A pHmeter consists of three essential parts: a pH measuring electrode, a reference electrode and a high input impedance meter. The reference electrode has a known, constant and stable potential.
The pH electrode can be considered as a battery, with a voltage that varies according to the pH of the measured solution. The pH-determining electrode is a hydrogen ion sensitive glass bulb, with a millivolt output that varies according to alterations in the relative concentration of hydrogen ions inside and outside the bulb. The output of the reference electrode does not change with the activity of hydrogen ions. The pH electrode has a very high internal resistance, which makes it difficult to measure voltage variation with pH. Therefore, the impedance of the pH meter input and the dispersion resistances are important factors.
• BNC connector is capable of connecting the different types of pH electrodes.
• 1 to 3 points calibration with auto-buffer recognition.
• Manual temperature compensation allows adjusting the temperature value.
• Auto-Read function senses and locks the measurement endpoint.
• Auto-Power Off effectively conserves battery life.
• Setup menu allows setting the pH buffer group, number of calibration points, temperature
unit, etc.
• Reset function automatically resumes all settings back to the factory defaults.
Accessories
High-accuracy pocket pH meter, 1 to 3 points calibration, setup menu contains 5 options. The tester is suitable...
High-accuracy pocket pH meter, 1 to 3 points calibration, setup menu contains 5 options. The tester is...
Classical benchtop pH meter, 1 to 3 points calibration, Automatic Temperature Compensation, setup menu...
Professional benchtop pH meter, 7 inch TFT display, stores up to 1000 data sets, setup menu contains 17 options...
• Auto-Read function senses and locks the measurement endpoint.
• Timed Interval Readings sends the measurement data to a PC or printer.
• Limit Alarm automatically alerts when reading exceeds the specified range.
• Calibration due alarm prompts user to calibrate the meter regularly.
• Calibration report shows the date, time, pH slope and offset.
• Password protection prevents the unauthorized calibration and settings.
• Expanded memory stores or recalls up to 1000 data sets.
• Reset function automatically resumes all settings back to the factory defaults.
| Model | YR01821 |
| pH | |
| Range | -2.000 to 20.000pH |
| Resolution | 0.001, 0.01pH, selectable |
| Accuracy | ±0.002pH |
| Calibration Points | 1 to 5 points |
| pH Buffer Options | USA, NIST, DIN, 5 custom buffers |
| ORP | |
| Range | ±2000.0mV |
| Resolution | 0.1mV |
| Accuracy | ±0.2mV |
| Calibration Points | 1 point |
| Measurement Modes | Relative or absolute mV |
| Temperature | |
| Range | 0 to 105°C/32 to 221°F |
| Resolution | 0.1°C/0.1°F |
| Accuracy | ±0.5°C/±0.9°F |
| Offset Calibration | 1 point |
| Calibration Range | Reading ±10°C |
| General Specifications | |
| Temperature Compensation | 0 to 100°C/32 to 212°F, manual or automatic |
| Stability Criteria | Standard or high-accuracy |
| Calibration Due Alarm | 1 to 31 days or off |
| Interval Readings | 10, 30, 60 seconds, 10, 30 minutes or off |
| Password Protection | 4 digits |
| Memory | Stores up to 1000 data sets |
| Output | USB communication interface |
| Connector | BNC, 3.5mm jack socket |
| Display | 7” TFT LCD |
| Power | DC12V, using AC adapter, 220V/50Hz |
| Dimensions | 240(L)×220(W)×80(H)mm |
| Weight | 1.7kg |
| Order Code | Accessories |
|
YR01821
|
E201-BNC pH electrode |
| TP-10K temperature probe | |
| pH4.01/7.00/10.01 buffer sachets | |
| DC12V power adapter | |
|
YR01821-1
|
P11 glass pH electrode |
| TP-10K temperature probe | |
| pH4.01/7.00/10.01 buffer sachets | |
| DC12V power adapter |
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To know the price of pH meters we invite you to send us an email with your request through the contact form...
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