Manufacturer: Suntest Co.,Ltd
Model: EX-GYdT-R

Magnetostrictive Displaiacement Transducer

Model GY Series are “Displacement Transducers” employing magnetostrictive phenomena, especially the Wiedemann effect. An ultra-sonic wave is generated by a moving magnet operating near a magnetostrictive wave guide on which the sonic wave propagates up to the head of the transducer.
The propagation time is precisely measured by state of the art technology and then the absolute displacement transducer is operational.

[ Principle ]

The figure shows the fundamental principle of operation.
When a current pulse like A is given to the wave guide, it generates a circumferential magnetic field on the wave guide, then placement of the movable magnet (polarized axially) as shown, only the axial magnetic field of the magnet affecting the wave guide produces a resultant field as indicated by the dotted line.
The vector combination of these two fields produces torsional strain, a phenomenon known as the Wiedemann Effect.
It is a form of vibration and propagates along the wave guide in the form of a transverse ultra-sonic wave.
The GY series displacement transducers detect the propagation time of the ultra-sonic wave.

EX-GYdT-R Probe

Compact, Flameproof enclosure, with Controller

EX-GYdT-R probe is a level or displacement transducer of the flameproof enclosure type which has GYcRS circuit inside. Having the closed structure for sensor head achieves waterproof performance and compact. An explosion protection symbol is Exd II CT6, and you can use it in the most of the explosive gas atmosphere.
Form official approval pass symbol:

• No. TC16475 (rod diameter Φ10),
• No. TC16474 (rod diameter Φ13.8).

◆ Associated controller

• Analogue output :GYHC
• Digital output :GYDC-S1(page 102), GYDC-05
• IRDS-GY: When using the IRDM, you can connect with CC-Link, CC-Link IE Field, PROFIBUS, EtherNet/IP, and EtherCAT.
• DC-Q: MELSEC-Q built-in unit

Specifications

• The above mentioned accuracy applies to sensors with an effective stroke of 300mm or more. The specification of stroke less than 300mm is equal that of stroke 300mm.
• Resolution depends on associated controller.

Model No.

① Rod diameter
10 :Φ10
14 :Φ13.8

② Total rod length
□ :□mm
(Total rod length = head dead zone + effective stroke + tip dead zone)

③ Effective stroke
15mm〜5000mm

④ Head dead zone
50 :50mm (Std.)
□ :□mm (option) (specified by customers)

• Possible Min. length depends on the selected magnet or float.

⑤ Tip dead zone
□ :70mm/ 90mm/ 100mm (Std.)

□ :□mm (option)(specified by customers)

• Possible Min. length depends on the selected magnet or float.

⑥ Associated magnet or float

• Selecting magnet from page 116-118(GG)．
• Please consult our factory in case of requesting special magnet or float.
• This model code means only specifying associated magnet or float.
• Ordering magnet or float individually.

⑦ Cable type
S :standard cable
R :robot cable
W :waterproof cable

⑧ Cable length
□ :□m(max. 10m)

(*) In case of using extension cable sensor cable (m) + extension cable (m) ≦ 200m

• Please consider extension cable on page 120〜122.

⑨ Output
ZZ :depends on external controller

Dimensions

Probe

Cable