PRECISION
Pressure Transducer / Transmitter
AST20HA
Overview
The AST20HA is a digitally compensated precision 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 advanced
electronics, the AST20HA steps into its own league of high
performance pressure sensing at an affordable price.
Benefits
Digital ASIC Compensation
Superb Temperature Performance
Real Time Thermal Compensation
Real Time Linearity Correction
Turndown Capability
Pressures up to 45,000 PSI
ABS (American Bureau of Shipping) Approved
Applications
Aerospace
Hydraulics
Analytical Instruments
Hydrogen (Consult factory for media compatibility)
Labs / Metrology
Medical
Military
Test Stands
TE CONNECTIVITY
/// AST20HA (REV C)
06/2021
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INDUSTRIAL OEM
AST20HA Pressure Transmitter
Environmental Data
Ambient Temperature: 25°C (77°F) (Unless otherwise specified)
Operating Ambient
Storage
-40 to 85°C (-40 to 185°F)
-40 to 125°C (-40 to 250°F)
Shock, Vibration & Ingress Protection (IP)
Standard
EN 60067-2-27
Description
Shock Test
Test Value
500m/s
2
, 6ms, half sine-wave, 6 shocks (3/direction),
horizontal and vertical axis, 12 total shocks
5-25 Hz, 2mm, 25-150 Hz, 50m/s, Sweep rate: 1
octave/min, Duration: 24 hours/axis (48 hours total),
horizontal and vertical axis
10-2000 Hz, vibration level: 0.0314 (m/s
2
)
2
/Hz, 24 hrs/axis
(48 hrs total), 2 directions: horizontal and vertical
Drop of 1 meter to floor made of concrete. Dropped twice
on the threaded end and two times perpendicular to the
threaded end.
Dust-tight, protected against powerful water jets
EN 60068-2-6
Sinusoidal Vibration
EN 60068-2-64
Random Vibration
IEC 60068-2-32
Drop Test
IP-66
Ingress Protection
TE CONNECTIVITY
/// AST20HA (REV C)
06/2021
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INDUSTRIAL OEM
AST20HA Pressure Transmitter
Performance
Ambient Temperature: 25°C (77°F) (Unless otherwise specified)
Parameters
Accuracy
Accuracy (Range>15,000PSI)
Zero Error
Span Error
Thermal Error, Zero
Thermal Error, Span
Stability (1 year)
Proof Pressure
Burst Pressure
Compensated Temp. Range
MIN
-0.1
-0.2
-0.5
-0.5
-0.5
-0.5
±0.1
2X Rated Pressure
5X Rated Pressure or
50,000 (whichever is less)
0 - 70° (32 to 158°)
TYP
MAX
+0.1
+0.2
+0.5
+0.5
+0.5
+0.5
UNITS
%Span
%Span
%Span
%Span
%Span
%Span
%Span
PSI
PSI
°C (°F)
6
7
NOTES
1
1
2
3
4
5
Electrical Data
Model
Output
Excitation
Output Impedance
Current Consumption
Output Noise
Output Load
Reverse Polarity Protection
Sampling Rate
4-20mA
10-28VDC
> 10k Ω
-
-
0-800Ω
Yes
400Hz
0-5V, 1-5V
10-28VDC
< 100 Ω
<10mA
<1mV, RMS
5k Ω, Min.
Yes
400Hz
AST20HA
0-10V, 1-10V
15-28VDC
< 100
Ω
<10mA
<1mV, RMS
5k Ω, Min.
Yes
400Hz
0.5-4.5V Ratiometric
5.0 ± 0.5VDC
< 100 Ω
<10mA
<1mV, RMS
5k Ω, Min.
Yes
400Hz
Notes
1. The maximum deviation from a best fit straight line (BFSL) fitted to the output measured over the pressure range at 25°C. Includes all errors due to pressure
non-linearity, hysteresis, and non-repeatability. Span is the algebraic difference between full scale output and zero pressure offset.
2. The maximum variation from the ideal offset measured at 25°C.
3. The maximum variation from the ideal full-scale span measured at 25°C.
4. The maximum variation of offset within the compensated temperature range relative to 25°C.
5. The maximum variation of full-scale span within the compensated temperature range relative to 25°C.
6. The maximum pressure that can be safely applied to the product tor it to remain in specification once pressure is returned to the operating pressure range.
7. The maximum pressure that can be applied without causing escape of the pressure media.
TE CONNECTIVITY
/// AST20HA (REV C)
06/2021
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INDUSTRIAL OEM
AST20HA Pressure Transmitter
Dimensions & Electrical Connection
Unless otherwise specified, all dimensions are in inches
EC + SH + PC = Total Nominal Product Length
Ranges 25 PSI and Above
EC = Electrical Connector
SH = Sensor Housing
PC = Process Connection
V = Voltage Supply
N/C = Not Connected
WP = Wide Pin
S = Signal
EC + SH + PC = Total Nominal Product Length
Ranges Below 25 PSI
EC = Electrical Connector
SH = Sensor Housing
PC = Process Connection
V = Voltage Supply
N/C = Not Connected
WP = Wide Pin
S = Signal
Electrical Connectors Option Codes
Cable
A
2ft (0.6m)
B
4ft (1.2m)
C
6ft (1.8m)
D
10ft (3m)
Color
Green
Black
Red
White
3 Wire
Voltage
N/C
GND
+V
S
4-20mA
N/C
-V
+V
N/C
TE CONNECTIVITY
/// AST20HA (REV C)
06/2021
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INDUSTRIAL OEM
AST20HA Pressure Transmitter
Electrical Connectors Option Codes
(Cont’d)
E
DIN 43650C 8.0mm
(Mini-DIN)
I
DIN 43650A 18.0mm
(Big- DIN)
R
Y
6 Pin Bendix
M12X1
Pin
1
2
3
WP
3 Wire
Voltage
S
GND
+V
N/C
4-20mA
N/C
-V
+V
N/C
Pin
1
2
3
WP
3 Wire Voltage
+V
GND
S
N/C
4-20mA
+V
-V
N/C
N/C
Pin
A
B
C
D
E
F
3 Wire Voltage
+V
S
N/C
GND
N/C
N/C
4-20mA
+V
-V
N/C
N/C
N/C
N/C
Pin
1
2
3
4
3 Wire Voltage
+V
N/C
GND
S
4-20mA
+V
N/C
-V
N/C
Pressure Port Option Codes
A
1/4 NPT Male
B
1/8 NPT Male
C
1/4 BSPP Male
E
9/16
–
18 UNF Male
F
7/16
–
20 UNF Male
P
1/2 NPT Male
W
F250C Female Autoclave
TE CONNECTIVITY
/// AST20HA (REV C)
06/2021
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