Products

GI-D120 Series  0-10000mm Measurement Range Draw Wire Encoder

Draw wire sensors are low-cost, compact sensors which accurately measure the position or change in position of objects. Core components of a draw wire sensor are a precision measuring wire and a sensor element (e.g. potentiometer or encoder), which convert the path change into a proportional electrical signal. The maintenance-free draw wires are particularly quick and easy to assemble and are used because of their reliability in all areas of industry.

How does Draw Wire Sensor work?

String pots or cable-extension transducers are composed of four main components inside the housing:

1. Flex High Strength Stainless Steel Cable (string or wire rope);
2. Constant Diameter Spool (drum);
3. High Torque, Long-life Power Coil Spring;
4. Rotational Potentiometric Precision Sensor.   

Inside the transducer’s housing, a flexible high strength stainless steel cable is wound tightly around a precisely machined constant diameter cylindrical drum (or spool) that turns as the measuring cable reels and un-reels. To maintain wire tension and retraction, a spring is coupled to the drum. The spool is then coupled to the shaft of a rotational potentiometric precision sensor (or an encoder).  As the sensor string extends linearly along with the moving object, it causes the drum and sensor shafts to rotate.

In order to take displacement or position measurements, the sensor’s body is mounted to a fixed surface and the end of the flexible cable is connected to the object in motion. As the object changes its positions, the cable un-reels and reels and the rotating spool drives the shaft of the sensing device generating an electrical signal that is proportional to the cable’s linear extension or displacement. For speed measurement, a tachometer is required.

The draw wire displacement sensor can be hooked up as a three-wire tapped potentiometer (voltage divider) or can be packaged with embed electronics to produce an output signal in a useful form, such as a variable voltage 0-10 VDC, variable current 4-20mA, pulse encoder, Fieldbus (Profibus, DeviceNet, and Canbus) and RS232 / RS-485 communications. The sensor output signal can then be sent to a signal conditioner for amplification, local display or readout, a PLC or data acquisition system (DAQ). 

GI-D120 Series encoder is a 0-10000mm measurement range high accuracy draw wire sensor. It provides optinal outputs: Analog-0-10v, 4 20mA;  Incremental: NPN/PNP open collector, Push pull, Line Driver; Absolute:Biss, SSI, Modbus, CANopen, Profibus-DP, Profinet, EtherCAT, Parallel etc. Wire Rope Dia.:0.6mm, Linear Tolerance:±0.1%,The aluminum housing provides a reliable sensor ideal for industrial environments. Being both economical and compact, these are appropriate for a wide variety of applications.D120 Series provide extremely precise measurements because of the inherent accuracy of the encoders(both absolute and incremental encoders) and the rugged construction ensures reliable performance even under extreme conditions. Measurements are highly accurate, reliable and the systems have very long lifetimes without losing its inherent characteristics.

Certificates: CE,ROHS,KC,ISO9001

Leading time: Within a week after full payment; Delivery by DHL or other as per discussed;

▶Size: 147x147x130mm;

▶Measurement Range: 0-10000mm;

▶Supply Voltage:5v,8-29v;

▶Output Format: Analog-0-10v, 4-20mA;

Incremental:NPN/PNP open collector, Push pull, Line Driver;

Absolute:Biss, SSI, Modbus, CANopen, Profibus-DP, Profinet, EtherCAT, Parallel etc.

▶Widely used in various fields of automatic control and measurement system,such as machinery manufacturing, shipping, textile, printing, aviation, military industry Testing machine, elevator, etc.

▶Vibration-resistant, corrosion-resistant, pollution-resistant;

Packaging Details
The rotary encoder is packed in standard export packaging or as required by buyers;

FAQ:
1) How to select an encoder?
Before ordering encoders, you could clearly know which type of encoder you may need.
There are incremental encoder and absolute encoder, after this, our sale-service department would better work for you.
2) What specifications are requested before order an encoder?
Encoder type—————-solid shaft or hollow shaft encoder
External Diameter———-Min 25mm, MAX 100mm
Shaft Diameter—————Min shaft 4mm, Max shaft 45mm
Phase & Resolution———Min 20ppr, MAX 65536ppr
Circuit Output Mode——-you could choose NPN,PNP,Voltage, Push-pull,Line driver, etc
Power Supply Voltage——DC5V-30V
3) How to choose a right encoder by yourself ?
Exact Specification Description
Check The Installation Dimensions
Contact Supplier to get more details
4) How many pieces to start ?
 The MOQ is 20pcs .Less quantity is also ok but the freight  is  higher.
5) Why choose “Gertech” Brand Encoder?
All encoders are designed and developed by our own engineer team since year 2004,and most of the electronic component of encoders are imported from overseas market. We own the Anti-static and no-dust workshopand our products pass the ISO9001. Never let our quality down,because quality is our culture.
6) How long is your lead time?
Short lead time—-3 days for samples,7-10days for mass production
7) what is your guarantee policy?
1year warranty and life-long technical support
8)What are the benefit if we become your agency ?
Special prices, Market protection and supporting.
9)What is the process to become Gertech agency?
Please send us enquiry,we will contact you as soon as possible.
10)What is your production capacity?
We produce 5000pcs every week.Now we are building second phrase production line.