Meter Envrionment ECH2O EC-5 Moisture at Gh_BL7

measurement of volumetric water content in soil at 15 cm depth, single point measurements, 30 min interval, 24/7 |
measurements since 2000; since 2015/2016: Meter Envrionment ECH2O EC-5.
The identically constructed sensor is installed at the monitoring sites Rh_BL1, S-bf_BL2, R-M1858_BL3, HM_BL4, Kk_BL5, O-p_BL6, Gh_BL7 and Fk_BL8


MEASUREMENT SPECIFICATIONS
Volumetric water content (VWC)
Range: 0%–100%
Resolution: 0.001 m3/m3 VWC in mineral soils, 0.25% in growing media
Accuracy:Generic calibration: ±0.03 m3/m3 typical in mineral soils that have solution EC <8 dS/m
Medium specific calibration: ±0.02 m3/m3 in any porous medium (± 2%)

COMMUNICATION SPECIFICATIONS
Output: 10%–50% of excitation voltage (250–1,250 mV at 2,500 mV excitation)
Data logger compatibility: METER data loggers (ZL6, EM50/60 series, Em5b) or any data acquisition systems capable of switched 2.5–3.6 VDC excitation and single-ended voltage measurement at greater than or equal to 12-bit resolution. NOTE: These calibration constants only apply to 2,500-mV excitation; use of these numbers with any other excitation voltage results in erroneous readings!

PHYSICAL SPECIFICATIONS
Dimensions: Length: 8.9 cm (3.50 in); Width: 1.8 cm (0.71 in); Height: 0.7 cm (0.28 in)
Prong length: 5 cm (1.97 in)
Operating temperature range: Minimum: –40 °C; Typical: NA; Maximum: +60 °C; NOTE: Sensors may be used at higher temperatures under certain conditions; contact Customer Support for assistance.
Cable length: 5 m (standard); 40 m (maximum custom cable length); NOTE: Contact Customer Support if a nonstandard cable length is needed.
Connector types: 3.5-mm stereo plug connector or stripped and tinned wires

ELECTRICAL AND TIMING CHARACTERISTICS
Supply voltage (VIN to GND): Minimum: 2.5 VDC at 10 mA; Typical: NA; Maximum: 3.6 VDC at 10 mA
Measurement duration: Maximum 10 ms

COMPLIANCE
Manufactured under ISO 9001:2015
EM ISO/IEC 17050:2010 (CE Mark)
2014/30/EU
2011/65/EU
EN61326-1:2013
EN50581:2012