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CAT-PM--E-04

ASM GmbH

Tel.: 08123/986-0 Fax: 08123/986-500 www.asm-sensor.com

Magnetic Scales – overview

Magnetic Scales – Technical Information

Types of magnetic scales / Application recommendation

Type

Standard scale

PMIB3

Stainless steel scale

PMIB3-ST

Stainless steel

elastomer scale

PMIB3-HT

base strip

CK 85 stainless steel

CrNi 17 7 stainless steel

CrNi 17 7 stainless steel

magnetic scale

PE magnetic scale

PE magnetic scale

Elastomer magnetic scale

environmental conditions

normal

difficult

very difficult

corrosion resistance

normal

high

high

temperature resistance

normal

normal

high

media resistance

normal

normal

high

Chemical durability – PE magnetic scales (PMIB3, PMIB3-ST)

no / little influence

weak / middle influence

strong influence

some mineral oils

vegetable oils

methyl / isopropanol

weak organic acids

formaldehyde

anhydrous ammonia

acetylene

benzin

kerosene

steam, vapour

acetic acid 20% / 30%

sea water

olein acid

benzene

nitrobenzene

paint solvents

turpentine

nitric acid 70%

hydrochloric acid 37%

toluene

xylene

tetrachloromethane

trichloroethylene

Chemical durability – Elastomer magnetic scales (PMIB3-HT)

no / little influence

weak / middle influence

strong influence

motor oils

gear oils

ATF (automatic transmission fluid)

hydraulic fluid

kerosene

antifreeze agent

purifying agent

turpentine

water

sea water/salt water

JP-4 fuel (Jet fuel)

gasoline/petrol

heptane

alcohol

aromatic hydrocarbon (benzene, toluene,

xylene)

ketone

anorganic acids (HCl, H