Campbell-scientific EnviroSCAN Sentek Water Content Profile Probe Instrukcja Użytkownika Pobierz pdf (Strona 8)

EnviroSMART

Soil Water Content Profile Probes

6. Specifications

Feature EnviroSMART

SDI-12

Maximum cable length to

logger or third party device

60 m (200 ft)*

Maximum sensors per standard

probe

Sensor Measuring Principle High frequency capacitance

Output Options SDI-12

Protocol options SDI-12

Interface Measuring Principle 16 Bit pulse count

Output Resolution 16 Bit

Output Method Serial data

Current Consumption 250 µA @ Sleep

66 mA @ Standby

100 mA @ Sampling

Reading range Water Content/Salinity

0 to ~65%/0 to 17 dSm

-1

Temperature effects

±3% 5°C to 35°C

Operating temperature range -20°C to +75°C

Time to read one sensor 1.1 seconds

Sphere of influence 99% of the reading is taken within a 10 cm

radius from the outside of the access tube

Sensor diameter 50.5 mm

Access tube diameter 56.5 mm

Probe length 50 cm (20 inches)

* Based on SENSDI12CBL-L cable.

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Campbell-scientific EnviroSCAN Sentek Water Content Profile Probe Instrukcja Użytkownika Strona 8