Absolute Process Instruments APD 4381 D _ DC to DC transmitter, high accuracy. Fully isolated.
Cecomp Electronics, APD 4381 D, DC to DC Isolated Signal Conditioner, High Accuracy, 53 Field Configurable Input Range, 10-32 VAC Power
Features:
- One Model Covers All Common DC Sensors
- Zero and Span Output Calibration Buttons
- Full 1200 V Isolation
- Input LoopTracker® LED
- Output Test Function
- Built-In Loop Power Supply for Sink/Source Output
Applications:
- Convert/Isolate DC Sensors for PLC Input, Control and/or Validation
- Interface DC Sensors with Panel Meters, PLCs, Recorders, Data Acq., DCS, & SCADA Systems
The APD 4381 D accepts a DC input and provides an optically isolated and high accuracy DC voltage or current output. The input and output ranges are field configurable.
The input type is set with switches and its range is configured using front buttons, a multimeter and an input simulator.
The input is sampled and then passed through an optocoupler to the output stage.
Full 3-way isolation (input, output, power) make this module useful for ground loop elimination, common mode signal rejection, and noise pickup reduction.
The low noise 18 bit analog output is isolated and can be set up for common voltage and milliamp output types.
Output Sink/Source Versatility
Standard on the APD 4381 D is a 20 VDC loop excitation supply for the milliamp output. The output can be selectively wired for sinking or sourcing allowing use with a powered or unpowered milliamp device.
LoopTracker
An API exclusive feature includes a green LoopTracker LED that varies in intensity with changes in the process input signal. It provides a quick visual picture of your process input at all times and can greatly aid in saving time during initial startup and troubleshooting.
Output Test
An API exclusive feature includes an output test switch to provide a fixed output (independent of the input) when pressed. The output test greatly aids in saving time during initial startup and/or troubleshooting. The test output level is adjustable from 0 to 100% of the output span.
Specifications Table:
| Input | 0-50 mV to 2-10 VDC, ±25 mVDC to ±10 VDC, 0-500 µA to 4-20 mADC |
| Output | 0-1 V to 0-10 V, ±5 V, ±10 V, 0-2 mA to 4-20 mA |
| Input Types and Ranges, Field Selectable |
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| DC Output Ranges, Field Selectable |
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| Input Loop Power Supply | 15 VDC ±10%, regulated, 25 mADC. May be selectively wired for sinking or sourcing mA input |
| Output Calibration | Zero and span set by using up/down buttons, ±10% range |
| Output Test | Front push button switch enables/disables test level output Adjustable 0-100% of span via up/down buttons |
| Output Resolution | 18 bit |
| Output Ripple and Noise | Less than ±0.2% of span |
| Linearity | better than ±0.1% span |
| Ambient Temperature Range and Stability | 10°C to +60°C operating ambientBetter than ±0.02% of span per °C stability |
| Response Time | 300 milliseconds nominal |
| Isolation |
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| Housing and Connectors |
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| Power | 9-30 VDC or 10-32 VAC 50/60 Hz, 3 W maximum |
