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STACK 990

STACK 990

STACK 990

Product catalog summary
Overview: The STACK 990 is a particulate measurement system designed for continuous monitoring of emissions from industrial sources. It is extensively used for measuring particulate matter (mg/m³) and locating leaks in bagfilter stack applications.
Key Features:
  • ElectroDynamic® Probe Electrification ensures sensor rod remains unaffected by contamination.
  • Advanced sensor design includes zero, span, and contamination checks.
  • Upgradeable to control up to 32 sensors and 16 additional calculated channels for mass or normalized concentration.
  • Combines regulatory approvals (TUV Approved BImSchV 13, 17, and 27) for dust measurement and leak monitoring.
Technical Specifications:
  • Standard Sensor: Operates at 250°C, with options for passive/active sensors up to 800°C.
  • Insulated Sensor: Available for high temperatures up to 800°C.
  • Measurement Capability: 0–500 mg/m³ with long-term zero drift of <0.1 mg/m³.
  • Velocity Range: Greater than 6 m/s.
  • Stack Temperature Rating: -20°C to +250°C, with options up to +800°C.
  • Power Supply Voltage: 18–24V DC.
  • Enclosure Protection Rating: IP65, with IP66 for Ex-rated sensors.
  • Enclosure Material: Die-cast aluminium with 316 stainless steel for standard process connections.
  • Weight: 1.8 kg for standard sensor.
  • Probe Rod Lengths: 100–1000 mm, with insulated variants from 200–1000 mm.
Stack Connection Options:
  • 1.5” BSP
  • 3” ANSI or DN80 PN10/16 combined flange (standard)
  • 2” ANSI Flanged air purge adapter
  • 2” ANSI Flanged Hastelloy® air purge adapter for temperatures up to 600°C
Certification:
  • Hazardous Zones Certification (ATEX/IECEx) for various zones and temperature ranges.
  • Certificate numbers and certification codes provided for both dust and gas zones.
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Catalog excerpts

STACK 990-1

PARTICULATE MEASUREMENT SYSTEM An approved particulate measurement system for continuously monitoring emissions from industrial sources. FEATURES AND BENEFITS Extensively used for measurement (mg/m³) and leak location in bagfilter stack applications ElectroDynamic® Probe Electrification ensures the sensor rod is unaffected by contamination Advanced sensor design includes zero, span and unique contamination checks Upgradeable to include control for up to 32 sensors, plus 16 additional calculated channels (e.g. for Mass or normalised concentration) Combines regulatory approvals (TUV Approved BlmSchV 13, 17 and 27) for both dust measurement and leak monitoring TUV APPROVED FOR PLANTS WITH GERMAN REGULATIONS ACCORDING TO 13., 17., 27 BLMSCHV

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STACK 990-2

STACK 990 PARTICULATE MEASUREMENT SYSTEM TECHNICAL SPECIFICATIONS Sensor Performance Specifications Performance Certification Hazardous Zones Certification (ATEX/IECEx) Zone 2 (Gas), Zones 20 and 21 (Dust) up to 400°C Zones 2 and 22 (Gas/Dust) up to 800°C Measurement Capability Long-term Zero Drift Velocity Range Stack Temperature Rating Sensor Electrical Specifications Power Supply Voltage 18 –24V DC (from the control unit) Cable entries Sensor Mechanical Specifications Enclosure Protection Rating IP65 (IP66, Ex-rated sensors only) Enclosure Material Die-cast aluminium Standard Process Connections...

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STACK 990-3

Elevating standards. For life. STACK 990 PARTICULATE MEASUREMENT SYSTEM Certification code Ex tb IIIC T80°C Db IP66 Tamb = -20°C to +55°C Inside stack (sensor probe)B Ex ta IIIC Da IP66 Tamb = -20°C to +250°C or Tamb = -20°C to +400°C Outside stack (enclosure) Outside stack (enclosure) Certification code Inside stack (sensor probe)D Gas ZoneCertificate number Certification code Sira 10ATEX4294X Outside stack (enclosure) Inside stack (sensor probe)B Ex nA IIC Gc IP66 Tamb = -20°C to +250°C or Tamb = -20°C to +400°C or Tamb = -20°C to +800°C Ex nA IIC Gc IP66 Tamb = -20°C to +250°C or Tamb = -20°C...

 Open the catalog to page 3

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