Produk Selesaiview
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.
Gambar 1: Depan view of the Extech RH300 Digital Psychrometer, showing the display and control buttons.
Informasi Keselamatan
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.
- Jangan biarkan perangkat terkena suhu ekstrem atau sinar matahari langsung dalam waktu lama.
- Hindari menjatuhkan perangkat atau membenturkannya dengan kuat.
- Jangan mencoba membongkar atau memodifikasi perangkat. Serahkan semua servis kepada teknisi yang berkualifikasi.
- Pastikan pemasangan dan pembuangan baterai dilakukan dengan benar sesuai peraturan setempat.
- Keep the sensor cap closed when the device is not in use to protect the sensor.
Pengaturan
Instalasi Baterai
The Extech RH300 requires two AAA (1.5V) batteries for operation. Follow these steps to install the batteries:
- Temukan penutup ruang baterai di bagian belakang perangkat.
- Geser penutup terbuka ke arah yang ditunjukkan oleh panah.
- Insert two AAA batteries, ensuring correct polarity (+ and -) as marked inside the compartment.
- Tutup penutup ruang baterai dengan rapat hingga terkunci pada tempatnya.
Gambar 2: Belakang view of the Extech RH300, showing the battery compartment and two AAA batteries.
Daya Awal Hidup
Setelah memasang baterai, tekan tombol AKTIF/NONAKTIF button to power on the device. The display will illuminate and show the current humidity and temperature readings.
Petunjuk Pengoperasian
Melakukan Pengukuran
To ensure accurate readings, allow the device to stabilize in the measurement environment for a few minutes. Keep the sensor clear of obstructions.
- Kelembapan Relatif (%RH): Displayed on the top line of the LCD.
- Suhu udara: Displayed on the middle line of the LCD.
- Dew Point (DP) / Wet Bulb (WB): Tekan tombol T/DP or T2/WB button to cycle between these readings on the bottom line of the LCD.
Unit Selection (°C/°F)
Tekan tombol ° C / ° F Tombol untuk beralih antara satuan suhu Celsius dan Fahrenheit.
Fungsi Penyimpanan Data
Tekan tombol MEMEGANG button to freeze the current readings on the display. Press MEMEGANG sekali lagi untuk merilis dan melanjutkan pengukuran langsung.
MAX/MIN/Average Readings
The RH300 can record maximum, minimum, and average readings. To access these functions:
- Tekan tombol 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 tekan tombol hingga tampilan kembali normal.
Mati Otomatis
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.
Pemeliharaan
Pembersihan
Usap perangkat dengan lembut, damp cloth. Do not use abrasive cleaners or solvents. Ensure the sensor area remains clean and free of dust or debris.
Penyimpanan
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.
Kalibrasi
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.
Penyelesaian Masalah
| Masalah | Kemungkinan Penyebab | Larutan |
|---|---|---|
| Perangkat tidak menyala. | Baterai mati atau tidak terpasang dengan benar. | Ganti baterai, pastikan polaritasnya benar. |
| Pembacaan yang tidak akurat. | 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. |
Spesifikasi
| Parameter | Nilai |
|---|---|
| Model | RH300 |
| Kisaran Kelembaban Relatif | 10 hingga 90% RH |
| Kisaran Suhu Udara | -4 hingga 122°F (-20 hingga 50°C) |
| Kisaran Titik Embun | -90.4 hingga 122°F (-68.0 hingga 49.9°C) |
| Wet Bulb Range | -6.9 hingga 122°F (-21.6 hingga 49.9°C) |
| Catu Daya | 2 x AAA (1.5V) batteries |
| Ukuran | 3.1 x 1.9 x 9 inci (7.9 x 4.8 x 22.9 cm) |
| Berat | 0.704 ons (0.02 kg) |
| Negara Asal | Cina |
Figure 3: Extech RH300 with approximate dimensions indicated.
Informasi Garansi
The Extech RH300 Digital Psychrometer comes with a Garansi Terbatas 1 Tahun 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.
Dukungan Pelanggan
For technical assistance, troubleshooting, or service inquiries, please visit the official Extech websitus atau hubungi tim dukungan pelanggan mereka.
- Teknologi Ekstra Weblokasi: www.extech.com
- Dukungan online: Refer to the support section on the Extech website for FAQs, downloads, and contact forms.
