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ASM GmbH POSITAPE®Stainless Steel Tape Extension Position Sensor

The rugged sibling of the cable extension · 250 mm → 20,000 mm · Resistant to dirt, ice, deflection and thermal expansion

Cable extension and stainless steel tape sensors are two different solutions for the same problem. Cable is cheap, light, fits in a small spool — but it struggles under high-cycle wear, dirt, and oxidising fluids. Tape, by contrast, is a 10 mm wide × 0.08 mm thick stainless steel strip offering much higher durability: dirt particles pass beside the tape, it glides in oily environments, and outdoor thermal expansion does not affect it.

The ASM POSITAPE® family was introduced in 2009. Today 9 models span 250 mm to 20,000 mm — from the compact zinc-cast housing to the 4-6 kg WB100M for long-stroke applications. All models use magnetic absolute encoders as standard sensing technology (based on POSIHALL) — no battery, no gears, a robust alternative to optical encoders.

Key innovation: in 2019, the POSITAPE® WBT series — models with integrated MEMS inclination sensor (WBT21, WBT61, WBT85) — were introduced. For mobile cranes and aerial platforms, position + inclination measurement in one module on one cable halves installation time and cost. Output interfaces include 0.5-10 V voltage, 4-20 mA current (3-wire), programmable analog, SSI digital, CANopen, SAE J1939 — all modern industry standards. IP protection spans IP65 → IP69K — including food-processing wash-down.

IMB Electric is listed for Türkiye on ASM Sensor's official global distribution network, with our authorisation extending to Türkiye + the Middle East + North Africa + Western Asia.

Outdoor position monitoringMobile machinery (cranes, excavators, aerial platforms)Hydraulic cylinder long strokeLifts and load liftingFood-processing wash-downMining and heavy industryOutdoor thermal-expansion resistantDirty/icy/oily environmentsPosition + inclination in one module (WBT)
01

Short-Range Tape Encoder Models (250 mm — 4,000 mm)

Compact body · delivers the core advantage of tape technology (dirt/oil resistance) in an economical package

3 MODELS264 PRODUCTS
SHARED IN THIS GROUPTape:Stainless steel 10×0.08 mm · Magnetic absolute encoderOutput:0.5-10 V · 4-20 mA · Programmable · SSI · CANopenProtection:IP65 → IP67/IP69 · M12 connector
ConfiguratorModelMeasurement RangeElectrical OutputAdditional FeaturesDatasheet
WB10ZGup to 2m0.5-10 V · 0.5-4.5 V · 4-20 mA (3-wire) · Programmable · SSI · CANopen · SAE J1939Zinc die cast + aluminum housing · IP65 · M12 connector · ~1.3 kg · Magnetic absolute encoder · Industry standard, economicalDatasheet (PDF) — WB10ZG
WB12up to 3m0.5-10 V · 0.5-4.5 V · 4-20 mA (3-wire) · Programmable · Redundant analogAluminum housing · IP67/IP69 · M12 connector · ~3 kg · Magnetic absolute encoder · Wash-down and outdoor compatibleDatasheet (PDF) — WB12
WB61up to 4m0.5-10 V · 0.5-4.5 V · 4-20 mA · Programmable · RedundantPBT + stainless steel housing · IP67/IP69 · M12 · ~2 kg · Magnetic absolute encoder · Lightweight mid-rangeDatasheet (PDF) — WB61
02

Long-Range Tape Encoder Models (5,000 mm — 20,000 mm)

Crane booms, tall lifts, large telescopic arms · noise-free transmission and small spool up to 20 metres

2 MODELS96 PRODUCTS
SHARED IN THIS GROUPStroke:5-20 metres · Magnetic absolute encoder · Resolution < 0.05 mmProtection:IP67/IP69 · M12 8-pin connectorOutput:Programmable + redundant analog/digital
ConfiguratorModelMeasurement RangeElectrical OutputAdditional FeaturesDatasheet
WB85up to 6m0.5-10 V · 0.5-4.5 V · 4-20 mA (3-wire) · Programmable · RedundantPBT + stainless steel housing · IP67/IP69 · M12 · max 2 kg · Magnetic absolute encoder · Mid-size craneDatasheet (PDF) — WB85
WB21up to 20m0.5-10 V · 0.5-4.5 V · 4-20 mA · Programmable · RedundantAluminum + PBT housing · IP67/IP69 · M12 · max 4 kg · Magnetic absolute encoder · Crane main boom + liftsDatasheet (PDF) — WB21
03

WB100 Series Water-Proof Tape Encoder Models

304 stainless + TPU · IP68/IP69K · ship decks, food wash-down, continuous submerged mining

1 MODELS48 PRODUCTS
SHARED IN THIS GROUPHousing:304 stainless steel · TPU coatedProtection:IP68/IP69K (continuous submersion + hot-water jet)Output:Redundant CANopen + SAE J1939 functional safety
ConfiguratorModelMeasurement RangeElectrical OutputAdditional FeaturesDatasheet
WB100Mup to 10m0.5-10 V · 0.5-4.5 V · 4-20 mA · Programmable · Redundant (analog + digital)304 stainless steel + TPU · IP68/IP69K · 2 m cable exit (standard) · 4.5-6.5 kg · Magnetic absolute encoder · Marine/wash-down/miningDatasheet (PDF) — WB100M
04

WBT Series Tape Encoder Models with Integrated Inclination Sensor

POSITAPE® WBT · position + MEMS inclination in one module (2019) · crane and aerial platform load chart

3 MODELS56 PRODUCTS
SHARED IN THIS GROUPWBT:Position + Inclination in one module (2019)Inclination:MEMS · ±60° static rangeOutput:CANopen / SAE J1939 — position + inclination in one message
ConfiguratorModelMeasurement RangeElectrical OutputAdditional FeaturesDatasheet
WBT61up to 4m with Inclination SensorPosition: 0.5-10 V · 4-20 mA · CANopen · SAE J1939 · Inclination: second channel on same output1500-4000 mm position range · Integrated MEMS inclination (±60°) · PBT housing · IP67 · M12 · 2019 innovation · Aerial platform standard sizeDatasheet (PDF) — WBT61
WBT85up to 6m with Inclination SensorPosition: 0.5-10 V · 4-20 mA · CANopen · SAE J1939 · Inclination: same output5000-6000 mm position · Integrated MEMS inclination · Crane mid-long telescopic boom · IP67 · M12Datasheet (PDF) — WBT85
WBT21up to 20m with Inclination SensorPosition: 0.5-10 V · 4-20 mA · CANopen · SAE J1939 · Inclination: same output8000-20000 mm position · Integrated MEMS inclination · Large crane main boom · IP67 · M12Datasheet (PDF) — WBT21

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