Chlorine Residual

pH/mV/TDS/
Conductivity/
Dissolved Oxygen/
Temperature

N-770: pH/Redox/ORP/mV
N-270: Conductivity

Gemini
Portable Laboratory Instruments

The Gemini instruments are a range of simple to use, handheld meters. They use modern electronics & sophisticated measurement techniques for laboratory grade accuracy.
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• Single instruments or Laboratory Multi-Meter version.
• Robust, splash proof case with tilt stand.
• Automatic Temperature Compensation (ATC).
• Mains adapter or batteries with Batt Low indicator.

Combines the pH/mV, TDS, Conductivity and Temperature meters. It uses individual probes for each type of measurement and can be used with just a single probe or with all the probes together in the same solution.
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Uses a special linear epoxy probe for precision over the full measurement range. The Four ranges are slected automatically & the cell constant can be displayed for quick and simple calibration. ATC is fitted as standard at 2%/^oC.
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Uses a high accuracy pt-100 sensor. Probes may be interchanged without loss of accuracy. Readings may be displayed in ^oF or ^oC. The meter auto-ranges at 150 degrees for readings up to 600^oC or 1000^oF, using high temperature probes made to order.
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Displays values in % DO and ppm O₂. Seperate ATC is used for each function. The polargraphic probe is simple to calibarte and provides particularly stable and repeatable results.
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Uses probes with a BNC connector. A combined pH & ATC electrode is supplied as standard. Redox/ORP and Ion measurements with a resolution of 1mV can also be made.
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Copyright Robin Instruments Ltd. 2001-2002