## General Information

This document details the differences between the factory configuration of the Endress+Hauser Promass 500DP and the specific configuration implemented for the CO2 system in the mixer.

### Device Information

| Parameter | Factory Configuration | CO2 System Configuration |
|-----------|----------------------|--------------------------|
| Device tag | Promass300/500DP | Promass300/500DP |
| Serial number | X10F9F02000 | X10F9F02000 |
| Firmware version | V1.00.02 | V1.00.02 |
| Nominal diameter | DN15 / 1/2" | DN15 / 1/2" |

## Key Configuration Differences

### 1. Measurement Units

| Parameter | Factory Values | CO2 System Values | Impact |
|-----------|---------------|-------------------|--------|
| Mass flow unit | kg/h | g/min | Higher precision for real-time process control |
| Mass unit | kg | g | Consistent with flow units |
| Density unit | kg/l | g/ml | Consistent with mass units |
| Medium selection | Liquid | Gas (Carbon dioxide CO2) | Correctly configured for CO2 measurement |

### 2. Communication and Fieldbus

| Parameter | Factory Values | CO2 System Values | Impact |
|-----------|---------------|-------------------|--------|
| Device address | 126 | 22 | Specific address in PROFIBUS network |
| Status PROFIBUS Master Config | Not active | Active | Confirmation of active communication with PLC |
| Bus termination | Off | On | Proper network termination for signal integrity |

### 3. Analog Output Configuration

| Parameter | Factory Values | CO2 System Values | Impact |
|-----------|---------------|-------------------|--------|
| 0/4 mA value (Output 1) | 0.000 kg/h | 0.000 g/min | Adjusted to system units |
| 20 mA value (Output 1) | 1300.000 kg/h | 250000.0 g/min | Range adjusted for CO2 dosing process |
| 100% bargraph value 1 | 1300.000 kg/h | 250000.0 g/min | Display range consistent with operational range |

### 4. Low Flow Cut Off

| Parameter | Factory Values | CO2 System Values | Impact |
|-----------|---------------|-------------------|--------|
| On value low flow cutoff | 26.0000 kg/h | 4333.333 g/min | Adjusted to eliminate noise readings when idle (26 kg/h ≈ 433 g/min) |
| Off value low flow cutoff | 50% | 50% | No change |

### 5. Partially Filled Pipe Detection

| Parameter | Factory Values | CO2 System Values | Impact |
|-----------|---------------|-------------------|--------|
| Assign process variable | Density | Off | Disabled as not applicable for gas measurement |

### 6. Analog Input Configuration

| Parameter | Factory Values | CO2 System Values | Impact |
|-----------|---------------|-------------------|--------|
| Analog input 3 Channel | Corrected volume flow | Density | Modified for density monitoring |

### 7. Calibration and Adjustments

| Parameter | Factory Values | CO2 System Values | Impact |
|-----------|---------------|-------------------|--------|
| Calibration factor | 1.8568 | 1.8568 | No change |
| Zero point | 23 | 23 | No change |
| Calibration date/time | 16.01.25 05:52 | 16.01.25 05:52 | Same calibration |

## Performance Parameters

The device is configured with all the necessary performance parameters for CO2 measurement, with measurement status indicators showing "Good" for all active channels, indicating reliable operation.

## Recommendations

1. **Monitor flow range**: Verify that the configured range of 0-250000.0 g/min is appropriate for all operating conditions of the CO2 system.

2. **System integration verification**: Confirm that the PROFIBUS address (22) is correctly recognized by the control system.

3. **Density measurement validation**: Although CO2 density is relatively low, confirm that the density measurements are accurate for process control.

4. **Document future calibrations**: Maintain records of any additional adjustments made to the instrument.

## Conclusions

The Promass 500DP configuration for the CO2 system has been specifically adapted to:

1. Work with more appropriate units for gas measurement (g/min instead of kg/h)
2. Establish measurement ranges appropriate for CO2 dosing (250000 g/min)
3. Configure the device specifically for carbon dioxide gas measurement
4. Set up PROFIBUS communication with the appropriate address for the system
5. Disable density-based partially filled pipe detection, which is not applicable for gas measurement

These changes optimize the flowmeter's performance for its specific application in the CO2 dosing process.