sensor such as a load cell, pressure transducer, or strain gauge and amplifies and converts the resulting millivolt signal into the factory configured output.The APD 4051 is factory configured to a specific excitation voltage, millivolt input (mV/V rating of the sensor multiplied by the excitation voltage), DC voltage or DC current output, and power. The input can be configured as zero-based (i.e., 0 to 20 mV), bi-polar (i.e., -30 to +30 mV) for push-pull applications, or offset (i.e., 5 to 33 mV) to electronically compensate for deadweight (tare).The output can be configured as zero-based, bi-polar, or offset. In addition to the standard output ranges, the APD 4051 output can be configured meet most non-standard requirements. Contact the factory for assistance.Sink/Source VersatilityFor maximum versatility the APD 4051 milliamp output can be selectively wired for sinking or sourcing. This allows connection to any type of mA input receiving device.LoopTrackerAPI exclusive features include two LoopTracker LEDs (green for input, red for output) that vary in intensity with changes in the process input and output signals. These provide a quick visual picture of your process loop at all times and can greatly aid in saving time during initial startup and/or troubleshooting.Output TestAn API exclusive feature includes the test button to provide a fixed output (independent of the input) when held depressed. The test output level is potentiometer adjustable from 0 to 100% of output span. The output test button greatly aids in saving time during initial startup and/or troubleshooting.