Absolute Process Instruments API 4400 G _ Fully isolated. Inputs share
Cecomp Electronics, API 4400 G, Isolated DC to DC Math Function Transmitter, (A+B+C+D)/4
Features:
- Factory Set Custom I/O Ranges
- Easy-to-Install Plug-In Design
- Full 2000 V Input/Output/Power Isolation
- Input and Output LoopTracker® LEDs
- Output Test Button
Applications:
- Add, Subtract, Average Flow Signals
- Average Multiple Signals
The API 4400 G are factory configured to accept two to four DC voltage or current inputs and provide an optically isolated DC voltage or current output that is proportional to the sum, average and/or difference of the inputs depending on the model.
The A, B, C and D inputs should be the same type, and mixed input ranges are allowable. Consult the factory when selecting mixed input ranges.
Inputs are converted to a percentage and then the math function is applied. Consult the factory if true voltage math is required.
The API 4400 G uses no transformers or choppers in the signal path for best noise immunity and freedom from AC artifacts in the output. The inputs are not isolated from each other and use the same signal common connection. The modules do features full 3-way (input, output, power supply) isolation.
Common ranges as well as custom ranges are possible.
LoopTracker
API 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 Test
An API exclusive feature includes the Functional Test Button to provide a fixed output (independent of the input) when held depressed. The output test level is adjustable from 0 to 100% of output span. The functional test button greatly aids in saving time during initial startup and/or troubleshooting.
Installation
The API 4400 G plug into an industry standard 11-Pin octal socket sold separately. Sockets API 011 and finger-safe API 011 FS allow either DIN rail or panel mounting. The plug-in design, 3-way isolation, and robust electronics allows the module to be quickly hot-swapped without removing the power or I/O signals.
Specifications Table:
| Function | (A + B + C + D) / 4 |
| DC Input Ranges | Factory configured, please specify 4 input ranges.
System voltages must not exceed socket voltage rating Inputs are converted to a percentage and then the math function is applied. Consult factory for mixed ranges, special ranges or non-standard functions. |
| Input Impedance |
|
| Input Voltage Burden (Current) | 1.0 VRMS maximum |
| Balance Between Inputs | Better than ±0.5% of span |
| Input Loop Power Supply | 20 VDC nominal, regulated, 25 mADC, max. ripple <10 mVRMS |
| DC Output Range | Factory configured, please specify output range or consult factory. See table on other side for common ranges.
|
| Output Calibration | Multi-turn zero and span potentiometers for output (±15% of span adjustment range typical) |
| Output Loop Power Supply | 20 VDC nominal, regulated, 25 mADC, max. ripple <10 mVRMS |
| Output Test | Sets output to test level when pressed Adjustable 0-100% of span |
| Output Ripple and Noise | Less than 10 mVRMS |
| Linearity | Better than ±0.1% of span |
| Response Time | 70 milliseconds typical |
| Ambient Temperature Range and Stability |
|
| Isolation |
|
| Housing and Sockets |
|
| Power | 115 VAC ±10%, 50/60 Hz, 2.5 W max |
