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Model TXI7800 High Precision I/P Pressure Transducer
Brand: Fairchild Industrial Products
Designed for use in hazardous environments, the Rotork Fairchild TXI7800 series product is an explosion proof I/P pressure transducer.
It operates under the same principles as the T7800 product; however the TXI series includes NEMA 4X explosion proof construction.
Our design isolates the electronics chamber from the pneumatic section, thereby creating a safer and longer service life product, especially for applications handling natural gas.
In the Extended Range units, the TXI7800 series will also deliver up to 0-120 psi [0-8.0 BAR], (0-800 kPa) output.
The TXI7800 series is approved for hazardous use and carries FM. CSA, ATEX and IECEx approvals.
Features- 18 available output ranges
- Accuracy as low as 0.15%
- Field selectable outputs in three pressure ranges
- Field reversible feature
- Does not contain copper-based metals
- Optional version approved for use with Natural Gas or Industrial Methane supply media
- Explosion-proof NEMA 4X, IP65, Type 4 enclosure
- Canadian Registration Numbers (CRN) certifications
- FM, CSA, ATEX and IECEx approvals
Specifications
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
BSP Connection
- 1/4” BSPT Female
Cable Length
- 100 feet (30 metres)
- 19.69 feet (6 metres)
- 50 feet (15.2 metres)
Deadband, Approximate
- ≤ 0.02 % of Full Scale
Elastomers
- Nitrile
Electrical Connectors
- 1/2” NPT
Enclosure Finish
- Epoxy Powder-Coated
Enclosure, Body Material
- Chromate Treated Aluminum
Environmental Protection
- Explosion-proof
- Intrinsically Safe
- 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
- mA DC: 4-20
NPT Connection
- 1/4” NPT Female
Operating Temperature
- -40° to 71° C (-40° to 160° F)
Operating Voltages
- 2-Wire Current Input: 7.2 Vdc at 20 mA (4-20 mA Signal)
- 7.2 Vdc at 20 mA (4-20 mA Signal)
Orifice Material
- Brass
- Sapphire
Output Pressure
- psig: 0 to 120
- psig: 0 to 30
- psig: 0 to 60
- psig: 3 to 15
- psig: 3 to 27
- psig: 6 to 30
Position Effect
- 0.125 % at 90° & 0.25 % at 180° - for Extended Range
Relief
- Relieving
Repeatability
- ≤ 0.1 % of Full Scale
- ≤ 0.1 % of Full Scale for Extended Range
Reverse Polarity Protection
- No Damage Occurs from Reversal of Normal Supply Current (4-20 mA) or from misapplication of up to 60 mA
RFI/EMI Effect
- < 0.5 % of Span at 30 V/m Class 3 Band ABC (20-1,000 MHz) Per SAMA PMC 33.1 1978 & < 0.5 % of Span at 10 V/m Level, to 2 GHz Band Per EN 61,000-4-3: 1998 +A1 EMC Directive 89/336/EEC European Norms EN 61326
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, 50 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 3 to 27 psig (0.2 to 1.8 bar, 20 to 180 kPa), 32 to 120 psig (2.2 to 8 bar, 220 to 800 kPa)
- For Output Range psig: 3 to 15: psig: 20 to 120 (bar: 1.5 to 8, kPa: 150 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
- No Measurable Effect
Supply Voltage
- 3-Wire Voltage Input: 7.2-30 Vdc, less than 3 mA
Temperature Effect
- +0.5 % to +0.06 %/°F Temperature Change of Span Typical for Extended Range
Trim Material
- Brass
- Stainless Steel
- Zinc-Plated Steel
Vent
- Straight
- Tapped Exhaust
Vibration Effect
- < 1 % of Span Under the Following Conditions: 5 to 15 Hz at 0.8” Constant Displacement 15 to 500 Hz at 10 G's - Extended
