Thin Film Pressure Transducers Ashcroft Model K2

• Thin Film Pressure Transducers, Aschroft, Model K2Superior 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

Thin Film Pressure Transducers, Aschroft, Model K2 Model K2 Thin Film Pressure Transducer


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