Watermark
The measurement principle of the Watermark sensors is similar to that of the gypsum block system. Whereas the special sensor does not dissolve in the soil and has a more consistent distribution of pores so that more precise measurements are possible. The sensors are permanently buried in the soil and have an average life of 3 to 5 years. They do not require any maintenance during this time and are frostproof. A soil temperature sensor can be be used for temperature compensation. This method of soil moisture tension measurement may be used as a substitute for tensiometers if it is to be expected that the tensiometer will frequently fall dry at the installation site. The sensors may be connected either to a data logger or to the specific handheld for recording and reading out the data.
Advantages
- no maintenance
- frostproof
- good suitability for long term measurements
- price efficient
Technical specifications
Measurement range: | 0 ... 200 kpa |
Operating temperature: | 1 ... +80°C |
| Ceramic body: | Ø 25 mm, Length 70 mm |
| Sensor length: | 80 mm |
Ordering Details:
| Art.-Nr.: 112100 | With temperature compensation |
| Art.-Nr.: 114501 | Without temperature compensation; without rod |
| Art.-Nr.: 114502 | Without temperature compensation; rod length 75 cm |
| Art.-Nr.: 114503 | Without temperature compensation; rod length 120 cm |
