Information

The FWE200 product family has been phased out. You will find possible successors below. If no product family is displayed, there is no 1:1 replacement.
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Scattered light dust measuring devices FWE200DH

For very low to medium dust concentrations
Gas sampling and return combined in one probe
Contamination check
Automatic monitoring of zero and reference point
Easy parameterization and convenient operation – optionally via supplemental remote unit
Integrated system diagnostics for early detection of maintenance requirements

Scattered light dust measuring devices
FWE200

Your Benefits

Reliable dust measurement in wet gas
No moving parts in contact with aggressive gas, therefore low maintenance
Mounting directly at the duct due to compact design

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

The FWE200 dust measuring device is designed to measure dust concentrations in wet flue gas. The gas is extracted via a sampling probe and heated above dew point. Droplets in the gas are vaporized, making it impossible for them to falsify the measurement results. The scattered light principle enables even very low dust concentrations to be measured.

At a glance

For very low to medium dust concentrations
Gas sampling and return combined in one probe
Contamination check
Automatic check of zero and reference point

Accessories

Spare parts

Applications

Service & Support

Technical overview

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FWE200 system

Measured values

Scattered light intensity, dust concentration (after gravimetric comparison measurement)

Performance-tested measurands

Dust concentration

Measurement principles

Scattered light forward

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

Measuring ranges
Dust concentration	0 ... 5 mg/m³ / 0 ... 200 mg/m³
	Measuring ranges freely selectable
	Higher measuring ranges on request

Certified measuring ranges
Dust concentration	0 ... 15 mg/m³ / 0 ... 50 mg/m³

Response time (t₉₀)
	0.1 s ... 600 s Freely adjustable

Accuracy
	± 2 % Of measuring range full scale

Process temperature
PVDF gas removal probe	≤ +120 °C
Hastelloy gas removal probe	≤ +220 °C

Process pressure
	–20 hPa ... 20 hPa

Process gas velocity
	4 m/s ... 20 m/s

Process gas humidity
	Max. 10 g/m³ liquid water without water vapour

Ambient temperature
	–20 °C ... +50 °C

Conformities

U.S. EPA PS-11 compliant

Electrical safety

Enclosure rating
System	IP54
Electronics enclosure	IP65

Analog outputs

1 output:
0/2/4 ... 20 mA, 750 Ω
Electrically isolated; second output as option

Digital outputs

4 relay contacts:
250 V, 1 A
Preset for failure, warning, limit value and maintenance

Digital inputs

1 input:
Potential-free; for maintenance switch

Serial	✔
Type of fieldbus integration	RS-232
Function	Proprietary service interface

Operation

Menu-driven operation via control unit

Dimensions (W x H x D)
FWE200 measuring and control unit	730 mm x 830 mm x 340 mm (for details see dimensional drawings)

Weight
FWE200 measuring and control unit	65 kg
Sampling probe	≤ 15 kg

Power supply
Voltage	115 V AC
	230 V AC
Frequency	47 ... 63 Hz
Power consumption	≤ 2,500 VA

Options

FWE200 mounting rack

SLV4-2 purge air unit, 2BH1300, 1-ph

Description

Unit to provide dust-free air for flushing of optical surfaces

Gas flow rate
	38 m³/h ... 63 m³/h At 30 hPa counter pressure, depending on low pressure inside the filter

Ambient temperature
	–20 °C ... +40 °C

Electrical safety

Enclosure rating
	IP54

Dimensions (W x H x D)
	550 mm x 550 mm x 257 mm (for details see dimensional drawings)

Weight
	18 kg

Power supply
Voltage	115 V AC
	230 V AC
Frequency	50 Hz / 60 Hz
Current consumption	≤ 6 A
Power consumption	≤ 450 VA

Auxiliary gas connections
Purge air	40 mm

Test functions

Pressure switch (switching point –35 hPa)

Integrated components

2-step air filter, type Europiclon, dust capacity 200 g