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Endress Hauser/ water level sensor transmitter Vibronic switch FTL31 replace

Endress Hauser/ water level sensor transmitter Vibronic switch FTL31 replace

Brand Name : Endress Hauser
Model Number : FTL31-AA4U2AAWBJ
Certification : UL,CE
Place of Origin : Germany
Price : 200-300USD
Payment Terms : T/T, Western Union,Paypal
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Vibronic Point level detection Liquiphant FTL31

Point level switch for liquids in compact design with stainless steel housing

Replace FTL20,FTL260

Liquiphant FTL31 is a point level switch for liquids. The FTL31 is designed for industrial applications in all industries, mainly the machinery industry. The Liquiphant is used for overfill prevention or pump dry-run protection in cleaning and filter systems as well as in cooling and lubrication vessels.
- Smallest vibronic sensor in the market
- Continuous self-monitoring
- Reliable switching independent of media properties
- No calibration or adjustment
- Plug & play


  • Designed according to highest requirements to quality and environmental sustainability. The self-monitoring Liquiphant offers safe switching also in case of power supply loss

  • Independent of changing media properties an accurate switching point is offered

  • A real plug & play sensor is offered without any need for adjustment even with changing media. Measurement is unaffected by conductivity, build-up, turbulence, flows or air bubbles

  • No calibration is required, no specific know-how or tools (e.g. software) necessary

  • Robust design made of stainless steel (316L) assures highest durability

  • A modular design offers different process temperatures and the widest variety of process connections and accessories in the market to fit every application

  • No mechanically moved parts, free of maintenance

Field of application

Point level switch in compact design with stainless steel housing.

  • Process connections: Threads

  • Temperature: -40 to +150°C (-40 to +302°F)

  • Pressure: -1 to +40bar (-14.5 to 580psi)

  • Surface roughness: 3.2µm

  • Overfill prevention and leakage detection WHG, marine approvals, final inspection report

Features and specifications

Measuring PrincipleVibration Liquids
Characteristic / ApplicationLevel switch for liquids and is used in tanks, vessels and pipes.
Supply / Communication20 ... 253V AC/DC, 2-wire
10 ... 30V DC-PNP 3-wire
Ambient temperature-40 °C ... 70 °C
(-40 °F ... 158 °F)
Process temperature-40 °C ... 150 °C
(-40 °F ... 302 °F)
Process pressure absolute / max. overpressure limitVacuum ... 40 bar
(Vacuum ... 580 psi)
Min. density of medium>0,7g/cm³
(>0,5g/cm³ optional)
Main wetted parts316L
Process connectionThreads:
G1/2, G3/4, G1, MNPT1/2, MNPT3/4, MNPT1, R1/2, R3/4, R1
CommunicationAC/DC, DC-PNP
Certificates / ApprovalsCSA C/US, EAC
Safety approvalsOverfill prevention WHG
Design approvalsEN 10204-3.1
Marine approvalABS/ LR/ BV/ DNV
OptionsAdjustment switching delay
Cleaned from oil+grease,
PWIS free

Product pictures:

Packaging & Shipping

Single carton package

Package for special products(following is radiative resource)

Transfer with trayShipping with wooden case

  • We ship by DHL,UPS,Fedex,TNT,EMS express,Air Ship,Sea ship and so on at the reasonable time.
  • DHL,UPS,Fedex,TNT usually takes about 4~6 days,EMS usually takes about 4~13days,more or less,if the deliver region is remote, it will be a little longer, if due to buyer's custom reason, it depends on your customs.
Company Information
Authorised by Endress+Hauser

company receptionist


Workshop/workers are testing boards

Worshop equipment

Our warehouse

Our Services
  • If you find any problem with the goods within 7 days since you get them, you could return the goods to us and we will resend a good new one to you after we receive the goods.
  • Our warranty for the goods is one year and we always test every product cautiously and strictly before sending them out to our customers.

Contact us:

Shenzhen Yearstar Intelligent Technology Co., Ltd.

Address:East 4th Floor, NO.1 Bldg,Pingshan Minqi Technology Park, Xili, Nanshan District, Shenzhen, China

Tel: + 86 755 2608 6930 ext. 864
Fax: +86 755 2650 2620

Whatsapp/Wechat/Mobile Phone: +86 13244706006 QQ:120554877 Skype:sophie-endress-hauser

Fax: +86 755 2650 2620

Whatsapp/Wechat/Mobile Phone: +86 13244706006 QQ:120554877 Skype:sophie-endress-hauser

Why choose us?

  1. We are the authorised agent of Endress Hauser in China, so the product quality is promised.
  2. We are agent, so our price is very competitive.
  3. We stock some cost-effective but widely used products for you to avoid waiting,such as CPS11(D),FTL20,FTL31,PMC131,PMP131,TMT182,FMU30,FMR10 they can satisfy your ordinary demands in industry.
  4. Your any inquire is responsed quickly here, your satisfication is our pursuit.
1What kind of payment could I choose?

For the moment,T/T,Western Union,MoneyGram,Paypal are available.

2.What's the deliver time?(for E+H products only)

If the product is in stock,shipment can be delivered within 2 days after receiving payment.If it's out of stock,.after receiving payment,we'll inform to produce, deliver date depends on producing place,6-8 weeks if it's produced in Suzhou,China ; 8-10 weeks if it's produced aboard.

3.Express,by sea or by air,what should I choose?

If the gross weight is less than 45KGs, we suggest express,DHL,Fedex,UPS,TNT,EMS express are available;
If the gross weight is more than 45KGs, we suggest to deliver by sea or by air.

4.Due to E+H products should be selected according to different environment condition, how can I get exact type?
Tell us necessary environment parameters(temperature,tube diameter,pressure,density,flow speed...),we can choose for you;Or you can choose by yourself, we can provide type-choosing materials for you.

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