VRS-20 Radar Level Sensor
The VRS-20 is a pulsed K-band radar level sensor developed by Valeport to work seamlessly with the TideMaster Tide Display/Logger and other third party data loggers using RS232, RS485 and SDI-12 communication
Versatile and simple to install, the VRS-20 addresses a number of the issues traditionally associated with water level measurement.
Non-contact technology removes the installation, corrosion & fouling issues of submerged sensors, while simplifying datum control. Accuracy and performance are unaffected by changes in water density and atmospheric conditions.
The VRS-20 is a pulsed k-band radar level sensor developed by Valeport to work seamlessly with the Valeport TideMaster, operate standalone with optional telemetry systems, or interface directly to a third party data logger or PC.
Versatile and simple to install, the VRS-20 addresses a number of the issues traditionally associated with level measurement.
Sensor
Non-contact technology removes the installation, corrosion & fouling issues of submerged sensors, while simplifying datum control. Accuracy and performance are unaffected by changes in water density and atmospheric conditions.
SPECIFICATION
| Minimum Range : | 0.8 m | |
| Maximum Range : | 20 m | |
| Beam Angle : | ±6° | |
| Frequency : | 25 GHz | |
| Accuracy : | ±10 mm | |
| Precision : | 1 mm | |
| Footprint : | Radius at different ranges : | |
| Range (m) | Radius (m) | |
| 2 | 0.21 | |
| 5 | 0.53 | |
| 10 | 1.05 | |
| 20 | 2.10 | |
Sampling
The VRS-20 offers averaged data output options for water level / tide measurements only. Wave measurement sampling is not available.
| Raw Sampling Rate : | 8 Hz |
| Averaging period : | Selectable (10 to 360 seconds) |
| Output Parameters : | Mean Range |
| Mean Height | |
| Std. Deviation |
Electrical
| Range : | 9-28 V DC |
| Power : | 35mA @12V dc |
Communications
- RS232/485 and SDI12 fitted as standard with communications method defined by pin selection.
- Optional integrated GPRS telemetry module.
| RS232 : | Up to 200m cable, direct to serial port |
| RS485 : | Up to 1000m cable, addressable half duplex |
| SDI 12 : | Up to 100m cable. |
Housing & Mounting
- Fully sealed, injection molded housing rated to IP67 (NEMA 6) with PTFE window.
- Integral stainless steel mounting bracket with tool free, 2 axis adjustment.
- Integrated spirit bubbles for easy levelling.
| Length : | 255mm |
| Width : | 130mm |
| Height : | 130mm (75mm without mount) |
| Weight : | ~2 kg |
Ordering
| 0745001 | VRS-20 Radar Level Sensor Supplied with :
|
Shipping
| Cardboard Carton : | 37 x 28 x 20cm, |
| ~ 4kg |
Type Approval
The VRS20 radar sensor is fully compliant with :
- ETSI EN 302 729-2 V1.1.2(2011-05)
Electromagnetic compatibility and Radio spectrum Matters (ERM)
Short Range Devices (SRD);
Level Probing Radar (LPR) equipment operating in the frequency ranges :
6 GHz to 8,5 GHz, 24,05 GHz to 26,5 GHz, 57 GHz to 64 GHz and 75 GHz to 85 GHz.
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