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AST4900

Pressure Sensor - High Purity Media Isolated

AST4900 high purity electropolished pressure sensor product photo

The AST4900 is a media isolated high purity pressure sensor intended for the measurement of liquids and gases. Utilizing Krystal Bond™ Technology, each sensor is free of oil-fill, welds and internal O-rings, all of which eliminate the risk of system contamination. This one-piece design also promotes high cyclical life, high shock and vibration capability and will maintain long-term stability, even in extreme conditions.

Datasheet
w/ Dimensions

Accessories

Benefits

- Krystal Bond Technology ™
- All 316L High Strength Stainless Steel Construction
- No Oil, Welds, or Internal O-rings
- Wide Operating Temperature Range
- UL/cUL508 Approved
- CE EN61326 Certified

Applications

- Gas Panels and Manifolds
- Test Stands
- Semiconductor Equipment
- Gas Pipeline Instrumentation
- Data Loggers
- Pressure Instrumentation

Click Here For Wiring Information

Warranty

Workmanship - AST, Inc. pressure transmitters have a limited one-year warranty to the original purchaser. AST, Inc. will replace or repair, free of charge, any defective transmitter. This warranty does not apply to any units that have been modified; misused, neglected or installed where the application exceeds published ratings. AST’s sensors are made with pride in New Jersey, USA. If in the area please feel free to stop by for a visit!

Installation/Applications - The purchaser is responsible for media compatibility, functional adequacy, and correct installation of the transmitter.

Performance @ 25°C (77°F)

Accuracy¹

< +/- 0.25% BFSL

Stability (1 Year)

+/- 0.25%FS, typ

Proof Pressure

2X Rated Pressure

Burst Pressure

5X or 20,000 psi (whichever is less)

Pressure Cycles

> 100 Million

¹ Accuracy includes: Non-linearity, Hysteresis and Non-repeatability

Environmental Data

Temperature

Operating

-40 to 85°C (-40 to 185°F)

Storage

-40 to 100°C (-40 to 212°F)

Thermal Limits

Compensated Range

0 to 55°C (30 to 130°F)

Temp. Comp. Zero

<+/- 1.5% of FS

Temp. Comp. Span

<+/- 1.5% of FS

Other

Shock

100G, 11 msec, 1/2 sine

Vibration

20G peak, 20 to 2400 Hz.

EMI/RFI Protection

Yes

Rating

IP-66

Electrical Data

Output

4-20mA

Voltage (.25-5V, 1-5V, 1-6V) 0.5-4.5V Ratiometric

Excitation

10-28VDC

5VDC

Output Impedance

<100 Ohms, Nominal

Current Consumption

25mA, max

<10mA

Bandwidth

(-3dB): DC to 250 Hz

(-3dB): DC to 1kHz

Output Noise

<2mV RMS

Zero Offset

<+/- 1% of FS

Span Tolerance

<+/- 2% of FS

Output Load

0-800 Ohms
@10-28VDC

10k Ohms, Min.

10K Ohms, Min.

Reverse Polarity

Yes

AST4900 high purity pressure sensor ordering: pressure port, pressure range, output signal, electrical connection, wetted material, options AST4900 Pressure Range Table: -14.7-25 PSI, 25 PSI, 50 PSI, 100 PSI, 150 PSI, 200 PSI, 250 PSI, 500 PSI, 1000 PSI, 2500 PSI, 5000 PSI,10,000 PSI, -1 to 2 Bar, 2 bar, 5 bar, 7 bar, 10 bar, 20 bar, 35 bar, 50 bar, 70 bar, 100 bar, 250 bar, 350 bar, 500