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SK08-BFT-WMT Soil Moisture & Temperature Sensor

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Arcus
£358.56 (inc VAT) £298.80 (exc VAT)
SKU:
30805001
Weight:
0.50 KGS
Availability:
Usually ships in 5 - 10 working days

 Product Description

The KNX Sensor Soil Humidity / Temperature SK08-BFT-WMT is a sensor / controller from the series S8 for recording the soil humidity and the soil temperature.

The sensor / controller is equipped with an external sensor device which is inserted into the ground at the area to be measured.

The device has an integrated KNX bus coupler and does not require additional voltage.

The transducer is located in a high-strength, extremely robust stable impact ABS plastic housing. Cover and base have a revolving groove and tongue system with neoprene gasket. The housing is IP65.

In the application software a separate controller ( 2-position or PI controller with continuous or pulsed output ) is available for every channel.

Other functions include maximum and minimum thresholds and a help key where the set point and thresholds can be switched.

The sensor is configured with ETS ( KNX Tool Software ) and the application program. Controlling functions such as signal threshold and diverse adjustments are set using ETS ( KNX Tool Software ).

Applications

- Decentralized irrigation and watering control for gardens and landscaping
- Active sprinkling control for flat roofs with vegetation
- Industrial soil humidity controller for areas such as snail and insect breeding
- Recording of soil humidity and soil temperature
- Sprinkling control via integrated control functions
- Environmentally friendly and timed sprinkling control ( early afternoon )
- Alarm when upper or lower threshold for soil humidity is surpassed

Technical Details

Measured Data: Soil moisture ( suction power ), soil temperature
Sending Options: no sending, cyclical sending when change occurs
Parameter: Periodic sending with variable cycle duration, sending when change occurs with variable hysteresis
Object type soil moisture: 2-Byte float, 4-Byte float
Object type soil temperature: 2-Byte float, 4-Byte float
Controller Modi:

Steady PI controller

Switched PI controller (PWM)

Two-Position controller

Two-Position controller Pulsed

Parameter Steady PI controller: Setpoint, reset time, proportional factor, controller mode
Parameter Switched PI controller (PWM):

Setpoint, reset time, proportional factor, controller, cycle

duration, threshold pitch

Parameter Two-Position controller: Setpoint, differential gap, controller mode
Parameter Two-Position controller Pulsed:

Setpoint, differential gap, controller mode , cycle duration,

duty cycle

Lock Function: All controller parameterizable as enable or lock
Controller Variables Output:

depends on Controller Modi

1-Byte unsigned, 1-Bit Switch

Setpoint value send cyclical: None or 10-250 seconds, parameterizable
Limits: Lower limit, Upper limit
Auxiliary value: Setpoint, Upper limit or Lower limit
Bus power failure: Saving changed auxiliary quantities, parameterizable
Measured value shift: Soil temperature
Ambient Temperature Electronic Measuring
Equipment Casing:

Operation: -20 .. +55°C

Storage: -20 .. +85°C

Ambient Humidity: 0 .. 95% rH not condensating
Ambient Temperature Watermark®:

Storage: -30 .. +55°C

Operation: -25 .. +45°C

Ambient Temperature Watermark®: 0 .. 99% rH
Measuring range soil moisture: 1 .. 2000 hPa/mbar, 1 .. 200.000 Pa
Accuracy soil moisture: 1 hPa/mbar, 200.000 Pa
Resolution soil moisture: 0,01 hPa/mbar, 1 Pa
Measuring range soil temperature: -25 .. +45°C
Accuracy range soil temperature: ± 1°C
Operating Voltage: EIB/KNX bus voltage 21 .. 32VDC
Power Consumption: approx. 240mW ( at 24VDC )
Auxiliary Supply: not required
Bus Coupler: integrated
Start-up with ETS: ARC_S8.VD2 Product: S8-BFT
Curcuit Points: EIB-2-pole clamps ( red / black )
Protection Class: IP65
Assembly Type Transducer: Assembly with 2 screws finery
Casing Transducer: ABS plastic grey
Casing Dimensions: ( 115 x 65 x 55 ) mm ( L x W x H )
Article Number: 30805001
Probe: Watermark®-WMT Connecting cable 5m

 

Downloads

Application Description
ETS File
Info Watering
Installation and Operating Instructions
Specification
Placement Depths

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