Suntest
Suntest GY Series GYAF1 Probe
Manufacturer: Suntest Co.,Ltd
Model: GYAF1
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.
GYAF1 Probe.
Flat head, Analogue output
GYAF1 probe is an all-in-one sensor with the flange shape.
You can get a voltage or current analog signal proportional to magnet position only by applying a 24VDC power supply directly to it.
Reversed output or bipolar output can be supported as well.
The flat head permits a miniaturized application, and the flange makes the installation easier, compared with the conventional screw type probes.
Specifications
| Non-linearrity | ≦0.025％FS Tpy. |
|---|---|
| Resolution | ≦0.01%FS |
| Repeatability | ≦±0.01%FS |
| Temp. | ≦±40ppmFS/°C |
| Voltage output | 0〜10V or 10〜0V (output current: Max. 5mA, load: Max. 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 (up to stroke 1000mm) |
| Max. Pressure | 35MPa (probe rod) |
| Operating temp. | -20°C〜+80°C |
| Storage temp. | -40°C〜+80°C |
| Vibration | 6G ( or 40Hz 2mmPP) |
| Shock | 50G (2ms) |
| IP grade | IP67 (option: IP68) |
- 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.)
| □ | tip DZ | magnet | float |
|---|---|---|---|
| 70 | 70mm | M2PN, M3, M11N, BA | F28N |
| 100 | 100mm | T144, T163 | F40S, F42S, F50S, F54S |
□: □mm (option)(specified by customers)
・Possible Min. length depends on the selected magnet or float.④ Mount / Rod diameter
F: flange, rod Φ10 (Std.)
⑤ Associated magnet or float
| magnet | float |
|---|---|
| M2PN: No.2PN (Std.) M3 :No.3 M11N :No.11N T144 :No.T14-M4 T163 :No.T16-M3 BA :No.2KYN-17-LG | F40S :Φ40 SS316(B) F42S :Φ43 SS316L F50S :Φ50 SUS316L F54S :Φ54 SS304 F28N :RF-A6 plastic |
・Please consult if you select a magnet or a float of other than above.
・This Model code means only specifying associated magnet or float.
・When you need a magnet or float, please order separately.
⑥ Cable connection
CN: connector
G□F: pigtail / cable end : free
G□A: pigtail / cable end : with connector for relay
(□:cable length(m)、Max.10m) (*)
＜Water proof option＞(recommendation : pigtail (WP3G))
WPCN: submersible connector type
WP3G□F: pigtail / cable end : free
WP3G□A: pigtail / cable end : with connector for relay
(□: cable length(m)、Max.10m) (*)
(*) 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 consider extension cable on page 112.
・In case that you need loose mating connector, ordering connector (straight only)
separately is necessary.
⑦ Position output
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)
CD□□: bipolar output(-□V〜+□V)
(for example CD10: -10V〜+10V)
CR□□: bipolar output(+□V〜-□V)
(for example CR05: +5V〜-5V)
Dimensions
Connector type (Code :CN)
Pigtail type (Code: G※)
Cable
| Wire color | Pin number | Function |
|---|---|---|
| red | 1 | +24VDC |
| shield | 2 | shield |
| white | 3 | 0V |
| green | 4 | COM |
| black | 5 | Voltage |
| blue | 6 | (Current) |
| brown | 7 | N.C. |
| yellow | 8 | N.C. |
Shield should be connected with 0V at user side.
Note
Connector type
CN : Sanwa SNW-1607-PCF (Material: zinc alloy fluoroplastic),
WPCN : Tajimi TC1108-12A10-7F(8,6) (Material: brass with Ni plating)
Suitable cable diameter: Φ6.6 ~ Φ7.5 (Model code: G*), Wire size: ≤ 0.5mm²
The figure in ＜＞ is the figure of IP68 type (WPCN, WP3G＊).
Applicable O ring type is P=14. Back-up ring is strongly suggested in usage.
Water proof option (WP3G＊) has a protection tube.
Please refer the dimensions on page 113.
