Ürün Bittiview
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.
Şekil 1: Ön view of the Extech RH300 Digital Psychrometer, showing the display and control buttons.
Güvenlik Bilgileri
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.
- Cihazı uzun süre aşırı sıcaklıklara veya doğrudan güneş ışığına maruz bırakmayın.
- Cihazı düşürmekten veya güçlü darbelere maruz bırakmaktan kaçının.
- Cihazı sökmeye veya üzerinde değişiklik yapmaya çalışmayın. Tüm servis işlemlerini yetkili personele yaptırın.
- Yerel yönetmeliklere uygun olarak pilin doğru şekilde takılması ve atılması sağlanmalıdır.
- Keep the sensor cap closed when the device is not in use to protect the sensor.
Kurmak
Pil Kurulumu
The Extech RH300 requires two AAA (1.5V) batteries for operation. Follow these steps to install the batteries:
- Cihazın arkasındaki pil bölmesi kapağını bulun.
- Kapağı okla gösterilen yönde kaydırarak açın.
- Insert two AAA batteries, ensuring correct polarity (+ and -) as marked inside the compartment.
- Pil bölmesi kapağını yerine oturana kadar sıkıca kapatın.
Şekil 2: Arka view of the Extech RH300, showing the battery compartment and two AAA batteries.
İlk Güç Açık
Pilleri taktıktan sonra, aşağıdaki tuşa basın. AÇIK/KAPALI button to power on the device. The display will illuminate and show the current humidity and temperature readings.
Kullanım Talimatları
Ölçüm Alma
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.
- Hava Sıcaklığı: Displayed on the middle line of the LCD.
- Dew Point (DP) / Wet Bulb (WB): Basın T/DP or T2/WB button to cycle between these readings on the bottom line of the LCD.
Unit Selection (°C/°F)
Basın °C/°F Santigrat ve Fahrenheit sıcaklık birimleri arasında geçiş yapmak için kullanılan düğme.
Veri Bekletme İşlevi
Basın TUTMAK button to freeze the current readings on the display. Press TUTMAK again to release and resume live measurements.
MAX/MIN/Average Readings
The RH300 can record maximum, minimum, and average readings. To access these functions:
- Basın RESET MN/MX button once to display the maximum recorded values.
- Press it again to display the minimum recorded values.
- 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.
Otomatik Kapanma
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.
Bakım
Temizlik
Cihazı yumuşak bir bezle silin.amp cloth. Do not use abrasive cleaners or solvents. Ensure the sensor area remains clean and free of dust or debris.
Depolamak
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.
Kalibrasyon
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.
Sorun giderme
| Sorun | Olası Neden | Çözüm |
|---|---|---|
| Cihaz açılmıyor. | Piller bitmiş veya yanlış takılmış. | Pilleri doğru kutuplara yerleştirerek değiştirin. |
| Hatalı okumalar. | Sensor obstructed or contaminated; device not stabilized; extreme environmental conditions. | Clean sensor; allow device to acclimate to environment; avoid direct breath on sensor. |
| Ekranda "OL" veya "---" yazısı görünür. | Measurement range exceeded or sensor error. | Move to an environment within the specified operating range. If issue persists, contact support. |
Özellikler
| Parametre | Değer |
|---|---|
| Örnek | RH300 |
| Bağıl Nem Aralığı | %10 ila %90 RH |
| Hava Sıcaklık Aralığı | -4 ila 122°F (-20 ila 50°C) |
| Çiğ Noktası Aralığı | -90.4 ila 122°F (-68.0 ila 49.9°C) |
| Wet Bulb Range | -6.9 ila 122°F (-21.6 ila 49.9°C) |
| Güç Kaynağı | 2 x AAA (1.5V) batteries |
| Boyutlar | 3.1 x 1.9 x 9 inç (7.9 x 4.8 x 22.9 cm) |
| Ağırlık | 0.704 ons (0.02 kg) |
| Menşei ülke | Çin |
Figure 3: Extech RH300 with approximate dimensions indicated.
Garanti Bilgileri
The Extech RH300 Digital Psychrometer comes with a 1 Yıllık Sınırlı Garanti 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.
Müşteri Desteği
For technical assistance, troubleshooting, or service inquiries, please visit the official Extech websitesine gidin veya müşteri destek ekibiyle iletişime geçin.
- Ekstech Webalan: www.extech.com
- Çevrimiçi destek: Refer to the support section on the Extech website for FAQs, downloads, and contact forms.
