GK series impulse hammer is an excitation hammer which is built in a sensor to measure a natural vibration frequency or perform modal analysis of a mechanical structure.
In addition to the GK-3100 for general purpose usage, the GK-2110 is an ultra compact type weighing of 4.8 g for excitation of small and light-weighted parts. For excitation of large structures such as automobile’s framework structure, the large type of the GK-4110G20 weighing of 1.1 kg is suitable. You can choose any one depending on your requirements.
By mounting an accelerometer on a measurement object and hitting it with impulse hammer, excitation force signals from an impulse hammer and response acceleration signals from an accelerometer are input to an FFT analyzer to enable measurement of the frequency response function (natural frequency). Moreover, you can perform modal analysis of the object by sending the obtained frequency response function data to a PC in which modal analysis software is installed.
Features
GK-2110
GK-3100
GK-4110G20
System configuration
Overview Specifications
| GK-2110 | GK-3100 | GK-4110G20 | |
|---|---|---|---|
| Measurement range | 220 N | 2,200 N | 22,000 N |
| Detection element | Crystal | Crystal | Crystal |
| Sensitivity | 22.5 mV/N | 2.3 mV/N | 0.23 mV/N |
| Resonance frequency | 100 kHz or more | 31 kHz or more | 12 kHz or more |
| Excitation Frequency range (when hard tip in use) | Up to 20 kHz | Up to 8 kHz | Up to 1 kHz |
| Hammer weight | 4.8 g (when attached with a plastic hammer handle) | 140 g | 1,100 g |
| Head diameter | 6.3 mm | 15 mm | 51 mm |
| Tip diameter | 2.5 mm | 6.4 mm | 51 mm |
| Hammer length | 107 mm | 203 mm | 370 mm |
| Output connector | Aluminum
hammer handle (5-44 coaxial connector) Plastic hammer handle (directly-attached cable, miniature 10-32 connector) |
BNC(CO2) | BNC(CO2) |
| Output signal | Voltage output with CCLD compatible | Voltage output with CCLD compatible | Voltage
output with CCLD compatible Applicable to TEDS (Ver. 1.0) |
| Output impedance | 100 Ω or less | 100 Ω or less | 100 Ω or less |
| CCLD power supply | 2 to 20
mA, +18 to +30 VDC |
2 to 20
mA, +18 to +30 VDC |
2 to 20
mA, +18 to +30 VDC |
| Sensor amplifier | Sold separately: SR-2210 |
Provided as standard: Power supply
unit (sensor amplifier) |
Sold separately: SR-2210 |
| Cable | Provided as standard: GK-0132 (3 m, for aluminum hammer handle) | Provided as standard: Signal cable (3 m) Sold separately: GK-0122 (3 m) |
Sold separately: MX-100 series |
| Accessories |
Extender mass*1 Wax Impact tip (vinyl) 5-44=10-32 cable (3 m) Hammer handle (aluminum, plastic) Data sheet |
Storage case Extender mass Power supply unit (sensor amplifier) Cable for hammer (BNC, 3 m) Cable for signal output (BNC, 0.9 m) Impact tip set (super soft, soft, medium, hard) Data sheet |
(super soft, soft, medium, hard) Data sheet |
Options
Cable and Connector
| Product name | Model name | Applicable model |
|---|---|---|
| Signal cable (3m) | GK-0122 | GK-3100/4110G20 |
| Signal cable (3m) | GK-0132 | GK-2110 |
| Miniature/ BNC conversion connector | NP-0021 | GK-2110 |
Options for GK-2110
| Product name | Model name |
|---|---|
| Impact caps (5 pieces) | GK-0205 |
| Extender mass | GK-0211 |
| Plastic hammer handle | GK-0221 |
| Aluminum hammer handle | GK-0222 |
Options for GK-3100
| Product name | Model name |
|---|---|
| Medium tip | GK-0503 |
| Super soft tip | GK-0504 |
| Soft tip | GK-0505 |
| Hard tip | GK-0506 |
Options for GK-4110G20
| Product name | Model name |
|---|---|
| Medium tip | GK-0403 |
| Super soft tip | GK-0404 |
| Soft tip | GK-0405 |
| Hard tip | GK-0406 |
Frequency Response Characteristics according to Tip types
GK-2110
GK-3100
GK-4100G20
Revised:2017/09/22
