Fairchild Moisture-Resistant Electro-Pneumatic Transducer, Model TXI7850
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TFXI7850-425EN

Series: Model TXI7850 Moisture Resistant I/P Pressure Transducer Brand: Fairchild Industrial Products - by Rotork
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Fairchild Moisture-Resistant Electro-Pneumatic Transducer, Model TXI7850 Fairchild Moisture-Resistant Electro-Pneumatic Transducer, Model TXI7850 Fairchild Moisture-Resistant Electro-Pneumatic Transducer, Model TXI7850 Fairchild Moisture-Resistant Electro-Pneumatic Transducer, Model TXI7850 Fairchild Moisture-Resistant Electro-Pneumatic Transducer, Model TXI7850 Fairchild Moisture-Resistant Electro-Pneumatic Transducer, Model TXI7850 Fairchild Moisture-Resistant Electro-Pneumatic Transducer, Model TXI7850 Fairchild Moisture-Resistant Electro-Pneumatic Transducer, Model TXI7850
  • Underwriting Group - FM - Factory Mutual
  • Temperature Range - -40° to 71° C (-40° to 160° F)
  • Input - 4-20 mA
  • Outputs - kPa: 0 to 400
  • Exhaust Port - Tapped Exhaust
  • Approval Class - Natural Gas Media Approved
  • Port Thread - NPT
  • Cable Length - 10 feet Standard

Specifications

Brand

Accuracy

  • 0.15% of Full Scale Typical ISA S51.1
  • 0.25% of Full Scale Guaranteed ISA S51.1

Air Consumption

  • Maximum

Approvals & Certifications

  • Natural Gas Media Approval, Group D Gases

Approvals & Certifications

  • ATEX
  • CE
  • CSA
  • FM
  • IEC Ex

BSP Connection

  • 1/4" BSPT Female

Cable Length

  • 100 feet (30 meters)
  • 19.69 feet (6 meters)
  • 50 feet (15.2 meters)

Deadband, Approximate

  • ≤ 0.02% of Full Scale

Elastomers

  • Nitrile

Electrical Connectors

  • 1/2" NPT

Electromagnetic Interference Effect

  • EMC Directive 89/336/EEC European Norms EN 61326

Enclosure Finish

  • Epoxy Powder-Coated

Enclosure, Body Material

  • Chromate Treated Aluminum

Environmental Protection

  • Explosion-proof
  • Intrinsically Safe
  • IP56
  • IP66
  • NEMA 4X

Exhaust Capacity - Relieving Units Only

  • 2 scfm (3.4 m³/hour)

Flow Rate

  • 11 scfm (18.7 m³/hour) at psig: 150 (bar: 10, kPa: 1,000) Supply & Midscale Output - Extended Range
  • 2.5 scfm (4.25 m³/hour) at psig: 25 (bar: 1.7, kPa: 170) Supply & psig: 9 (bar: 0.6, kPa: 60) Output
  • 9 scfm (15.3 m³/hour) at psig: 120 (bar: 8, kPa: 800) Supply & psig: 9 (bar: 0.6, kPa: 60) Output

Frequency

  • -3 Db at 2 Hz Per ISA S26.4.3.1 Load Configuration A - Extended Range
  • -3 Db at 5 Hz Per ISA S26.4.3.1 Load Configuration

Hysteresis

  • ≤ 0.1% of Full Scale
  • ≤ 0.25% of Full Scale to for Extended Range

Input

  • 4-20 mA

NPT Connection

  • 1/4" NPT Female

Operating Temperature

  • -40° to 71° C (-40° to 160° F)

Operating Voltages

  • 7.2 Vdc at 20 mA (4-20 mA Signal)

Orifice Material

  • Aluminum
  • Sapphire

Output Pressure

  • bar: 0 to 8
  • kPa: 0 to 800
  • psig: 0 to 120

Position Effect

  • 0.125% at 90° & 0.25% at 180° - for Extended Range

Relief

  • Relieving

Repeatability

  • ≤ 0.1% of Full Scale

Signal Impedance

  • 3-Wire Voltage Input: 10 Kilohms

Span - Minimum

  • For Output Range 0 to 120 psig: 50 psig (3 bar, 300 kPa) to Extended Range
  • For Output Range 0 to 30 psig: 12.5 psig (0.85 bar, 85 kPa) to Extended Range
  • For Output Range 0 to 60 psig: 25 psig (1.5 bar, 150 kPa) to Extended Range
  • For Output Range psig: 3 to 15 - psig: 5 (bar: 0.35, kPa: 35)
  • For Output Range psig: 3 to 27 - psig: 10 (bar: 0.7, kPa: 70)
  • For Output Range psig: 6 to 30 - psig: 10 (bar: 0.7, kPa: 70)

Storage Temperature

  • -40° to 82° C (-40° to 180° F)

Supply Pressure

  • For Output Range 0 to 120 psig: 125 to 150 psig (8.8 to 10 bar, 880 to 1,000 kPa) to Extended
  • For Output Range 0 to 30 psig (0 to 2 bar, 0 to 200 kPa): 35 to 150 psig (2.4 to 10 bar, 240 to 1,000 kPa) to Extended
  • For Output Range 0 to 60 psig: 65 to 150 psig (4.6 to 10 bar, 460 to 1,000 kPa) to Extended
  • For Output Range psig: 3 to 15: psig: 20 to 120 (bar: 1.5 to 8, kPa: 150 to 800)
  • For Output Range psig: 3 to 27: psig: 32 to 120 (bar: 2.2 to 8, kPa: 220 to 800)
  • For Output Range psig: 6 to 30: psig: 35 to 120 (bar: 2.4 to 8, kPa: 240 to 800)

Supply Pressure Effect

  • less than 0.1 psig (0.7 kPa, 0.007 bar) Change for 10 psig (0.7 kPa, 0.007 bar) Supply Change - for Extended Range

Supply Voltage

  • 3-Wire Voltage Input: 7.2-30 Vdc, less than 3 mA

Temperature Effect

  • +0.5% to +0.04% / °F Temperature Change of Span Typical
  • +0.5% to +0.06% / °F Temperature Change of Span Typical for Extended Range

Trim Material

  • Stainless Steel
  • Zinc-Plated Steel

Vent

  • Straight
  • Tapped Exhaust

Vibration Effect

  • ± 1% of Span Under the Following Conditions: 5 to 15 Hz at 0.75" Constant Displacement 15 to 500 Hz at 10 G's

Documentation

Data Sheets

Application Considerations

Catalogs

Certifications & Approvals

Installation Instructions

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