Technical Specifications / Rev 2026.1

KST-HHM-ODO Meter

Optical fluorescence quenching sensor for dissolved oxygen measurement.

To size your equipment
Measurement range, sampling points, handheld or inline use, the water source and how you log readings.

Sensor Performance

Measurement PrincipleOptical Fluorescence Quenching
Range0 - 50 mg/L (0 - 500% Saturation)
Resolution0.01 mg/L
Response Time< 30 Seconds
Temp Range0 - 50°C

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Accuracy Specifications

Concentration RangeAccuracy
0 - 20 mg/L±1% or ±0.2 mg/L
> 20 mg/L±5% or ±0.6 mg/L

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Hardware Specs

Body MaterialTitanium Alloy
Power9-24V DC (< 0.1W) / 18650 Batteries
OutputRS-485 (Modbus RTU)
Max PressureUp to 6 bar

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Engineering Note: Calibrate in air (100% saturation) once per week for best accuracy.
Kairospace KST-HHM-ODO Meter
Specify This Unit

Measure the delta yourself

0 to 50 mg/L at 0.01 mg/L resolution, ±1% below 20 mg/L, with RS-485 Modbus RTU output so readings land in your logger instead of a notebook. To quote one, we need these five things.

  • RangeThe dissolved-oxygen range you expect, in mg/L.
  • Sampling pointsHow many points you read, which sets the number of probes.
  • Handheld or inlinePortable checks, or a probe fixed on the line.
  • Water sourceWell, municipal, surface or process water, with temperature and line pressure (up to 6 bar).
  • LoggingManual notes, or an RS-485 Modbus RTU logger.

Values marked as reference on this page are confirmed by engineering in the quote.

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An engineer replies within 48 hours, with a proposal or with the questions we need to write one.