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| Instrument functions: |
| 1. | Backlit LCD wide screen, high definition digital display, operation reminder system and easy use |
| 2. | It contains ion measuring function of several kinds of ions（pH/pX/pF/pCl）. The data of ion concentration can be read directly. |
| 3. | Two-point calibration function. |
| 4. | Up to 400 sets of measuring data can be stored, deleted and viewed. |
| 5. | It has several functions such as low-power design, battery energy storage sign and power failure protection. |
| 6. | It can be connected with TP-16 serial printer. The current measuring data or stored data can be printed out. |
| 7. | The protection level of instrument case can reach IP65, and it is waterproof and dustproof and suitable for field work. |
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| Specification: |
| 1. | Measurement range: |
| | pX：(0.00～14.00)pX |
| | mV：(-1800～1800)mV |
| | Temperature: 0~60°C |
| 2. | Resolution: |
| | pX: 0.01pX |
| | mV: 1mV |
| | Temperature: 0.1 °C |
| 3. | Accuracy of the electric unit: |
| | pX: ±0.01pX±1 digital |
| | mV: ±0.1%FS |
| | Temp: ±0.3 °C ± 1 bit |
| 4. | Power supply: four alkaline batteries of model 5 |
