PHASEGUARD

In-line Interface Monitor for Turbidity or Colour

The PhaseGuard monitors interface changes of turbidity or colour. Three models of the PhaseGuard cover the possible applications: interface switching for turbidity (model T), for colour (model C), for high turbidity (model HT). The PhaseGuard is factory adjusted with a universal measuring range based on absorption. For simple applications and system integration the instrument configuration and communication can be easily done using the serial interface in combination with the existing outputs. For a more comfortable installation and operation the optional control unit SICON with touch screen technology and colour display can be connected.

• Sealless design
• Extremely low maintenance
• Recognition of the phase change by turbidity or colour

SPECIFICATION

Wavelength turbidity

LED 880 nm

Wavelength color

LED 430 nm

Measuring principle

Absorption

Nominal range

0 .. 100 % Absorption

Resolution

0.5 % Absorption

Installation

In-line housing Varivent® or compatible

Enclosure

Stainless steel 1.4301

Protection

IP66

Sample temperature

-10 .. +100 °C

Pathlength

10 mm (models T & C)
5 mm (model HT)

Outputs

1 x 4 .. 20 mA
2 x Open-Collector Transistor

Pipe diameter

≥ DN 40 (modells T & C)
≥ DN 65 (model HT)

Supply voltage

9 .. 30 VDC

Power input

< 2 W (with Profibus DP: < 3 W)

Sample pressure

≤ 1 MPa (10 bar) @ 100 °C

Interfaces

Profibus DP or Modbus RTU (option)

Ambient environment

-10 .. +50 °C / 0 .. 100 % RH

Cleaning

CIP/SIP compatible up to 120 °C @ 2h

Material sensor head

Stainless steel 1.4404

Windows material

Sapphire

Configuration

USB Interface and parameter file

Control Units

SICON
SICON M