Cable length measuring transducers

What is a cable length-measuring transducer?

Cable length measuring transducers, also called cable extension transducers or line distance transducers, allow measuring linear change in location and to follow by using  track cable of a given object’s movement. Cable transducer is an...

What is a cable length-measuring transducer?

Cable length measuring transducers, also called cable extension...

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Products that are marked "On Order" in the "Available Quantity" column are usually not in stock. Such products are available for purchase, however, due to their limited customer base, they usually have higher minimum quantities. DACPOL offers products that are not in stock for the following reasons: DACPOL currently has a large number of electronic components in stock and adds new products every day, however, tens of thousands of additional components and their various variants are available from our suppliers. Even though it is unreasonable to have all these products in stock due to the limited sales, we believe that it is in the best interest of our customers to make them available. Our goal is to inform customers about the maximum number of products available and enable them to make decisions based on specifications, prices, availability, required minimums and our technical advice. Please note that selecting the "In Stock" checkbox may limit the display to only products available for delivery straight from the shelf.
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picture_as_pdf Line distance transducer PT1 Celesco Line distance transducer PT1 SEE IT -- On Order --
picture_as_pdf Encoder wire SM Celesco Link Encoder SM SEE IT -- On Order --
picture_as_pdf Line distance transducer SG series Celesco SG Link Transducer SEE IT -- On Order --
-- Enkoder linkowy SR1 Celesco SR1 Link Encoder SEE IT -- On Order --
picture_as_pdf Line distance transducer - way of operation, review of available types Celesco Line distance transducer - way of operation, review of available types SEE IT -- On Order --
picture_as_pdf Line distance transducer SP1 series Celesco Line distance transducer SP1 series SEE IT -- On Order --
picture_as_pdf Line distance transducer PT9000EXT Celesco Line distance transducer PT9000EXT SEE IT -- On Order --
picture_as_pdf NMS300 Digital Readout Package Newall Measurement Systems Ltd NMS300 Digital Readout Package SEE IT -- On Order --
picture_as_pdf Line distance transducer PT5 Celesco Line distance transducer PT5 SEE IT -- On Order --
picture_as_pdf Line distance transducer PT8000 Celesco Line distance transducer PT8000 SEE IT -- On Order --
picture_as_pdf Line distance transducer PT9000 Celesco Line distance transducer PT9000 SEE IT -- On Order --
picture_as_pdf SPD-25-3 Linkowy przetwornik odległości IP67 Celesco SPD-25-3 Link Distance Transducer IP67 SEE IT SPD-25-3 On Order 4 - 20 mA (2-wire) / 0 - 10 V DC
picture_as_pdf SPD-12-3 Linkowy przetwornik odległości IP67 Celesco SPD-12-3 Link Distance Transducer IP67 SEE IT SPD-12-3 On Order 4 - 20 mA (2-wire) / 0 - 10 V DC
picture_as_pdf SP3-4 Linkowy przetwornik odległości Celesco SP3-4 Link distance transducer SEE IT SP3-4 On Order 4 - 20 mA (2-wire) / 0 - 10 V DC
picture_as_pdf SP3-12 Linkowy przetwornik odległości Celesco SP3-12 Link distance transducer SEE IT SP3-12 On Order 4 - 20 mA (2-wire) / 0 - 10 V DC
picture_as_pdf SP2-4 Linkowy przetwornik odległości Celesco SP2-4 Link distance transducer SEE IT SP2-4 On Order dzielnik napięcia (potencjometr)
picture_as_pdf SP1-4-3 Linkowy przetwornik odległości IP67 Celesco SP1-4-3 Link Distance Transducer IP67 SEE IT SP1-4-3 On Order dzielnik napięcia (potencjometr)
picture_as_pdf SP2-12 Linkowy przetwornik odległości Celesco SP2-12 Link distance transducer SEE IT SP2-12 On Order dzielnik napięcia (potencjometr)
picture_as_pdf SP1-50-3 Linkowy przetwornik odległości IP67 Celesco SP1-50-3 Link Distance Transducer IP67 SEE IT SP1-50-3 On Order dzielnik napięcia (potencjometr)
picture_as_pdf SP2-25 Linkowy przetwornik odległości Celesco SP2-25 Line Distance Transducer SEE IT SP2-25 On Order dzielnik napięcia (potencjometr)
picture_as_pdf SPD-50-3 Linkowy przetwornik odległości IP67 Celesco SPD-50-3 Link Distance Transducer IP67 SEE IT SPD-50-3 On Order 4 - 20 mA (2-wire) / 0 - 10 V DC
-- SR1A-125 Linkowy przetwornik odległości IP67, NE Celesco SR1A-125 Link Distance Transducer IP67, NE SEE IT SR1A-125 On Order dzielnik napięcia
picture_as_pdf SPD-4-3 Linkowy przetwornik odległości IP67 Celesco SPD-4-3 Link Distance Transducer IP67 SEE IT SPD-4-3 On Order 4 - 20 mA (2-wire) / 0 - 10 V DC
picture_as_pdf SE1-25 Linkowy przetwornik odległości Celesco SE1-25 Line distance transmitter SEE IT SE1-25 On Order enkoder inkrementacyjny
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What is a cable length-measuring transducer?

Cable length measuring transducers, also called cable extension transducers or line distance transducers, allow measuring linear change in location and to follow by using  track cable of a given object’s movement. Cable transducer is an electromechanical device from the automation sector, working based on a change in linear movement to the proportional to relocation electric signal, that is, a countable change is resistance or number of impulses. They have various ranges of distance, even from 100 mm to several dozens of meters.

Line distance transducer is composed of:

  • measuring cable - often made of highly flexible steel sennit,
  • drum powered by innerspring engine,
  • precise spool,
  • innerspring to tighten the spool,
  • measuring sensor - multi turn potentiometer or incremental encoder.  

How do cable extension transducers work? 

Transducer of this type works based on a rolling mechanism, which guarantees stable forward tension strength of the cable. Clutch connects a multi turn potentiometer with a signal formatting electronics. There are also motorized cable transducers, mostly used for very high measurement ranges. 

A way of functioning of cable relocation and reposition sensor is based on placing the end of the cable on a moving measured object, while the transducer has to be connected to a stable base. The movement of an object makes the spool move and the rotation reader transfers this activity as a proportional output signal, which later can be transferred to the control or display on a reader.

Types of transducers:

Transducers with a potentiometer or encoder sensors - in case of using the encoder (rotation incremental or code) the absolute output with Gray’s code are used or serial outputs in SSI/CANopen standard. 

Transducers with resistance output (sensor is the potentiometer) - precise potentiometer provides absolute signal.

Pulse transducers (in case of an incremental encoder) and cable output transducers with voltage or current signal.

In which applications cable extension transducers can be beneficial?

  • Assets of cable extension transducers: 
  • Measurements in hard to reach places,
  • Simplicity of montage,
  • Resilience to vibrations,
  • Possibility of usage in harsh environments e.g. with high temperatures.

Applications of cable length measuring transducers:

  • Cable length measuring transducers can be used in sectors like industrial automatics, medical technology, control of materials, building and vehicle safety, and control over hydraulics. 
  • Some of the most common applications are: 
  • Control of the extension of telescopic lift arms or lift trucks. 
  • Testing devices in automotive.
  • Injection molding machines, printers, cutting machines, plane lifts.
  • Medical and rehabilitation devices, X-ray devices.
  • Control over relocation of pipe connections, measuring liquid’s level.