CTD Probe
Different parameters measurement and data analysis with Smartyplanet
The CTD SP36XWCTD multiparameter probe is the ideal solution for measuring water level, temperature and conductivity parameters.
It is designed for the hydrological control of different places such as rivers or water treatment plants.
The data collected by the sensors are accurate and reliable. Thanks to the full compatibility of the probe with the Smartyplanet web platform, the data is recorded and analyzed instantly.
Datasheet
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Environmental monitoring
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Surveillance of groundwater
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Water Treatment Plants
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Hydrological control
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5 ppm pressure sensor
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Mathematical Compensation of Nonlinearities and Temperature Dependencies
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Robust stainless steel case
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Lightning protection installed
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SDI-12 interface
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Wide range of level measurement
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Long-Term Stability
Specifications
| SENSOR PARAMETERS | SPECIFICATIONS |
|---|---|
| PRESSURE | |
Relative pressure Absolute pressure Water column meters | 0,3 1 3 10 30 0,8..2,3 0,8...4 0,8...11 0,8...31 3 10 30 100 300 |
| Overload resistance | max. 300% |
| Technology | Oil-filled, insulated, piezoresistive Pressure transducer in a metal housing |
| Resolution | typ. 5 ppm (corresponding to 0,0005 %FS) |
| Accuracy | ± 0,02 %FS max. (0,3 bar Range: ± 0,04 %FS) |
| Temperature range | 0 to 50ºC |
| Total error | ± 0,1 %FS max. (0,3 bar Range: ± 0,2 %FS) |
| Operating temperature | -20 to +80ºC |
| Measuring interval | 120, 240 (default), 480 Hz |
| Stability | range > 1 bar: ± 0,1 %FS max. range ≤ 1 bar: ± 1 mbar max. |
| Dependance grade on locations | ± 1,5 mbar max. |
| TEMPERATURE | |
| Measurement range | -10 to +80ºC |
| Technology | Sillicon |
| Resolution | < 0,01 °C |
| Accuracy | Sillicon sensor typ. ± 0,3 °C Pt1000 sensor: ± 0,1 °C max. |
| Measurement interval | 12 Hz TOB 6 Hz Pt1000 without conductivity 1 Hz Pt1000 with conductivity |
| CONDUCTIVITY | |
| Measurement range | 0 μS/cm…200 mS/cm |
| Selectable ranges with software | 0,2 / 2* / 20 / 200* mS/cm |
| Technology | 6 platinum electrodes, 4-wire technology |
| Temperature range | -10 to +60ºC |
| Resolution | < 0,05% of selectable range |
| Accuracy | < 2,5% of selectable range |
| Measurement interval | 1 Hz |
| PARAMETERS | SPECIFICATIONS | |
|---|---|---|
| ELECTRICAL DATA | RS485 | SDI-12 |
| Power supply | 3,2 to 32 VDC | 6 to 32 VDC |
| Power consumption | <6mA (without conductivity) <14mA (with conductivity) | <0,1mA <5,5mA (without conductivity) <13 mA(with conductivity) |
| Starting time | <300ms (P1, TOB1) 3s, 6s max. (P1, T, Con) | <1s <3s |
| GND | > 10 MΩ @ 300 V | |
| Resistance | > 10 mio. pressure cycles 0…100 %FS @ 25 °C |
|
| Storage temperature | -20 to +80ºC | |
| DIGITAL INTERFACE | RS485 | SDI-12 |
| Communication protocol | MODBUS RTU KELLER bus | SDI-12 V1.3 |
| Baud Rates | 9600*, 115’200 bit/s | 1200 bit/s |
| Identification | Group Class: 5.21 | |
| Pressure units | bar | bar, mbar, mH2O, psi, ftWC, inWC |
| Temperature units | ºC | ºC, ºF, K |
| Conductivity units | mS/cm | mS/cm |
| MECHANICAL DATA | ||
| Dimensions | ø 22 mm | |
| Weight | 170 g without wire | |
| Housing material | 316 stainless steel | |
| Wire materail | Relative pressure: PE Absolut pressure: PE |
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| STANDARDS AND PROTECTION | ||
| EMC standard | EN 61000-6-2: 2005 EN 61000-6-3: 2007 EN 61326-2-3: 2006 |
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| Reverse polarity and overload protection | ± 32 VDC supply and RS485 ± 24 VDC SDI-12 |
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| Protection class | IP68 | |
