PEAKMETER PM6208A Digital Contact Tachometer

1. Introduction

The PEAKMETER PM6208A is a high-precision digital contact tachometer designed for measuring rotational speed (RPM) and linear surface speed. It offers a wide measurement range, data storage capabilities, and various unit selections, making it suitable for a variety of industrial and mechanical applications. This manual provides detailed instructions for the safe and effective use of your device.

Figure 1: PEAKMETER PM6208A Digital Contact Tachometer and included accessories.

2. Package Contents

Please check the package carefully to ensure all items are present and undamaged:

• 1 x Digital Tachometer PM6208A
• 2 x Measurement Idler Wheels (one 6-inch, one 0.1-meter)
• 2 x Measurement Touch Tips (one concave, one protruding)
• 1 x Lengthening Bar
• 1 x Pouch Bag

Figure 2: All components included in the product package.

3. Features

• MAX/MIN/AVG Functions for comprehensive data analysis.
• Multiple unit selections: m/min, m/sec, ft/min, ft/sec, in/min.
• Data Hold function to freeze current readings.
• Capacity to store up to 100 groups of data records.
• Automatic Power Off after 30 seconds of inactivity to conserve battery.
• Display Backlight for visibility in low-light conditions.
• Low Battery Indication to alert users for battery replacement.
• High-quality ABS casing for anti-crash protection.
• Equipped with a 16-bit high-speed integrated microprocessor and high-speed sensor for accurate measurements.

Figure 3: Overview of the tachometer's key functions.

4. Specifications

Figure 4: Device dimensions.

5. Device Overview and Panel Introduction

Familiarize yourself with the components and controls of your tachometer:

Figure 5: Front Panel and Key Functions.

1. Measurement Bearing
2. LCD (Liquid Crystal Display)
3. Power Switch Key
4. Mode Switch Key
5. Measurement Key
6. Maximum and Minimum Key
7. Data Storage Key
8. Data Storage Read Key
9. Backlight and HOLD Composite Key
10. Minus Key
11. Plus Key

Measurement Accessories:

Figure 6: Measurement Accessories.

1. 6 in. Idler Wheel
2. Concave Touch Tip
3. Protruding Touch Tip
4. Lengthening Bar
5. 0.1 m Idler Wheel

6. Setup

6.1 Battery Installation

1. Locate the battery compartment on the back of the tachometer.
2. Open the battery cover.
3. Insert four (4) 1.5V AAA batteries, ensuring correct polarity (+/-).
4. Close the battery cover securely.

Figure 7: Battery compartment location.

6.2 Attaching Measurement Accessories

Select the appropriate accessory based on the type of measurement:

• For RPM Measurement (Rotational Speed): Use the concave or protruding touch tips. Gently press the tip onto the center of the rotating shaft.
• For Linear Surface Speed Measurement: Use one of the idler wheels (6-inch or 0.1-meter). Attach the wheel to the measurement bearing. The lengthening bar can be used to extend the reach if needed.

To attach an accessory, align it with the measurement bearing (1) and push it firmly into place. Ensure it is securely seated before use.

7. Operation

7.1 Power On/Off

• Press the Power Switch Key (3) to turn the device ON.
• To turn OFF, press and hold the Power Switch Key (3) for a few seconds, or the device will automatically power off after 30 seconds of inactivity.

7.2 Selecting Measurement Units

After powering on, press the MODE Switch Key (4) repeatedly to cycle through the available measurement units: RPM, m/min, m/sec, ft/min, ft/sec, in/min. The selected unit will be displayed on the LCD (2).

7.3 Performing Measurements

1. Ensure the correct measurement accessory is attached and the desired unit is selected.
2. Press and hold the MEASURE Key (5). The device will start taking readings.
3. For RPM: Gently press the selected touch tip against the center of the rotating object.
4. For Linear Speed: Gently press the selected idler wheel against the surface of the moving object (e.g., conveyor belt, wheel circumference).
5. Read the measurement value on the LCD (2).
6. Release the MEASURE Key (5) to stop measuring.

7.4 Data Hold Function

During measurement, briefly press the Backlight and HOLD Composite Key (9) to freeze the current reading on the display. Press it again to release Data Hold and resume live measurement.

7.5 MAX/MIN/AVG Functions

While measuring, press the Maximum and Minimum Key (6) to cycle through Maximum (MAX), Minimum (MIN), and Average (AVG) readings recorded during the current measurement session.

7.6 Data Logging/Storage

• To store a reading: After taking a measurement, press the Data Storage Key (7). The device can store up to 100 groups of data.
• To read stored data: Press the Data Storage Read Key (8). Use the Plus Key (11) and Minus Key (10) to navigate through the stored records.

7.7 Backlight

Briefly press the Backlight and HOLD Composite Key (9) to toggle the display backlight ON or OFF.

8. Maintenance

8.1 Cleaning

• Wipe the device with a soft, dry cloth.
• Do not use abrasive cleaners or solvents.
• Keep the measurement bearing and accessories free from dust and debris.

8.2 Battery Replacement

When the low battery indicator appears on the LCD, replace all four (4) AAA batteries as described in Section 6.1. Remove batteries if the device will not be used for an extended period.

8.3 Storage

Store the tachometer and its accessories in the provided pouch bag in a cool, dry place, away from direct sunlight and extreme temperatures.

9. Troubleshooting

• Device does not power on: Check if the batteries are installed correctly and have sufficient charge. Replace batteries if necessary.
• Inaccurate readings: Ensure the measurement accessory is firmly attached and making proper contact with the rotating/moving surface. Verify that the correct measurement unit is selected.
• Display is dim or flickering: This may indicate low battery. Replace batteries.
• No reading displayed: Ensure the MEASURE key is pressed and held during measurement. Check for any obstructions to the measurement bearing.

10. User Tips

• Battery Type: Remember that the PM6208A requires 4x 1.5V AAA batteries, which are not included in the package. Always have spare batteries on hand for uninterrupted use.
• Unit Selection: This tachometer offers a wide range of units (RPM, m/min, m/sec, ft/min, ft/sec, in/min). Make sure to select the appropriate unit for your specific application using the MODE key to ensure accurate and relevant readings.
• Contact Measurement Only: The PM6208A is a contact digital tachometer. It does not perform optical (non-contact) measurements. Ensure direct physical contact with the rotating or moving surface for accurate results.
• Stable Contact: For best accuracy, maintain stable and consistent contact between the measurement accessory and the target surface during measurement.

11. Warranty and Support

For warranty information, technical support, or service inquiries, please contact the seller or manufacturer directly. Keep your purchase receipt as proof of purchase.