Extech RH300

Extech RH300 Digital Psychrometer User Manual

મોડેલ: RH300

ઉત્પાદન ઓવરview

The Extech RH300 is a compact digital psychrometer designed for field applications, providing simultaneous measurements of relative humidity, air temperature, dew point, and wet bulb temperature. Its robust design includes a unique sensor cap for protection during storage.

This device is capable of calculating T1-T2 differential (air temperature minus external probe temperature) when an optional TP890 probe is used, and also T2 minus dew point. Advanced features include Data Hold, selectable Auto Power Off, and MAX/MIN/Average reading capabilities.

Extech RH300 Digital Psychrometer front view

આકૃતિ 1: ફ્રન્ટ view of the Extech RH300 Digital Psychrometer, showing the display and control buttons.

સલામતી માહિતી

Please read and understand all safety precautions before operating the Extech RH300. Failure to follow these instructions may result in injury or damage to the device.

  • ઉપકરણને લાંબા સમય સુધી અતિશય તાપમાન અથવા સીધા સૂર્યપ્રકાશમાં ન રાખો.
  • ઉપકરણને છોડવાનું ટાળો અથવા તેને મજબૂત અસરોને આધિન કરો.
  • ઉપકરણને ડિસએસેમ્બલ કરવાનો કે તેમાં ફેરફાર કરવાનો પ્રયાસ કરશો નહીં. બધી સર્વિસિંગ લાયક કર્મચારીઓને સોંપો.
  • Ensure proper battery installation and disposal according to local regulations.
  • Keep the sensor cap closed when the device is not in use to protect the sensor.

સેટઅપ

બેટરી ઇન્સ્ટોલેશન

The Extech RH300 requires two AAA (1.5V) batteries for operation. Follow these steps to install the batteries:

  1. ઉપકરણની પાછળ બેટરી કમ્પાર્ટમેન્ટ કવર શોધો.
  2. તીર દ્વારા દર્શાવેલ દિશામાં કવર ખુલ્લું કરો.
  3. Insert two AAA batteries, ensuring correct polarity (+ and -) as marked inside the compartment.
  4. બેટરી કમ્પાર્ટમેન્ટ કવરને સુરક્ષિત રીતે બંધ કરો જ્યાં સુધી તે જગ્યાએ ક્લિક ન થાય.
Extech RH300 Digital Psychrometer with batteries

આકૃતિ 2: પાછળ view of the Extech RH300, showing the battery compartment and two AAA batteries.

પ્રારંભિક પાવર ચાલુ

After installing the batteries, press the ચાલુ/બંધ button to power on the device. The display will illuminate and show the current humidity and temperature readings.

ઓપરેટિંગ સૂચનાઓ

માપન લેવું

To ensure accurate readings, allow the device to stabilize in the measurement environment for a few minutes. Keep the sensor clear of obstructions.

  • Relative Humidity (%RH): Displayed on the top line of the LCD.
  • હવાનું તાપમાન: Displayed on the middle line of the LCD.
  • Dew Point (DP) / Wet Bulb (WB): દબાવો T/DP or T2/WB button to cycle between these readings on the bottom line of the LCD.

Unit Selection (°C/°F)

દબાવો ° C/° F button to switch between Celsius and Fahrenheit temperature units.

ડેટા હોલ્ડ ફંક્શન

દબાવો પકડી રાખો button to freeze the current readings on the display. Press પકડી રાખો again to release and resume live measurements.

MAX/MIN/Average Readings

The RH300 can record maximum, minimum, and average readings. To access these functions:

  1. દબાવો RESET MN/MX button once to display the maximum recorded values.
  2. Press it again to display the minimum recorded values.
  3. Press it a third time to display the average recorded values.
  4. To clear the recorded MAX/MIN/Average values, press and hold the RESET MN/MX button until the display resets.

ઓટો પાવર બંધ

The device features a selectable Auto Power Off function to conserve battery life. Refer to the full manual for details on enabling or disabling this feature.

જાળવણી

સફાઈ

ઉપકરણને સોફ્ટ સાથે સાફ કરો, ડીamp cloth. Do not use abrasive cleaners or solvents. Ensure the sensor area remains clean and free of dust or debris.

સંગ્રહ

When not in use, store the RH300 in a cool, dry place. Always close the sensor cap to protect the humidity sensor from damage and contamination. Remove batteries if storing for extended periods to prevent leakage.

માપાંકન

The Extech RH300 is factory calibrated. For professional applications requiring periodic recalibration, contact Extech customer support or an authorized service center. Calibration kits (e.g., RH305) may be available for user calibration at specific humidity levels.

મુશ્કેલીનિવારણ

સમસ્યાસંભવિત કારણઉકેલ
ઉપકરણ પાવર ચાલુ કરતું નથી.મૃત અથવા ખોટી રીતે ઇન્સ્ટોલ કરેલી બેટરીઓ.યોગ્ય ધ્રુવીયતા સુનિશ્ચિત કરીને, બેટરી બદલો.
અચોક્કસ વાંચન.Sensor obstructed or contaminated; device not stabilized; extreme environmental conditions.Clean sensor; allow device to acclimate to environment; avoid direct breath on sensor.
Display shows "OL" or "---".Measurement range exceeded or sensor error.Move to an environment within the specified operating range. If issue persists, contact support.

વિશિષ્ટતાઓ

પરિમાણમૂલ્ય
મોડલRH300
સંબંધિત ભેજ શ્રેણી10 થી 90% આરએચ
હવાના તાપમાનની શ્રેણી-4 થી 122 ° ફે (-20 થી 50 ° સે)
ઝાકળ બિંદુ શ્રેણી-90.4 થી 122 ° ફે (-68.0 થી 49.9 ° સે)
Wet Bulb Range-6.9 થી 122 ° ફે (-21.6 થી 49.9 ° સે)
પાવર સપ્લાય2 x AAA (1.5V) batteries
પરિમાણો3.1 x 1.9 x 9 ઇંચ (7.9 x 4.8 x 22.9 સેમી)
વજન0.704 ઔંસ (0.02 કિગ્રા)
મૂળ દેશચીન
Extech RH300 Digital Psychrometer showing dimensions

Figure 3: Extech RH300 with approximate dimensions indicated.

વોરંટી માહિતી

The Extech RH300 Digital Psychrometer comes with a 1 વર્ષની મર્યાદિત વોરંટી from the date of purchase. This warranty covers defects in materials and workmanship under normal use. It does not cover damage resulting from misuse, abuse, accident, unauthorized alteration or repair, or acts of nature.

For warranty service, please retain your proof of purchase and contact Extech customer support.

ગ્રાહક આધાર

For technical assistance, troubleshooting, or service inquiries, please visit the official Extech webસાઇટ અથવા તેમની ગ્રાહક સપોર્ટ ટીમનો સંપર્ક કરો.

  • એક્સટેક Webસાઇટ: www.extech.com
  • Supportનલાઇન સપોર્ટ: Refer to the support section on the Extech website for FAQs, downloads, and contact forms.

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