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AST4500/AST4510

Level Sensors, Tank Level, Water Level Transmitter

AST4500/4510 Class 1 Div 1 Intrinsically Safe Submersible Level Sensor product photo

The AST4500 and AST4510 submersible 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. For pressure ranges from 0-1 to 0-100 PSI that require a wide range of media compatibility, this 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 configuration, the sensor continuously monitors the tank level through a threaded connection outside the tank, yet remains fully submersible for applications with flood 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.

Note: ABS approval with CSA approved version.
See CSA PDF for product selection.

UL Certified mark

CE Certified mark

CSA Certified mark

ABS Certified Mark

Benefits

- High Strength Stainless Steel Construction
- No Internal O-rings
- Wide Operating Temperature Range
- Ranges up to 100 PSI
- Low Static and Thermal Errors
- Unparalleled Price and Performance
- Rugged Design Survives Harsh Environments
- Compatible with Wide Range of Liquids
- EMI/RFI Protection
- UL/cUL913 Class 1 Div 1 IS Groups C, D when installed with an approved barrier
- CE EN61326
- ABS (American Bureau of Shipping) Approved
(CSA version)

Applications

- Liquid Level Tanks
- Ground Water Level & Depth Measurement
- Gasoline & Diesel Fuel Tanks
- Irrigation System Water Level
- Earthen & Concrete Dams
- Waste Water Canals

Click Here For Wiring Information

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Performance @ 25°C (77°F)

Accuracy1
<±0.25% BFSL
(<±0.5% BFSL for 0-1 PSI)
Stability (1 Year)
±0.25%FS, typ
Proof Pressure
2X Rated Pressure
Burst Pressure
5X or 1,250 psi (whichever is less)
Pressure Cycles
> 50 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 (<±2.5%, typ. for 1PSI)
Temp. Comp. Span
<±1.5% of FS (<±2.5%, typ. for 1PSI)
Other
Shock
100G, 11msec, 1/2 sine
Vibration
10G peak, 20 to 2000 Hz
EMI/RFI Protection
Yes
Rating
IP68

 

Electrical Data

Output
4-20mA
1-5V
Excitation
10-28VDC, Typ.
10-28VDC, Typ.
Output Impedance
>10k Ohms
<100 Ohms, Nominal
Current Consumption
20mA, Max
5mA, typical
Bandwidth
(-3dB): DC to 250 Hz
(-3dB): DC to 1kHz
Output Noise
<2mV RMS
<2mV RMS
Zero Offset
<±1% of FS
<±4%(1PSI)
<±1% of FS
<±4%(1PSI)
Span Tolerance
<±1.5% of FS
<±4%(1PSI)
<±1.5% of FS
<±4%(1PSI)
Output Load
0-800 Ohms
@10-28VDC
10k Ohms, Min.
Reverse Polarity
Yes
Yes

Ordering Information

AST4510
L
00005
P
4
C
1
000
SS
AST4500
Gage PSIG Pressure Range Code Feet of Water Column@4°C (approx.)*
0-100 00100 230.67
0-50 00050 115.33
0-30 00030 69.20
0-20 00020 46.13
 
AST4510
Gage PSIG Pressure Range Code Feet of Water Column@4°C (approx.)*
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

Typical Ranges. All ranges 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. *For information on calculating level please see: http://www.astsensors.com/application/pressure/level-sensor-application.php.

Series Type               
Process Connection
L= Cone
            
Pressure Range
Insert 5-digit pressure range code
          
Pressure Unit
B= Bar H= Inches H2O K= kg/cm2 P= PSI
        
Outputs
3= 1-5V
4= 4-20mA
      
Electrical
C= 6 ft. (1.8m)
D= 10 ft. (3m)
X= Optional Length (see options)
    
Wetted Material
1= 316L / 304 / Hytrel
  
Options Cable Lengths:
140=15 ft (4.6m) 004=35 ft (10.7m) 003=100 ft (30.5m)
075=20 ft (6.1m) 130=40 ft (12.2m) 050=150 ft (45.7m)
074=25 ft (7.6m) 065 =50 ft (15.2m)  
 
Single Seal (add SS if you require CSA Single Seal & ABS Approval)  

Quick Contact

In less than a minute, you can contact AST with your requirements....

(Create your model number from the ordering chart above)

*AST has over 1,000 pressure sensors it can ship from stock for orders received by noon, EST. Submit your configuration and AST can offer the best solution available.

Warranty

Workmanship - AST4500 and AST4510 level sensors have a limited one-year warranty to the original purchaser. AST, Inc. will replace or repair, free of charge, any defective level sensor. All units returned for warranty evaluation must be thoroughly cleaned and free of process residue prior to shipment. Units that are not properly cleaned will be discarded and warranty service will be denied. This warranty does not apply to any sensors that have been modified; misused, neglected or installed where the application exceeds published ratings. AST4510 is not recommended for use with hydrogen. 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 level sensor. The nose cone is installed on the sensor with Loctite ®. To remove, hold the sensor by the hex with a wrench. Put a screwdriver through both holes of the nose cone and turn counterclockwise. The level sensor will have a 1/4" NPT Male pressure port.


Datasheet
w/ Dimensions


CSA Approved
Datasheet
w/ Dimensions

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