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Alpha Omega Instruments
Alpha Omega Instruments Series 3500 Trace Oxygen Transmitter
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AOI Series 3500: 0–10 to 0–20,000 ppm O₂; loop-powered 4–20 mA; ±1% FS. RFQ.
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Key parameters
Measuring range
0–10 to 0–20,000 PPM O₂ (selectable ranges)
Accuracy
±1% of full scale (±5% of full scale on ranges ≤0–5 ppm)
Output
4–20 mA DC loop; 600 ohm loop resistance @ 24 VDC
Supply
14–32 VDC loop-powered
Sensor type
Long-life ambient-temperature electrochemical sensor; optional CO₂-resistant sensor
Response Time
90% of full scale in <10 seconds (typical)
Fits loop-powered trace oxygen transmission where you need an Alpha Omega Instruments Series 3500—selectable 0–10 to 0–20,000 ppm O₂ ranges, ±1% of full scale accuracy (±5% FS on ≤0–5 ppm), 4–20 mA DC loop output at 14–32 VDC, and typical response under 10 seconds to 90% FS.
Key advantages
- Ranges — 0–10 to 0–20,000 ppm O₂
- Accuracy — ±1% FS (±5% FS ≤0–5 ppm)
- Output — 4–20 mA loop; 600 Ω @ 24 VDC
- Supply — 14–32 VDC loop-powered
- Response — 90% FS <10 s typical
Typical applications
- Trace O₂ transmitters.
- Loop ppm O₂ panels.
- Inerting skids.
Selection guide
- Range
- CO₂-resistant sensor
- Sample 0.5–1.0 L/min
Common mistakes
- Air in sample at ppm.
- Loop voltage below 14 V.
- Liquid carryover.
When to RFQ / what to tell us
- Range/sensor.
- Quantity, ship-to.
Request a Quote · Get selection help
Specs
| Spec | Value |
|---|---|
| SKU | 45773 |
| Brand | Alpha Omega Instruments |
| Model | Series 3500 |
| Product type | Oxygen Transmitter |
| Measuring range | 0–10 to 0–20,000 PPM O₂ (selectable ranges) |
| Accuracy | ±1% of full scale (±5% of full scale on ranges ≤0–5 ppm) |
| Response time | 90% of full scale in <10 seconds (typical) |
| Sensor type | Long-life ambient-temperature electrochemical sensor; optional CO₂-resistant sensor |
| Output signal | 4–20 mA DC loop; 600 ohm loop resistance @ 24 VDC |
| Supply voltage | 14–32 VDC loop-powered |
| Operating temperature | 40° to 104°F (5° to 40°C) |
| Sample flow rate | 1.0 to 2.0 SCFH (0.5 to 1.0 L/min) |
Documents
FAQ
Q: Power? A: 14–32 VDC loop-powered.
Q: Accuracy? A: ±1% FS (±5% ≤0–5 ppm).
Q: What should I send for a quote? A: Range/sensor, quantity, ship-to.
Links
| Parameter | Value |
|---|---|
| Measuring range | 0–10 to 0–20,000 PPM O₂ (selectable ranges) |
| Accuracy | ±1% of full scale (±5% of full scale on ranges ≤0–5 ppm) |
| Output | 4–20 mA DC loop; 600 ohm loop resistance @ 24 VDC |
| Supply | 14–32 VDC loop-powered |
| Sensor type | Long-life ambient-temperature electrochemical sensor; optional CO₂-resistant sensor |
| Response Time | 90% of full scale in <10 seconds (typical) |
| Operating Temperature | 40° to 104°F (5° to 40°C) |
| Sample Flow Rate | 1.0 to 2.0 SCFH (0.5 to 1.0 L/min) |
| Enclosure | Polycarbonate NEMA 4 (IP66) |
| Warranty | 2 years electronics / 1 year sensor |