1. Introduction
This Benetech GM63B Vibration Meter utilizes the piezoelectric effect of polarized ceramics for its design. It is engineered for monitoring various vibrating mechanical facilities, particularly for rotating and reciprocating machinery. The device measures acceleration, velocity, and displacement, making it suitable for applications in mechanical manufacturing, electric power metallurgy, and general aviation.
2. Features
- LCD display shows measurement results and conditions directly.
- Measures acceleration (m/s² peak), velocity (mm/s rms), and displacement (mm p-p).
- Offers selective vibration characteristics (Hi-Low frequency selection).
- Incorporates a high-sensitivity vibration sensor for accurate measurements.
- Equipped with two probes (standard and magnetic) to adapt to different measurement requirements.
- Provides a magnetic probe for convenient use in situations where manual holding is difficult.
- Includes a low battery indication.
- Features an auto turn-off function.
- LCD backlight function for visibility in various lighting conditions.
- Maximum value hold function.
- Temperature unit selection (°C / °F).
- A/C output for external connection.
3. Package Contents
The Benetech GM63B Vibration Meter package typically includes the following items:
- Benetech GM63B Vibration Meter Unit
- Standard Vibration Probe
- Magnetic Vibration Probe
- Instruction Manual
- Protective Carrying Case
4. Product Overview
The Benetech GM63B Vibration Meter consists of a main unit with an LCD display and control buttons, and a detachable vibration sensor (probe). The sensor connects to the main unit via a cable.
5. Setup
5.1 Battery Installation
- Locate the battery compartment on the back of the meter.
- Open the battery compartment cover.
- Insert a 9V Alkaline battery, ensuring correct polarity.
- Close the battery compartment cover securely.
5.2 Sensor Connection
- Identify the sensor input port on the top or side of the main unit.
- Connect the desired vibration probe (standard or magnetic) to the sensor input port. Ensure a firm and secure connection.
6. Operating Instructions
6.1 Power On/Off
Press the ON/MEAS button to power on the device. The meter will automatically turn off after 60 seconds of inactivity to conserve battery life. To manually turn off, press and hold the ON/MEAS button.
6.2 Measurement Mode Selection
Press the A/V/D button to cycle through the measurement modes: Acceleration (m/s²), Velocity (mm/s), and Displacement (mm). The selected mode will be indicated on the LCD display.
6.3 Frequency Range Selection
Press the HI/LO button to switch between high and low frequency measurement ranges, as required by your application.
6.4 Maximum Value Hold
Press the MAX button to hold the maximum measured value on the display. Press it again to exit this function.
6.5 Temperature Unit Selection
Press the °C/°F button to toggle the temperature display between Celsius and Fahrenheit.
6.6 Taking Measurements
- Ensure the correct probe is attached and the meter is powered on.
- Select the desired measurement mode (Acceleration, Velocity, or Displacement) and frequency range (Hi/Lo).
- Firmly place the tip of the probe against the surface of the object to be measured.
- The measurement will be displayed on the LCD screen.
7. Maintenance
7.1 Cleaning
Wipe the meter and probes with a soft, dry cloth. Do not use abrasive cleaners or solvents, as they may damage the device.
7.2 Storage
When not in use, store the Benetech GM63B Vibration Meter and its accessories in the provided protective carrying case. Store in a dry environment, away from extreme temperatures and direct sunlight.
7.3 Battery Replacement
When the low battery indicator appears on the display, replace the 9V battery promptly to ensure accurate measurements and proper device function. Refer to section 5.1 for battery installation instructions.
8. Troubleshooting
- No display or device does not power on:
Check if the 9V battery is installed correctly and has sufficient charge. Replace the battery if necessary. - Inaccurate or inconsistent readings:
Ensure the vibration probe is securely connected to the main unit. Verify that the probe is firmly placed against the object being measured. Check if the correct measurement mode (A/V/D) and frequency range (Hi/Lo) are selected for the application. - LCD backlight not working:
The backlight function is typically automatic or activated with specific button presses. If it fails, ensure the battery has sufficient power.
9. Specifications
The following table details the technical specifications of the Benetech GM63B Vibration Meter:
| Parameter | Specification |
|---|---|
| Vibration pickup | Piezoelectric ceramic accelerometer (shear-type) |
| Measurement range of acceleration | 0.1 ~ 199.9 m/s² peak |
| Measurement range of velocity | 0.1 ~ 1999.9 mm/s rms |
| Measurement range of displacement | 0.001 ~ 1.999 mm p-p (Velocity and displacement range is limited by acceleration 199.9 m/s²) |
| Measurement accuracy | ±5% ±2 digits |
| Measurement frequency range of acceleration | 10 Hz ~ 1 KHz (LO), 1 KHz ~ 15 KHz (HI) |
| Measurement frequency range of velocity | 10 Hz ~ 1 KHz (LO) |
| Measurement frequency range of displacement | 10 Hz ~ 1 KHz (LO) |
| Displays update cycle | 1 second |
| LCD display | 3 1/2 digits display |
| Single output | AC output 2 V peak (display full scale), Load impedance 10 KΩ or more, earphones can be connected |
| Power supply | 9V battery |
| Stand-by current | ≤ 15 µA |
| Operating current | ≤ 25 mA |
| Battery life | 20 H continuous use |
| Auto power-off function | Turns off automatically after 60 seconds |
| LCD backlight function | 7 seconds |
| Operating temperature range | 0 ~ 40°C |
| Operating humidity range | 30 ~ 90% RH |
| Low battery indication | 6.4 V ± 0.2 V |
| Dimensions | 72 x 35 x 145 mm |
| Weight | 229 g (not including battery) |
| Temperature range | -10 ~ 80°C |
| Temperature accuracy | ±2°C |
10. Warranty and Support
For technical assistance, warranty claims, or any product-related inquiries, please contact Benetech customer service. Refer to the official Benetech website or your purchase documentation for contact information and detailed warranty terms.
