This document introduces a product from Hanna Instruments, the HI 711 meter, which is used for measuring total chlorine. The document includes technical specifications, functional description, and error and warning information of the product.
The Hanna Instruments HI 711 is a portable Total Chlorine meter that utilizes the adaptation of the USEPA method 330.5. The device measures total chlorine concentration in ppm by detecting a pink tint caused by the reaction between chlorine and DPD reagent. It features a liquid crystal display, a light source (LED @ 525 nm), and a silicon photocell detector.
| Range | 0.00-3.50 ppm |
|---|---|
| Resolution | 0.01 ppm |
| Accuracy | ±0.08 ppm = ±2% of reading @ 25°C |
| Light Source | Light Emitting Diode @ 525 nm |
| Light Detector | Silicon Photocell |
| Method | Adaptation of USEPA method 330.5 |
| Operating Temperature | 0 to 50°C (32 to 122°F) |
| Humidity | max 95% RH non-condensing |
| Dimensions | 81.5 x 61 x 37.5 mm |
| Weight | 64 g |
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.
There is too much light to perform the measurement.