Categories: Marine Sensor

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.

VRS-20 Radar Level Sensor

Sensor

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 :

Mounting bracket.
5m cable with junction box.
Software, Manual and transit carton.

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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