○ Superb sensitivity, precision & accuracy with virtually no drift
○ Fast, continuous, real-time measurements without interference
○ Large dynamic range with high linearity
○ Field and laboratory deployable with no consumables
○ Installed and operational in minutes
○ Rugged and insensitive to changes in ambient temperature, pressure or vibration
○ 1 year warranty
○ Response time (seconds instead of minutes)
○ Accuracy, Precision and LDL at PPT levels.
○ Stability : no calibration
○ Maintenance cycle: ( 6month,1year)
○ Preventative Maintenance @ very low price
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Performance Specifications |
SI 3401 |
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H2O |
HCI |
HF |
NH3 |
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Precision |
20 ppm + (8 x %H2O) (10 sec) 10 ppm + (4 x %H2O) (100 sec) |
≤75 ppt (10 sec), ≤25 ppt (100 sec) |
≤40 ppt (10 sec), ≤15 ppt (100 sec) |
≤300 ppt (10 sec), ≤100 ppt (100 sec) |
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Lower Detectable Limit (100 sec., 3σ) |
30ppm |
75 ppt |
40 ppt |
300 ppt |
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Method Detection Limit (per Semi C10-1109) |
40ppm |
250 ppt |
500 ppt |
500 ppt |
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Linearity (per IEC 61207) |
±1% |
±1% |
±1% |
±1% |
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Accuracy at span |
±5% @ full scale |
±5% @ full scale |
±5% @ full scale |
±5% @ full scale |
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Accuracy at zero |
±40 ppt |
±50 ppt |
±25 ppt |
±150 ppt |
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Instrument-to-Instrument Consistency |
±5% @ full
scale |
±5% @ full
scale |
±5% @ full scale ±25 ppt @ zero |
±5% @ full
scale |
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Measurement Range |
0–40000 ppm |
0-2 ppm |
0 – 1 ppm |
0 – 10 ppm |
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Measurement Interval* |
<9 seconds |
<5 seconds |
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Sample Flow Rate |
~2 slm |
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Combined Response Times (T90/10 + T10/90) @ 20 ppb |
<20 sec (100 ppb challenge) |
<3 min |
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Fall Times T90/10 @ 20 ppb |
<10 sec (100 ppb challenge) |
<1 min |
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SI3401 Series System Specifications |
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Measurement |
Technique CRDS |
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Calibration Period Recommendation |
15 to 35°C (operating); -10 to 50°C (storage) |
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Ambient Humidity |
<85% RH non-condensing |
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Accessories Pump |
(external, included), keyboard (included), mouse (included), LCD monitor (optional) |
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Outputs |
RS-232, Ethernet, USB |
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Fittings |
1⁄4” Swagelok® PFA Fittings |
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Dimensions Analyzer |
16.7” w × 8.4” h x 24.8” d (43 × 21.3 × 63 cm) |
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Weight |
78 lbs. (35.4 kg) including pump |
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Power Requirements |
100–240 VAC, 47–63 Hz (auto-sensing), <260 W start up (total): 110 W (analyzer), 120 W (pump) at steady state |
