This document is a product manual for Shanghai Shunyu Hengping Scientific Instruments Co., Ltd. It introduces their electronic balance product series, including analytical balances, precision balances, etc. These balances have high accuracy and strong environmental adaptability, and are suitable for pharmaceutical research institutions, schools, and enterprises.
This manual describes the FA/JA series electronic balances, which use an electromagnetic force sensor for high‑accuracy weighing. It outlines the balance’s features, such as linear correction, counting functions, multiple unit selections, and an RS‑232 data interface for computer connectivity. The document also lists typical applications in laboratories, research institutions, and industry.
The guide covers unpacking, installation on a stable, vibration‑free table, safety precautions, operating procedures, function settings, RS‑232 communication, and routine maintenance. Troubleshooting tips address common errors such as zero‑display issues and the impact of strong airflow on measurement stability. This manual is written in Chinese.
| Operating voltage | 24V DC |
|---|---|
| Operating temperature (CT‑7 level) | 20°C ±0.5°C |
| Temperature stability | ±1°C |
| Calibration weights | 100 g, 200 g, 500 g |
Press the “校准” (calibrate) key to start the automatic internal calibration.
Disable the auto‑zero function and reset the balance settings.
Place the balance on a level, sturdy, vibration‑free table, away from direct sunlight, with constant temperature, no airflow, and no corrosive gases.