Xi'an Kacise Optronics Co.,Ltd.
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KPH500 Ph Sensor Ph Meter Sensor 4-20ma Ph Sensor Probe Meter Controller Tester
Production Introduction
The PH/ORP meter is a precision meter used to detect the pH/oxidation-reduction potential of liquids. It is designed with a microcomputer based on the principle of the primary battery and is simple to operate and easy to maintain. Not affected by color, turbidity, colloidal substances, oxidants and reducing agents, it is suitable for the determination of various media such as clean water, wastewater, industrial water, chemical reagents, etc., and is widely used in agriculture, environmental protection and industry.
The sensor uses a composite electrode, which can eliminate the influence of the inconstant "K" value,
A long-term, stable and accurate measurement of PH is realized. The internal structure of the sensor is shown on the right.
Principle of Measurement
PH meter is a potentiometric method to measure the PH of a solution, so the PH meter works in such a way that, in addition to measuring the PH of a solution, it can also measure the electromotive force of a battery.
The PH is the activity of hydrogen ions in a substance, and the PH is the negative of the logarithm of the concentration of hydrogen ions.The main measuring components of PH meter are glass electrode and reference electrode. Glass electrode is sensitive to PH and reference electrode has stable potential.If you put these two electrodes of the PH meter together in the same solution, you make a galvanic cell, and the potential of this galvanic cell is the algebraic sum of the potential of the glass electrode and the reference electrode.
The reference electrode potential of PH meter is stable, so in the case of temperature remains stable, the potential change of the galvanic cell composed of the solution and the electrode is only related to the potential of the glass electrode, and the potential of the glass electrode depends on the PH value of the solution to be measured, so through the measurement of the potential change, the PH value of the solution can be obtained.
Features
1. LCD display, Chinese menu operation, stable performance and strong reliability
2. High-performance operational amplifier, ORP positive and negative poles are symmetrical, small drift, high accuracy
3. Data is not lost after power off
4. Dual 4-20mA transmission output, relay high and low alarm control output, RS485 communication
Output
5. Simultaneous display of PH value, temperature value, output current value, high alarm value, low alarm value
PH/ORP size structure chart
Host size
Sensor size
PH/ORP technical parameters
| Class | Performance | PH parameter | OPR parameter |
| Host | Measuring range | 0-14PH | -2000mv-2000mv |
| Resolution | 0.01PH | 1mv | |
| Precision | 2% Calibration accuracy | ||
| Operating Temperature | Transmitter 0-65℃ | ||
| Material | PVC | ||
| Protection Level | I65/IP67(customized version) | ||
| Signal Output | 485 communication/4-20mA analog output/support HART protocol/NB.GPRS.LORA Communication (function option) | ||
| Supply Voltage | AC220V or DC24V (choose one of the two) | ||
| Power Consumption | <1W | ||
| Display | LCD Chinese display/TFT color LCD (customized version) | ||
| Installation Method | Wall mount | ||
| Sensor | Temperature Compensation | Automatic temperature compensation | |
| Protection Level | ip68 | ||
| Temperature | 0-60℃ | ||
| Sensor Material | PVC | ||
| Cable Length | Dedicated PH cable, standard 5 meters (extendable) | ||
| Operating Temperature | 0-60℃ | ||
| Storage Temperature | -10-60℃ | ||
| Installation Method | Bracket drop-in installation | ||
| Ordering Information Selection Table | ||
| KPH500 | PH/ORP analyzer | |
| Power supply | DC24V | |
| AC220V | ||
| Cable length | 5m | |
| 10m | ||
| 15m | ||
| 20m | ||
| Temperature compensation | Sensor without temperature compensation | |
| Sensor with temperature compensation | ||
| Signal output | Only 4-20mA | |
| Only 485 | ||
| Also with 4-20mA , 485 signal output | ||
| Special custom signal | ||
| KPH500-P-DC24V-5m-Sensor without temperature compensation-Only 485 | PH host, with DC24V adapter, cable between host and sensor,The cable length is 5 meters, the sensor is equipped without temperature compensation, and is only 485 communication. | |
| KPH500-R-AC220V-10m-Sensor with temperature compensation-Only 485 | Optional ORP host, with 220V adapter, line between host and sensor | |
Q&A
Why does the same sample give different readings on two pH meters?
PH measurement errors are due to pH electrode, pH meter host, and standard buffer.Due to two pH meter calibration conditions are not the same (e.g., correction made at different times), resulting in slightly different measurements, so use the same buffer at the same time.
Two pH meters were used for calibration, and then the pH value of the sample was determined simultaneously.
What is a composite electrode?
An electrode that combines a pH glass electrode with a reference electrode is called a pH composite electrode.The main advantage of the composite electrode is the combination of two
For one, easy to use.The structure of pH composite electrode mainly consists of electrode bulb, support rod, reference electrode, reference solution, shell and liquid
Junction, electrode cap, electrode wire, joint, etc.
Contact us
Website: www.kacise.com
Phone: +86-17719566736
Email: sales@kacise.com
Location: Tangyan South Road, High-tech Zone, Xi'an City, Shaanxi Province, China