Produktua amaituview
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.
1. irudia: Aurrealdea view of the Extech RH300 Digital Psychrometer, showing the display and control buttons.
Segurtasun Informazioa
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.
- Ez jarri gailua tenperatura altuen edo eguzki-argiaren eraginpean denbora luzez.
- Saihestu gailua erortzea edo kolpe gogorrak jasan.
- Ez saiatu gailua desmuntatzen edo aldatzen. Mantendu konponketa guztiak langile kualifikatuen esku.
- Ziurtatu bateria behar bezala instalatu eta botatzen dela tokiko araudien arabera.
- Keep the sensor cap closed when the device is not in use to protect the sensor.
Konfigurazioa
Bateriaren instalazioa
The Extech RH300 requires two AAA (1.5V) batteries for operation. Follow these steps to install the batteries:
- Bilatu bateriaren konpartimentuaren estalkia gailuaren atzealdean.
- Irristatu estalkia geziak adierazten duen norabidean.
- Sartu bi AAA pila, konpartimentuaren barruan markatutako polaritate zuzena (+ eta -) ziurtatuz.
- Itxi bateriaren konpartimentuaren estalkia ondo itxi arte klik egin arte.
2. Irudia: Atzealdea view of the Extech RH300, showing the battery compartment and two AAA batteries.
Hasierako piztea
After installing the batteries, press the ON/OFF button to power on the device. The display will illuminate and show the current humidity and temperature readings.
Funtzionamendu-argibideak
Neurketak hartzea
To ensure accurate readings, allow the device to stabilize in the measurement environment for a few minutes. Keep the sensor clear of obstructions.
- Hezetasun erlatiboa (%RH): Displayed on the top line of the LCD.
- Airearen tenperatura: Displayed on the middle line of the LCD.
- Dew Point (DP) / Wet Bulb (WB): Sakatu T/DP or T2/WB button to cycle between these readings on the bottom line of the LCD.
Unit Selection (°C/°F)
Sakatu ° C / ° F botoia Celsius eta Fahrenheit tenperatura unitateen artean aldatzeko.
Datuak gordetzeko funtzioa
Sakatu EUTSI button to freeze the current readings on the display. Press EUTSI again to release and resume live measurements.
MAX/MIN/Average Readings
The RH300 can record maximum, minimum, and average readings. To access these functions:
- Sakatu RESET MN/MX botoia behin sakatu erregistratutako balio maximoak bistaratzeko.
- Sakatu berriro erregistratutako gutxieneko balioak bistaratzeko.
- Press it a third time to display the average recorded values.
- To clear the recorded MAX/MIN/Average values, press and hold the RESET MN/MX button until the display resets.
Itzali automatikoa
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.
Mantentzea
Garbiketa
Garbitu gailua leun batekin, damp cloth. Do not use abrasive cleaners or solvents. Ensure the sensor area remains clean and free of dust or debris.
Biltegiratzea
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.
Kalibrazioa
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.
Arazoak konpontzea
| Arazoa | Kausa posiblea | Irtenbidea |
|---|---|---|
| Gailua ez da pizten. | Bateriak hilda edo gaizki instalatuta. | Ordeztu bateriak, polaritate zuzena ziurtatuz. |
| Irakurketa okerrak. | 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. |
Zehaztapenak
| Parametroa | Balioa |
|---|---|
| Eredua | RH300 |
| Hezetasun erlatiboa | 10 eta 90% RH |
| Airearen tenperatura-tartea | -4 eta 122 °F artean (-20 eta 50 °C artean) |
| Ihintz puntuaren barrutia | -90.4 eta 122 °F artean (-68.0 eta 49.9 °C artean) |
| Wet Bulb Range | -6.9 eta 122 °F artean (-21.6 eta 49.9 °C artean) |
| Elikatze Hornidura | 2 x AAA (1.5V) batteries |
| Neurriak | 3.1 x 1.9 x 9 hazbete (7.9 x 4.8 x 22.9 cm) |
| Pisua | 0.704 ontza (0.02 kg) |
| Jatorrizko Herrialdea | Txina |
Figure 3: Extech RH300 with approximate dimensions indicated.
Bermearen informazioa
The Extech RH300 Digital Psychrometer comes with a 1 urteko berme mugatua 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.
Bezeroarentzako Arreta
For technical assistance, troubleshooting, or service inquiries, please visit the official Extech webwebgunean edo jarri harremanetan bezeroarentzako arreta-taldearekin.
- Extech Webgunea: www.extech.com
- Lineako laguntza: Refer to the support section on the Extech website for FAQs, downloads, and contact forms.
