SIS Smart Irrigation Sensor
Granular matrix sensor with linear output signal.
The SIS is a combination of the well-known Watermark(R) granular matrix soil moisture sensor type 200SS and a special amplifier which offers a fully linearised and temperature compensated DC-voltage output signal.
The amplifier uses a new, patent pending technique for the accurate measurement of the sensor element.
The linear voltage signal reduces the efforts for the electronic measuring equipment and cable connections.
The temperature compensation directly picks up the soil temperature. Thus, the otherwise problematic temperature difference between logger and sensor is avoided.
Advantages
- Linear Output Signal
- Temperature compensation
- Simple power supply
- Low power
- Programable irrigation output signal*
- Serial buslink tensioLINK*
- Temperature serial readout*
Limitations
- Generally lower accuracy compared with Tensiometers
- Slow response time particular in dry soil
Technical Information
| Measuring range | -5kPa...-200 kPa |
| Resolution | ±0.2 kPa (5...70 kPa) |
| Temperature* | ±0.1degC (-10...30degC) |
| Alarm signal* | 0 V; +5 V, 2 thresholds with hysteresis, Impedance: 10 kOhm |
| Supply | 6 ... 20 VDC, typ. 2,5 mA |
| Interface* | RS 485 / tensioLINK |
| Matrix Sensor | Watermark, 200SS |
| Size | Ø 25 mm x 116 mm |
Version SISC4-...
The Version SISC4 provide only a linear voltage output 0...2 V for the soil moisture tension.
Version SISC8-...
An extended version (SISC8) features a programmable digital alarm signal for irrigation issues and a serial interface RS 485 / tensioLINK for bus linking and temperature read-out.
- digital alarm signal (e.g. for irrigation issues)
- a serial interface RS 485 / tensioLINK
- temperature read-out with a serial interface
Configurations
| Art. No. | Description |
SISC4 |
Standard version - Cable length 1.5 m with 4-pin plug M12/IP67, no shaft |
SISC4-... |
Standard version - 4-pin plug M12/IP67, total length selectable between 20 ... 211 cm |
SISC8 |
Extended version - cable length 1,5 m with 8-pin plug M12/IP6, no shaft |
SISC8-... |
Extended version - 8-pin plug M12/IP6, total length selectable between 20 ... 211 cm |
Order information
Cable length from sensor body
1,5 m with 20 ... 120 cm total length
2,5 m with 121 ... 211 cm total length
Indicate required total length on an order, e. g. 40 cm = SISC8-40
Contact
Andreas SteinsPhone: +49 89 12 66 52 - 18
Fax: +49 89 12 66 52 - 20
E-Mail: as@ums-muc.de
contact page UMS
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