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American Sensor Technologies
American Sensor Technologies
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AST4900 High Purity
Media Isolated Pressure Sensor
OVERVIEW
The AST4900 is a media isolated pressure sensor intended for
the measurement of liquids and gases in high purity applications.
Utilizing Krystal Bond™ Technology, each sensor is free of oil-ll,
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.
BENEFITS
n All 316L High Strength Stainless Steel Construction
n No Oil, Welds, or Internal O-rings
n Wide Operating Temperature Range
n UL/cUL508 Approved
n CE EN61326 Certified
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APPLICATIONS
n Gas Panels and Manifolds
n Test Stands
n Semiconductor Equipment
n Gas Pipeline Instrumentation
n Data Loggers
n Pressure Instrumentation
Performance @25°C (77°F)
Accuracy* < ±0.25% BFSL
Stability (1 year) ±0.25%FS, typ
Over range Protection 2X Rated Pressure
Burst Pressure 5X or 20,000 psi
(whichever is less)
Pressure Cycles > 100 Million
* Accuracy includes non-linearity, hysteresis & non-repeatability
Electrical Data
Output 4-20mA Voltage (.25-5V, 1-5V, 1-6V) 0.5-4.5V Ratiometric
Excitation 10-28VDC 10-28VDC 5VDC
Output Impedance - <100 Ohms, Nominal <100 Ohms, Nominal
Current Consumption: 25mA, max <10mA <10mA
Bandwidth (-3dB): DC to 250 Hz (3dB): DC to 1kHz (3dB): DC to 1kHz
Output Noise: - <2mV RMS <2mV RMS
Zero Offset: <±1% of FS <±1% of FS <±1% of FS
Span Tolerance: <±2% of FS <±1.5% of FS <±2% of FS
Output Load: 0-800 Ohms@10-28VDC 10k Ohms, Min. 10K Ohms, Min.
Reverse Polarity Protection Yes Yes No
Environmental Data
Temperature
Operating -40 to 85°C (-40 to 185°F)
Storage
Thermal Limits
Compensated Range 0 to 55°C (30 to 130°F)
TC Zero <±1.5% of FS
TC 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:
-40 to 125°C (-40 to 250°F)
IP-66
8 Leroy Road, PO Box 1073 Williston, VT 05495
Phone: (802) 863-0085 Fax: (802) 863-1193

Ordering information
AS T 4 9 0 0 N 0 0 5 0 0 B 3 E 1 0 0 0
Series Type
Process Connection
A=1/4” NPT Male
N=1/4” VCR Male
Pressure Range
Insert pressure range from chart
Pressure Unit
B= Bar
K= kg/cm2
P= PSI
Outputs
1= 0.5-4.5V ratiometric 6= 1-6V
3= 1-5V A= 10mV/V
4= 4-20mA (2 wire loop powered)
Electrical
A=2Ft.(0.6m)
B=4Ft.(1.2m)
C=6Ft.(1.8m)
D=10Ft.(3.0m)
E=Mini DIN 43650
R=6 Pin Bendix Connector
Wetted Material
1=316 L
2=Inconel 718 (Limited Availability)
Options
000= No special options
Pressure Ranges
PSIG
Measurement
Range
-14.7 to 25 V0025
-14.7 to 85 V0085
0-25 00025
0-50 00050
0-100 00100
0-150 00150
0-300 00300
0-500 00500
0-1,000 01000
0-2,500 02500
0-3000 03000
0-5,000 05000
0-7,500 07500
0-10,000 10000
Pressure
Range
Code
BARG
Measurement
Range
-1 to 2 V0002
0-2 00002
0-5 00005
0-7 00007
0-10 00010
0-20 00020
0-35 00035
0-50 00050
0-70 00070
0-100 00100
0-250 00250
0-350 00350
0-500 00500
0-700 00700
Pressure
Range
Code
Dimensional Data
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 modied; misused, neglected or installed where
the application exceeds published ratings.
Installation/Applications - The purchaser is responsible for media compatibility, functional adequacy, and correct installation of the transmitter.
AST’s sensors are made with pride in New Jersey, USA. If in the area please feel free to stop by for a visit!
www.ttiglobal.com
© 2007 American Sensor Technologies Inc. All specications are subject to change without notice. Form data4900, Rev 3/20/07