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Portable Water Quality Meters

These portable water quality meters provide a lightweight, easy-to-use solution for on-the-go, real-time monitoring of crucial water parameters, primarily focusing on pH/ORP, DO, and Free CL measurements. They’ve been tailored for non-industrial settings, making them an ideal tool for monitoring personnel when out in the field:

  • The pH/ORP Meter (PNB-116) offers a measuring range of 0 to 14pH and -1999 to +1999mV, with an impressive resolution of 0.01pH, 1mV, and an accuracy of ±0.02pH and ±1mV. It’s characterized by high stability (≤0.01pH/24h) and storage capacity for 40 historical records.
  • The DO Meter (DNB-160) ranges from 0 to 20mg/L and 0 to 60°C, boasting a resolution of 0.1mg/L and 0.1°C, and an accuracy of ±1% of the full scale. It provides the convenience of both manual and automatic temperature compensation.
  • The Free CL Meter (CLN-170) measures from 0 to 20mg/L, with a resolution of 0.1mg/L and accuracy of ±1% of the full scale. It requires no membrane or reagents replacement, offering hassle-free operation.
  • Lastly, an optional Ozone Meter (also CLN-170) is available. It ranges from 0 to 20mg/L, with a resolution of 0.1mg/L and accuracy of ±1% of the full scale. Like the Free CL meter, it also eliminates the need for membrane or reagent replacement.


Application Features:


  • Lightweight and compact design for easy portability.
  • Offers real-time monitoring of key water parameters.
  • Suitable for non-industrial outdoor use.
  • Efficient storage of historical data.
  • High accuracy and resolution in readings.
  • Temperature compensation features for DO measurement.
  • Free CL and optional Ozone meters require no replacement of membranes or reagents.
About Us

Karma Instrumentation & Control is a specialist supplier of process control and automation equipment and SI systems, as well as a manufacturer and designer of process and electrical control panels.

Contact Us

• Address: Block A, Unit 3D, Wild Fig Business Park, 1494 Cranberry Street, Honeydew, 2170

• Email:

• Call us: 011 794 2859

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