Controller – Fuji ERW 700
ERW 700 uses input data such as flow (differential pressure), pressure, temperature and density to calculate the volume, standard volume and mass of liquids, gases and steam.
The energy and flow computer ERW 700 is a state-of-the-art calculation unit. ERW 700 has a graphical display which allows users to view all the relevant measuring and calculation values. Using the menu guidance, it is possible to alter the configuration and parameters via the respective keys. Optional input and output cards are available to enhance device functioning.
The energy and flow computer consists of the following components:
- Calculation unit with integrated inputs and outputs (basic module)
- LC display unit with 4 keys
- Input cards (optional)
- Output cards (optional)
Application
- Billing meter for district and local heat
- System monitoring in energy plants
- For heat/cold production in the middle and upper performance range
- For greater measuring accuracy and reliability requirements
| Resistance Model: | PT 100, PT500, PT1000 |
| 4-wire measurement | |
| Resolution: 24 Bit | |
| Measuring rate: approx. 16/s | |
| Sensor break monitoring | |
| Current | Measuring range: 0 … 0.22 mA |
| Error detection 3.6 mA according to Namur NE43 | |
| Resolution: 24 Bit | |
| Measuring rate: approx. 16 / s | |
| Frequency | |
| Pulse | |
| Status | |
| Frequency | Frequency measurement: 0.1 Hz …15 kHz |
| Metering: 0 … 15 kHz | |
| Min. measuring time can be set: (0.1 s, 1 s, 2 s) | |
| Measuring uncertainty: 0.01% of MV | |
| Temperature influence: 0.0025% / K | |
| Resolution: 0.001% of MV | |
| Active signals: Voltage Lo (Us approx. 2 V), Hi (Us approx. 9 V) | |
| Passive signals: O.C, relay, Namur |
