NTB Deep-Well Probe

Brand: KOBOLD Instruments, Inc.

The immersion probe comprises a measuring cell, two wire transmitter and a special cable with capillary tube. The housing comprises stainless steel with a pressure-sensitive diaphragm that is protected with a stainless steel cap.

The level signal is determined by the pressure difference between the water column over the probe and atmospheric pressure which is transferred to the probe through the capillary tube.

This differential pressure is converted to a 0 to 4 mA Analog signal by the piezo-resistive cell and the fitted electronics.

Specifications

Cable Length

  • 0 to 984.25 feet (0 to 300 metres)

Cable Material

  • Polyurethane

Cap Material

  • 316Ti Stainless Steel

Capillary Material

  • PVC - Capillary Tube

Communication

  • HART

Dimensions

  • Ø 0.86" × 6.8" (Ø 22 × 173 mm) - Probe

Electrical Connectors

  • 0.34 mm² Wire Cross Section

Enclosure / Body Material

  • Stainless Steel

Environmental Protection

  • IP20
  • IP54
  • IP68

Linearization

  • ± 0.25 %

Loop Resistance

  • 13 ohms ± 10 % - Series Resistor

Maximum Voltage

  • 30 V Peak-to-Peak (Peak Value) - Fast
  • 90 V Peak-to-Peak (Peak Value) - Slow

Media

  • Water

Mounting

  • DIN Rail Mounting
  • Field Mounting

Operating Temperature

  • -10° to 60° C (14° to 140° F)

Output

  • 2-Wire
  • 4-20 mA / HART

Power

  • 12-30 Vdc - Auxiliary
  • 600 W Per 1 milliseconds - Pulse

Pressure Range

  • bar: 00 to 19.6
  • Inches WC: 0 to 7,874
  • kPa: 00 to 1,960
  • psi: 00 to 284.3

Seat / Seal Material

  • Seal: FPM

Sensor / Probe Material

  • 316 Stainless Steel - Sensor
  • 316Ti Stainless Steel - Probe

Temperature Effect

  • ± 0.1 %/10 K

Documentation

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