Many industrial processes require continuous oxygen measurement without a local display. The ALPHA OMEGA INSTRUMENTS™ Series 3500™ and 3510™ Trace Oxygen Transmitters provide dependable ppm oxygen measurements that integrate directly into PLC, DCS, SCADA, and OEM control systems through a standard 4–20 mA output.
Available in both loop-powered (Series 3500) and AC/DC-powered (Series 3510) configurations, these transmitters combine a long-life electrochemical sensor, optional CO₂-resistant technology, rugged NEMA 4X construction, and flexible sample conditioning options to deliver reliable trace oxygen monitoring in demanding industrial environments.
What Is a Trace Oxygen Transmitter?
A trace oxygen transmitter continuously measures oxygen at ppm concentrations and sends the measurement directly to a PLC, DCS, SCADA system, recorder, or OEM control panel using a standard 4–20 mA analog signal.
Unlike standalone analyzers, transmitters are designed for:
- Automated process control
- Remote monitoring
- OEM equipment integration
- Skid-mounted systems
- Industrial gas distribution
- Continuous unattended operation
Why Choose the Series 3500™ & 3510™?
Long-Life Electrochemical Sensor
The sealed ambient-temperature electrochemical sensor provides up to three times the functional life of many conventional fuel-cell sensors while eliminating routine electrolyte maintenance.
Flexible Power Options
Series 3500
- True loop-powered
- 14–32 VDC
- Ideal for PLC and DCS installations
Series 3510
- 115/230 VAC or 24 VDC
- Optional sample pump
- Optional solenoid valves
- Expanded sample conditioning
Which industries use the Series 3500 and 3510?
Typical industries include:
- Semiconductor manufacturing
- Industrial gas production
- Food & beverage packaging
- Pharmaceutical manufacturing
- Petrochemical processing
- Welding
- Research laboratories
- Chemical processing
Built for Industrial Automation
Features include:
- 4–20 mA analog output
- NEMA 4X (IP66) enclosure
- Factory calibration
- Pressure regulators
- Flow meters
- Sample filters
- Optional explosion-proof housing
- Optional sample pump (3510)
Wide Measurement Range
Available measurement ranges from below 1 ppm up to 20,000 ppm oxygen support applications ranging from ultra-high-purity gases to general industrial process monitoring.
Optional CO₂-Resistant Sensor
For applications containing carbon dioxide, an optional proprietary sensor is available to maintain measurement performance where conventional potassium hydroxide-based sensors may experience shortened life.
OXYGEN ANALYZERS RESOURCES AND MANUALS
Need service or calibration for your oxygen analyzer? No problem. We are ready to assist you with any technical or service-related inquiries.
Just complete our Oxygen Monitor RMA.
SALES | TRAINING INQUIRIES
AMERICAS: info.americas@process-insights.com
EMEAI (includes India): info.emeai@process-insights.com
APAC: info.apac@process-insights.com
CHINA: info.cn@process-insights.com
OUR TRACE & PERCENT OXYGEN Analyzers / OXYGEN DEFICIENCY MONITORS
Series 1000™
Series 1300™
ZRO 2000™
OXY-SEN™
Series 2000™
Series 2520™
Series 3000™
Series 3500 / 3510™
Series 3520™
COMPARISON CHART
| Product Series | 1000 | 1300 | 2000 | 3000 | 3500 | 3510 | 3520 | OXY-SEN |
|---|---|---|---|---|---|---|---|---|
| Oxygen Ranges | ||||||||
| 0-10,000 PPM | X | |||||||
| 0-5,000 PPM | X | X | ||||||
| 0-1,000 PPM | X | |||||||
| 0-100% | X | X | ||||||
| 0-30% | X | X | ||||||
| Multiple Range Capabilities | 3 | 4 | ||||||
| Confined Space Safety Monitors | X | X | ||||||
| Features & Options | ||||||||
| Analog Recorder Outputs | 2 | 2 | 2 | 2 | 1 | 1 | 2 | |
| Number of Alarms | 3 | 9 | 3 | 3 | ||||
| Oxygen Alarm Relays | 3 | 9 | 3 | 3 | ||||
| AC/DC Powered | X | X | X | X | X | X | ||
| AC Powered with Optional Battery Operation | X | |||||||
| Loop Powered Transmitter (no display) | X | |||||||
| Blind Transmitter | X | X | ||||||
| Standard RS232 | X | |||||||
| Optional Remote Sensor | X | |||||||
| Optional Sampling Systems Components | X | X | X | X | X | X |