Water is a critical component throughout all stages of the petrochemical and refining processes. Moreover, the quality of the water has a significant impact on the process efficiency and operational effectiveness. AlpHa’s ion-selective electrodes (ISEs) enable real-time measurements, which are essential in refining & petrochemical applications. Examples of some key ions and their significance are as follows:
The combination of temperature variations and harsh chemical environments can be challenging during ISE measurements. These and other challenges can be mitigated with the optimal sensor design, in particular the reference system, specialized housing material, and various mechanical insertion assemblies. AlpHa’s ISE portfolio can target over twenty different ions which are designed for both lab and continuous process environments.
| 离子选择性电极 | 25°C 时的范围 | 技术类型 | 温度温度范围 | 保修 |
| 氨(NH3) | 0.01 - 17,000 ppm(以 NH 计3 | 气体感应 | 0 - 50°C | 12 个月 |
| 铵(NH4+) | 0.1 - 14,000 ppm(以 N 计 | PVC 膜 | 0 - 40°C | 6 个月 |
| 溴化物(Br-) | 0.2 - 79,900 ppm | 固体颗粒 | 0 - 80°C | 12 个月 |
| 镉(Cd2+) | 0.01 - 11,200 ppm | 固体颗粒 | 0 - 80°C | 12 个月 |
| 钙(Ca2+) | 0.5 - 40,100 ppm | PVC 膜 | 0 - 40°C | 6 个月 |
| 二氧化碳(CO2) | 百万分之 4.4 - 440 | 气体感应 | 0 - 50°C | 12 个月 |
| 氯化物(Cl-) | 百万分之 1.8 - 35,000 | 固体颗粒 | 0 - 80°C | 12 个月 |
| 铜(Cu2+) | 0.064 - 6,400 ppm | 固体颗粒 | 0 - 80°C | 12 个月 |
| 氰化物(CN-) | 0.2 - 260 ppm | 固体颗粒 | 0 - 80°C | 12 个月 |
| 氟化物(F-) | 0.02 - 19,000 ppm | 固态晶体 | 0 - 80°C | 12 个月 |
| 氟硼酸盐(BF4-) | 视情况而定 | PVC 膜 | 0 - 40°C | 6 个月 |
| 碘化物(I-) | 0.01 - 127,000 ppm | 固体颗粒 | 0 - 80°C | 12 个月 |
| 铅(Pb2+) | 0.2 - 20,700 ppm | 固体颗粒 | 0 - 80°C | 12 个月 |
| 锂(Li+) | 0.2 - 10,000 ppm | PVC 膜 | 0 - 40°C | 6 个月 |
| 镁(Mg2+) | 0.1 - 30,000 ppm | PVC 膜 | 0 - 40°C | 6 个月 |
| 硝酸盐(NO3-) | 0.1 - 14,000 ppm(以 N 计 | PVC 膜 | 0 - 40°C | 6 个月 |
| 氧化氮(NOx) | 视情况而定 | 气体感应 | 0 - 50°C | 12 个月 |
| 高氯酸盐(ClO4-) | 视情况而定 | PVC 膜 | 0 - 40°C | 6 个月 |
| 钾(K+) | 0.04 - 39,000 ppm | PVC 膜 | 0 - 40°C | 6 个月 |
| 银(Ag+) | 0.01 - 107,900 ppm | 固体颗粒 | 0 - 80°C | 12 个月 |
| 硫化物(S2-) | 0.01 - 32,100 ppm | 固体颗粒 | 0 - 80°C | 12 个月 |
| 钠(Na+) | 0.01 - 100,000 ppm | 传感玻璃 | 0 - 80°C | 12 个月 |
| 表面活性剂(X+ / X-) | 视情况而定 | PVC 膜 | 0 - 40°C | 6 个月 |
| 水硬度(Ca2+ / Mg2+) | 0.5 - 40,000 ppm | PVC 膜 | 0 - 40°C | 6 个月 |