Capacitance Probe with Auto Calibration


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Using a special magnet, the Pro Auto-Cal offers simple, automatic calibration and external testing without removing the cover of the unit. With unsurpassed sensitivity and fail-safe performance, the Pro Auto-Cal allows for temperature-stable calibration and an adjustable time delay of up to 10 seconds to allow for settling of material–virtually eliminating false alarms. Optional sensing probes including Delrin or Teflon-sleeved, bare, food grade, or flush mount. A variety of solid and flexible extensions make this capacitance probe suitable for many applications.

  • Point level detection and process control for solid, liquid, and slurry materials
  • Used in bins, vessels, tanks, chutes, and conveyors where low voltage DC power is necessary
  • Plastics, chemicals, coal, fly ash, concrete, food ingredients, pharmaceuticals, feed, grain, mining, foundries, wood or paper processing, many other materials
  • Auto-calibration and external test
  • Unsurpassed sensitivity 0.5 pF
  • PRO-Shield compensates for material buildup
  • Operates below RF range, temperature stable calibration and protection from RF interference
  • Fail-safe, switch selectable high/low
  • Adjustable time delay to 10 seconds
  • Optional sensing probes: Delrin or Teflon sleeved, bare, food grade, flush mount, solid and flexible extensions
  • Visual LED indicates sensor status: uncovered, covered or power failure

Power Requirements: 115/230 VAC, 50/60 Hz ±15%, 5 VA

Output Relay: DPDT 10 Amp at 250 VAC

Ambient Temp: -40°F to +185°F (-40°C to +85°C)

Process Temp: To 250°F Delrin/bare probe (121°C); to 500°F Teflon probe (260°C)

Pressure: 500 PSI

Approvals & Certifications: Listed for Class II, Groups E, F & G Hazardous Locations

Enclosure Type: NEMA 4X, 5, 9 & 12

Housing Enclosure: Die cast aluminum, USDA approved powder coat finish

Mounting: 1-1/4” NPT or 3/4” NPT 316 stainless steel standard; 1-1/4” NPT 316 stainless steel & sanitary flange optional

Capacitance Product Line Brochure

Capacitance Probe Product Listing

Bulk Density Chart

PRO Auto-Cal LV Manual