Thermo Scientific Orion Star A121 pH Portable Meters combine simplicity with accuracy. A large LCD displays pH or mV readings along with temperature. Icons provide quick updates on battery life, electrode status and calibration information. Simple button layout and onscreen messages help with calibration and setup menu choices.
- Large, informative screen clearly shows the main information, including pH or mV reading, temperature in °C or °F, meter mode, calibration information and battery life
- Don’t miss a reading – AUTOREAD* locks in the stable reading on your screen and ready indicator alerts when readings are stable
- Up to 3 point pH calibration
- Automatic recognition of USA/NIST and DIN buffers
- Easily recall calibration slope data for procedure checksNon-volatile memory holds up to 50 data points
- Four AA batteries (included) provide over 2000 hours of operation or purchase the universal power adapter (sold separately) to run meter on AC power
- Perfectly portable, waterproof and protected to take anywhere with a IP67-rated housing
| Specifications | |
|---|---|
| Model | Orion Star A121 pH Portable Meter |
| pH Mode | |
| Range | -2.00 to 16.00 |
| Resolution | 0.1, 0.01 |
| Relative Accuracy | ±0.01 |
| Calibration Points | up to 3 |
| mV Mode | |
| Range | mV:±1600.0 mV ;RmV: ±1999.9 mV |
| Resolution | 0.1 |
| Relative Accuracy | ±0.2 mV or ±0.05% of reading whichever is greater |
| Calibration Points | 1 |
| Temperature Mode | |
| Range | -5 to 105 |
| Resolution | 0.1 |
| Relative Accuracy | ±0.1 |
| Display | Custom LCD; simultaneous display of measurement and temperature with helpful indicator icons |
| Inputs/Outputs | |
| Inputs | BNC, 8-pin mini-DIN |
| Sensor Type | pH or ORP electrode, temperature probe |
| Data Management | 50 points |
| Environmental Operating Conditions | |
| Ambient Operating Temperature | 5 to 45°C |
| Relative Humidity | 5 to 85% noncondensing |
| Power Supply | Four AA |
| Battery Life | 2000 hours |