Máy đo pH/mV/nhiệt độ trong rượu vang HANNA HI 2222
Model: HI 2222
Hãng sản xuất: HANNA - Ý
|Range||pH||-2.00 to 16.00 pH|
|mV||±699.9 mV; ±2000 mV|
|Temperature||-20.0 to 120.0°C|
|mV||0.1 (±699.9 mV); 1 (±2000 mV)|
|mV||±0.2 (±699.9 mV); ±1 (±2000 mV)|
|Temperature||± 0.2 °C excluding probe error|
|Calibration Check||status of electrode condition and response time, status of the buffer solution during calibration|
|pH Calibration||automatic, 1 or 2 point with 7 memorized buffer values (pH 1.68, 3.00, 6.86, 7.01, 9.18, 10.01, 12.45)|
|Temperature Compensation||manual or automatic, -20.0 to -120.0°C (-4 to 248°F)|
|pH Electrode||HI 1048P glass body, BNC + pin (included)|
|Temperature Probe||HI 7669/2W with 1 m (3.3') cable (included)|
|PC Connection||RS232 opto-isolated serial port|
|Data Logging||100 samples|
|Input Impedance||1012 Ohm|
|Power Supply||12 Vdc adapter (included)|
|Environment||0 to 50°C (32 to 122°F); RH max 95%|
|Dimensions||235 x 222 x 109 mm (9.2 x 8.7 x 4.3")|
|Weight||1.3 kg (2.9 lb.)|
- Designed specifically for wine analysis
- Dedicated 3.00 pH buffer for calibration in the wine pH range
- Clog-resistant electrode
- pH Calibration Check™ electrode diagnostics
- Electrode condition on display
- Calibration alarm timeout
- GLP features
- PC interface via USB
HI 2222 is the only pH meter on the market today that allows for automatic pH calibration at pH 3 and pH 7. With the dedicated 3.00 pH buffer for wine calibration in the wine pH range, any error due to calibration will be minimized. The HI 2222’s Calibration Check™ diagnostics along with the included HI 1048P clogging resistant pH electode further enhances measurement accuracy.
This wine analysis instrument also features logging of up to 100 samples, GLP (Good Laboratory Practice) capability, and a USB interface for the transfer of data to a PC.
In the process of wine making, most pH measurements are made in the must. A pH electrode gets dirty quickly when measuring the pH of must because sediments build up on both the pH measuring bulb and pH electrode junction. This becomes a big problem during the actual pH measurement if the electrode has not been properly cleaned. A dirty pH electrode can give results that are up to 0.5 pH inaccurate — even after a pH calibration has just been performed.
Conventional pH meters do not warn the user when the pH electrode is dirty. A common example of this occurs just after calibrating the instrument — the pH electrode is immersed into the pH 7 buffer and the reading is lower than expected (pH 6.8 or 6.9 instead of 7.0). HI 2222 uses HANNA ’s unique technology to detect when the electrode is dirty and gives a warning during calibration.
It is important to properly clean the pH electrode prior to use. A proper cleaning of the electrode must be done with appropriate cleaning solutions in order to remove all the deposits on the sensitive bulb and junction. HI 70635 (wine deposits removal) and HI 70636 (wine stain removal) are tailored made cleaning solutions that remove deposits from your pH electrode to guarantee accurate calibrations for stable, repeatable measurements and long electrode life. HANNA is the only manufacturer to offer tailor made cleaning solutions for winemaking.
HI 2222-01 (115V) and HI 2222-02 (230V) are supplied with HI 1048P pH electrode, HI 7662 temperature probe, HI 76404N electrode holder, HI 5003 pH 3.00 pH buffer solution, HI 70007 pH 7.01 buffer solution sachet, HI 700636 wine stain cleaning solution sachet, HI 700635 wine deposit cleaning solution sachet, HI 7082S electrolyte solution (30 mL), 5 mL graduated syringe, 12 VDC adapter and instructions.