1. Introduction
The PEAKMETER PM6508 is a professional digital temperature and humidity meter designed for accurate measurement of ambient temperature, relative humidity, wet bulb temperature, and dew point temperature. This handheld device is suitable for various industrial applications, including environmental monitoring in farms and warehouses. It features a clear HD display, data logging capabilities, and a durable, shatter-resistant design.
Figure 1: PEAKMETER PM6508 Digital Temperature & Humidity Meter
2. Product Features
- Measures Ambient Temperature, Relative Humidity, Wet Bulb Temperature, and Dew Point Temperature.
- High precision measurements for reliable data.
- Large, clear HD digital display for easy reading.
- Data Hold function to freeze current readings.
- MAX/MIN function to record extreme values.
- Data Storage for up to 100 groups of readings.
- Switchable temperature units (°C/°F).
- Backlight for visibility in low-light conditions.
- Automatic Power-Off feature to conserve battery life.
- Durable, shatter-resistant cover and non-slip design for robust use.
- Equipped with a high-quality Switzerland Sensirion SHT11 sensor.
- Powered by a TI MSP430F135 Microprocessor.
- CE certified for safety and quality.
3. Product Specifications
Figure 2: Detailed Product Parameters
| Specifications | Range | Resolution | Accuracy |
|---|---|---|---|
| Ambient Temperature | -20°C ~ 0°C (-4°F ~ 32°F) 0°C ~ 45°C (32°F ~ 113°F) 45°C ~ 60°C (113°F ~ 140°F) | 0.1°C/°F 0.1°C/°F 0.1°C/°F | ±1.5°C ±0.5°C ±1.5°C |
| Relative Humidity | 0% ~ 20% 20% ~ 80% 80% ~ 100% | 0.1% 0.1% 0.1% | ±4.0% ±3.0% ±4.0% |
| Wet Bulb Temperature | -20°C ~ 0°C (-4°F ~ 32°F) 0°C ~ 45°C (32°F ~ 113°F) 45°C ~ 60°C (113°F ~ 140°F) | 0.1°C/°F 0.1°C/°F 0.1°C/°F | ±1.5°C ±0.5°C ±1.5°C |
| Dew Point Temperature | -50°C ~ 0°C (-58°F ~ 32°F) 0°C ~ 45°C (32°F ~ 113°F) 45°C ~ 60°C (113°F ~ 140°F) | 0.1°C/°F 0.1°C/°F 0.1°C/°F | ±1.5°C ±0.5°C ±1.5°C |
General Specifications:
- Data Hold: Yes
- Data Logging and Recall: 100 groups
- °C/°F Selection: Yes
- Backlight: Yes
- Max/Min: Yes
- Power Supply: 4 x 1.5V AAA Battery (not included)
- Weight: Approx. 190g
- Size: 184mm × 60mm × 29mm
- Safety Rating: CE CAT.III 300V RoHS
4. Components and Controls
Figure 3: PM6508 Digital Temperature & Humidity Meter Controls
- Temperature & Humidity Sensor: Located at the top, protected by a shatter-resistant cover.
- HD Display: Shows temperature, humidity, and other readings.
- Power On/Power Off Button: Used to turn the device on or off.
- MAX/MIN Button: Toggles between maximum, minimum, and current readings.
- Mode Switch (H Button): Activates Data Hold function.
- DP WB Button: Switches between Dew Point and Wet Bulb temperature display.
- MEM Button: Initiates data storage.
- READ Button: Recalls stored data.
- Backlight Button: Turns the display backlight on/off.
- °C/°F Button: Switches between Celsius and Fahrenheit units.
- Battery Jar: Compartment for batteries, located at the back.
- Non-Slip Design: Ergonomic design for secure handling.
Figure 4: High-precision Switzerland Sensirion SHT11 Sensor
5. Setup and Installation
5.1 Battery Installation
The PM6508 requires four (4) 1.5V AAA batteries (not included). To install the batteries:
- Locate the battery compartment on the back of the device.
- Open the battery cover.
- Insert four AAA batteries, ensuring correct polarity (+ and -).
- Close the battery cover securely.
Note: Batteries are not included due to air mail regulations.
Figure 5: Battery Compartment and Installation
6. Operating Instructions
6.1 Power On/Off
- Press the Power On/Power Off button (green circle) to turn the device on.
- Press and hold the Power On/Power Off button to turn the device off.
6.2 Measuring Temperature and Humidity
Upon powering on, the device will automatically display the current ambient temperature and relative humidity. Ensure the sensor at the top is exposed to the environment you wish to measure.
6.3 Switching Temperature Units (°C/°F)
- Press the °C/°F button to toggle between Celsius and Fahrenheit temperature units.
6.4 Data Hold Function
- Press the H button to freeze the current readings on the display. The "HOLD" indicator will appear.
- Press the H button again to release the data hold and resume live readings.
6.5 MAX/MIN Measurement
- Press the MAX/MIN button to cycle through maximum, minimum, and current readings.
- The display will show "MAX" or "MIN" to indicate the mode.
- Press the button repeatedly to view the maximum, minimum, and then return to current readings.
6.6 Dew Point and Wet Bulb Temperature
- Press the DP WB button to switch the display to show Dew Point Temperature or Wet Bulb Temperature.
- The corresponding indicator ("DEW POINT" or "WET BULB") will appear on the screen.
6.7 Data Storage and Retrieval (MEM/READ)
The device can store up to 100 groups of data.
- To store data: Press the MEM button. The current readings will be saved.
- To retrieve stored data: Press the READ button. Use the MIN/MAX buttons to navigate through the stored data groups.
6.8 Backlight
- Press the Backlight button (sun icon) to turn the display backlight on or off.
6.9 Auto Power-Off
The device features an automatic power-off function to save battery. If no button is pressed for a certain period, the meter will automatically shut down. This feature can usually be disabled or adjusted in advanced settings, though specific instructions are not provided here.
7. Maintenance
- Cleaning: Wipe the device with a soft, dry cloth. Do not use abrasive cleaners or solvents.
- Storage: When not in use for extended periods, remove the batteries to prevent leakage. Store the device in a cool, dry place, away from direct sunlight and extreme temperatures.
- Sensor Care: Keep the temperature and humidity sensor clean and free from dust or debris to ensure accurate readings. Avoid touching the sensor directly.
- Battery Replacement: Replace batteries promptly when the low battery indicator appears on the display.
8. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Device does not power on | Dead or incorrectly installed batteries. | Check battery polarity. Replace with new AAA batteries. |
| Inaccurate readings | Sensor obstructed or dirty; device not acclimatized to environment; low battery. | Clean the sensor. Allow device to stabilize in the measurement environment. Replace batteries. |
| Display is dim or flickering | Low battery. | Replace batteries. |
| Cannot store or recall data | Memory full; incorrect button sequence. | Ensure memory is not full (if applicable, manual does not specify how to clear). Refer to operating instructions for correct button usage. |
9. User Tips
Based on common user experiences with similar devices:
- For best accuracy, allow the meter to stabilize in the measurement environment for at least 15-30 minutes before taking readings.
- Avoid exposing the sensor directly to moisture or extreme temperature changes to prevent damage.
- When measuring in different locations, ensure the sensor is clean and free from residual moisture from previous measurements.
10. Warranty and Support
PEAKMETER provides a warranty for its products:
- Most items come with a 1-year warranty from the date of purchase.
- Accessories typically come with a 3-month warranty.
For defective or faulty products, please take photos or videos and contact PEAKMETER Official Store customer support for assistance. Please retain your proof of purchase for warranty claims.
