Decagon Devices MAS-1 Manual do operador - Página 7
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2 ABOUT THE MAS-1
1. Red wire: (+) supply
2. Black wire: (-) output
3. Shield: Not connected
Measurement
Type: Volumetric water content (VWC)
Range: 0 to 100% VWC typical
Resolution: Depends on current measurement (data acquisi-
tion) device
Accuracy:
growing media up to 65% VWC, above which accuracy lessens.
Increased accuracy can be achieved with a medium specific cali-
bration. For more information on how to perform your own me-
dia specific calibration, or to have Decagon's calibration service
perform one for you, visit us online at http://www.decagon.com
Output: 4-20 mA current proportional to VWC
Sensor measurement interval: 1 second
Operating Environment
Temperature:
Sensors can be used at higher temperatures under some condi-
tions. Contact Decagon for more details
Physical Properties
Dimensions: 8.9 cm x 1.8 cm x 0.7 cm
Cable: 2 m or 5 m (standard), 3 wire (22 AWG tinned Red and
Black wires, 24 AWG tinned bare wire); (Custom cable length
available upon request)
6% VWC with generic calibration for supported
40 to 60 C
4
MAS-1