AST AST46DS Datasheet

TM

Explosion-Proof Pressure Transducer / Transmitter with Display

AST46DS CSA Certified: Class I & II Division 1 & 2 | Class III

AST46DS explosion proof pressure transducers features the latest advances in
transducer technology. With a power supply as low as an 8VDC and low current
consumption, the AST46DS can operate in remote areas with minimal power. The

re-zeroing function, allows for eld calibration in a safe environment to further enhance

well site or system readings. Pressure ranges are available up to 20,000 PSI; these
explosion-proof pressure transducers and transmitters are designed for all common oil
and gas pressures from shallow to deep wells.

Explosion Proof: Class I & II Division 1 / 2 Groups A, B, C, D, E, F, G



Class III Division 1 & 2 

ANSI/ISA 12.27.01-2003 Single Seal Approved 

ABS (American Bureau of Shipping) Approved 

Display Units: PSI | Bar | kpa | Mpa | kg/cm 

2

| in WC | Volts | mA

Benefits

Low current consumption voltage output 
Re-zero push-button functionality 
Display pressure units or output signal 

Environmental Data

Operating -40 to 85°C (-40 to 185°F)

Display Operating -30 to 80°C (-22 to 176°F)

Storage -55 to 105°C (-67 to 221°F)

Temperature

Compensated Range 0 to 55°C (30 to 130°F)

TC Zero <±1.0% of FS

Limits

Thermal

TC Span <±1.0% of FS

Shock 100G, 11 msec, 1/2 sine

Vibration 10G peak, 20 to 2000 Hz.

EMI/RFI Protection: Yes

Enclosure Rating: Suitable for Outdoor Use; Type 4X Rated

Other

Pollution Degree 2 (interior of enclosure)

Measurement
(Installation) Category

Altitude 2000m

I

Accurate, repeatable sensor technology 
Rugged design withstands harsh outdoor 

environments



Available in exotic alloys

High quality, NEMA 4X case and nish 

withstands salt spray and outdoor environments

Performance @ 25°C (77°F)

Accuracy* < ±0.25% BFSL

Stability (1 year) ±0.25% FS, typical

Over Range Protection 2X Rated Pressure

Burst Pressure 5X Rated Pressure or 45,000 PSI, whichever is less

Pressure Cycles > 100 Million

Electrical Data

Output 4-20mA 1-5VDC

Excitation 8-28VDC 8-28VDC

Output Impedance >10k Ohms <100 Ohms, Nominal

Current Consumption: 25mA, typical 2mA, typical

Bandwidth (-3dB): DC to 1kHz (-3dB): DC to 1kHz

Output Noise: - <2mV RMS

Zero Offset: <± 0.5% of FS <± 0.5% of FS

Span Tolerance: <± 1.0% of FS <± 1.0% of FS

Output Load: 0-800 Ohms@8-28VDC 5k Ohms, Min.

Reverse Polarity Protection Yes Yes

Applications

SCADA systems 

Wellhead systems 
Compressor systems and 

stations



Pipeline instrumentation

Power generation equipment 

Offshore platforms 

Oil and gas pressure 

monitoring



Test systems

American Sensor Technologies • 450 Clark Dr., Mt. Olive, NJ 07828 • phone [phone] • fax [phone] • email: [e-mail]

TM

Ordering Information

AST46DS G 0500 3 1 0002P

Series Type

Process Connection

A= 1/4” NPT Male
I= 1/4” NPT Female
P= 1/2” NPT Male
W= F250C Autoclave Female

Pressure Reference

G= Vented* (0-499 PSI)
V= Vented - Vacuum Calibrated* (-14.7 up to 500 PSI)
0= Non-Vented (0-500 to 9,999 PSI)
1= Non-Vented (10,000 to 19,999 PSI)
2= Non-Vented (20,000 PSI)

Pressure Measurement

Insert - 4 digit pressure code

Pressure Unit

B= Bar K= kg/cm

Outputs

3= 1-5V (3 Wire + Case Connection)
4= 4-20mA (Loop Powered + Case Connection)

Electrical

2= Terminal Blocks (1/2” FNPT Conduit Connections - standard)

2

P= PSI H=Inches H2O

P

-Z

Sensor Material

0= 17-4PH
1= 316L**

Options

Options

000= No Options

000= No Options

Approval

-Z= Add “-Z” for CRN Registered to ANSI/ASME B31.3. Contact factory for material, pressure, and process connection options.

*Not suitable for Class II; Sensing element corrects for barometric pressure
through base sensor assembly.
**NACE MR0175/ISO 15156 compatible material

PSIG Measurement

+

2.5 and 7.5 PSI Sensor must be ordered in inches of H2O. Pressures from 0-1 to 0-15PSI

are not suitable for hydrogen. 316L and Hastelloy C276 are the only material options.

www.astsensors.com

2= Inconel 718 (contact factory for availability)**
4= Hastelloy C276 (contact factory for availability)**

Pressure Ranges

Low Pressure

0-1

+

0-2.5

0-5 G 0005

+

0-7.5

0-10 G 0010

0-15 G 0015

G 0001

G 0069

G 0208

Pressure Code

High Pressure

-14.7 to 25

-14.7 to 30 V 0030

-14.7 to 50 V 0050

0-25 G 0025

0-50 G 0050

0-100 G 0100

0-200 G 0200

0-500 0 0500

0-1,000 0 1000

0-3000 0 3000

0-5,000 0 5000

PSIG Measurement

0-7,500 0 7500

0-10,000 1 0000

0-15,000 1 5000

0-20,000 2 0000

For pressure 10,000 PSI and up, use pressure reference digit to specify rst number.

Example, AST46DSP15000P4X1000 = 15,000 PSI pressure range. Display for 20,000
PSI pressure range has maximum reading of 19,999 PSI.

© 2014 American Sensor Technologies Inc. AST46DS 01/21/2014.

V 0025

Pressure Code

All specications subject to change without notice.