Manwal tal-Utent tad-Datalogger tal-Umdità u t-Temperatura Extech RHT20

1. Introduzzjoni

The Extech RHT20 is a humidity and temperature datalogger designed for monitoring environmental conditions. This device records up to 16,000 humidity and 16,000 temperature readings, providing comprehensive data for various applications. It features a user-programmable sample rate, USB interface for data transfer, and an LCD display for real-time readings and alarm status. This manual provides essential information for the proper setup, operation, and maintenance of your RHT20 datalogger.

• Accurate Humidity & Temperature Monitoring: Measures relative humidity from 0-100% and temperature from -40 to 158 °F (-40 to 70 °C).
• Large 16,000-Point Memory Capacity: Stores 8,000 humidity and 8,000 temperature readings with time and date stamp.
• USB Data Transfer to PC: Connects to a computer for data download, analysis, and reporting using included software.
• Calculates Dew Point Automatically: Provides precise dew point values.
• Disinn kompatt u portabbli: Lightweight and battery-powered for various monitoring locations.

2. Informazzjoni dwar is-Sigurtà

Please read and understand all safety instructions before operating the device. Failure to comply with these instructions may result in damage to the device or personal injury.

• Do not expose the device to extreme temperatures, direct sunlight, or high humidity for extended periods.
• Evita li twaqqa' l-apparat jew li tissottomettih għal impatt qawwi.
• Tippruvax tiftaħ jew timmodifika l-apparat. Irreferi kull servizz lil persunal kwalifikat.
• Armi l-batteriji skont ir-regolamenti lokali.
• Żomm l-apparat 'il bogħod minn kampi elettromanjetiċi qawwija.

3. Kontenut tal-Pakkett

Ivverifika li l-oġġetti kollha huma preżenti u f'kundizzjoni tajba meta tiftaħ il-pakkett:

• Extech RHT20 Humidity and Temperature Datalogger
• Lithium Metal Battery (installed)
• Bracket tal-Immuntar
• Cable USB
• Software CD
• Manwal għall-Utent (dan id-dokument)

4. Prodott Aktarview

The Extech RHT20 datalogger features a compact design with an integrated LCD display and control buttons.

Figura 4.1: Quddiem view of the Extech RHT20 Humidity and Temperature Datalogger, showing the LCD display, 'TEMP/%RH' button, and 'MAX/MIN' button.

Il-komponenti ewlenin jinkludu:

• Display LCD: Shows current temperature, humidity, time, date, and alarm status.
• TEMP/%RH Button: Toggles between temperature and relative humidity display.
• Buttuna MAX/MIN: Displays maximum and minimum recorded values.
• Port USB: Located at the bottom, used for connecting to a PC for data transfer and configuration.
• Sensor: Integrated sensor for humidity and temperature measurements.

5. Setup

5.1 Installazzjoni tal-batterija

The RHT20 comes with a pre-installed Lithium Metal battery. If replacement is necessary:

1. Unscrew the two small screws on the battery compartment cover located on the back of the device.
2. Remove the cover and the old battery.
3. Insert a new 3.6V Lithium Metal battery (e.g., 1/2 AA size) ensuring correct polarity.
4. Erġa’ poġġi l-għatu tal-batterija u waħħalha bil-viti.

5.2 Installazzjoni tas-Softwer

The RHT20 requires proprietary software for full configuration and data analysis. The software is provided on a mini-CD. It is recommended to check the Extech website for the latest version and drivers.

1. Insert the software CD into your computer's CD/DVD drive. If your computer does not have a CD drive, download the software from the official Extech support websit.
2. Follow the on-screen instructions to install the software and USB drivers.
3. Ensure the installation completes successfully before proceeding.

5.3 Connecting to PC and Initial Configuration

Connect the datalogger to your PC using the supplied USB cable to set up logging parameters and synchronize time.

Figura 5.1: The Extech RHT20 Datalogger connected to a computer via its USB port for data transfer and configuration.

1. Connect the mini-USB end of the cable to the datalogger and the standard USB end to an available port on your PC.
2. Launch the Extech Datalogger software.
3. Within the software, select the "Connect" option. The software should detect the device.
4. Navigate to the "Logger Set" or "Parameter Settings" section. Here you can configure:
   • SampRata tal-linarda: Choose from 2s, 5s, 10s, 30s, 1m, 5m, 10m, 30m, 1hr, 2hr, 3hr, 6hr, 12hr, or 24hr.
   • Limiti ta' Allarm: Set high and low limits for both humidity and temperature.
   • Modalità tal-Logging: Options typically include stopping when memory is full or overwriting the oldest data.
   • Unità ta' Kejl: Select Celsius or Fahrenheit for temperature.
   • Data u Ħin: Synchronize the datalogger's clock with your PC.
5. Apply the settings to the datalogger. The device is now ready for data logging.

6. Operating the Datalogger

6.1 Tibda r-Reġistrazzjoni tad-Data

Once configured via the software, disconnect the datalogger from the PC. Press and hold the "TEMP/%RH" button for approximately 3 seconds until the "REC" indicator appears on the LCD, signifying that logging has started. Place the datalogger in the desired monitoring location.

Figura 6.1: The Extech RHT20 Datalogger mounted on a shelf, actively monitoring environmental conditions in a storage facility.

6.2 Viewing Current Readings

While logging, the LCD will continuously display the current temperature and humidity. Press the "TEMP/%RH" button to toggle between displaying temperature and relative humidity.

6.3 ViewQari MAX/MIN

Press the "MAX/MIN" button to cycle through the maximum and minimum recorded temperature and humidity values since logging began. Pressing it again will return to current readings.

6.4 Twaqqif tar-Reġistrazzjoni tad-Data

To stop logging, press and hold the "TEMP/%RH" button for approximately 3 seconds until the "REC" indicator disappears from the LCD.

6.5 Data Download and Analysis

After logging is complete, connect the datalogger to your PC via USB. Open the Extech Datalogger software and select the "Download Data" option. The software will retrieve the recorded data, which can then be viewed in graphical or tabular format, exported to a spreadsheet (e.g., .xls or .txt), or saved in a proprietary format for later analysis.

7. Manutenzjoni

7.1 Tindif

Imsaħ l-apparat b'artab, damp cloth. Do not use abrasive cleaners or solvents. Ensure the device is dry before use or storage.

7.2 Sostituzzjoni tal-batterija

Refer to Section 5.1 for instructions on replacing the Lithium Metal battery. Replace the battery when the low battery indicator appears on the LCD.

7.3 Ħażna

When not in use for extended periods, store the datalogger in a cool, dry place, away from direct sunlight and extreme temperatures. It is advisable to remove the battery if storing for several months to prevent leakage.

8 Issolvi l-problemi

• Apparat mhux qed jixgħel: Iċċekkja l-installazzjoni tal-batterija u kun żgur li l-batterija għandha biżżejjed ċarġ. Ibdel jekk meħtieġ.
• "REC" indicator not appearing: Ensure the "TEMP/%RH" button is pressed and held for the required duration (approx. 3 seconds). Verify that the device is not connected to a PC, as logging typically starts after disconnection.
• Software not detecting device:
  • Ensure the USB cable is securely connected to both the datalogger and the PC.
  • Verify that the USB drivers for the RHT20 are correctly installed. Reinstall if necessary.
  • Ipprova port USB differenti fuq il-PC tiegħek.
  • Erġa' ibda s-softwer u/jew il-kompjuter tiegħek.
  • Check for any firewall or antivirus software blocking the datalogger software.
• Qari mhux preċiż: Ensure the sensor is clean and unobstructed. Allow the device to acclimate to the environment for a few minutes before taking critical measurements.
• Data logging stops unexpectedly: Check the battery level. If the logging mode was set to stop when memory is full, download data and clear the logger to resume.

9. Speċifikazzjonijiet

10. Garanzija u Appoġġ

10.1 Informazzjoni dwar Garanzija

Extech instruments are warranted against defects in parts and workmanship for a specified period from the date of shipment (typically one year). For detailed warranty terms and conditions, please refer to the warranty card included with your product or visit the official Extech website. This warranty does not cover defects resulting from user modification, misuse, improper handling, battery leakage, or unauthorized repair.

10.2 Appoġġ Tekniku

For technical assistance, troubleshooting, or service inquiries, please contact Extech customer support. You can find contact information and additional resources on the official Extech websit: www.extech.com/support. Please have your product model number (RHT20) and serial number ready when contacting support.