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Model K8 Pressure Transducer

Brand: Ashcroft Inc

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The Ashcroft K8 is a proven pressure transducer incorporating polysilicon thin film technology.

Modern low-pressure chemical vapor deposition methods provide simple, stable molecular bonds between metal diaphragm and a polysilicon strain gage bridge.

There are no epoxies or bonding agents to contribute to signal instability or drift. The K8 is offered in many standard pressure ranges with high quality millivolt output.

Signal output is proportional to supply voltage, and sensitivity varies between 6 to 18 mV/V at full scale.

Transducer performance is directly traceable to the National Institute of Standards and Technology.
Features
  • 0.5% and 1% accuracy 
  • psi: 45 to 20,000 (kPa: 310.3 to 137,900, bar: 3.1 to 1,379) pressure ranges 
  • Superior long-term stability and repeatability 
  • Wide range of pressure and electrical connections available 
  • Miniature size and light weight 
  • Millivolt output
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The Ashcroft K8 is a proven pressure transducer incorporating polysilicon thin film technology.

Modern low-pressure chemical vapor deposition methods provide simple, stable molecular bonds between metal diaphragm and a polysilicon strain gage bridge.

There are no epoxies or bonding agents to contribute to signal instability or drift. The K8 is offered in many standard pressure ranges with high quality millivolt output.

Signal output is proportional to supply voltage, and sensitivity varies between 6 to 18 mV/V at full scale.

Transducer performance is directly traceable to the National Institute of Standards and Technology.
Features
  • 0.5% and 1% accuracy 
  • psi: 45 to 20,000 (kPa: 310.3 to 137,900, bar: 3.1 to 1,379) pressure ranges 
  • Superior long-term stability and repeatability 
  • Wide range of pressure and electrical connections available 
  • Miniature size and light weight 
  • Millivolt output
1 model matching criteria
  • Accuracy - ± 0.5%, ± 0.014%/°F
  • Pressure Connection - No Pressure Connection
  • Sensitivity - Output: mV/V
  • Electrical Termination - 4" Leads
  • Pressure Range - psi: 0 to 45
Out of Stock

Specifications

Tube Connection

  • 1/4” Compression Fitting

Materials of Construction

  • Socket: 300 Series Stainless Steel

Shock

  • < ± 0.05 % of Full Scale Effect for 100 G, 20 milliseconds in any Axis

Excitation Voltage

  • 3-10 Vdc Regulated

Operating Temperature

  • -28° to 82° C (-20° to 180° F)

Current

  • Supply Current: 1.4 mA (Nominal)

SAE Connection

  • 7/16”-20 SAE Male

Zero Offset

  • ± 3 mV/Vdc

Accuracy

  • ± 0.5 % of Span
  • ± 1 % of Span

UNF/UNC Connection

  • 7/16-18 UNF

Resistance

  • Bridge Resistance: 3,500 ohms (Nominal)

Cone & Thread Connection

  • 1/4” AMINCO Female

Non-Linearity

  • ± 0.25 % of BFSL
  • ± 0.4 % of BFSL

Response Time

  • < 5 milliseconds

Diaphragm Material

  • 630 Stainless Steel (17-4 PH)

Output

  • Output (Sensitivity): Varies from 6-18 mV/V at Full Scale Depending Upon Pressure Range

Stability

  • ± 0.5 % of Span/Year

Pressure Range

  • bar: 0 to 1,379
  • kPa: 0 to 137,900
  • psi: 0 to 20,000

Proof Pressure

  • 120 % of Full Scale of psi: 7,500 to 20,000 (kPa: 51,711 to 137,895, bar: 517.1 to 1,379)
  • 150 % of Full Scale of psi: 3,000 to 5,000 (kPa: 20,684 to 34,474, bar: 206.8 to 344.7)
  • 200 % of Full Scale of psi: 45 to 2,000 (kPa: 310.3 to 13,970, bar: 3.1 to 137.9)

Storage Temperature

  • -54° to 121° C (-65° to 250° F)

NPT Connection

  • 1/4” NPT Female
  • 1/4” NPT Male
  • 1/8” NPT Female
  • 1/8” NPT Male

Approvals & Certifications

  • CRN
  • UL

Humidity

  • 95 % Relative Humidity, Non-Condensing

Span & Zero Effect

  • Accuracy Class 0.5 %: ± 0.014 % of Span/°F
  • Accuracy Class 0.5 %: ± 0.028 % of Span/°F
  • Accuracy Class 1 %: ± 0.04 % of Span/°F

Vibration Effect

  • Vibration Sweep: < ± 0.1 % of Full Scale for 0 to 2,000 Hz at 20 G's in any axis

Termination

  • 36” Cable, Shielded, PVC Sheathing
  • 4” Polyethylene Coated, 30 AWG

Burst Pressure

  • 150 % of Full Scale of psi: 7,500 to 20,000 (kPa: 51,711 to 137,895, bar: 517.1 to 1,379)
  • 300 % of Full Scale of psi: 3,000 to 5,000 (kPa: 20,684 to 34,474, bar: 206.8 to 344.7)
  • 800 % of Full Scale of psi: 45 to 2,000 (kPa: 310.3 to 13,970, bar: 3.1 to 137.9)

Insulation Resistance

  • 100 megaohms at 50 Vdc

Compensated Temperature

  • -28° to 82° C (-20° to 180° F)

Position Effect

  • < 0.01% of Full Scale

Typical Applications

  • Compressors
  • Construction Equipment
  • Control Valves
  • General-purpose Industrial Process Applications
  • Hand Tools
  • HVAC Equipment
  • Hydraulic Applications
  • Machine Tools
  • Medical
  • OEM Applications