ERT-A2120 combines 60GHz frequency-modulated continuous-wave radar, an integrated display and local control buttons for continuous liquid level measurement. The 9° antenna beam helps limit unwanted echoes from tank walls and internal structures. Applications include wastewater facilities, rivers and reservoirs, municipal supply and drainage systems, flood-level monitoring, industrial tanks and process vessels.
| Antenna version | Intended liquid conditions |
|---|---|
| Lens antenna | Liquids containing impurities, foam or surface turbulence |
| Basic antenna | Clean, noncorrosive liquids without impurities |
| Parameter | Specification |
|---|---|
| Measurement principle | High-frequency FMCW radar |
| Measured variable | Liquid level |
| Measuring range | 0-20m |
| Blind zone | ≤20cm |
| Accuracy | ±2mm |
| Resolution | 0.005% of range |
| Transmitter output | 4-20mA standard |
| Alarm output | Dual relay outputs, optional |
| Communications | RS485, optional |
| Operating voltage | 24VDC or 220VAC |
| Process connection | M59×2 thread |
| Operating temperature | -10°C to 60°C |
| Operating humidity | 0-95%RH |
| Protection | IP65 |
| Antenna beam angle | 9° |
| Transmitting frequency | 60GHz |
The built-in display and buttons allow measurement parameters to be set at the installation point. The standard 4-20mA output supports level transmission; optional RS485 supports communication with a monitoring system. Optional dual relay outputs provide high- and low-level alarm or control signals for associated control equipment.
