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Thin
Film Pressure Transducer Ashcroft Model K2
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Thin
Film Pressure Transducer Ashcroft
Model K2
• Superior long-term stability and repeatability
• Stainless steel NEMA 4X enclosure
• Millivolt output
• Wide range of pressure and electrical connections
available
Thin Film Pressure Transducer Ashcroft®
Model K2 transducer introduces the benefits of polysilicon
thin film performance at affordable prices. Modern low-pressure
chemical vapor deposition methods provide simple, stable
molecular bonds between a proven metal diaphragm and a
polysilicon strain gage bridge. There are no epoxies or
bonding agents to contribute to signal instability or
drift.
The polysilicon strain resistors combine very low noise
levels with very high signal output.There are no semiconductor
(p-n) junctions to change with temperature, time or use.
The integral metal diaphragm and polysilicon bridge are
virtually unaffected by shock, vibration or mounting.
Thin Film Pressure Transducer Ashcroft®
Model K2 are offered in many standard pressure ranges
with high-quality millivolt output signal ratiometric
to supply voltage.Transducer performance is directly traceable
to the National Institute of Standards and Technology
and specifications are conservatively stated. A calibration
test certificate is available with each transducer.
Standard Ranges (psi)
0/15* 0/300 0/5000* vac./60* 0/30* 0/500 0/7500* vac./45*
0/60* 0/750 0/10,000* vac./30* 0/100 0/1000 0/15,000*
vac./15* 0/150 0/2000 0/20,000* vac./0*
0/200 0/3000
1% accuracy ranges only.
Consult factory for nonstandard ranges.
Accuracy Class (F.S.):
0.5%, 1%
Nonlinearity Terminal point* ±0.4 ±0.7 Best
fit straight line(BFSL) ±0.25 ±0.4
Hysteresis ±0.15 ±0.2
Nonrepeatability ±0.05 ±0.07
Interchangeability ±0.5% ±1.0%
*Including hysteresis
Durability:
108 cycles 20/80%F.S. with negligible
performance change
Stability:
±0.5% F.S./yr
Temperature Limits:
Storage: –65/+250°F
Operating: –20/+180°F
Compensated –20/+160°F
Thermal Coefficients: (68°F ref.) %F.S./°F
Standard:
0.5% 1% ZERO ±0.028% ±0.04% SPAN
±0.028% ±0.04%
Optional:
ZERO ±0.014% N/A
SPAN ±0.014% N/A
Multiply zero thermal coefficients by 1.5 on 0/30
psi range and by 3 and 0/15 and vac/0 ranges
Humidity:
No performance effect at 95% relative humidity –
noncondensing
Model K2 Thin Film
Pressure Transducer 
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