EVS722-51N [TE]

EXTENDED VERTICAL LIQUID LEVEL SENSORS;


型号：	EVS722-51N
厂家：	TE CONNECTIVITY
描述：	EXTENDED VERTICAL LIQUID LEVEL SENSORS
文件：	总4页 (文件大小：292K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

te.com

EXTENDED VERTICAL

LIQUID LEVEL SENSORS

EVS Series

Two position level switching

Mounted on the top wall of a tank

Reliable hermetically sealed reed switches

Body and float made from inert materials

The EVS series of point liquid level switches demonstrate a high degree

of reliability due to the use of non-reactive wetted components and a

unique reed switch designed specifically for level sensing applications.

The sensor utilizes a moving float with an embedded magnet to activate

one of two reed switches located in the sensor body.

Features

 Full and/or empty detection

 Voltage rating up to 175VDC

 Current rating up to 0.4 amp

 Compact easy to install design

 Optional cable lengths

As the liquid level raises the float, it moves a magnet from the bottom

switch to the top switch. The use of two switches provides an indication

of three different level conditions.

The reliability of this sensor results from a very simple operating principle,

a single moving part, media compatible wetted materials, and a unique

reed switch design.

 Includes mounting hardware

The sensor mounts into the top wall of a liquid storage tank using an M16

x 2.0 threaded fitting. The M16 mount is available in an internal or

external configuration. The outputs are simple N.O. or N.C. SPST reed

switches that utilize Ruthenium contact points for reliability. Electrical

outputs are three wires with PVC insulation and optional lengths of 0.5 m

or 2.0 m.

Applications

 Water and fuel storage tanks

 Pump on/off controls

 Marine bilge and ballast tanks

 Flood detection and prevention

 Coolant level indication

 Livestock watering tanks

 Irrigation systems

 Water treatment plants

 Waste water tanks

›

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Page 1

TE CONNECTIVITY SENSORS /// EVS SERIES

10/2020

LIQUID LEVEL SWITCH

EVS Series

Absolute Maximum Ratings⁽¹⁾

Parameter

Min

Max

Units

Notes/Conditions

DC contact voltage

DC contact current

RMS contact voltage

RMS contact current

175

0.4

125

0.28

110

Do not exceed 5 W

Model 3xx

-30

-1.0

1.0

°C

Bar

Storage and operating

temperature

Model 4xx

Model 7xx

Fitting pressure

4.7

Internal tank pressure

Tank wall thickness (Internal

mount)

Tank wall thickness

(External mount)

⁽¹⁾Maximum limits the device will withstand without damage

4.0

Product Specifications

Parameter

Details & Options

Mounting Orientation

Fitting

Top entry (Internal or external)

M16 x 2.0 Internal or External

Switch Operation

Contact Forms

Both switches N.C. when float is at the bottom of the body

Top switch – Form B (N.C. SPST)

Bottom switch – Form A (N.O. SPST)

Contact Material

Contact resistance (max)

Ruthenium

140 mΩ

Housing: Nylon 6.6

PVC

Brass

Glass filled nylon 6.6

PVC

Housing and Float Material Options

Float:

Polypropylene

Cable Description

Shock

18 AWG 16/0.025mm PVC insulated, UL/CSA/BS6361

±50g 11ms half sign duration

Vibration

±35g 0 – 500Hz

Ambient Humidity

Ingress protection

0 – 95% RH (non-condensing)

IP68 (wetted surfaces) IP65 (non-wetted surfaces)

TE CONNECTIVITY SENSORS /// EVS SERIES

10/2020

Page 2

LIQUID LEVEL SWITCH

EVS Series

Outline Dimensions

Internal Fit

External Fit

Schematic and Switch Operation

Mounting Detail & Hardware

TE CONNECTIVITY SENSORS /// EVS SERIES

10/2020

Page 3

LIQUID LEVEL SWITCH

EVS Series

Ordering Information

Model Number

EVS __ __ __ __ __ __

Material (body + float)

Seal Material Options

Body - Nylon 6.6

312

Blank Silicone (model 452 & 722 only)

Float – Glass filled nylon 6.6

Nitrile (model 312 only)

Body – PVC

Float - PVC

452

Body – Brass

Float - Polypropylene

722

Cable Length Options

0.5m Single insulated PVC

Fitting Options

Internal M16

External M16

Universal fitting kit (Options 1 & 2)

›

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CONNECT WITH A SPECIALIST

NORTH AMERICA

Tel +1 800 522 6752

EUROPE

Tel +31 73 624 6999

ASIA

Tel +86 0400 820 6015

te.com/sensors

TE Connectivity, TE, 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 only, 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.

10/2020

TE CONNECTIVITY SENSORS /// EVS SERIES

10/2020

Page 4

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