Orion Star A325 pH / Conductivity Portable Meter
- High Range pH Applications pH measurement range from -2.000 to 20.000
- High Range Conductivity Applications Conductivity measurement range from 0.001 mS to 3000 mS
- Non-Volatile Memory Memory capacity to store up up 5000 time and date stamped data points
- Warranty A325 is covered by a 3 year replacement meter warranty
Overview
With the Star A325 Portable Water Quality Meter, information is easy to read of the large backlit graphic LCD display which shows individual pH/mV/RmV or conductivity/TDS/salinity/resistivity results with temperature or all results at once. Laboratory accuracy can be sought with the advanced salinity and averaging options. Conductivity readings with advanced accuracy are given by selecting a reading reference temperature of 5, 10, 15, 20 or 25°C with the choice of linear, non-linear, nLFu or EP curve.
Up to 5 point pH calibration with automatic recognition for USA/NIST and DIN buffers, selectable cell constant enables use with 2 or 4 cell conductivity cells. Practical salinity or natural sea water curves specifically for salinity readings can be set and Linear or ISO/EN 27888 curves for TDS. pH calibration errors can be fixed without the need for a complete recalibration using calibration editing. Further on screen features include electrode status, time, date, sample ID, user ID and calibration points.
The Orion Star A325 pH/Conductivity Portable Water Quality Meter has the capacity to hold up to 5000 data points time and date stamped. Additional on screen features include electrode status, time, date, sample ID, user ID and calibration points. Multilanguage supports in English, Spanish, French, Italian, German and Chinese, clear language prompts and soft key updates make this meter easy to use.
Updating and transferring of information is simple using the USB, RS23 ports and complimentary data analysis software. The AUTO-READ feature means stable readings are locked on the screen and the ready indicator advises when readings are stable. Timed readings gather information at specific time intervals for added accuracy.
The water quality meter is waterproof, protected with IP67-rated housing and can be powered either with batteries or a universal power adapter sold separately and covered by a 3 year replacement warranty.
Manufactured by: Thermo Scientific
Model: Orion Star A325 pH / Conductivity Portable Meter
Services offered for this product
- Sales
- Rental
- Installation
- Calibration
- Maintenance
Applications
High range applications
Seawater applications
Saline ingress
Estuary monitoring
Specification
| pH | |
| Range | -2.000 to 20.000 |
| Resolution | 0.1, 0.01, 0.001 |
| Relative Accuracy | ±0.002 |
| Calibration Points | Up to 5 |
| Calibration Editing | Yes |
| mV/RmV | |
| Range | ±2000.0 mV |
| Resolution | 0.1 |
| Relative Accuracy | ±0.2 mV or ±0.05 % of reading whichever is greater |
| EH ORP Mode | Yes |
| Conductivity | |
| Range | 0.001 µS to 3000 mS |
| Resolution | 0.001 µS minimum; 4 significant figures minimum |
| Relative Accuracy | 0.5 % reading ±1 digit |
| Reference Temperature | 5, 10, 15, 20, 25 °C (default) |
| Temperature Compensation |
Linear (0 to 10.0 %/°C), nLn, nLFu, EP |
| Compatible Cell Constants |
0.001 to 199.9 |
| Calibration Points | Up to 5 points |
| Calibration Editing | Yes |
| Resistivity | |
| Range | 2 ohm to 100 meg-ohm |
| Resolution | 2 ohms-cm |
| Relative Accuracy | 0.5 % reading ±1 digit |
| Salinity | |
| Type | Practical salinity or natural sea water |
| Range | 0.01 to 80.0 ppt NaCl equivalent; 0.01 to 42 ppt practical salinity |
| Resolution | 0.01 |
| Relative Accuracy | ±0.1 |
| TDS | |
| Range | 0 to 200 ppt |
| Resolution | 4 significant digits |
| Relative Accuracy | ±0.5 % reading ±1 digit |
| TDS Factor Range | Linear 0.01 to 10.00, default 0.49 |
| Temperature | |
| Range | -5 to 105 °C, 23 to 221 °F |
| Resolution | 0.1 |
| Relative Accuracy | ±0.1 |
| Offset Calibration | 1 point |
| Datalogging | |
| Number of Points | 2000 with time and date stamp |
| Log Function | Manual, ready (include AUTO-READ™), timed |
| Log Edit | Delete individual points, group of points or all |
| Inputs | |
| pH Electrode | BNC, reference pin |
| Conductivity with Temperature Probe or ATC Probe |
8-pin mini-DIN |
| Output | RS232, USB |
| Power | |
| AC Adapter | Optional universal, 100-240 VAC |
| Battery Power | Included 4 AAs |
| Battery Life | 800 hrs |