Line distance transducer - way of operation, review of available types
Line distance transducer - way of operation, review of available types

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Manufacturer: Celesco

Line distance transducer - way of operation, review of available types

A Cable-Extension Transducer, sometimes also known as a string pot, a draw wire senor, a string encoder or a yo yo pot, is a device used to detect and measure linear position and velocity using a flexible cable and a spring-loaded spool.

Simply mount the transducer's body to a fixed surface and attach the stainless steel cable to the movable object. As the object moves, the transducer produces an electrical signal that is proportaional to the cable's linear extension or velocity. This signal can then be sent to a display, a PLC or data aquisition system
Cable-Exension Tranducers (CETs) are composed of four main parts:
  1. Measuring Cable
  2. Spool
  3. Spring
  4. Rotational Sensor

Measuring the movement and position of objects is easy with CETs.

CETs can be installed in minutes, fitted into prcarous or tight areas and they do not require perfectly parallel alignment. They also offer great flexibility, a small size to measurement ratio and they cost less than rod or wand-type measurement devices.

CETs can be used in a wide variety of applications including industrial factory automation, high-tech medical devices, structural and automotive testing, die-casting or injection molding, hydraulic cylinder control or just about anything else you can think of...

  
rysunek

Celesco offers all industry-standard output signals, these include:

  • Potentiometric (Voltage Divider)
  • 0...10 Volts DC
  • 4...20 mA (2-wire)
  • 0...20 mA (3-wire)
  • Incremental Encoder (Quadrature)
  • Absolute Encoder (ask factory)
  • RS232/RS422 Communications
  • DeviceNET®
  • CANbus J1939

Measuring the movement and position of objects is easy with CETs.

CETs can be installed in minutes, fitted into prcarous or tight areas and they do not require perfectly parallel alignment. They also offer great flexibility, a small size to measurement ratio and they cost less than rod or wand-type measurement devices.

CETs can be used in a wide variety of applications including industrial factory automation, high-tech medical devices, structural and automotive testing, die-casting or injection molding, hydraulic cylinder control or just about anything else you can think of...
Group MTAMT2SPPT1SZG65PT100

Compact group (DO 2500 mm)
I/O rysunek rysunek rysunek rysunek rysunek rysunek
 

Technical data
Measurement range  [mm] 125 750 1250 1250 1250 2500
Accuracy 0,15% 0,25...0,02% 1,00...0,25% 0,28...0,02% 0,02% 0,28...0,02%
Repeatability 0,02% 0,02% 0,05% 0,05...0,02% 0,02% 0,05...0,02%
 

Technical data
Casing material Anode Aluminium Anode Aluminium Plastic
(polycarbonate)		 Anode Aluminium
/ABS		 Anode Aluminium Anode Aluminium
Protection level IP65 IP50 IP50 IP65...67
depends on execution		 IP65 IP50

Casing
Noble steel covered with nylon • • • • - •
Noble steel - - - - - -
Thermoelastic plastic - - - - - -
 

Measurement cord
Potentiometer • • • • - •
Tachometer - - - - - -
0...10VDC - - - • - •
4-20 mA - - - • - •
Incremental encoder - • • • • •
RS 232 - - - • - -
CAN Bus - - - • - -
Devicenet - - - • - -
Absolute encoder - - - - (•) -
 

Electric connection
Cable for soldering - • • - - -
Wires • - - - - -
Cable for devices • • • • (•) •
Plug - • - • • •
 

Properties
Preferences - - - Protection against recoil - -
Typical application Measurements in limited area Measurements with high acceleration Universal, resistant from axe shifts and free cord lose. Mechanical materials or vehicles tests without high acceleration.  Elevators, Vehicles,
Platforms		 Mechanical tests in laboratories
 
Group PT5PT8000SZG81SZG122PT9000PT9000er

 Group for industrial applications(DO 42500 mm)
  rysunek rysunek rysunek rysunek rysunek rysunek
 
technical data
Measurement range  [mm] 6250 1500 6250 4300 13750 42500
Accuracy 0,28...0,02% 0,28...0,02% 0,02% 0,02% 0,12...0,02% 0,05...0,02%
Repeatability 0,05...0,02% 0,05...0,02% 0,02% 0,02% 0,05...0,02% 0,05...0,02%
 
Technical data
Casing material Anode Aluminium Powder painted aluminium or noble steel Anode Aluminium Anode Aluminium Covered aluminium  or noble steel Covered aluminium  or noble steel
Protection level IP65...67* IP65...68* IP65 IP65 IP65...68* IP65...67*
* Depends on solution
 

Casing
Noble steel covered with nylon. • • • • • •(stal szlachetna
przy dużych
odległościach
pomiarowych)
Noble steel • • - • • -
Thermoelastic plastic • • - • • -
 

Measurement cord
Potentiometer • • • • • •
Tachometer • - - - • -
0...10VDC • • - • • •
4-20 mA • • - • • •
Incremental encoder • • • • • •
RS 232 • • - • • •
CAN Bus • • - - • •
Devicenet • • - • • •
Absolute encoder - - (•) (•) - -
 

Electrical connections
Cable for devices • • (•) (•) • •
Plug • • • • • •
 
Properties
Preferences - 1) different cables lead outs
2) EX version
3) integrated brushes		 - - 1) higher cable withdrawal force
2) EX version
3)brush system
4) cable blockade system		 EX version
Typical applications Difficult applications with high accelerations and big cycles quantity. Reliable models for difficult industrial applications: Elevators,  scenes, vehicles ,hydraulic components, telescope applications, applications with big measurement distances.
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A Cable-Extension Transducer, sometimes also known as a string pot, a draw wire senor, a string encoder or a yo yo pot, is a device used to detect and measure linear position and velocity using a flexible cable and a spring-loaded spool.

Simply mount the transducer's body to a fixed surface and attach the stainless steel cable to the movable object. As the object moves, the transducer produces an electrical signal that is proportaional to the cable's linear extension or velocity. This signal can then be sent to a display, a PLC or data aquisition system
Cable-Exension Tranducers (CETs) are composed of four main parts:
  1. Measuring Cable
  2. Spool
  3. Spring
  4. Rotational Sensor

Measuring the movement and position of objects is easy with CETs.

CETs can be installed in minutes, fitted into prcarous or tight areas and they do not require perfectly parallel alignment. They also offer great flexibility, a small size to measurement ratio and they cost less than rod or wand-type measurement devices.

CETs can be used in a wide variety of applications including industrial factory automation, high-tech medical devices, structural and automotive testing, die-casting or injection molding, hydraulic cylinder control or just about anything else you can think of...

  
rysunek

Celesco offers all industry-standard output signals, these include:

  • Potentiometric (Voltage Divider)
  • 0...10 Volts DC
  • 4...20 mA (2-wire)
  • 0...20 mA (3-wire)
  • Incremental Encoder (Quadrature)
  • Absolute Encoder (ask factory)
  • RS232/RS422 Communications
  • DeviceNET®
  • CANbus J1939

Measuring the movement and position of objects is easy with CETs.

CETs can be installed in minutes, fitted into prcarous or tight areas and they do not require perfectly parallel alignment. They also offer great flexibility, a small size to measurement ratio and they cost less than rod or wand-type measurement devices.

CETs can be used in a wide variety of applications including industrial factory automation, high-tech medical devices, structural and automotive testing, die-casting or injection molding, hydraulic cylinder control or just about anything else you can think of...
Group MTAMT2SPPT1SZG65PT100

Compact group (DO 2500 mm)
I/O rysunek rysunek rysunek rysunek rysunek rysunek
 

Technical data
Measurement range  [mm] 125 750 1250 1250 1250 2500
Accuracy 0,15% 0,25...0,02% 1,00...0,25% 0,28...0,02% 0,02% 0,28...0,02%
Repeatability 0,02% 0,02% 0,05% 0,05...0,02% 0,02% 0,05...0,02%
 

Technical data
Casing material Anode Aluminium Anode Aluminium Plastic
(polycarbonate)		 Anode Aluminium
/ABS		 Anode Aluminium Anode Aluminium
Protection level IP65 IP50 IP50 IP65...67
depends on execution		 IP65 IP50

Casing
Noble steel covered with nylon • • • • - •
Noble steel - - - - - -
Thermoelastic plastic - - - - - -
 

Measurement cord
Potentiometer • • • • - •
Tachometer - - - - - -
0...10VDC - - - • - •
4-20 mA - - - • - •
Incremental encoder - • • • • •
RS 232 - - - • - -
CAN Bus - - - • - -
Devicenet - - - • - -
Absolute encoder - - - - (•) -
 

Electric connection
Cable for soldering - • • - - -
Wires • - - - - -
Cable for devices • • • • (•) •
Plug - • - • • •
 

Properties
Preferences - - - Protection against recoil - -
Typical application Measurements in limited area Measurements with high acceleration Universal, resistant from axe shifts and free cord lose. Mechanical materials or vehicles tests without high acceleration.  Elevators, Vehicles,
Platforms		 Mechanical tests in laboratories
 
Group PT5PT8000SZG81SZG122PT9000PT9000er

 Group for industrial applications(DO 42500 mm)
  rysunek rysunek rysunek rysunek rysunek rysunek
 
technical data
Measurement range  [mm] 6250 1500 6250 4300 13750 42500
Accuracy 0,28...0,02% 0,28...0,02% 0,02% 0,02% 0,12...0,02% 0,05...0,02%
Repeatability 0,05...0,02% 0,05...0,02% 0,02% 0,02% 0,05...0,02% 0,05...0,02%
 
Technical data
Casing material Anode Aluminium Powder painted aluminium or noble steel Anode Aluminium Anode Aluminium Covered aluminium  or noble steel Covered aluminium  or noble steel
Protection level IP65...67* IP65...68* IP65 IP65 IP65...68* IP65...67*
* Depends on solution
 

Casing
Noble steel covered with nylon. • • • • • •(stal szlachetna
przy dużych
odległościach
pomiarowych)
Noble steel • • - • • -
Thermoelastic plastic • • - • • -
 

Measurement cord
Potentiometer • • • • • •
Tachometer • - - - • -
0...10VDC • • - • • •
4-20 mA • • - • • •
Incremental encoder • • • • • •
RS 232 • • - • • •
CAN Bus • • - - • •
Devicenet • • - • • •
Absolute encoder - - (•) (•) - -
 

Electrical connections
Cable for devices • • (•) (•) • •
Plug • • • • • •
 
Properties
Preferences - 1) different cables lead outs
2) EX version
3) integrated brushes		 - - 1) higher cable withdrawal force
2) EX version
3)brush system
4) cable blockade system		 EX version
Typical applications Difficult applications with high accelerations and big cycles quantity. Reliable models for difficult industrial applications: Elevators,  scenes, vehicles ,hydraulic components, telescope applications, applications with big measurement distances.
Less
Read more
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