| Water Hardness | Measuring range | （0 ~ 10）mmol/L； （0 ~ 401）mg/L(Ca)； | （0 ~ 10）mmol/L； （0 ~ 401）mg/L(Ca)； |
| （0 ~ 1000）mg/L(CaCO3)； （0 ~ 100）ºfH(France Degree)； | （0 ~ 1000）mg/L(CaCO3)； （0 ~ 100）ºfH(France Degree)； | ||
| （0 ~ 561）mg/L(CaO)； （0 ~ 56）ºdH(German Degree)； | （0 ~ 561）mg/L(CaO)； （0 ~ 56）ºdH(German Degree)； | ||
| （0 ~ 20）mmol/L(Boiler)； （0 ~ 70）ºeH (England Degree)。 | （0 ~ 20）mmol/L(Boiler)； （0 ~ 70）ºeH (England Degree)。 | ||
| Resolution | 0.01 and 0.1 water hardness units | 0.01 and 0.1 water hardness units | |
| Accuracy | ±5% FS | ±5% FS | |
| Temp. compensation | （5 ~ 50）℃（（automatic）） | （5 ~ 50）℃（（automatic）） | |
| Calibration Solution | B1 Calibration Solution — 2.00×10-2 mmol/L | B1 Calibration Solution — 2.00×10-2 mmol/L | |
| B2 Calibration Solution — 2.00×10-1 mmol/L | B2 Calibration Solution — 2.00×10-1 mmol/L | ||
| B3 Calibration Solution — 2.00 mmol/L | B3 Calibration Solution — 2.00 mmol/L | ||
| （B3Calibration Solution also can be used for the soaking solution of electrode） | （B3Calibration Solution also can be used for the soaking solution of electrode） | ||
| Calibration Mode | (a)B1/B2 Calibration—using B1 and B2 Calibration Solution，suitable for < 2.00×10-2 mmol/L low concentration water quality，for example, boiler | (a)B1/B2 Calibration—using B1 and B2 Calibration Solution，suitable for < 2.00×10-2 mmol/L low concentration water quality，for example, boiler | |
| water. | water. | ||
| (b)Calibration—using B2 and B3 Calibration Solution，suitable forgeneral water quality. | (b)Calibration—using B2 and B3 Calibration Solution，suitable forgeneral water quality. | ||
| Temperature | Measuring range | 0 ~ 60℃ | 0 ~ 60℃ |
| Resolution | 0.1℃ | 0.1℃ | |
| Accuracy | ±0.5℃ | ±0.5℃ | |
| Other Technical Parameter | Data storage | 128 groups | 99 groups |
| Content Storage | serial number of measuring value, measuring value, units, temperature, ATC or MTC, date, time and calibration way. | serial number of measuring value, measuring value, units, temperature, ATC or MTC, date, time and calibration way. | |
| RS232 | Two AA cells（1.5V×2） | ||
| Power | DC9V | Meter：(65×120×31)mm/180g； Carry Case： (255×210×50)mm/790g | |
| Dimension and weight | (160×190×70)mm/750g | IISO9001:2000 and CE | |
| Quality & safecertificate | IISO9001:2000 and CE | ||
| working conditions | Ambient temperature | (5~35)℃ | (5~35)℃ |
| ambient humidity | ≤85%RH | ≤85%RH |
