This document is the user manual of Hanna Instruments HI 701 Free Chlorine Water Quality Meter, which introduces the function, feature, usage and precautions of the instrument.
The Hanna Instruments HI 701 is a portable meter designed for measuring free chlorine concentration. It utilizes a light-emitting diode light source and a silicon photocell detector to determine the concentration based on the color change caused by the DPD reagent. The device features a liquid crystal display and a single button for operation.
| Light Detector | Silicon Photocell |
|---|
One fresh battery lasts for a minimum of 5000 measurements, depending on the light level.
When the battery capacity is under 10%, 'ba' appears on the LCD at start-up.
Turn the instrument off, remove the battery cover with a screwdriver, replace the battery, and reinsert the cover.
A blinking '0.00' indicates the sample absorbs less light than the zero reference, meaning the concentration is too low.