| (PP-15-P11 PH计、PP-20-P11 PH计/电导计、PP-25-P11 PH计/离子计、PP-50-P11 PH计/电导计/离子计)
             ● pH测量精度高达±0.001,mV测量精度达±0.1mV   | 
        
| 型号 | PP-15-P11 | PP-20-P11 | PP-25-P11 | PP-50-P11 | 
| PH测量范围 | -2.000~+20.000 | -2.000~+20.000 | -2.000~+20.000 | -2.000~+20.000 | 
| PH分辨率 | +0.001 | +0.001 | +0.001 | +0.001 | 
| 
             PH精度  | 
            +0.002 | +0.002 | +0.002 | +0.002 | 
| MV测量范围(mv) | +1.0 | +1.0 | +1.0 | +1.0 | 
| MV分辨率(mv) | +0.1 | +0.1 | +0.1 | +0.1 | 
| MV精度(mv) | +0.1 | +0.1 | +0.1 | +0.1 | 
| 校准点(max) | 5 | 5 | 5 | 5 | 
| 自动识别缓冲液 | 27 | 27 | 27 | 27 | 
| FET电极接头 | ○ | ○ | ○ | ○ | 
| 温度范围(℃) | -5.0~105.0 | -5.0~105.0 | -5.0~105.0 | -5.0~105.0 | 
| 分辩率(℃) | +0.1 | +0.1 | +0.1 | +0.1 | 
| 精度(℃) | +0.2 | +0.2 | +0.2 | +0.2 | 
| 离子选择测量 | ○ | ○ | ||
| 校准点(max) | 7 | 7 | ||
| 直接电位和增量方式(标准加/减,分析加/减) | ○ | ○ | ||
| 电导率测量 | ○ | ○ | ||
| 校准点(max) | 5 | 5 | ||
| 电导率、阻抗、盐度、TDS、NaCL盐度 | ○ | ○ | ||
| 温度显示 | ○ | ○ | ○ | ○ | 
| 人工输入温度 | ○ | ○ | ○ | ○ | 
| 自动温度补偿 | ○ | ○ | ○ | ○ | 
| 输入电极数量 | 2 | 3 | 3 | 4 | 
| 可选择测量结果参数 | ○ | ○ | ○ | ○ | 
| 同时显示几种测量结果 | ○ | ○ | ○ | ○ | 
| 日期/时间标记,记忆存储 | ○ | ○ | ○ | ○ | 
| 校准提示 | ○ | ○ | ○ | ○ | 
| 记录符合GLP | ○ | ○ | ○ | ○ | 
| 超大图形显示屏 | ○ | ○ | ○ | ○ | 
| RS-232双向接口 | ○ | ○ | ○ | ○ | 
| 接通电源,自动检查 | ○ | ○ |