NGM Guided Radar Level Transmitter

Brand: KOBOLD Instruments, Inc.

NGM uses TDR (Time Domain Reflectometry) technology, which is also known as Guide Microwave or Guided Wave Radar. This means that low-energy and high-frequency electromagnetic impulses, generated by the sensor's circuitry, are propagated along the probe which is immersed in the liquid or solid to be measured.

When these impulses hit the surface of the media, part of the impulse energy is reflected back up the probe to the circuitry which then calculates the level from the time difference between the impulses sent and the impulses reflected.

The sensor can output the analyzed level as 4-20 mA Analog output, or it can convert the values into freely programmable switching output signal.

Specifications

Accuracy

  • ± 3 mm
  • 0.03%

Ambient Temperature Range

  • -25° to 80° C (-13° to 176° F)

Applications

  • Bypass Chambers
  • Stilling Wells
  • Storage Tanks

Approvals & Certifications

  • ATEX
  • CE
  • Ex
  • SIL

BSP Connection

  • G 3/4" Male

Cable Entry

  • 2 × M20×1.5

Current

  • < 200 mA - Load Current

Electrical Rating

  • < 50 mA at 24 Vdc - Current Consumption

Enclosure / Body Material

  • 304L Stainless Steel
  • 316L Stainless Steel
  • Aluminum Alloy
  • Epoxy Coated

Environmental Protection

  • IP68

Flange Size - 1-1/2" (DN 40)

  • 1-1/2" (DN 40) - 150# ASME
  • 1-1/2" (DN 40) - PN 40

Flange Size - 2" (DN 50)

  • 2" (DN 50) - 150# ASME
  • 2" (DN 50) - PN 40

Flange Size - 2-1/2" (DN 65)

  • 2-1/2" (DN 65) - 150# ASME

Flange Size - 3" (DN 80)

  • 3" (DN 80) - ASME B16.5 Class 150
  • 3" (DN 80) - PN 40 B1

Flange Size - 4" (DN 100)

  • 4" (DN 100) - ASME B16.5 Class 150
  • 4" (DN 100) - PN 16 B1

Gasket Material

  • Klinger SIL C-4400

Length

  • Maximum

Load

  • < 500 ohms - HART Resistor
  • 250 ohms

Materials of Construction

  • 316 Stainless Steel
  • 316L Stainless Steel
  • 316Ti Stainless Steel
  • 321 Stainless Steel
  • PEEK
  • PTFE

Maximum System Pressure

  • psi: 580.2 (kPa: 4,000, bar: 40)

Media

  • Liquids
  • Solids

Mounting Position

  • Vertical

NPT Connection

  • 3/4" NPT Male

O-Ring Material

  • Ethylene Propylene (EPR)
  • FKM
  • NBR

Output

  • 4-20 mA

Output Function

  • Normally Closed
  • Normally Open

Pressure Range

  • bar: -1 to 40
  • kPa: -100 to 4,000
  • psi: -14.5 to 580

Process Temperature

  • -40° to 150° C (-40° to 302° F)

Repeatability

  • < 0.079" (< 2 mm)

Resolution

  • 0.04" (1 mm)

Response Time

  • 0.5 second

Sensor / Probe Diameter

  • 0.15" (4 mm) - Wire Rope
  • 0.23" (6 mm) - Single Rod
  • 0.67" (17.2 mm) - Coaxial

Sensor / Probe Length

  • 3.94" to 787.4" (100 to 20,000 mm)

Storage Temperature

  • -40° to 85° C (-40° to 185° F)

Supply Voltage

  • 0 to 2 V - Low to High Signal Voltage
  • 12-30 Vdc

Switch Type

  • PNP

Temperature Range

  • -200° to 250° C (-328° to 482° F)

Thermal Drift

  • < 0.2 mm/K

Update Time

  • < 6 seconds

Show More