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Scattered light dust measuring devices
FW101 Ex

This product family has been phased out!
Effective monitoring of dust concentrations in explosive environments with scattered light

Your Benefits

  • One-sided installation
  • Easy mounting
  • Measurements in explosive environments

Overview

Effective monitoring of dust concentrations in explosive environments with scattered light

The FW101 Ex measuring device is used in the constant measurement of dust concentrations in the small to medium range. It measures independently of gas velocity, humidity, or particle charge. The probe-shaped designed of the FW101 Ex provides a particular advantage. It can be installed at one end of the gas duct and requires neither mechanical adjustment nor adjustment to dust-free measurement sections. As a result, the measuring device is versatile, e.g., for gas channels with small to large diameters and for thin and thick-walled stacks.

At a glance
  • Automated monitoring of zero and reference point
  • Contamination check
  • Optional evaluation unit for remote control
  • Device versions for Ex zones 1, 2, and 22

Accessories

Applications

Service & Support

Technical overview

 

Please note: 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.

  • FW101 Ex system
    Measured valuesScattered light intensity, dust concentration (after gravimetric comparison measurement)
    Measurement principlesScattered light forward
    Spectral range
    640 nm ... 660 nm
    Laser, protection class 2, power < 1 mW
    Measuring ranges
    Dust concentration0 ... 5 mg/m³ / 0 ... 200 mg/m³

    Measuring ranges freely selectable

    Higher measuring ranges on request

    Response time (t90)
    0.1 s ... 600 s
    Freely adjustable
    Accuracy
    ± 2 %
    Of measuring range full scale
    Process temperature
    Standard version–40 °C ... +220 °C
    High temperature version–40 °C ... +400 °C
    Process pressure
    With external purge air unit–50 hPa ... 30 hPa
    With instrument air (provided by the customer)–50 hPa ... 100 hPa
    Process gas humidity
    Non-condensing
    Duct diameter
    ≥ 0.25 m
    Electrical safetyCE
    Test functions

    Automatic self-test (linearity, contamination, drift, aging)

    Contamination limit values: Warning at 30%, fault at 40%

    Manual linearity test with reference filter

    OptionsExternal purge air unit
  • FWSE101 Ex sender/receiver unit
    DescriptionAnalyzer unit of the measuring system
    Ambient temperature
    –20 °C ... +40 °C
    Ex-approvals
    ATEX

    Version for Ex-zone 1 and 2: II 2G Ex d IIC T6

    Version for Ex-zone 22: II 3D Ex t IIIB T80°C Dc IP54

    Enclosure rating
    IP66
    Dimensions (W x H x D)

    Nominal length 435 mm

    Nominal length 735 mm

    180 mm x 200 mm x 700 mm

    180 mm x 200 mm x 1,000 mm

    For details see dimensional drawings
    Weight
    Nominal length 435 mm10.6 kg
    Nominal length 735 mm11.9 kg
    Power supply
    Voltage24 V
    Supply via connection unit
    Power consumption≤ 4 W
  • AK1-Ex connection unit
    DescriptionUnit for connecting data cables and power supply to the system components, for potentially explosive atmospheres
    Ambient temperature
    –20 °C ... +40 °C
    Ex-approvals
    ATEXII 2G Ex de IIC T6
    Enclosure rating
    IP65
    Analog outputs1 output:
    0/2/4 ... 20 mA, 750 Ω
    Electrically isolated, second output as option
    Digital outputs3 relay contacts:
    48 V, 1 A
    Potential-free, for status signals "operation/ failure", "limit value", "maintenance"
    Digital inputs1 input:
    Potential-free, for maintenance switch
    Serial
    Type of fieldbus integrationRS-232
    FunctionProprietary service interface
    Indication
    Double-spaced LC display
    Dimensions (W x H x D)
    210 mm x 493 mm x 180 mm
    For details see dimensional drawings
    Weight
    13.3 kg
    Power supply
    Voltage100 ... 240 V
    Frequency47 ... 63 Hz
    Power consumption≤ 15 W
  • AK1-Ex22 connection unit
    DescriptionUnit for connecting data cables and power supply to the system components, for potentially dust explosive atmospheres
    Ambient temperature
    –20 °C ... +40 °C
    Ex-approvals
    ATEXII 2D Ex tD A21 T80°C IP6x
    Enclosure rating
    IP65
    Analog outputs1 output:
    0/2/4 ... 20 mA, 750 Ω
    Electrically isolated, second output as option
    Digital outputs3 relay contacts:
    48 V, 1 A
    Potential-free, for status signals "operation/ failure", "limit value", "maintenance"
    Digital inputs1 input:
    Potential-free, for maintenance switch
    Serial
    Type of fieldbus integrationRS-232
    FunctionProprietary service interface
    Indication
    Double-spaced LC display
    Dimensions (W x H x D)
    200 mm x 300 mm x 155 mm
    For details see dimensional drawings
    Weight
    4.9 kg
    Power supply
    Voltage100 ... 240 V
    Optional: 24 V DC ± 2 V
    Frequency47 ... 63 Hz
    Power consumption≤ 15 W
  • SLV5-2 purge air unit, 2BH1300, ATEX 3/2D
    DescriptionUnit for the provision of dust-free air for purging optical surfaces, for use in dust explosive environments.
    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
    Enclosure rating
    IP54
    Dimensions (W x H x D)
    550 mm x 550 mm x 258 mm
    For details see dimensional drawings
    Weight
    18 kg
    Power supply
    Three-phase current

    3-phase, Δ: 230 V, 50 Hz, 2.4 A, 550 W

    3-phase, Y: 400 V, 50 Hz, 1.4 A, 550 W

    Auxiliary gas connections
    Purge air40 mm
    Test functionsPressure switch (switching point –35 hPa)
    Integrated components2-step air filter, type Europiclon, dust capacity 200 g
  • SLV5-1 purge air unit, 2BH1300, ATEX 3/2G
    DescriptionUnit to provide dust-free air for flushing of optical surfaces, for potentially explosive atmospheres
    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
    Enclosure rating
    IP54
    Dimensions (W x H x D)
    550 mm x 550 mm x 258 mm
    For details see dimensional drawings
    Weight
    18 kg
    Power supply
    Three-phase current

    3-phase, Δ: 230 V, 50 Hz, 2.4 A, 550 W

    3-phase, Y: 400 V, 50 Hz, 1.4 A, 550 W

    Auxiliary gas connections
    Purge air40 mm
    Test functionsPressure switch (switching point –35 hPa)
    Integrated components2-step air filter, type Europiclon, dust capacity 200 g
All technical data can be found accompanying the individual product

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