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4080/4480 Pneumatic Transmitter

Brand: Ashcroft Inc

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Providing plus-values which will coordinate key functional areas in your plant, this Ashcroft pneumatic transmitter serves pressure applications throughout all industries.

A positive report of process fluid and media performance is provided at designated operational check points by a signal accurately transmitted with maximum efficiency, assuring operating economies and safety.

The Ashcroft transmitter is a self-nulling motion-balance instrument, using a pneumatic relay operating on the non-bleed force balance principle for converting input pressures into proportional low air pressure signals for transmittal to remote indicators or controllers.
Features
  • Transmission distance: 1000 feet
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Providing plus-values which will coordinate key functional areas in your plant, this Ashcroft pneumatic transmitter serves pressure applications throughout all industries.

A positive report of process fluid and media performance is provided at designated operational check points by a signal accurately transmitted with maximum efficiency, assuring operating economies and safety.

The Ashcroft transmitter is a self-nulling motion-balance instrument, using a pneumatic relay operating on the non-bleed force balance principle for converting input pressures into proportional low air pressure signals for transmittal to remote indicators or controllers.
Features
  • Transmission distance: 1000 feet
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1 model matching criteria
TYPE 4080/4480
  • Type - 4080 (Indicating)
  • Bourdon Tube Material - 316 Stainless Steel
  • Output - psi: 3 to 15 (kPa: 20.6 to 103.4, bar: 0.2 to 1)
  • Process Connection - 1/2" Male NPT Lower
  • Process Pressure - Inches Hg: -30 to 0, psi: 0 to 30
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Specifications

Brand

Accuracy

  • ± 0.5 % of Span - 4480
  • ± 1 % of Span - 4080

Air Consumption

  • 0.1 scfm (2.8 L/minute)

Air Supply

  • psi: 18 to 20 (kPa: 124.1 to 137.9, bar: 1.241 to 1.379) for 3-15 psi Range
  • psi: 30 to 35 (kPa: 206.8 to 241.3, bar: 2.068 to 2.413) for 3-27 psi Range

Approvals & Certifications

  • ISO 9001

Distance

  • Transmission Distance: 1,000 feet (304.8 metres)

Element

  • Input Sensing Element Material: 316 Stainless Steel

Materials of Construction

  • Bourdon Tube: 316 Stainless Steel

NPT Connection

  • 1/2” NPT Male (Lower)
  • Air: 1/4” NPT Female

Output

  • bar: 0.2 to 1.86
  • kPa: 20.68 to 186.2
  • psi: 3 to 27

Pressure Range

  • bar: 0 to 1,379
  • Inches Hg: -30 to 0
  • kPa: 0 to 137,900
  • psi: 0 to 20,000

Pressure Type

  • Compound Pressure
  • Gauge
  • Vacuum

Repeatability

  • 0.15 % of Span

Sensitivity

  • ± 0.001 % of Span - 4480
  • ± 0.1 % of Span - 4080

Temperature Effect

  • Ambient Temperature Effect: 1/2 % Per 27.8° C (50° F)

Time Constant

  • Speed of Response: 4 seconds Per 500 feet of Tubing
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Typical Applications

  • System Measurements & Control
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