ERZ 2000 Flow Computer Series
Micro-computer for Optional Flow Correction
| Available as | Flow corrector based on state variables ERZ 2004 |
|---|---|
| Flow corrector based on density variables ERZ 2002 | |
| Flow corrector based on calorific value ERZ 2102, ERZ 2104 | |
| Differential pressure calculator ERZ 2112, ERZ 2114 | |
| Multistream version ERZ 2404 | |
| Application | Parallel calculation of compressibility according to all established methods, (e.g., GERG 88 S, AGA 8, AGA NX 19 or Beattie-Bridgeman) |
| When carrying out corrections using density and standard density, the speed of sound effect is measured and calculated | |
| PC-based computer | |
| Parameters are freely programmable and remote parameterisable | |
| Easy to operate using Internet browsers | |
| DSfG control point function | |
| Version ERZ 2404 for up to 4 gas meters | |
| Optional plug-in Ex-i card for pressure, temperature and volume inputs | |
| Gas rates function | |
| Correction of meter’s performance curve (also using Reynold’s index) | |
| Parameters, constants, limit values freely programmable | |
| Freezing measuring and calculation values | |
| Calibration “on the fly” | |
| Plug-in modules, 19" plug-in | |
| PTB-approved | |
| Connections | 2-channel volume input |
| Digital and analogue inputs | |
| Impulse and analogue outputs | |
| DSfG interface according to DVGW G 485 | |
| Modbus interface (ASCII/RTU/TCP) | |
| Ethernet TCP/IP network interface | |
| Display | Electronic totalizers |
| Supply voltage | 230/110 VAC, 24 VDC |
| Ambient temperature | –20 °C to +55 °C |
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Technical description
Operation & maintenance, spare parts
