Pressure Transducers

AST4401 Intrinsically Safe Pressure Transmitter

AST4401 Intrinsically Safe Pressure Transmitter

The AST4401 is similar to the AST4400 intrinsically safe pressure transducer, but offers the additional approval for Groups A and B. The maximum supply voltage allowable is 15.5V DC.

Design Benefits
– Class I Division 1 Groups A, B, C, D Intrinsically Safe when installed with approved barrier (UL / CSA)
– ATEX / IECEx: Class I Zone 0 Exia IIC T4 Ga (Ta = -40°C to +80°C)
– Leading sensor technology available in 316L stainless steel, Hastelloy C276 or Inconel 718
– 4-20mA or voltage outputs

Applications / Industries
Factory automation systems
– Paint booths and sprayers
– Chemical processing plants
– Purfume processing facilities

Performance @ 25°C (77°F)

Accuracy1<±0.25% BFSL
<±0.5% BFSL for 7,500 & 10,000 PSI
Stability (1 Year)±0.25%FS, typ
Proof Pressure2X Rated Pressure
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 80°C (-40 to 176°F)
Storage -40 to 100°C (-40 to 212°F)
Thermal Limits
Compensated Range0 to 55°C (30 to 130°F)
TC Zero<±1.5% of FS
TC Span<±1.5% of 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 1-5VDC, 1-6VDC 0-50mV 0.5-4.5V Ratiometric
Excitation10-14.5VDC 10-14.5VDC 5VDC,typ 5VDC,reg
Output Impedance>10k Ohms <100 Ohms, Nominal 1100 Ohms, Nominal >100 Ohms, Nominal
Current Consumption20mA, typ. 5mA, typical <5mA 5mA, typical
Bandwidth(-3dB): DC to 250 Hz (-3dB): DC to 1kHz (-3dB): DC to 5kHz, min (-3dB): DC to 1kHz
Output Noise- <2mV RMS – <2mV RMS
Zero Offset<±1% of FS <±1% of FS <±2% of FS <±1% of FS
Span Tolerance<±2% of FS <±1.5% of FS <±2% of FS <±1.5% of FS
Output Load0-800 Ohms
@10-28VDC 10k Ohms, Min. >1M Ohms 10K Ohms, Min.
Reverse PolarityYes Yes – Yes