Model K1 Pressure Transmitter

Brand: Ashcroft Inc
Does not ship to United States

The Ashcroft K1 is a proven and versatile pressure transducer/transmitter incorporating polysilicon thin film technology.

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

There are no epoxies or bonding agents to contribute to signal instability or drift. The integral metal diaphragm and polysilicon bridge are virtually unaffected by shock, vibration or mounting.

These transmitters are offered in many standard pressure ranges with either current or voltage output signals.

Transmitter performance is directly traceable to the National Institute of Standards and Technology.

A calibration test certificate is available with each transmitter.
Features
  • 0.5% and 1% accuracy 
  • Vacuum 20,000 psi pressure range 
  • FM approved (optional) 
  • Superior long-term stability and repeatability 
  • Stainless steel NEMA 4X enclosure 
  • Current/voltage output 
  • Wide range of electrical connections available 
  • Optional panel meter digital display 

Specifications

Pressure Range

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

Storage Temperature

  • -54° to 121° C (-65° to 250° F)

SAE Connection

  • 7/16”-20 SAE Male

Pressure Cycles

  • Durability: 10⁸ Cycles 20 / 80 % of Span with Negligible Performance Change

Electrical Protection

  • Reverse Polarity

Span & Zero Effect

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

Operating Temperature

  • -28° to 82° C (-20° to 180° F)

Enclosure, Body Material

  • 300 Series Stainless Steel
  • Stainless Steel

Output

  • 1-11 Vdc, 3-Wire
  • 1-5 Vdc, 3-Wire
  • 1-6 Vdc, 3-Wire
  • 4-20 mA, 2-Wire

UNF/UNC Connection

  • 9/16”-18 UNF Female 2B AMINCO

Burst Pressure

  • 150 % to 800 % of Full Scale

Shock

  • 100 G, 20 milliseconds Shock in Any Axis

Position Effect

  • < 0.01 % of Full Scale

Accuracy

  • ± 0.5 % of Span
  • ± 1 % of Span

Vibration Effect

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

NPT Connection

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

Pressure Type

  • Compound Pressure
  • Gauge

Electrical Connectors

  • 1/2” NPT Male Conduit with 36” Cable Leads
  • 4-Pin Bendix
  • 6-Pin Bendix
  • Hirschmann Miniature
  • No. 24 AWG, 36” PVC, Shielded

Compensated Temperature

  • -28° to 71° C (-20° to 160° F)

Non-Linearity

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

Approvals & Certifications

  • FM
  • UL

Power Requirement

  • 10-36 Vdc Unregulated, < 3 mA for Voltage Output

Stability

  • ± 0.5 % of Span/Year

Proof Pressure

  • 120 % to 200 % of Full Scale

Environmental Protection

  • IP10
  • IP66
  • NEMA 1
  • NEMA 4X

Display

  • Digital Display

Diaphragm Material

  • 630 Stainless Steel

Humidity

  • 95 % Relative Humidity, Non-Condensing

Response Time

  • < 5 milliseconds

  • Construction Equipment
  • General-purpose
  • HVAC Equipment
  • Hydraulic Applications
  • Industrial Applications
  • Machine Tools
  • Medical Equipment
  • Pump Control
  • Refrigerators
  • Test & Measurement
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