Manufacturer: Suntest Co.,Ltd
Model: GYHTR

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.+

GYHTR Probe

High ambient temperature (120℃)
high accuracy type(detachable probe element)

GYHTR probe is designed to operate at high ambient temperature up to 120°C, including sensor head. Between probe and controller, RS-422 differential line driver transmission, providing robustness against electrical noise, is used. The inside probe element can be detached from the outer housing.

◆ Associated controller

• Analogue output :GYHC
• Digital output :GYDC-S1 , 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

Model No.

① Effective stroke
15〜1000mm

② Head dead zone
50 : 50mm (Std.)
□ : □mm ( option ) ( specified by customers )
・Possible Min. length depends on the selected magnet or float.

③ Tip dead zone
□ : 70mm/ 90mm/ 100mm(Std.)

□:□mm ( option ) ( specified by customers )
・Possible Min. length depends on the selected magnet or float.

④ Thread / Rod diameter
M :M24xP1.0, rod Φ10 (Std.)
N :M18xP1.5, rod Φ10
U :3/4-16UNF-3A, rod Φ10
M8 :M24xP1.0, rod Φ8
N8 :M18xP1.5, rod Φ8
U8 :3/4-16UNF-3A, rod Φ8
M14 :M24xP1.0, rod Φ13.8
Z :Probe inside element only (without outer housing)

⑤ Associated magnet or float

・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.

⑥Cable connection
HG□F : pigtail / cable end : free
HG□A : pigtail / cable end : with connector for relay
(Operating temp. range of relay connector is max. +80°C)
(□ : cable length(m)、Max.10m)(*)

(*) In case of using extension cable
sensor cable (m) + extension cable (m) ≦ 200m
・Please confirm extension cable on page 120〜122.

⑦ Output
00:depends on external controller

⑧ Option
blank :without option
SRT :SRT option
・Please confirm the details of options on page 114.

Dimensions

Probe

Detachable probe element

Cable

• shield should be connected to shield terminal of the controller.