From advanced research & development to diagnostic, quality control, and other industrial commercial testing applications, dissolved oxygen (DO) measurements carry a range of impacts. AlpHa has a variety of invasive and non-invasive (fiberoptic) sensor solutions uniquely tailored to meet the needs of the most challenging laboratory applications, including:
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AlpHa’s DO portfolio includes optical, polarographic, and galvanic sensing technologies, and the flexibility of supplying the entire DO sensing solution or simply a customized electrode, membrane cap, or optical sensing patch. DO solutions feature detection limits down to parts per billion (ppb) and measurement range options of 0 – 200% or 0 – 500% saturation. Output options include analog (4 – 20 mA or 0 – 5 V) or digital (RS-485 MODBUS RTU) formats with the ability to seamlessly integrate with third party equipment.
AP Series | HCR Series | |
Response Rate | No Overcoat: T90 ~1 sec | No Overcoat: T90 ~1 sec |
White Overcoat: T90 ~1 min | Black Overcoat: T90 ~1 min | |
Black Overcoat: T90 ~1 min | ||
Dynamic Range in Gas | 0 – 100% O2 / 0 – 760 mmHg O2 | 0 – 100% O2 / 0 – 760 mmHg O2 |
Dynamic Range in Water (DO) | 0 – 40 ppm (wt) | 0 – 40 ppm (wt) |
Dynamic Range in Other Liquids | 0 to Oxygen Saturation Level | 0 to Oxygen Saturation Level |
Resolution in Gas | 0.005% O2 / 0.04 mmHg | 0.05% O2 / 0.4 mmHg |
Resolution in Water (DO) | 0.002 ppm (wt) / 2.0 ppb (wt) | 0.02 ppm (wt) / 20 ppb (wt) |
Resolution in Other Liquids | 0.005% of Oxygen Saturation Level | 0.05% of Oxygen Saturation Level |
Accuracy | 5% of Reading | 5% of Reading |
Lowest Detectable Level (gas) | 0.005% O2 / 0.04 mmHg | 0.05% O2 / 0.4 mmHg |
Lowest Detectable Level (water) | 0.002 ppm (wt) / 2.0 ppb (wt) | 0.1 ppm (wt) / 100 ppb (wt) |
Lowest Detectable Level in Other Liquids | 0.005% of Oxygen Saturation Level | 0.25% of Oxygen Saturation Level |
Sensor Drift | 0.002 O2% per Day | 0.001 O2% per Hour |
Operating Temperature | -50 to 80°C | -50 to 120°C |
Recommended Patch Replacement | 1 Year | 1 Year |
AlpHa Measurement Solutions is a liquid test and measurement platform serving the critical needs of applications in environments requiring process control, automation, analysis, and monitoring.
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