SEBA Hydrometrie
Qualilog-8
Robust, pluggable multi-parameter sensor from 1.4404 stainless steel to accommodate up to eight sensors (water level, temperature, conductivity, pH, redox potential, oxygen, turbidity, etc.)
Overview
Individually configurable:
Depending on the measuring task at hand, the MPS-D8 can be individually equipped with a maximum of eight water quality sensors and can detect up to 13 parameters.
Simple handling:
Special bayonet locks grant the users a simple and quick replacement of worn sensors. The calibration and configuration of the MPS-D8 is carried out using a special USB-RS485 interface cable together with ConfigPC operating software (Windows). This will automatically detect if a probe is spent and must be replaced.
Robust:
The housing of the MPS-D8 is made of high-quality 1.4404 stainless steel. The probe can thus be used even under adverse ambient conditions (e.g. landfill or other contaminated sites).
Variable:
The proven and robust SEBA plug system of the MPS-D8 allows both the connection to mobile handsets (SEBA KLL-Q-2 Type electric water level gauge (KLL), Checker-2) and stationary data collectors with data transmission (UniLogCom, LogCom/FlashCom) or without data transmission (Qualilog8).
Specification
Water Level
| Sensor | Relative pressure sensor |
|---|---|
| Measurement Principle | Capacitive with ceramic measurement cell |
| Measuring Range | 0-2 / 1 /4 /5 /20 /40 / 100/ 200m water column or according to specifications |
| Measuring Accuracy | ± 0.1% FS |
| Long Term Stability | ± 0.1% / year |
Water Temperature
| Sensor | NTC30 with polynomial linearisation |
|---|---|
| Measurement Principle | NTC resistance |
| Measuring Range | -5 - +50°C |
| Measuring Accuracy | 0.1°C |
| Dissolution | 0.01°C |
| Pressure Range | 0-50 bar |
Conductivity
| Sensor | 4-electrode measuring cell |
|---|---|
| Measuring Range |
0-200mS/cm (total) Automatic measuring range switchover: 0-200µS/cm; 0,2-2mS/cm; 2,2mS/cm; 20-200mS/cm |
| Measuring Accuracy | ± 1µS/cm for measuring range of 0-200µS/cm +/- 0,5% for measuring range of 0,2-200mS |
| Dissolution | 0.0001mS/cm |
| Temperature | -5°C-50°C |
| Pressure Range | 0-50 bar |
pH
| Sensor | Glass Electrode |
|---|---|
| Measuring Range | 0-14pH |
| Measuring Accuracy | ± 0.1pH |
| Dissolution | 0.01 pH |
| Temperature | 0°C-50°C |
| Pressure Range | 0-20 bar |
Redox
| Sensor | Glass Electrode |
|---|---|
| Measuring Range | -1200mV-1200mV |
| Measuring Accuracy | ± 10mV |
| Dissolution | 0.1mV |
| Temperature | 0°C-50°C |
| Pressure Range | 0-20 bar |
Oxygen (Alternative)
| Sensor | Optical |
|---|---|
| Measuring Range |
0-25mg/l (at 25°C, 1013hPa) 0-40mg/l (at 3°C, 1013hPa) |
| Measuring Accuracy | ± 0.5% FS |
| Dissolution | 0.001mg/l |
| Temperature | -5°C-50°C |
| Pressure Range | 0-12 bar |
Turbidity (Alternative)
| Sensor | Optical |
|---|---|
| Measuring Range | 0-1000 NTU and 0-5000 NTU |
| Measuring Accuracy | ± 1% of the respective end of measuring range |
| Dissolution | ± 0.0125% of the respective end of measuring range |
| Temperature | 0°C-50°C |
| Pressure Range |
0-10 bar (with wiper) 0-20bar (without wiper) |
Housing
| Material | 1.4404 stainless steel (standard) |
|---|---|
| Dimensions | 48mm, length: 493mm |
| Measuring Accuracy | ± 1% of the respective end of measuring range |
| Protection Class |
Probe: IP68 RS485 Interface: IP67 (immersion depth with dry cartridge up to 3m, depending on cable length) |
| Outputs | RS485 (SHWP) standard, MODBUS, SDI-12, 4-20mA (Optional) |
| Communications Interface |
RS485 |
Others
| Power Supply | 4-15VDC or 8-15VDC with optical sensors |
|---|---|
| Operating Temperature | Parameter dependent |
| Hanging Depth | up to 1000m |
| Cable |
Reinforced measuring cable with pressure compensation line Gore-tex membrane, desiccant cartridge with SilicaGel for protection of the pressure compensation line |
