Place of Origin:
China
ชื่อแบรนด์:
Kacise
Model Number:
KWS-750
Introduction
KWS-750 online pH sensor is used in environmental water quality monitoring, acid/alkali/salt solution, chemical reaction process, industrial production process, it can meet the requirements of online pH measurement for most industrial applications.
| Model | KWS-750 |
| Measuring Range | 0～14pH |
| Accuracy | ±0.1pH |
| Resolution | 0.01pH |
| Temperature Range | 0 ~ 65℃ |
| Work Pressure | ＜0.2MPa |
| Temperature Compensation | automatic temperature compensation |
| Output | RS-485, MODBUS protocol |
| Power Supply | 12～24VDC ±10% |
| Wetted Part Material | POM |
| Installation | Immersion mounting, 3/4 NPT thread |
| Cable Length | 5 m, customizable |
| Calibration Method | Two-point calibration |
| Power Consumption | ＜0.3W@12V |
| Ip Grade | IP68 |
Installation and Electrical Connection
Installation
Note: The sensor should not be installed upside down or horizontally when installed, at least at an angle of 15 degrees or more.
Wiring
a) Red line - power cord (12 ~ 24V)
b) Black line - ground (GND)
c) Blue line - 485A
d) White line - 485B
e) Bare wire - shielded wire
After wiring is completed, it should be carefully checked to avoid incorrect connections before powering up.
Cable specification: Considering that the cable is immersed in water (including sea water) for a long time or exposed to the air, the cable has certain corrosion resistance. The outer diameter of the cable is Φ6 mm and all interfaces are waterproof.
Maintenance
Use and maintenance
When measuring the pH sensor, it should be cleaned in distilled water (or deionized water), and the filter paper should be used to absorb moisture to prevent impurities from being introduced into the liquid to be tested. 1/3 of the sensor should be inserted into the solution to be tested.
The sensor should be washed when not in use, inserted into a protective sleeve with a 3.5 mol/L potassium chloride solution, or the sensor inserted into a container with a 3.5 mol/L
potassium chloride solution.
Check if the terminal is dry. If it is stained, wipe it with absolute alcohol and dry it. Avoid long-term immersion in distilled water or protein solution and prevent contact with silicone grease. With a longer sensor, its glass film may become translucent or with deposits, which can be washed with dilute hydrochloric acid and rinsed with water. The sensor is used for a long time. When a measurement error occurs, it must be calibrated with the meter for calibration.
When the calibration and measurement cannot be performed while the sensor is being maintained and maintained in the above manner, the sensor has failed. Please replace the sensor.
Standard Buffer Ph Reference Table
| Temp(°C ) | 4.00 | 4.01 | 6.86 | 7.00 | 9.18 | 10.01 |
| 0 | 4.00 | 4.00 | 6.98 | 7.12 | 9.46 | 10.32 |
| 5 | 4.00 | 4.00 | 6.95 | 7.09 | 9.39 | 10.25 |
| 10 | 4.00 | 4.00 | 6.92 | 7.06 | 9.33 | 10.18 |
| 15 | 4.00 | 4.00 | 6.90 | 7.04 | 9.28 | 10.12 |
| 20 | 4.00 | 4.00 | 6.88 | 7.02 | 9.23 | 10.06 |
| 25 | 4.00 | 4.01 | 6.86 | 7.00 | 9.18 | 10.01 |
| 30 | 4.01 | 4.02 | 6.85 | 6.99 | 9.14 | 9.97 |
| 35 | 4.02 | 4.02 | 6.84 | 6.98 | 9.17 | 9.93 |
| 40 | 4.03 | 4.04 | 6.84 | 6.97 | 9.07 | 9.89 |
| 45 | 4.04 | 4.0 5 | 6.83 | 6.97 | 9.04 | 9.86 |
| 50 | 4.06 | 4.06 | 6.83 | 6.97 | 9.02 | 9.83 |
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