Key facts
- Brand
- Hanna Instruments
- Model
- HI 93703
- Category
- Other Electronics
- Documents
- 2
- Languages
- EN
- Last added
- 2012-07-10
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Hanna Instruments HI 93703 Portable Microprocessor Turbidity Meter Instruction Manual
The HI 93703 is a portable, microprocessor-based instrument designed to determine the turbidity of water and wastewater according to ISO 7027 International Standard. It features an auto-ranging capability with two scales (0.00-50.00 FTU and 50-1000 FTU) and uses an infrared LED light source peaking at 890 nm to minimize interference from colored samples.
The manual details the operational guide, including how to insert batteries, turn on the device, and perform measurements using glass cuvettes. It also explains the calibration procedure, which supports one-point or three-point calibration using specific standard solutions (HI 93703-0, HI 93703-10, and HI 93703-50). Additionally, it covers troubleshooting sources of interference such as air bubbles, floating debris, and dirty glassware.
Hanna Instruments HI 93703 specifications
| Range | 0.00 to 50.00 FTU; 50 to 1000 FTU |
|---|---|
| Resolution | 0.01 and 1 FTU |
| Accuracy | ±0.5 FTU* or ±5% of reading (whichever is greater) |
| Light Source | Infrared LED peaking at 890 nm |
| Battery Type | 4 x 1.5V AA alkaline |
| Battery Life | Approx. 60 hours of use or 900 measurements |
| Dimensions | 220 x 82 x 66 mm (8.7 x 3.2 x 2.6") |
| Weight | 510 g (1.1 lb.) |
Source: Hanna Instruments HI 93703 Portable Microprocessor Turbidity Meter Instruction Manual
All Hanna Instruments HI 93703 documents by type
Day-to-day operation, settings and troubleshooting. Start here if the product is already set up.
Questions answered in these manuals
How long does the battery last and how many measurements can it support?
The four 1.5V batteries guarantee 60 hours of working life, which is equivalent to 900 measurements.
From: HANNA HI 93703-11 Portable Logging Turbidity Meter with RS232 Instruction Manual
What happens if the battery level drops below 10%?
A "LO BAT" indication appears on the display, and all four batteries need to be replaced.
From: HANNA HI 93703-11 Portable Logging Turbidity Meter with RS232 Instruction Manual
What is the turbidity unit used by this meter?
The instrument uses FTU (Formazine Turbidity Unit), which is equivalent to NTU.
From: Hanna Instruments HI 93703 Portable Microprocessor Turbidity Meter Instruction Manual
How often should the meter be calibrated?
A monthly calibration is recommended, though more frequent checks are suggested for greatest accuracy.
From: Hanna Instruments HI 93703 Portable Microprocessor Turbidity Meter Instruction Manual