If your task is soil water monitoring you know the problem: water vaporizes and is lost. If soil gets dryer than about 85 kPa, no tensiometer is able to take measurements. Still, as only little water movements occur in extreme dry soils, losing readings is tolerable. Then, when the soil gets wet again, the Tensiometer could actually restart measurements - but first it needs to be refilled again.
Now, the TS1 solves this problem. When the cup needs to be refilled and soil water is available the internal pump will draw water from the soil, refill the cup and remove all air through an exhaust outlet - all automatically. The cup is deaerated automatically, even if only a bubble is detected.
If the temperature probe indicates emerging frost, the TS1 empties itself to prevent damages caused by freezing.
Part number 45403
|Ceramic Cup||High-strength special ceramic with homogeneous porosity
Length: 60 mm
Diameter: 40 mm
||Various lengths available (standard 200 mm)
Diameter: 40 mm
Material: acrylic glass
**Please indicate shaft length on your order!**
|Accuracy||Soil water tension: ± 0.5 kPa
Temperature: ± 0.1 K
|Output signal analog:||
Selectable Ranges: 2 x 0 ... 1 V / 2 V / 5 V
|Output Signal Digital
||RS 485 tensioLINK, SDI12|
||Typically 1 mA|
|Measuring Range Soil Water Tension
||-1000 to 0 to 1000 hPa|
||Quartz clay powder, shaft water protection cover, calibration certificate, user manual|
|Measuring Range Temperature
||-30 to 70°C|
||6 to 20 VDC|
||Campbell Scientific Loggers: CR10X, 21X, 23X, CR1000, CR3000, etc|
|Cable||1.5 m; 8-pin plug M12; pigtail adapter available for connection with CSI dataloggers|
UMS uses UV-resistant, durable materials for long-term field studies.Seals and screw connectors are watertight according to IP 68.
|Acrylic Shaft diameter||7 cm|
|Acrylic Tube Length
|Ceramic Cup diameter||7 cm|
|Ceramic Cup Length
The cutting edge of the auger has a tapered tip similar to the shape of a Tensiometer or pore water sampler. Thus, the bore hole is large enough to insert the shaft, but the cup will have a tight and perfect fit to the soil.
The not recommendable slurrying of the cup with quartz clay can be avoided.
A divisible auger set includes:
|Cutting Edge||22 mm dia. x 50 cm||26 mm dia. x 50 cm|
|Tip||20 mm dia. x 5.6 cm
||24 mm dia. x 5.6 cm|
|Total length||1.25 m
|for shafts with||20 mm dia.||24 mm dia.|
|Extension rod Part no.||TBE-100|
The INFIELD7 is a multi-functional handheld read-out unit for all UMS tensiometers. Download readings to PC with accessory USB converter
Looking for a data logger for long-term installations? Contact Decagon support at 1-800-755-2751.
The tensioLINK USB converter is used for directly connecting sensors and devices with serial tensioLINK to a PC. One can configure features and read out measured data.
UMS devices with 8pin M12 connectors (e.g. TS1 or T8 tensiometers) could be directly connected to the converter without the need for a further power supply. The sensor is powered through the USB interface.
Use with the PC-Software tensioVIEW. Manual Software and Driver come along with supplied CD.
|Sensor Supply||9 VDC / 100 mA tolerance +1 V|
|Short circuit||2 Min.|
|Galvanic isolation||1 kV|
|Serial sensor interface||RS485-2 wire, ESD protection 15 kV|
|USB interface||compliant to USB 1.1 und 2.0|
Phone: 800-755-2751 or