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.
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 | ||||
ABS | PA | PP | POM | Stainless Steel 304 | |
---|---|---|---|---|---|
Acetic Acid, dilute | - / - | - / - | + / + | + / o | + / + |
Acetone | - / - | + / + | + / o | + / o | + / + |
Ammonium Hydroxide | o / - | + / + | + / + | + / + | + / + |
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 | + / o | o / - | + / + | + / - | + / + |
Soaps | + / + | + / + | + / + | + / + | + / + |
Sodium Hydroxide, dilute | + / + | o / - | + / + | + / + | + / + |
Sulphuric Acid, dilute | o / - | - / - | + / + | 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 | ||
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)
İnteraktif Reed Anahtarı
Çeşitli Reed Anahtarı aktivasyon seçeneklerini test ediniz ve interaktif Reed Anahtarı aracımızla bir Reed Anahtarının nasıl çalıştığını görünüz!