എക്സ്ടെക് RHT20 ഹ്യുമിഡിറ്റി ആൻഡ് ടെമ്പറേച്ചർ ഡാറ്റലോഗർ യൂസർ മാനുവൽ

1. ആമുഖം

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.
• ഒതുക്കമുള്ള & പോർട്ടബിൾ ഡിസൈൻ: Lightweight and battery-powered for various monitoring locations.

2 സുരക്ഷാ വിവരങ്ങൾ

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.
• ഉപകരണം താഴെയിടുകയോ ഗുരുതരമായ ആഘാതത്തിന് വിധേയമാക്കുകയോ ചെയ്യുന്നത് ഒഴിവാക്കുക.
• ഉപകരണം തുറക്കാനോ പരിഷ്ക്കരിക്കാനോ ശ്രമിക്കരുത്. എല്ലാ സേവനങ്ങളും യോഗ്യതയുള്ള ഉദ്യോഗസ്ഥർക്ക് റഫർ ചെയ്യുക.
• പ്രാദേശിക നിയന്ത്രണങ്ങൾ അനുസരിച്ച് ബാറ്ററികൾ നീക്കം ചെയ്യുക.
• ശക്തമായ വൈദ്യുതകാന്തിക മണ്ഡലങ്ങളിൽ നിന്ന് ഉപകരണം അകറ്റി നിർത്തുക.

3. പാക്കേജ് ഉള്ളടക്കം

അൺപാക്ക് ചെയ്യുമ്പോൾ എല്ലാ ഇനങ്ങളും നിലവിലുണ്ടെന്നും നല്ല നിലയിലാണെന്നും ഉറപ്പാക്കുക:

• Extech RHT20 Humidity and Temperature Datalogger
• Lithium Metal Battery (installed)
• മൌണ്ടിംഗ് ബ്രാക്കറ്റ്
• USB കേബിൾ
• സോഫ്റ്റ്വെയർ സി.ഡി.
• ഉപയോക്തൃ മാനുവൽ (ഈ പ്രമാണം)

4. ഉൽപ്പന്നം കഴിഞ്ഞുview

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

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

പ്രധാന ഘടകങ്ങൾ ഉൾപ്പെടുന്നു:

• LCD ഡിസ്പ്ലേ: Shows current temperature, humidity, time, date, and alarm status.
• TEMP/%RH Button: Toggles between temperature and relative humidity display.
• പരമാവധി/മിനിറ്റ് ബട്ടൺ: Displays maximum and minimum recorded values.
• USB പോർട്ട്: Located at the bottom, used for connecting to a PC for data transfer and configuration.
• സെൻസർ: Integrated sensor for humidity and temperature measurements.

5. സജ്ജീകരണം

5.1 ബാറ്ററി ഇൻസ്റ്റാളേഷൻ

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. ബാറ്ററി കവർ മാറ്റി സ്ക്രൂകൾ ഉപയോഗിച്ച് ഉറപ്പിക്കുക.

5.2 സോഫ്റ്റ്‌വെയർ ഇൻസ്റ്റലേഷൻ

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 webസൈറ്റ്.
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.

ചിത്രം 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:
   • Sampലിംഗ് നിരക്ക്: Choose from 2s, 5s, 10s, 30s, 1m, 5m, 10m, 30m, 1hr, 2hr, 3hr, 6hr, 12hr, or 24hr.
   • അലാറം പരിധി: Set high and low limits for both humidity and temperature.
   • ലോഗിംഗ് മോഡ്: Options typically include stopping when memory is full or overwriting the oldest data.
   • അളവ് യൂണിറ്റ്: Select Celsius or Fahrenheit for temperature.
   • തീയതിയും സമയവും: 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 ഡാറ്റ ലോഗിംഗ് ആരംഭിക്കുന്നു

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.

ചിത്രം 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 Viewing MAX/MIN Readings

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 Stopping Data Logging

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. പരിപാലനം

7.1 വൃത്തിയാക്കൽ

സോഫ്റ്റ്, ഡി ഉപയോഗിച്ച് ഉപകരണം തുടയ്ക്കുകamp cloth. Do not use abrasive cleaners or solvents. Ensure the device is dry before use or storage.

7.2 ബാറ്ററി മാറ്റിസ്ഥാപിക്കൽ

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 സംഭരണം

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. പ്രശ്‌നപരിഹാരം

• ഉപകരണം ഓണാക്കുന്നില്ല: ബാറ്ററി ഇൻസ്റ്റാളേഷൻ പരിശോധിച്ച് ബാറ്ററിക്ക് മതിയായ ചാർജ് ഉണ്ടെന്ന് ഉറപ്പാക്കുക. ആവശ്യമെങ്കിൽ മാറ്റിസ്ഥാപിക്കുക.
• "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.
  • Try a different USB port on your PC.
  • സോഫ്റ്റ്‌വെയർ കൂടാതെ/അല്ലെങ്കിൽ നിങ്ങളുടെ കമ്പ്യൂട്ടർ പുനരാരംഭിക്കുക.
  • Check for any firewall or antivirus software blocking the datalogger software.
• കൃത്യമല്ലാത്ത വായനകൾ: 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 സ്പെസിഫിക്കേഷനുകൾ

10. വാറൻ്റിയും പിന്തുണയും

10.1 വാറൻ്റി വിവരങ്ങൾ

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 സാങ്കേതിക പിന്തുണ

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