Key facts
- Brand
- Hanna Instruments
- Model
- HI 98120
- Category
- Other Electronics
- Documents
- 2
- Languages
- EN
- Last added
- 2012-07-10
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Hanna Instruments HI 9812-0/5 Portable pH/EC/TDS Meters Instruction Manual
The Hanna Instruments HI 9812-0 and HI 9812-5 are complete, versatile, and rain-proof portable combined meters designed for aquariums, fish-farming, and seawater applications. The HI 9812-0 measures pH, EC, and TDS, while the HI 9812-5 adds temperature measurement in the °C scale. Both models feature a membrane keyboard for easy selection of measurement ranges and automatic temperature compensation.
Read onlineHanna Instruments HI 98120 specifications
| pH Range | 0.0 to 14.0 |
|---|---|
| EC Range | 0 to 1990 µS/cm |
| pH Accuracy | ±0.1 (@20°C/68°F) |
| Battery Type | 1 x 9V alkaline |
| Battery Life | approx. 150 hours |
| Dimensions | 165 x 75 x 45 mm |
| Weight | 180 g |
Source: Hanna Instruments HI 9812-0/5 Portable pH/EC/TDS Meters Instruction Manual
All Hanna Instruments HI 98120 documents by type
Day-to-day operation, settings and troubleshooting. Start here if the product is already set up.
Questions answered in these manuals
What is the conversion factor between EC and TDS?
The conversion factor is fixed at 0.5, meaning 1 µS/cm is equal to 0.5 ppm of TDS.
From: Hanna Instruments HI 9812-0/5 Portable pH/EC/TDS Meters Instruction Manual
When should the instrument be recalibrated for pH?
The instrument should be recalibrated whenever the electrode is replaced, at least once a month, after testing aggressive chemicals, or where extreme accuracy is required.
From: Hanna Instruments HI 9812-0/5 Portable pH/EC/TDS Meters Instruction Manual
How do I replace the batteries?
Remove the four screws on the top of the meter, replace the four batteries paying attention to polarity, and replace the top ensuring the gasket is properly seated.
From: Hanna Instruments HI 98120 Waterproof ORP & Temperature Meter Instruction Manual
What happens if the battery level is too low?
The meter displays a low battery symbol, and if the voltage is low enough to cause erroneous readings, the Battery Error Prevention System (BEPS) automatically turns the meter off.
From: Hanna Instruments HI 98120 Waterproof ORP & Temperature Meter Instruction Manual