Visual range measuring devices
VISIC620

Measurement of visual range for roads, tunnels, sea routes and in weather stations

Your Benefits

Reliable measured values
Low operating costs
Low maintenance requirements due to long maintenance intervals

The exact device specifications and performance data of the product may deviate from the information provided here, and depend on the application in which the product is being used and the relevant customer specifications.

Overview

Measurement of visual range for roads, tunnels, sea routes and in weather stations

The VISIC620 determines the standard visual range on roads, sea routes, or in weather observation stations or measures the visibility (as k-value or in mg/m³) in tunnels. An automated self-test measures and compensates for possible front screen contamination. Furthermore, it offers excellent recognition of objects such as leaves or plants in the optical path. Therefore, the VISIC620 can measure fog reliably.

The maintenance interval of five years (except cleaning), the rugged stainless-steel housing and the possibility of power supply via solar cells or battery make the VISIC620 a real outdoor product, even in salty air.

At a glance

Large measuring range for visual range
Precipitation detector as an option
Contamination check
Minimum space requirements and low weight
Self-sufficient design possible with solar panel and battery
Rugged housing, also for salty air

Spare parts

Applications

Service & Support

Technical overview

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VISIC620 system

Measured values

Standard visual range, K-value

Measurement principles

Scattered light forward

Spectral range
	640 nm ... 660 nm Laser, protection class 2, power < 1 mW

Measuring ranges
Standard visual range	10 ... 500 m / 10 ... 16,000 m
	Output range freely adjustable

Response time (t₉₀)
	2 s ... 300 s

Accuracy
	± 5 m For visual range below 50 m
	± 10 % Of measured value for visual range below 5,000 m
	± 20 % Of measured value for visual range below 16,000 m

Repeatability
	± 2 %: for a visual range of 200 m

Ambient temperature
	–30 °C ... +55 °C

Storage temperature
	–40 °C ... +75 °C

Ambient humidity
	0 % ... 100 %

Electrical safety

Enclosure rating
	IP69K

Analog outputs

1 output:
0 ... 20 mA
Only VISIC620-1xxxx

Digital outputs

2 relay contacts:
48 V AC, 35 W / 48 V DC, 24 W
Only VISIC620-1xxxx

Digital inputs

1 potential-free contact:
4 V, 4.5 mA
Not with the VISIC620-1xxxx

Serial	✔ , ✔
Remark	Only VISIC620-2xxxx
Type of fieldbus integration	RS-232
	RS-485
Function	Proprietary service interface, connection to SOPAS ET software
	Proprietary service interface

Dimensions (W x H x D)
	479 mm x 117 mm x 261 mm (for details see dimensional drawings)

Weight
	5.6 kg

Material

Stainless steel 1.4571, powder-coated

Power supply
Voltage	24 V DC, ± 10 %
Power consumption	≤ 10 W

Test functions

Automatic self-test (contamination, drift, LED, disturbing objects)