Absolute Process Instruments APD 2208 D _ Isolated 2 channel DC and potentiometer to DC transmitter/ splitter
Cecomp Electronics, APD 2208 D, 2 Channel DC and Potentiometer to DC Transmitter, 9-30 VDC, 10-32 VAC Power
Features with all optional accessories:
- Removable plugs
- Output LoopTracker LEDs
- Selectable potentiometer or DC inputs
- Full I/O/power isolation
- 20 V output loop power supplies
- Factory Set AC Input Range
- Alarm Test, Optional Reset Button
Applications:
- Convert, Boost, Rescale Process Signals
- Isolate or Split Inputs
- Interface Process Signals with Panel Meters, Recorders, Data Acquisition, DCS, SCADA Systems
The APD 2208 features 2 input channels and 2 output channels in a compact housing. Each input channel is switch selectable for either a DC input or a potentiometer input.
Each DC input is factory ranged to your specifications. mA inputs are sinking. When a potentiometer input is selected almost any full-range potentiometer with a value of 0-100 Ω through 0-1 MΩ can be used without recalibration and without affecting accuracy. Consult factory for offsets or input ranges other than 0 to 100% of the potentiometer range.
The APD 2208 can also be configured as a DC signal splitter or a potentiometer signal splitter. For this application each DC input should be ordered with the same range.
Each output channel is factory ranged to your specifications and provides an optically isolated DC voltage or current output that is linearly related to the input. Sourcing mA outputs are standard. Sinking milliamp or high voltage outputs are optional. Isolation The full 3-way (input, output, power) isolation makes this module useful for ground loop elimination, common mode signal rejection or noise pickup reduction. LoopTracker API exclusive features include two LoopTracker LEDs (one for each output channel) that vary in intensity with changes in the process 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.
Isolation
The full 3-way (input, output, power) isolation makes this module useful for ground loop elimination, common mode signal rejection or noise pickup reduction.
LoopTracker
API exclusive features include two LoopTracker LEDs (one for each output channel) that vary in intensity with changes in the process 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.
Specifications Table:
| Input | Factory configured specify input ranges and type for channel 1 and channel 2 |
| Output | Factory configured specify output ranges and type for channel 1 and channel 2 |
| Voltage or mA Input Range |
|
| Potentiometer Input Range | Resistance: 0-100 Ω to 0-1 MΩ |
| Input Impedance | 200 kΩ minimum for voltage inputs 1 MΩ minimum for potentiometer inputs |
| Input Voltage Burden (Current) | 1.25 VDC maximum |
| Common Mode Rejection | 100 dB minimum |
| Output Ranges and Options |
Current sinking output option:
|
| Output Calibration | ±15% of span adjustment range typical |
| Output Loop Power Supplies | 20 VDC nominal, regulated, 25 mADC, <10 mVRMS max. ripple |
| Output Ripple and Noise | Less than 10 mVRMS |
| Linearity | Better than ±0.1% of span |
| Ambient Temperature Range and Stability | 10°C to +60°C operating ambient |
| Response Time | 70 milliseconds nominal |
| Isolation | 1200 VRMS minimum. Full isolation: power to input, power to output, input to output, output 1 to output 2 |
| Connectors | Four 4-terminal removable connectors, 14 AWG max wire size |
| Power | 9-30 VDC (either polarity) or 10-32 VAC |
