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SUBMERSIBLE
Flush Diaphragm Liquid Level Sensor
AST4520
Overview
The AST4520 Flush Submersible liquid level sensor 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 also certified to ATEX / IECEx
Class I Zone 0 Exia IIB T4 Ga (Ta = -40°C to +80°C).
The AST4520 is offered with pressure ranges from 0-2.5 to 0-15 PSIG.
The AST4520 steel cage front end design allows for proper flow of
liquids while keeping the sensor at the bottom of the tank or well. With
an engraved stainless steel housing and Kynar PVDF cable, this
sensor is built to handle the toughest environments.
Benefits
Engraved Housing
Protective Steel Cage Assembly
Kynar PVDF Cable
Compatible with Wide Variety of Chemicals
Ruggedly Designed for Harsh Waste Water Environments
Suitable for Waste, Salt, Brackish, or Fresh Water Systems
EMI/RFI and Reverse Polarity Protection
Lightning and Surge Protection
Competitively Priced for OEM Applications
ABS (American Bureau of Shipping) Approved
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Accuracy
< ±0.25% BFSL
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
Operating
-40 to 80°C (-40 to 176°F)
Storage
-40 to 100°C (-40 to 212°F)
0-100% relative humidity, non-condensing
Compensated Range
0 to 55°C (32 to 132°F)
TC Zero
<±1.5% of FS
TC Span
<±1.5% of FS
Shock
100G, 11 msec, 1/2 sine
Vibration
10G peak, 20 to 2000 Hz.
EMI/RFI Protection:
Yes
Rating:
IP-68
AST4520 Flush Diaphragm Liquid Level Sensor
Applications
ABS (American Bureau of Shipping) Approved
Lift Stations - Wastewater, Storm Water, Industrial Applications
Food Tanks
Viscous Media Tanks
Heavy Oil
Performance @ 25°C (77°F)
Environmental Data
Temperature
Thermal Limits
Other
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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
AST4520 Flush Diaphragm Liquid Level Sensor
Electrical Data
Dimensions
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AST4520 Flush Diaphragm Liquid Level Sensor
UL Approved Barrier Installation / A01657 CSA Approved Barrier Installation / A08949
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AST4520
Y
00005 P 4 X 1
353
-SS
Series Type
Process Connection
Y= G1/2 with steel cage
T= G1/2 flush diaphragm without steel cage
Pressure Range
Insert 5-digit pressure range code. Ranges between 0-2.5 PSI and 0-15
PSI available. *2.5 and 7.5 PSI Sensor must be ordered in inches of H2O.
Gauge
PSIG
Pressure
Code
Feet of Water
Column @
4ºC (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
Pressure Unit
H= Inches H2O P= PSI
Outputs (contact factory for 0.5-2.5V non-ratiometric (3-5VDC)
3= 1-5V
4= 4-20mA (2 wire loop powered)
Electrical
X= Optional Length (see options)
Wetted Material
1= 316L Sensor / 304 SS Housing / Kynar Cable
Options (Cable Lengths):
353 = 25 ft. (7.62 m)
354 = 50 ft. (15.24 m)
355 = 75 ft. (22.86 m)
Approval
(Left Blank)= UL ANSI/ISA 12.12.01 Class I Div 1 Intrinsically Safe Groups
C, D (formerly UL913)
-SS= CSA157 Class I Div 1 Grps C, D Intrinsically Safe, ANSI/ISA
12.27.01 Single Seal and ATEX/IECEx Exia IIB Class I, Zone 0, T4
Note: CSA approved products require case/earth ground electrical connection. See wiring installation sheet for further details
TE.com/sensorsolutions
NORTH AMERICA
ASIA
AST4520 Flush Diaphragm Liquid Level Sensor
American Sensor Technologies, Inc. (AST),
a TE Connectivity Company
Tel: 1 800-522-6752
Email: [email protected]
Measurement Specialties, Inc., a TE Connectivity company.
Measurement Specialties, TE Connectivity, TE Connectivity (logo) and EVERY CONNECTION COUNTS are trademarks. All other logos, products and/or company names referred to herein
might be trademarks of their respective owners.
The information given herein, including drawings, illustrations and schematics which are intended for illustration purposes o nly, is believed to be reliable. However, TE Connectivity makes
no warranties as to its accuracy or completeness and disclaims any liability in connection with its use. TE Connectivity ‘s obligations shall only be as set forth in TE Connectivity‘s Standard
Terms and Conditions of Sale for this product and in no case will TE Connectivity be liable for any incidental, indirect or consequential damages arising out of the sale, resale, use or misuse
of the product. Users of TE Connectivity products should make their own evaluation to determine the suitability of each such product for the specific application.
© 2015 TE Connectivity Ltd. family of companies All Rights Reserved.
Hong Kong Sensor Technologies (HKST),
a TE Connectivity Company
Tel: 86 0400-820-6015
Email: [email protected]
SENSOR SOLUTIONS /// AST4520 02/2019
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