Uygulama Notları

Temel teknolojimiz, farklı malzemeler ve Manyetik Anahtarlar ile Manyetik Sensörlerin kullanımı hakkında faydalı ipuçları ve arka plan bilgileri.

 

 

Reed Anahtarları

Şok Direnci

Genel olarak Reed Anahtarları 100 g’a kadar yüksek şok direnci sağlar. Yine de sert bir yüzey üzerine düşme birkaç 100 g büyüklüğünde şok yaratabilir ki, bu da kontaktların ayarlarının bozulmasına yol açabilir. Düşürülen anahtarlar kullanılmadan önce hassaslık bakımından yeniden test edilmelidir!

 

Reed Anahtarlarını keserken ve eğerken yapılacaklar ve yapılmayacaklar

Terminallerin yanlış eğilmesi ya da kesilmesi ağır mekanik stres sebebiyle yapıştırma alanında çatlaklara yol açabilir. Bu sorunun önüne geçmek için terminalin cam gövde ve kıvırma, sırasıyla kesmenoktası arasında kalan  geri kalan kısmı çok sıkı tutulmalıdır.

 

Modifiye edilmiş Reed Anahtarlarının Boyutları

Terminalleri hemen hemen tüm şartlara uygun olacak şekilde modifiye edilmiş Reed Anahtarları tedarik ediyoruz. Boyutlandırma aşağıdaki örneklere göre yapılmalıdır.

 

Reed Anahtarlarımız

Seviye Sensörleri

Level Sensors are available in Form A- and Form B-Variants.

Form A means that the switch is open when the float is on the bottom of the stem (means tank is empty) and closed when the float is on the top of the stem (tank is full).

Form B means that the switch is closed when the float is on the bottom of the stem (means tank is empty) and open when the float is on the top of the stem (tank is full).

If you need to know if your tank is empty or the liquid reaches a low level (e. g. to refill coolant or lubricant) than a Form B Level Sensor is used.

If you need to kniw if your tank is full or nearly full (e. g. to activate a pump for emptying the tank) than a Form A Level Sensor is used.

 

Mounting

In general all oour Level Sensors are suitable to be either mounted from top or from the bottom of a tank. If you mount a Level Sensor from the bottom, with the stem directing up, the switching behavior will change (Form A will become Form B and vice versa).

 

Explore our Level Sensor Products

 

Housing material

Our standard hosuings are made from ABS, PA (Polyamide), PP (Polypropylene), nickel plated brass or stainless steel. Of course we are ready to povide costomized solutions with other materials as well.

 

+ = Excellent
o = Limited
- = Poor
Chemical resistance @20°C / @60°C
ABSPAPPPOMStainless Steel 304
Acetic Acid, dilute- / -- / -+ / ++ / o+ / +
Acetone- / -+ / ++ / o+ / o+ / +
Ammonium Hydroxideo / -+ / ++ / ++ / ++ / +
Aniline- / -o / -+ / +- / -+ / +
Beer, Wine, Whiskey+ / ++ / ++ / ++ / ++ / +
Butanol + / o+ / ++ / ++ / o+ / +
Chloroform- / -- / -- / -- / -+ / +
Citric Acid+ / ++ / ++ / ++ / -o / o
Copper Sulphate+ / +- / -+ / ++ / +o / o
Detergents+ / o+ / o+ / ++ / ++ / +
Diesel fuel+ / +o / o+ / o+ / ++ / +
Ethanol + / ++ / ++ / ++ / ++ / +
Ethylene Glycol+ / ++ / ++ / ++ / o+ / +
Ferric Chloride+ / +- / -+ / +- / -- / -
Formaldehyde (Formalin)+ / +o / o+ / ++ / ++ / +
Formic Acid+ / o- / -+ / +- / -+ / o
Fruit Juice+ / ++ / ++ / ++ / -+ / +
Gasoline- / -- / -- / -+ / ++ / +
Glycerol (Glycerin)+ / ++ / ++ / ++ / ++ / +
Hydrogen Peroxide, dilute- / -- / -+ / +o / -+ / +
Lactic Acid+ / +o / -+ / ++ / -+ / o
Methanol- / -o / -+ / ++ / ++ / +
Milk+ / o+ / ++ / ++ / ++ / +
Mineral Oil+ / ++ / ++ / ++ / ++ / +
Nitric Acid, dilute- / -- / -+ / +- / -+ / o
Nitrobenzene- / -- / -+ / ++ / -+ / +
Phosphoric Acid, dilute+ / +- / -+ / ++ / -o / -
Propanol (IPA)o / -+ / ++ / ++ / +o / o
Silver Nitrate+ / oo / -+ / ++ / -+ / +
Soaps+ / ++ / ++ / ++ / ++ / +
Sodium Hydroxide, dilute+ / +o / -+ / ++ / ++ / +
Sulphuric Acid, diluteo / -- / -+ / +o / -o / -
Urine+ / ++ / ++ / ++ / ++ / +
Vegetable Oil+ / o+ / ++ / ++ / ++ / +
Water+ / ++ / o+ / ++ / ++ / +
Water, Sea-, Salt-+ / ++ / o+ / ++ / +- / -

The above mentioned data is intended only as a guide for chemical compatibility. We do not assume any liability for the accuracy of the information. It is strongly recommended that users perform their own tests to determine suitability of material.

Mıknatıslar

We provide assistance to select the suitable magnet for your sensor application. Please take a look at our overview of prime magnet materials available.

 

Material Grades

Remanence

Coercivity

Energy Product

Operating 
Temperature

Br

HcB

HcJ

(BH) max.

max.

mT

kA/m

kA/m

kJ/m3

°C


 

NdFeB

N30

1105

836

955

235

80

N30H

1105

836

1274

235

120

N30SH

1100

836

1512

239

150

N33EH

1185

828

955

275

180

N35

1185

828

955

275

80

N35H

1190

828

1274

275

120

N35SH

1190

828

1512

275

150

N40SH

1260

844

1512

314

150

N45

1350

840

955

354

80


 

SmCo5

S20

875

617

1194

159

250

Sm2Co17

S24H

975

724

1433

183

300

S28H

1065

724

1433

215

300


 

AlNiCo

A500

1281

50

52

40

500


 

Ferrit

Y10

215

143

203

8

250

Y30BH

390

229

231

29

300

Y35

410

183

167

31

300


 

Bonded Ferrit

FB1

240

171

225

11

80


 

Bonded NdFeB

BN8

575

378

1035

64

150

 

Magnet Glossary

Anisotropic Magnet material having a preferred direction of magnetic orientation

Bonded Magnets Magnet powders mixed with polymer carrier; mechanical properties reach from elastic to hard; penalty of bonded material is a "weaker magnet" compared to non-bonded material

Coercivity Hc [kA/m] Demagnetizing force necessary to reduce polarisation J (HcJ) or induction B (HcB) to zero

Curie Temperature Temperature at which a magnet is totally demagnetized

Energy Product BH max [kJ/m3] Point on the second quadrant of the hysteresis loop at which the product of induction B and magnetizing force H reaches a maximum; describes the "strength" of magnet material

Gauss Unit of magnetic flux density in the CGS system (1 Gauss = 10-4 Tesla)

Isotropic Magnet material with no preferred orientation; can be magnetized in any direction

Magnet Pole "Output" of the magnetic flux

Oersted Unit of magnetizing force in the CGS system (1 Oersted = 0.0796 kA/m)

Remanence Br [mT] Residual induction in magnet material after being magnetized to saturation

Tesla Unit of magnetic flux density in the SI system (1mT = 10 Gauss)

Sorunuz mu var? Temasa geçin!
Interaktiver Reedschalter

İnteraktif Reed Anahtarı

Çeşitli Reed Anahtarı aktivasyon seçeneklerini test ediniz ve interaktif Reed Anahtarı aracımızla bir Reed Anahtarının nasıl çalıştığını görünüz!

 

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