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AST4520

Flush Submersible Level / Pressure Sensor - Class 1 Div 1, Groups C and D with Approved Barrier

AST4520 Flush Diaphragm Submersible Level Sensor product photo

The AST4520 flush diaphragm submersible transmitter is the cost effective solution for level monitoring of turbulent tanks with viscous media. Approved to UL/cUL913 Class 1 Division 1 IS, Groups C and D with an approved barrier, the product ensures a safe, reliable source for level measurement. The AST4520 is offered with pressure ranges from 0-5 to 0-15 PSIG. The AST4520 steel cage front end design allows for proper flow of media while keeping the sensor at the bottom of the tank or well. With an engraved 316L housing and Kynar PVDF cable, this sensor is built to handle the toughest environments.

Datasheet
w/ Dimensions

CSA Approved
Datasheet
w/ Dimensions

Benefits

- Engraved 316L Housing
- Protective Steel Cage Assembly
- Compatible with a Wide Range of Chemicals
- Suitable for Waste, Salt, Brackish, or Fresh Water Systems
- EMI/RFI Protection
- Reverse Polarity Protection
- Lightening and Surge Protection
- Ruggedly Designed for Harsh Waste Water Environments
- Competitively Priced for OEM Applications
- Kynar PVDF Cable
- Excellent Price to Performance Ratio

Applications

- Lift Stations for Wastewater, Stormwater and Industrial Applications
- Food Tanks
- Viscous Media Tanks

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. 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 units that have been modified; misused, neglected or installed where the application exceeds published ratings. AST4520 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 transmitter.

Performance @ 25°C (77°F)

Accuracy¹

< ± 0.25% BFSL

Stability (1 Year)

±0.25%FS, typical

Overange Protection

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

Temp. Comp. Span

<±1.5% of FS

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

Excitation

10-28VDC

Output Impedance

>10k Ohms

Current Consumption

20mA, typical

Bandwidth

(-3dB): DC to 250 Hz

Output Noise

Zero Offset

<±1% of FS

Span Tolerance

<±2% of FS

Output Load

0-800 Ohms@10-28VDC

Reverse Polarity

Yes

AST4520 Flush Diaphragm submersible level sensor ordering: pressure port, pressure range, output signal 4-20mA, electrical connection Kynar Cable 25ft, 50ft, 75 ft, wetted material 316L, options AST4520 Model Numbers Available for pressure ranges 0-2.5 PSI, 5 PSI, 7.5 PSI, 10 PSI, 15 PSI