Arjay Engineering Ltd.

- Model 4100-HCF - Floating Oil Thickness Monitor



Continuous monitoring of separated oil thickness on a water surface. The 4100-HCF monitors a floating sensor on the water surface to indicate the thickness of separated oil. An LCD display of the thickness, analog output and relay alarms are standard. The 4100-HCF float sensor monitors the capacitance field of the water surface. As the oil accumulates on the surface, the sensor capacitance changes. This interface signal is used to provide outputs, displays and relay control.

Optional Interfaces

  • Analog Output 4-20 mA non-isolated
  • Communication RS-485 Modbus

  • No moving parts
  • Remote electronics via standard twisted pair
  • All set-up, calibration and diagnostics is at the control panel
  • All control wiring and interface is at the control panel
  • HF capacitance technology does not require routine cleaning
  • Touch screen interface for easy set-up and user interface
  • Sump view display for ease of reading
  • Trend display of hour, day or month increments
  • Single point calibration
  • Relays for valve control, alarms and pump run-time
  • Unique capacitance approach eliminates routine cleaning
  • Control and interface panel mounts safely away from the process

  • Operating Temp. 0˚C to +55˚C
  • Resolution .007% (.07 pF at 1,000 pF)
  • Accuracy .04% of full scale pF
  • Power Input 24 vdc or 80-240 vac +/-10%, 1P, 50-60 HZ
  • Display touch screen full colour sump view graphics,
  • % and engineering units of oil
  • selectable trend line view or none
  • Relay Outputs four SPDT, 10 amp @ 240 vac, dry Pump relay has a discrete run time with level re-set
  • Enclosure Type 4 metal painted blue / IP 66
  • optional Type 4X SS or polycarbonate
  • Approvals to UL / CSA / CE
  • IEC 61010

  • Style #A00083 0 to 25 mm (0-2”) oil thickness range
  • Style #A00525 0 to 300mm (0-12”) oil thickness range
  • Process Temp. 0˚C to +55˚C
  • Ambient Temp. -60˚C to +55˚C
  • Intrinsic Safety Approved Intrinsically Safe when ordered with Approved Barrier in Control Unit
  • CAN/CSA E60079-11:
  • Class I, Groups A,B,C,D;
  • Class II, Groups E,F,G;
  • Class III, Encl.Type 4
  • CRN ABSA-CRN #OF07450.2
  • Wetted Parts 304SS, PVC and Teflon

Optional probe materials are eligible for NACE MR-0175 Compliance

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