Pressure Transducers

AST20HA Precision Pressure Transducers

AST20HA Precision Pressure Transducers

The AST20HA is a digitally compensated 0.1% pressure transducer / pressure transmitter that offers high performance over temperature. Krystal Bond Technology alone offers excellent non-linearity and non-repeatability performance. When it is combined with the ASIC, the AST20HA steps into its own league of high performance pressure sensing at an affordable price.

CE American Bureau of Shipping Type Approval
Design Benefits
– Krystal Bond Technology ™
– ASIC Compensation
– Temperature Performance
– Real Time thermal compensation
– Real Time linearity correction
– Turndown capability

Applications / Industries
Aerospace Hydraulic and Pneumatic Pressure Systems
– Analytical Instruments
– Hydraulic Pressure Equipment
– Hydrogen Pressure*
– Laboratory / Metrology Equipment
– Medical
– Military Vehicles
– Test Stands

Performance @ 25°C (77°F)

Accuracy1<±0.1% BFSL(<±0.2% BFSL over 15,000 PSI)
Stability (1 Year)±0.1% FS, typical
Proof Pressure2X Rated Pressure, standard (For higher proof pressures, contact factory)
Burst Pressure5X or 20,000 PSI, whichever is less
Pressure Cycles>100 Million
1 Accuracy includes: Non-linearity, Hysteresis and Non-repeatability

Environmental Data

Operating-40 to 85°C (-40 to 185°F)
Storage-50 to 125°C (-58 to 257°F)
Thermal Limits
Compensated Range0-70°C (32 to 158°F)
TC Zero<±0.5% FS
TC Span< ±0.5% FS
ShockEN 60068-2-27
VibrationEN 60068-2-6, 60068-2-64,
and IEC 68-2-32
EMI/RFI ProtectionYes

Electrical Data

Output Signal4-20mA 1-5V, 0-5V 1-10V, 0-10V 0.5-4.5V Ratiometric
Excitation10-28 VDC 10-28 VDC 15-30 VDC 5VDC, Regulated
Current Consumption- <10mA <10mA <10mA
Output Noise<1mV, RMS <1mV, RMS <1mV, RMS <1mV, RMS
Zero Offset<±0.5% FS <±0.5% FS <±0.5% FS <±0.5% FS
Span Tolerance<±0.5% FS <±0.5% FS <±0.5% FS <±0.5% FS
Output Load0-800 Ohms@10-28 VDC 5k Ohms, min. 5k Ohms, min. 5k Ohms, min.
Reverse PolarityYes Yes Yes Yes
Sampling Rate400Hz 400Hz 400Hz 400Hz