This instruction manual covers the operation, calibration, measurement procedures, and maintenance of the Hanna Instruments HI 88713 ISO Turbidity Bench Meter.
The HI 88713 is a high-accuracy bench meter designed to meet and exceed the requirements of the ISO 7027 standard. It utilizes an advanced optical system with an IR LED, scattered light detector (90°), and transmitted light detector (180°) to minimize stray light and color interferences while compensating for variations in LED intensity.
The instrument features a user-friendly graphical LCD interface with comprehensive contextual help available in multiple languages. It supports various measurement modes including FNU, FAU, NTU ratio mode, and NTU non-ratio mode, allowing for flexible analysis of water turbidity.
| Method | ISO 7027 Method |
|---|---|
| Light Source | IR LED |
| Display | 40 x 70mm graphic LCD (64x128 pixels) with backlight |
| Serial Interface | USB |
| Power Supply | 12 Vdc power input |
| Dimensions | 230 x 200 x 145 mm (9 x 7.9 x 5.7") L x W x H |
| Weight | 2.5 Kg (88 oz.) |
The instrument meets and exceeds the requirements of the ISO 7027 standard.
The optical system is designed to have very low stray light, specifically less than 0.1 NTU (0.05 EBC).