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Process Control Instruments, Field Devices and Industrial Automation
PRODUCTS & SERVICES is a provider of process control instruments and field devices for Oil & Gas, Industrial Machinery, Pipelines, Custody Transfer, Tank Gauging, Waste Processing, Water Treatment Plants, Burner Management Systems and Incinerators, Conveyor Control, Food & Beverage, Motor, Pump & Compressor Control, Wireless Telemetry, Data Logging, Real-Time Process Data to Web.

We are an online distribution channel of genuine manufactured instruments such as

  • Flow Transmitters, Indicators, Sensors and Switches.
  • Pressure Switches, Indicators and Transmitters.
  • Level Switches, Indicators and Transmitters.
  • Temperature Elements, Switches and Transmitters.
  • Mass Flow Meters.
  • Density Meters.
  • pH/ORP Analyzers.
  • Disolved Oxygen Analyzers.
  • Turbidity Meters.
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EH Liquipoint FTW33 Conductive Point level very compact probe for liquid and pasty media in hygienic applications. Flush-mounted. 10-30VDC. 316L Sensor. 3-wire PNP Output. G1 to G3/4 Thread Process Connection. CSA C/US Approval.

Part# with Options:        FTW33-AA4MW5J
Price with Options:        Please Email us your request for quote   


(1) Approval for EH FTW33
Electrical Connection
(2) Electrical Connection for EH FTW33
Process Connection
(3) Process Connection for EH FTW33

  Availability 3 Days  ]


The Liquipoint FTW33 is a point level switch for liquid and pasty media.

It is used preferably in storage tanks, mixing vessels and pipes. Developed and built for the food and beverage industry, the Liquipoint FTW33 meets international hygienic requirements.

It is particularly suited to applications where flush-mounting is necessary.

The Liquipoint FTW33 can be used permanently in process temperatures up to 100 C (212 F) and for 60 minutes in cleaning and sterilization processes up to 150 C (302 F).

The Liquipoint FTW33 can also be used for detecting the foam that commonly occurs within the food and beverage industry.

  • Flush-mounted installation, pipes remain piggable
  • For water- and oil-based media with a dielectric constant ≥ 2
  • No adjustment to the medium in question is required
  • Reliable switching function due to compensation even in the case of heavy buildup
  • Easy installation thanks to compact design - even in tight conditions or where access is restricted
  • Wide range of process connections for installation in new or existing systems
  • Robust stainless steel housing, optionally available with M12x1 connector with IP69K protection
  • Onsite function check via LED indication
  • Can be cleaned and sterilized in place (CIP/SIP)
  • 3-A and EHEDG certificates
  • Meets the requirements of EU 1935/2004, 10/2011 as well as 2023/2006 and FDA 21 CFR 177.2415
Measuring principle

A low, galvanically isolated AC voltage is applied at the electrode in contact with the process. If liquid or pasty media come in contact with the electrode, a measurable current flows and the Liquipoint FTW33 switches. Active buildup compensation ensures reliable switching of the measuring device even if buildup occurs on the sensor.

Measuring Principle Conductive
Characteristic / Application Compact point level switch for using in pipes and in storage, mixing and process vessels with or without an agitator, for water based or oil based media, with active build up compensation,flush mounting
Specialities CIP and SIP suitable
Conductive foam is detectable or can be switched off
Supply / Communication 1030 V DC
Ambient temperature -40 ... 70C
(-40 ... 158F)
Process temperature Standard: -20 ... 100C
Cleaning: -20 ... 150C for 1h
( -4 ... 302F for 1h)
Process pressure absolute / max. overpressure limit Vacuum ... 25 bar
(Vacuum ... 362,5 psi)
Main wetted parts Sensor: 316L
Sensor isolation: PEEK
Process connection Thread G1, G1/2, G3/4, M24
Process connection hygienic Clamp ISO 2852 1 to 1 1/2", 2",
DIN11851 Pipe union
Communication DC PNP
Certificates / Approvals CSA C/US
Design approvals EN 10204-3.1
Hygienic approvals 3A, EHEDG
Options Weld-in adapter,
Process adapter for hygienic process connections

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11371-131 (258) ENDRESS+HAUSER  11371-131

EH 11371 One rod probe for point level detection of conductive liquids in the food industry. 316Ti Rod. G 1 1/2 Process Connection. Relay Communication.




EH Pump Protection FTW360 Conductive Point level probe for liquids. Flush-mounted. G3/4 Process Connection. 316Ti/PTFE Insulation. Relay Communication.



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