R-Tek Multi Parameter Water Quality Meters
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A. Product Overview
The R-Tek RK-210 is a portable 4 in 1 water testing meter that combines four important water quality measurements in one device:
- pH: 0.00 to 14.00 pH
- EC: 0 to 1999 µS/cm and 0 to 19.99 mS/cm
- TDS: 0 to 1999 ppm and 0 to 19.9 ppt
- Temperature: 0°C to 50°C
The meter provides a pH resolution of 0.01 pH and temperature resolution of 0.1°C. Published accuracy is ±0.02 pH for pH measurement, ±2 percent full scale for TDS and EC, and ±0.5°C for temperature.
The RK-210 also includes automatic temperature compensation from 0°C to 50°C. It supports two point pH calibration using 4.01 and 6.86 solutions or single point calibration at 6.86. The instrument operates using three 1.5 V AG13 batteries and weighs approximately 98 grams.
B. Working Principle
The R-Tek RK-210 combines pH, conductivity, TDS and temperature measurement functions into a single handheld water quality meter.
When the sensing section of the meter is placed in the liquid sample, the instrument measures the relevant water parameters and displays their values digitally.
The pH function measures the acidity or alkalinity of the water.
The EC function measures electrical conductivity, which indicates how well the liquid conducts electrical current due to dissolved ionic substances.
The TDS function provides a total dissolved solids reading for evaluating the concentration of dissolved substances in water.
The temperature function measures the liquid temperature from 0°C to 50°C.
Its automatic temperature compensation feature helps compensate for changes in measurement caused by variations in sample temperature within its specified operating range.
C. Why It Is Used
The R-Tek RK-210 is useful when multiple basic water quality parameters need to be checked without using separate instruments for pH, conductivity, TDS and temperature.
It can help users:
- Check whether water is acidic, neutral or alkaline
- Measure dissolved solids in water
- Monitor electrical conductivity
- Measure water temperature
- Perform routine water quality checks
- Compare water quality before and after treatment
- Carry out quick field or laboratory measurements
- Reduce the need to carry separate pH, TDS, EC and temperature meters
Its compact 188 mm by 35 mm by 35 mm body and approximately 98 gram weight make it suitable for portable testing applications.
D. Suitable Buyers
The R-Tek RK-210 Multi Parameter Water Quality Meter can be useful for buyers who regularly need pH, TDS, conductivity and temperature measurements, including:
- Water treatment companies
- Water testing laboratories
- RO water system suppliers
- Water purifier service technicians
- Industrial maintenance departments
- Environmental testing professionals
- Aquarium operators
- Hydroponic growers
- Agriculture and irrigation users
- Educational laboratories
- Research laboratories
- Wastewater treatment facilities
- Process industries
- Quality control departments
- Field service engineers
- Water quality testing professionals
Frequently Asked Questions
1. What parameters can the R-Tek RK-210 measure?
The RK-210 can measure pH, TDS, electrical conductivity and temperature in a single instrument.
2. What is the pH range of the RK-210?
The pH measurement range is 0.00 to 14.00 pH with a resolution of 0.01 pH.
3. What is the TDS measurement range?
The meter measures TDS from 0 to 1999 ppm and 0 to 19.9 ppt.
4. What is the EC range of the R-Tek RK-210?
The EC measurement ranges are 0 to 1999 µS/cm and 0 to 19.99 mS/cm.
5. Can the RK-210 measure water temperature?
Yes. It measures temperature from 0°C to 50°C, equivalent to 32°F to 122°F.
6. Does the R-Tek RK-210 have automatic temperature compensation?
Yes. Automatic temperature compensation is specified from 0°C to 50°C.
7. What is the pH accuracy of the RK-210?
The specified pH accuracy is ±0.02 pH.
8. What is the accuracy for EC and TDS measurement?
The manufacturer specifies an accuracy of ±2 percent full scale for both EC and TDS measurement.
9. Can the RK-210 pH meter be calibrated?
Yes. It supports two point calibration at pH 4.01 and 6.86, or single point calibration at pH 6.86.
10. What battery does the R-Tek RK-210 use?
The instrument operates on three 1.5 V AG13 batteries.
11. Is the RK-210 suitable for portable water testing?
Yes. The meter measures approximately 188 mm by 35 mm by 35 mm and weighs about 98 grams, making it convenient for handheld testing.
12. Is the RK-210 a multi parameter water quality meter?
Yes. Because it measures pH, TDS, EC and temperature in one device, the RK-210 can be categorized as a 4 in 1 multi parameter water quality meter.