Orion Star A323 Portable Dissolved Oxygen Meter with RDO Sensor
The Thermo Scientific Orion Star A323 Portable Dissolved Oxygen Meter is a reliable and high-performance solution for accurate dissolved oxygen and temperature measurement in laboratory, field, and demanding environmental applications. Designed for professionals who need dependable results wherever testing is required, this portable DO meter combines rugged construction, advanced measurement functions, and easy data management in one compact instrument.
This model is supplied as an RDO/DO portable meter kit with an RDO optical dissolved oxygen sensor, protective meter armor, and a hard-sided field case, making it ideal for on-site water quality testing and challenging field conditions.
Accurate Dissolved Oxygen and Temperature Measurement
The Orion Star A323 meter measures dissolved oxygen in both mg/L and percent saturation, while also providing temperature readings for improved measurement reliability. It supports both RDO optical DO probes and polarographic DO probes, giving users flexibility across different testing requirements.
- Measures dissolved oxygen in mg/L and % saturation
- Supports RDO optical and polarographic DO sensors
- Automatic temperature compensation using ATC
- Manual salinity input for enhanced correction
- Built-in barometer for automatic pressure compensation
Built for Field and Laboratory Use
With an IP67-rated waterproof housing, the Orion Star A323 is built to perform in tough environments. Its rugged design helps protect the meter during field testing, while the included protective armor and field case make transportation and daily use more convenient.
The backlit graphic LCD display provides clear instructions and easy-to-read measurement data, helping users operate the device confidently even in low-light or outdoor conditions.
Advanced Calibration and Reading Modes
The meter offers multiple calibration options to support accurate dissolved oxygen testing. Users can calibrate using water-saturated air, air-saturated water, a custom Winkler titration value, or zero-point calibration.
- Water-saturated air calibration
- Air-saturated water calibration
- Custom value calibration using Winkler titration
- Zero-point calibration option
- Calibration log for the 10 most recent calibrations
Smart Data Logging and Easy Transfer
The Orion Star A323 includes a powerful data logging system that stores up to 5000 measurement sets with date and time stamps. Optional sample ID and user ID functions make it easier to organize readings and maintain traceability.
Data can be transferred easily to a computer or printer using USB or RS232 connections. The meter is also compatible with Orion Star Com software for convenient data management.
Flexible Measurement Modes
To support different testing workflows, the meter includes selectable reading modes that help capture stable and reliable results.
- Auto-Read: Holds the reading once it becomes stable
- Continuous: Displays changing readings with hold option
- Timed: Logs measurements at selected time intervals
Key Features
- Portable dissolved oxygen and temperature meter for field and laboratory testing
- Compatible with RDO optical and polarographic DO probes
- IP67 waterproof housing for rugged field use
- Backlit graphic display with user-friendly onscreen instructions
- Stores up to 5000 data point sets with date/time stamp
- Built-in barometer for pressure compensation
- Automatic temperature compensation
- High/low limit alarms and calibration due alarm
- Non-volatile memory protects stored data and settings
- USB and RS232 outputs for data transfer
- Powered by 4 AA batteries or optional universal power adapter
- Includes RDO optical DO sensor, meter armor, and field case
Technical Specifications
| Product Name | Orion Star A323 Dissolved Oxygen Portable Meter |
|---|---|
| Catalog Number | STARA3235 |
| Brand | Thermo Scientific |
| Probe Type | RDO Optical DO Sensor |
| Measurement Modes | Dissolved Oxygen (% Saturation), Dissolved Oxygen (mg/L with Temperature and Barometric Pressure) |
| RDO Range | 0.00 to 50.00 mg/L |
| Polarographic DO Range | 0.00 to 90.00 mg/L |
| Temperature Range | 0.0°C to 50.0°C |
| Display | Backlit Graphic LCD |
| Memory | Up to 5000 data points with date and time stamp |
| Outputs | USB, RS232 |
| IP Rating | IP67 Waterproof Housing |
| Power Supply | 4 AA batteries included or optional universal AC adapter |
| Battery Life | Up to 800 hours |
| Dimensions | 24 cm x 10 cm x 6.5 cm |
| Weight | 0.5 kg |
| Warranty | 3 Year Meter Warranty |
Included in the Kit
- Orion Star A323 RDO/DO portable meter
- RDO optical dissolved oxygen sensor
- Protective meter armor
- Hard-sided field case
- 4 AA batteries
Ideal Applications
The Orion Star A323 Portable DO Meter is suitable for a wide range of dissolved oxygen and temperature testing applications, including water quality analysis, environmental monitoring, wastewater testing, aquaculture, research laboratories, and field sampling.
Why Choose the Orion Star A323 DO Meter?
Choose the Orion Star A323 if you need a durable, accurate, and easy-to-use dissolved oxygen meter that performs reliably in both field and laboratory environments. With optical RDO sensor compatibility, waterproof construction, advanced calibration options, and extensive data logging, this meter is an excellent choice for professionals who require dependable dissolved oxygen measurements.
