AST AST4510 Datasheet

TM

Submersible Liquid Level Sensors

AST4500 AST4510

The AST4500 and AST4510 submersible liquid level sensors are approved to UL/cUL913 (CSA 157)
Class I Div 1, Groups C and D for use in intrinsically safe areas with an approved barrier. It

is also certied for ATEX Class I Zone 0 Exia IIB T4 Ga (Ta = -40°C to +80°C). For pressure ranges

from 0-1 to 0-100 PSI that require a wide range of media compatibility, the submersible series is an
excellent solution to level monitoring for indoor and outdoor applications.

The AST4500 and AST4510 level sensors are completely sealed for submersion, yet vented through
the cable to correct for barometric pressure changes. The welded housing is tested in-house via a
helium leak tester to ensure proper protection. The conductors of the cable are also isolated from the
outside environment to keep the sensor operational for long-term use.

With a removable nose cone, the AST4500 and AST4510 series can be also be installed outside of the

tank through a 1/4” NPT pipe connection. In this conguration, the sensor continuously monitors the

tank level through a threaded connection outside the tank, yet remains fully submersible for applications
with ood prone environments or severe wash-down conditions. Available with voltage or 4-20mA output
signals, AST can provide a cost effective solution for level monitoring for a variety of applications.

For UL certied barrier

drawing, see A01657.

For CSA certied barrier

drawing, see A08949.

Environmental Data

Temperature

Operating -40 to 80°C (-40 to 176°F)

Storage -40 to 100°C (-40 to 212°F)

Thermal Limits

Compensated Range 0 to 55°C (32 to 131°F)

TC Zero <±1.5% of FS (<±2.5%, typ. for 1PSI)

TC Span <±1.5% of FS (<±2.5%, typ. for 1PSI)

Other

Shock 100G, 11 msec, 1/2 sine

Vibration 10G peak, 20 to 2000 Hz.

EMI/RFI Protection: Yes

Rating: IP-68

Electrical Data

Output 4-20mA 1-5VDC

Excitation 10-28VDC 10-28VDC

Output Impedance >10k Ohms <100 Ohms, Nominal

Current Consumption: 20mA, typical <10mA

Bandwidth (-3dB): DC to 250 Hz (-3dB): DC to 1kHz

Output Noise: - <2mV RMS

Zero Offset: <±1% of FS (<±4% 1PSI) <±1% of FS (<±4% 1PSI)

Span Tolerance: <±2% of FS (<±4% 1PSI) <±1.5% of FS (<±4% 1PSI)

Output Load: 0-800 Ohms@10-28VDC 10k Ohms, min

Reverse Polarity Protection Yes Yes

Benefits

High Strength Stainless Steel Construction 
No Internal O-rings 
Wide Operating Temperature 
Pressures up to 100 PSI 
Low Static and Thermal Errors 
Unparalleled Price and Performance 
New Conduit Fitting at Electrical Connection 
Survives Harsh Environments 
Compatible with Wide Variety of Liquids 
EMI/RFI Protection 
ABS (American Bureau of Shipping) Approved 

Applications

Ground Water Level 
Bio-Fuels 
Salt Water Holding Tanks 
Gasoline & Diesel Fuel Tanks 
Fertilizer Tanks 
Earthen & Concrete Dams 
Irrigation Equipment 
Ballast Tanks 
Oil Tanks 
Waste Water Canals 

Performance @ 25°C (77°F)

Accuracy* < ±0.25% BFSL (<±0.5% BFSL for 0-1 PSI)

Stability (1 year) ±0.25% FS, typical

Over Range Protection 2X Rated Pressure

Burst Pressure 5X or 1,250 PSI (whichever is less)

Pressure Cycles > 50 Million

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

TM

Ordering Information

AST4510 L 00005 P 4 1

Series Type

Process Connection

L= Cone

Pressure Measurement

Insert 5-digit pressure code

Pressure Unit

B= Bar
H= Inches H

O

2

K= kg/cm
P= PSI

Outputs

3= 1-5V
4= 4-20mA (2 wire loop powered)

Electrical

N= Conduit tting, Cable 6 ft.
P= Conduit tting, Cable 10 ft.
X= Optional Length (see options)

Wetted Material

1= 316L / 304 / Hytrel Cable / Kynar Cord Grip

2

N

000

-SS

Options Cable Lengths:

140= 15 ft. (4.6 m)
075= 20 ft. (6.1 m)
074= 25 ft. (7.6 m)

004= 35 ft. (10.7 m)
130= 40 ft. (12.2 m)
065= 50 ft. (15.2 m)

003= 100 ft. (30.5 m)
050= 150 ft. (45.7 m)

Approval

(Left Blank)= UL ANSI/ISA 12.12.01 Class I Div 1 Intrinsically Safe Groups C, D (formerly UL913)

-SS= Add “-SS” for CSA157 Class I Div 1 Groups C, D Intrinsically Safe and ANSI/ISA 12.27.01 Single Seal Approval and SIRA ATEX Exia IIB
Class I, Zone 0, T4

Note: CSA approved products require case/earth ground electrical connection.
See wiring installation sheet for further details

Pressure Ranges

PSIG Pressure Code Feet of Water Column @ 4ºC (approx.)

0-100 00100 230.67

0-50 00050 115.33

AST4500

AST4510

+

All pressures between 0-1 PSI and 0-100 PSI are available. Please consult factory. *2.5 and 7.5 PSI Sensor must be ordered in inches of H2O.

0-30 00030 69.20

0-20 00020 46.13

0-15 00015 34.60

0-10 00010 23.07

0-7.5* 00208* 17.30

0-5 00005 11.53

0-2.5* 00069* 5.77

0-1 00001 2.31

+

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© 2014 American Sensor Technologies Inc. AST4500/4510 06/18/2014.

All specications subject to change without notice.