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NIVOCAP CK RF-Capacitance Level Switch

Brand: Nivelco Process Control Co.

The NIVOCAP CK-100 series new generation capacitance level switches unlike the traditional capacitive principle they operate as capacitance meters in the RF (radio-frequency) range. 

The most advantageous feature of this technique is that the instrument has great build-up immunity, therefore the NIVOCAP CK-100 is an excellent choice for those adhering, sticky substances where the rival vibrating or the other contacting measurement technologies are not applicable.

The mechanical construction consists of a stainless steel probe and a reference probe between two insulations. 

The intelligent microcontroller based electronics of the NIVOCAP CK evaluates continuously the voltage level proportional to the capacitance difference between the two probes and the housing. 

This way it provides more stabile measurement compared to the Analog capacitance switches.

The units are available only with paint coated Aluminum housing, because one reference point of the measurement is the housing itself. 

An insulated section of the probe called the guard-ring allows that the material build-ups on the probe can be ignored preventing false switching. 

The maximal probe length of the NIVOCAP CK series is 3 meters (10 feet) in case of the rod extended types and the cable extended versions can be ordered up to 10 meters (33 feet) probe length.

The high temperature and the Dust-Ex approved models are suitable for using in harsh environments so they can be ideal choice for power generation applications.

Specifications

Ambient Temperature Range

  • -30° to 65° C (-22° to 149° F)

Approvals & Certifications

  • ATEX Ex II 1 G EEx ia IIB T6
  • BKI
  • CE 1418
  • RoHS

BSP Connection

  • 1” BSP Male
  • 1-1/2” BSP Male
  • 3/4” BSP Male

Cable Material

  • Polyethylene Coating - Cable Extended Model

Capacitance

  • 0.5 to 18 PF

Class

  • Electrical Protection: Class I

Consumption

  • Power: ≤ 2.5 VA / 2 W

Display

  • Calibration LED

Electrical Connectors

  • 0.5 to 1.5 mm² (20 to 15 AWG)
  • 1/2” NPT Female
  • M20 x 1.5 Plastic Cable Glands
  • Terminal Block

Electrical Contacts

  • Normally Closed
  • Normally Open

Electrical Protection

  • Output (Electronic): Overcurrent & Overload Protection
  • Output (Electronic): Overvoltage

Enclosure, Body Material

  • Paint Coated Aluminum

Environmental Protection

  • Explosion-proof
  • IP67

Indication

  • Status LED

Mounting

  • Side Mounting

NPT Connection

  • 1” NPT Male
  • 1-1/2” NPT Male
  • 3/4” NPT Male

Operating Pressure

  • psig: 43.5 (kPa: 300, bar: 3) - Max.

Operation

  • Fail-safe

Output

  • Electronic (SPST): 2 A at 250 Vac/dc
  • Relay (SPDT): 8 A at 250 Vac

Power Supply

  • 20-255 Vac/dc

Process Temperature

  • -25° to 90° C (-13° to 194° F) - Cable Extended Model
  • -30° to 110° C (-22° to 230° F) - Standard, Rod Extension Model
  • High Temperature Typical: -30° to 235° C (-22° to 455° F) - Standard, Rod Extension Model

Response Time

  • Selectable: 0.15 to 15 seconds

Sensor, Probe Length

  • 1.3 to 2 feet (0.39 to 0.60 metres) - Standard Model
  • 2.3 to 10 feet (0.70 to 3.04 metres) - Rod Extended Model
  • 3.3 to 33 feet (1 to 10.06 metres) - Cable Extended Model

Sensor, Probe Material

  • Probe: 316Ti Stainless Steel + PPS Insulation

Switch Type

  • Fail-safe Mode: Selectable with DIP Switches
  • SPDT
  • SPST

Wetted Materials

  • 316Ti Stainless Steel, 1.4542

  • Food Industry
  • Pharmaceutical
  • Power Generation Processes
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