Overview
The OPTIWAVE 1520 is a 2-wire 80 GHz radar level transmitter for basic applications with liquids and solids. Its PVDF Lens antenna and compact housing make it particularly suitable for use in confined spaces as well as harsh process and environmental conditions such as outdoor applications, where a high degree of robustness is required. The level radar is therefore the ideal choice for cost-effective level measurement of sewage sludge and wastewater as well as treated water, e.g. in pumping stations, screw lifting stations or water basins. It is equally designed for use in small silos with granulates such as sand or other products. The level transmitter comes waterproof (IP68 rated) and can thus withstand heavy rainfall and flooding.
With its front-flush antenna design and its narrow beam angle, the cost-effective 80 GHz radar can also be used in small open tanks or pressurised vessels with internal obstructions where level measurement with dead zones is not an option. Due to its extremely high dynamic range, the OPTIWAVE 1520 is also able to provide reliable readings in the event of condensation or moving surfaces.
Commissioning is easily carried out via Bluetooth® using the KROHNE OPTICHECK Level Mobile app or via HART® with the OPTICHECK DTM. The OPTIWAVE 1520 also utilises self-diagnostics of the OPTICHECK technology built-in. This enables continuous device testing and verification including reporting on site without process interruption and removal of the radar.
Product features and options depend on device configuration: Contact us to make sure that your preferred functionality can be combined in one device.
- Very economical level solution for simple applications with moderate accuracy requirements (±5 mm / ±0.2 in)
- Robust PVDF housing (IP68): Level transmitter withstands heavy rainfall and flooding events for several days
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PVDF Lens antenna in DN40 / 1½''
- Virtually no dead zone
- Small beam angle of 8° for reliable level measurement in narrow tanks and basins
- Antenna material is chemically resistant to a wide range of products
- Extremely high dynamics for reliable level measurement also in the event of condensation or agitated surfaces
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TBM (Tank Bottom Management) ensures reliable measurement even in empty tanks
- Dedicated algorithms to filter and compensate for irregular radar wave reflections that occur at tank bottom when the vessel is empty
- Allows for quick and easy commissioning of tanks regardless of their size, material or geometry
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User-friendly device installation and set-up, easy commissioning possible without prior knowledge
- Via Bluetooth® in combination with mobile phone or tablet and the OPTICHECK Level Mobile app
- Via HART® using the OPTICHECK DTM with quick set-up assistant
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Features OPTICHECK technology built-in
- Enhanced device diagnostics
- On-site verification without process interruption using the OPTICHECK service tools
- Verification report about device status with one click
- Drift-free and maintenance-free, no need for recalibration
- Delivered with a 5 m / 16.4 ft shielded cable
- Large choice of accessories available - from orientation kits to brackets and low pressure flanges to weather protections and purging kits
- 3-year warranty
Specifications
Depending on selected device configuration
General information
| Product type | Level transmitter |
| Product family name | OPTIWAVE |
| Product positioning | For basic liquid and solid applications |
| Product variants |
OPTIWAVE 1520 - IP68 rated, without display |
| Measurement variables | Distance, Level, Reflection, Volume |
| Measurement principle | Radar (FMCW) |
| Level measurement type | Continuous measurement |
| Contact to measured medium | No |
| Interface measurement | No |
| Redundancy | No |
| Measured media | Liquids |
| Measuring range (liquids) |
0…10 m/ 0…32.8 ft |
| Ambient temperature |
-25…+80°C/ -13…+176°F |
| Measuring point | Pressurised tank, Open tank, Open basin |
Operating conditions
| Process pressure |
-1...5 bar/ |
| Process temperature |
-25...+80°C/ -13…+176°F |
Materials
| Antenna | Polyvinylidene fluoride (PVDF) |
| Gaskets | Fluoroelastomer rubber (FKM/FPM) |
| Wetted parts | Polyvinylidene fluoride (PVDF), Fluoroelastomer rubber (FKM/FPM) |
Process connections
| Thread connections |
Male: |
Approvals/Standards
| Ingress protection | IP66/68 |
Communication
| Analogue outputs | 4…20 mA |
| Digital outputs | HART®, Bluetooth |
Accuracy
| Accuracy (liquids) |
Max. measuring error:
Repeatability: |
US 5435 
GB 3758 
AU 3558 
CA 3464 
IE 2703 
NZ 2582 
CN 1340 
SG 615 
