SWT-4土壤张力计

SWT-4土壤张力计更新：2016-10-9 10:59:14点击：产品品牌Delta-T产品型号SWT-4产品描述SWT-4土壤张力计,SWT-4 - Rugged Tensiometer,...PDF下载 询价 申请样品

SWT4 Rugged Soil Tensiometer

• Excellent accuracy in wet and irrigated soils

• Easy refill model available
  A precision, water-filled, ceramic cup tensiometer with good accuracy (±0.5kPa) over the range +100 to -85 kPa. The SWT-4 Tensiometers contain water in the cup only, which gives improved frost resistance.

• SWT-4 models require refilling and degassing after dry periods, the SWT-4R models can be refilled once installed

• Please note: sensor cable length 2.5m from ceramic cup to 4-pin plug M12/IP67. Ceramic cup 6cm x 24m diameter

• Applications
  Applications include monitoring crop water stress, irrigation scheduling and tracking gradients of hydraulic potential when analysing directions and rates of water flow. 
  Their ability to respond to positive hydraulic heads allows them to monitor water table height when submerged (ａnd the overburden, if present).

• The SWT range of tensiometers requires a stabilised 10.6V DC, 1.3mA power source. 
  A DL2e Data Logger, with a TVB1 Voltage Regulator can power and log up to 30 tensiometers (or 60 with special cable arrangements). 
  Alternatively, a GP1 Data Logger, fitted with up to two GP1-PBA-X50 adapter board can log 1 or 2 tensiometers

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