WSR550 76-81GHz Radar level transmitter
The series is FMCW radar operating at 76-81 GHz, which has a maximum measuring range of 120m and nearly zero blind zone. It supports 4-wire and 2-wire applications. Higher operating frequency and shorter wavelength make it ideal for solid applications, including those with extreme dust and high temperature. Built-in rich algorithm ensure stable output even in the application with fast agitator.
Features
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Range: 0.08m~10m/0.08m~20m/0.08m~30m/0.3m~60m
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Accuracy: Liquid measurement: ± 2mm; Solid measurement: ± 5mm
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Power: (15~28)VDC or 220VAC
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Frequency Range: 76GHz~81GHz,5GHz FMCW bandwidth
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Product Details
The 76-81GHz series products refer to frequency modulated continuous wave (FMCW) radar products operating at 76-81GHz, supporting four-wire and two-wire applications. The product has multiple models, the range can reach 120m, and the blind zone can reach 8 cm. Because of its higher operating frequency and shorter wavelength, it is especially suitable for solid applications. The working method of transmitting and receiving electromagnetic waves through the lens has unique advantages in high dust and harsh temperature environments (+150℃). The instrument provides flange or thread connection, which makes installation convenient and easy.

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Specification
| Measured variable | Level / Distance |
| Frequency | 76GHz ~ 81GHz, 5GHz FMCW bandwidth |
| Measuring range | 0.08m~10m/0.08m~20m/0.08m~30m/0.3m~60m |
| Measurement accuracy | Liquid measurement: ± 2mm Solid measurement: ± 5mm |
| Beam angle | 3°/8° |
| Minimum measured dielectric constant | ≥2 |
| Power | (15~28)VDC or 220VAC |
| Power consumption | ≤2W |
| Communication | MODBUS HART/Series |
| Signal output | (4~20)mA or RS-485 |
| Fault output | 3.8mA, 4mA, 20mA, 21mA, hold |
| Field operation / programming | 128 × 64 dot matrix display / 4 buttons PC software Bluetooth |
| Humidity | ≤95%RH |
| Enclosure | Aluminum alloy, stainless steel |
| Antenna type | Lens antenna/anti-corrosive antenna / flange isolated by quartz |
| Process temperature | T0:(-40~+80)℃; T1:(-40~+150)℃; |
| Process pressure | (-0.1~2) MPa |
| Product Size | Ø100*270mm |
| Cable entry | M20*1.5 |
| Recommended cables | AWG18 or 0.75mm² |
| Protection class | IP67 |
| Installation method | Thread or flange |
| Weight | 2.480Kg / 2.995Kg |
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Application

