FIGURE 6-1. CS650 and CS655 average current drain
(p. 8) shows average current drain for different measurement rates and quantities of
CS650 sensors. If the time between measurements is five minutes or longer, average current
drain is approximately 0.15 milliamps per sensor.
6.2 Operational specifications
(p. 8) provides the operational specifications.
Table 6-2: Relative dielectric permittivity specifications
CS650
CS655
Relative dielectric permittivity
Range
1 to 81
Accuracy†
1 to 40:
40 to 80:
±(2% of r 0.6) for
solution electrical conductivity
(EC) ≤3 dS/m
±1.4 for solution EC ≤3 dS/m
±(3% of r 0.8) for solution
EC ≤8 dS/m
±2 for solution EC ≤2.8 dS/m
Precision‡
<0.02
CS650 and CS655 Water Content Reflectometers
8
