• Best Value In Solids Flow Detection
  • Superior Application Versatility
  • Excellent Sensitivity
  • Indicate Flow/No-Flow In Chutes, Feeders, and Pipelines
  • On/Off Flow Detector (SFD-2)
  • Analog Output Indicator (SFI)
  • Hazardous Location Approval
  • Senses Light And Heavy Materials, Small And Large Particles
  • Non-Contact Sensor Detects Flow Through Most Non-Metallic Surfaces
  • Non-Intrusive Flush Mounting - No Probe Protruding Into Material Flow
  • SFD-2 Provides Relay Outputs and Convenient Remote Electronics
  • SFI Solids Flow Indicator Provides Variable Analog Signal
  • Sensors Include CSA Class II, Division I Approval for Hazardous Locations
Monitor's line of microwave solids flow monitors are high-quality, industrial-grade instruments capable of providing a signal indicating the flow/no-flow condition of solids and powders in gravity chutes, feeders, and pneumatic pipelines. The Model SFD-2 Solids Flow Detector provides relay outputs that can be set up to indicate changes in the target flow stream (on/off). The Model SFI Solids Flow Indicator provides an analog output which varies with changing conditions of the material flow stream. These non-contact monitors contain no moving parts or probes that can wear out or break off in the material flow, thus ensuring process integrity.

The SFD-2 and SFI use low-power microwaves to sense motion within the chute or pipeline being monitored. Microwaves are virtually unaffected by ambient noise, light, heat, humidity, pressure, vacuum, high or low temperatures, or dust. This provides maximum effectiveness in typical industrial application environments. These advantages over sonic or mechanical flow monitors make microwave technology the best choice for solids flow monitoring.
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Item #

Operating Voltage

Sensor Approvals

Seals

Power Supply

Output

Ambient Operating Temperature

Ambient Operating Temperature 

Power Requirements

17-8411-11 N/A Universal 100-240 VAC( ±10%) N/A Hazardous Locations (North America) (Sensor ONLY) N/A Teflon N/A Power Supply/Cond.Board Only N/A None, signal from transceiver is delivered to and processed by power supply/conditioning circuit board N/A -40 to 185 ºF-40 to 85 ºC N/A -40 to 158 ºF N/A Provided by power supply/conditioning PCB
17-8411-12 N/A Universal 100-240 VAC( ±10%) N/A Hazardous Locations (North America) (Sensor ONLY) N/A Teflon N/A Power Supply/Cond. Board in Fiberglass Enclosure with Lights N/A None, signal from transceiver is delivered to and processed by power supply/conditioning circuit board N/A -40 to 185 ºF-40 to 85 ºC N/A -40 to 158 ºF N/A Provided by power supply/conditioning PCB
17-8411-21 N/A Universal 100-240 VAC( ±10%) N/A Hazardous Locations (North America) (Sensor ONLY) N/A Ryton N/A Power Supply/Cond.Board Only N/A None, signal from transceiver is delivered to and processed by power supply/conditioning circuit board N/A -40 to 185 ºF-40 to 85 ºC N/A -40 to 158 ºF N/A Provided by power supply/conditioning PCB
17-8411-22 N/A Universal 100-240 VAC( ±10%) N/A Hazardous Locations (North America) (Sensor ONLY) N/A Ryton N/A Power Supply/Cond. Board in Fiberglass Enclosure with Lights N/A None, signal from transceiver is delivered to and processed by power supply/conditioning circuit board N/A -40 to 185 ºF-40 to 85 ºC N/A -40 to 158 ºF N/A Provided by power supply/conditioning PCB
17-8511-11 N/A 24 VDC (15-30 VDC acceptable) N/A Hazardous Locations (North America) N/A Teflon N/A N/A 4-20 mA output typical (full span may not be achieved; actual span is application dependent) Analog N/A -13 to 185 ºF-25 to 85 ºC N/A N/A 15-30VDC, 100mA max.
17-8511-21 N/A 24 VDC (15-30 VDC acceptable) N/A Hazardous Locations (North America) N/A Ryton N/A N/A 4-20 mA output typical (full span may not be achieved; actual span is application dependent) Analog N/A -13 to 185 ºF-25 to 85 ºC N/A N/A 15-30VDC, 100mA max.
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