# Calibration of the converters of the environment measurement instruments

pH meters measure the acidity of a liquid solution. To achieve this, pH meters take inputs for this quantity, as well as ORP (oxidation reduction potential), rH (relative humidity), and temperature.to complete the final callculations for the pH value. DC calibrators such as the 2553A are well positioned for verifyinf the temperature response on pH meters due to their ability to precisely tune output voltages with low drift and excellent stability.

### 相关产品和解决方案

#### 特点和优势

5.5位　±120000计数输出分辨率

• 高基本精度
• 高稳定性和低噪声
• 高分辨率

#### 标准源

2558A，2553A，2560A等标准电压电流源