Suntest
Suntest GY Series GYMA Probe
Manufacturer: Suntest Co.,Ltd
Model: GYMA
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.
GYMA Probe.
Compact analogue output (4〜20mA only)
GYMA has the same appearance as GYMS (compact head)
and is all-in-one series.
We achieved downsizing of all-in-one series by the latest circuit design.
GYMA has high reliability with IP67 like GYMS.
Only 4〜20mA output is available.
- Noise cancellation
- GPM setting
Specifications
| Non-linearity | ≦±0.025%FS Typ. |
|---|---|
| Resolution | ≦0.1mm |
| Repeatability | ≦±0.1mm |
| Temp. drift | ≦±0.03%FS/°C |
| Voltage output | 0〜10V or 10〜0V (output current : Max.5mA, load : Min.2kΩ) |
| Current output | 4〜20mA or 20〜4mA (load : Max.500Ω) |
| Alarm output | not available |
| Power supply | +24(±2)VDC (100mA) |
| Sampling freq. | Std. 1kHz (Total rod length : 1300mm) |
| Max. Pressure | 35MPa (probe rod) |
| Operating temp. | -20°C〜+80°C |
| Storage temp. | -40°C〜+80°C |
| Vibration | 6G (or 40Hz 2mmPP) |
| Shock | 50G (2msec) |
| IP grade | IP67 |
- 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.
Model No.
① Effective stroke
15〜3000mm
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.
| □ | tip DZ | magnet | float |
|---|---|---|---|
| 70 | 70mm | M2PN, M0SM, M0LM, M3, M11N, BA | F25N, F28N |
| 90 | 90mm | F28S, F30S | |
| 100 | 100mm | T144, T163 | F40S, F42S, F50S, F54S |
④ Thread / Rod diameter
J8 : M20xP1.0, rod Φ8(Std.)
L8 : M16xP2.0, rod Φ8
E8 : M20xP1.5, rod Φ8
N : M18xP1.5, rod Φ10
U : 3/4-16UNF-3A, rod Φ10
K6 : M16xP1.5, rod Φ6
・In case of an effective stroke 1001mm or more.
・The rod Φ10 would be recommended.
⑤ Associated magnet or float
| magnet | float |
|---|---|
| M2PN :No.2PN M0SM :No.ΦSPM M0LM :No.ΦLPM M3 :No.3 M11N :No.11N T144 :No.T14-M4 T163 :No.T16-M3 BA :No.2KYN-17-LG | F28S :Φ28 SS316 F30S :Φ30 SS316L F40S :Φ40 SS316(B) F42S :Φ43 SS316 F50S :Φ50 SS316L F54S :Φ54 SS304 F25N :RF-A10 plastic F28N :RF-A6 plastic |
・ 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.
・ In case of an effective stroke 2001mm or more, “No.2KYN-17-LG”
magnet (page 116) would be recommended.
⑥ Cable connection
G□F :pigtail / cable end : free
G□A :pigtail / cable end : with connector for relay
(□:cable length(m)、Max.10m)(＊)
CN :connector
(*) In case of using extension cable
Voltage output:sensor cable (m) + extension cable (m) ≦ 10m
Current output : sensor cable (m) + extension cable (m) ≦ 100m
・Please confirm extension cable on page 120〜122.
・Ordering loose mating connector individually.
⑦ Position output(OUT1)
AD :0〜10V(When magnet moves toward tip, output increase)
AR :10〜0V(When magnet moves toward tip, output decrease)
BD :4〜20mA(When magnet moves toward tip, output increase)
BR :20〜4mA(When magnet moves toward tip, output decrease)
Dimensions
Probe
Connector
GYMA applicable cables and wires
| Connector type | Pigtail cable type | |||
|---|---|---|---|---|
| Applicable cables | GPM use | Applicable cables | GPM use | |
| Voltage output | 4 core | × | 5 core | 〇 |
| Current output | 4 core | 〇 | 4 core | 〇 |
Applicable cable outer diameter
- 4 core : about φ5mm
- 5 core : about φ5.8mm
Applicable Wire Size Outer Diameter
- 4 core : 0.54mm
- 5 core : 0.54mm
Connector tables
Voltage output (connector)
| Current output (connector/pigtail) | Voltage output (pigtail) | ||||
|---|---|---|---|---|---|
| Contact pin | Lead wire color | Function | Lead wire color | Function | |
| 1 | Red | +24V Power supply | Red | +24V Power supply | |
| 2 | White | 0V Power supply | Red/White | 0V Power supply | |
| 3 | Black | Voltage Output | Black | Voltage Output | |
| 4 | Green | Output common | Black/White | Output common | |
| – | Shield | Shield | Green | Communication line | |
Shield should be connected to 0V or frame ground by the user.
