Sensor Description; Construction; Areas Of Application; Measurement And Control System - Endress+Hauser CUS 5 Instructions De Montage Et De Mise En Service

Turbidity sensor CUS 5
2.

Sensor description

2.1

Construction

∅ 8
ca. 60
2.2

Areas of application

The CUS 5 sensor is designed for turbidity
measurements, particularly for detecting the
phase limits between different media.
2.3

Measurement and control system

The CUS 5 sensor is directly supplied with a
direct current of 24 V (20 - 30 V DC allowed)
and will deliver an output signal between
4 and 20 mA to a corresponding control or
regulation device. A separate measurement
transmitter is not needed.
Caution:
The sensor voltage supply must be
provided by two separate wires.
An intrinsically safe 2-wire supply is
not adequate!
2.4

Operating principle

Turbidity measurements are made using
the 135° scattered light method. Radiation
from an infrared diode (880 nm) is emitted
at a defined angle into the medium to be
measured. The various indices of refraction
of the glass and measurement medium are
taken into account.
Particles in the measurement medium reflect
and scatter the infrared radiation.
The CUS 5 measures the infrared radiation
intensity of the scattered light with a particular
aperture angle at an angle of 135° with
respect to the source.
Endress+Hauser
Thread G1''
217
Typical applications include, e.g., purification
processes or scum recognition in sewage
treatment plants.
∅ 40 ± 0,1
191
Note:
The sensor contains no internal
galvanic separation between the
voltage supply and the signal output.
See Chapter 4.1 when making the
electrical connections!
Receiver Sender
135°
Particle
2. Sensor description
12US005A.CHP
Fig. 2.1 Dimensions of the CUS 5
Fig. 2.2 Turbidity measurement
using the 135° scattered
light method
19