AlphaOmega
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| Brand | AlphaOmega |
|---|---|
| Origin | USA |
| Model | 2520 |
| Measurement Ranges | 0–1%, 0–5%, 0–10%, 0–25%, 0–50%, 0–100% O₂ |
| Accuracy | ±0.1% FS |
| Linearity | ±0.1% FS |
| Response Time (t₉₀) | <10 s |
| Sensor Type | Electrochemical (O₂-specific) |
| Sample Temperature | 0–50 °C |
| Sample Pressure | 0.1–1 kg/cm² |
| Sample Flow Rate | 0.5–1.0 L/min |
| Temperature Compensation | Built-in |
| Display | 3½-digit LCD |
| Power | Rechargeable NiCd battery + universal AC adapter (battery charges during AC operation) |
| Enclosure | NEMA 1-rated polycarbonate |
| Dimensions | 5.8" H × 6.7" W × 3.4" D |
| Weight | <1 kg |
| Inlet/Outlet | Quick-connect fittings |
| Integrated Components | 12 VDC sampling pump, flowmeter with control valve at outlet |
| Analog Output | None |
| Brand | AlphaOmega |
|---|---|
| Origin | USA |
| Model | ZRO 2000 |
| Measurement Range | 0–100% O₂ (ppb–100% trace-to-full scale) |
| Accuracy | ±2% of reading (subject to clean, non-reducing sample gas) |
| Operating Temperature | 10–40 °C |
| Sample Gas Temperature Limit | ≤50 °C |
| Sample Pressure Range | 0.007–0.035 kg/cm² (≈1–5 psig) |
| Relative Humidity Limit | ≤85% RH |
| Power Input | 90–264 VAC, 50/60 Hz |
| Analog Output | Selectable 0–20 mA or 4–20 mA DC |
| Alarm Outputs | Two SPDT relays (10 A @ 30 VDC / 115–230 VAC) |
| Display | 6-digit LCD, 0.7" character height (17.8 mm) |
| Enclosure | Aluminum, NEMA 1-rated |
| Dimensions | 13" H × 10.71" W × 6.3" D |
| Sample Connection | 1/4" stainless steel compression fittings |
| Sensor Type | Heated zirconia electrochemical cell |
| Internal Audible Alarm | Yes, with front-panel mute switch |