CTD48 Probe H2
Measurement of dissolved hydrogen concentrations
The determination of dissolved hydrogen concentrations is one of the most important parameters for the analysis and control of power plant water, waste water and process water.
Due to its high chemical reactivity and the rapid transfer of concentrations between liquid samples and the gas phase, its measurement is difficult despite careful sampling.
The precise and reliable in situ measurement of this parameter is possible with the CTD48 H2 probe for water up to 100 meters deep or with 10 bars of pressure. The integrated micro H2 sensor is the biggest innovation of this system, it allows a fast measurement with a very high resolution. The multiparameter probe continuously measures the dissolved hydrogen concentration of the medium, taking into account the variations in temperature and pressure of the medium.
The measurement of dissolved H2 can be done with two types of probes:
- MS08 version for portable or laboratory measurement. This kit includes a data reading box, and two connected probes. The titanium probe incorporates the H2 amperometric micro-sensor and the second probe is used to measure the temperature.
- CTD48 version for continuous application in the medium. The probe integrates several measurement sensors at the head. The titanium protective cage then comprises an H2 amperometric micro-sensor, a pH sensor, a temperature sensor and can integrate a pressure sensor. The measurement data is processed via the electronics embedded in the body of the probe.
Measurement principle
The dissolved H2 passes through the gas permeable membrane. It diffuses to the working electrode where an electrochemical oxidation reaction takes place with the electrolyte adapted to the H2S. The current generated, proportional to the H2 concentration, is measured by the probe.
This current from 0 to 400 pico-amperes is then converted and used by the electronics of the probe to be compensated according to the temperature and pressure measured.
Applications
- Water / wastewater treatment control
- Regulation of coagulation and flocculation
- Measurement of acid / base neutralization processes
- Wastewater monitoring
Advantages
- High-quality combination electrode with annular measuring diaphragm and polymerized solid electrolyte
- LED operating status indicator
- Submersible probe for in situ measurements
- Suitable measuring cell available
- Plug and play equipment with TriBox transmitter
| Measuring principle (H2) | amperometry |
|---|---|
| Measuring principle (Pressure) | Full bridge piezoresisitive |
| Measuring principle (Temperature) | Pt100 |
| Measuring principle (pH) | Combined pH electrode |
| Measuring ranges (H2) | - 0.2 µg / l ... 0.5 mg / l - 1 µg / l ... 3 mg / l |
| Measuring ranges (Pressure) | 0 ... 10 bar |
| Measuring ranges (Temperature) | - 2 ... + 35 ° C |
| Probe body materials | titanium |
| Dimensions (L x D) | Diameter 48 mm, length 400 mm |
| Weight | 1.1 kg |
| Interface (digital) | RS232 serial / FSK-telemetry option |
| Data acquisition | SST-SDA software supplied (PC-Windows) |
| Power supply and consumption | 9 ... 30 VDC |
| Consumption | 12 mA at 12 VDC |
| Service life of the H2 micro-sensor | 6 months in portable use, 10 months continuously (depends on the stress undergone by the variations in pH) |
| Intervalle de calibration | 24 months |
| Warranty | 24 months in the European Union |
| Medium / sample temperature | 0.1 ... + 30 ° C (40 ° C possible with specific calibration) |
| Ambient temperature | 0 ... + 40 °C |
| Storage temperature | 0 ... + 40 °C |
Plug-and-play installation
