Instruction Manual

5
Specifications
Table 3: Sensor Cell Constants and Measuring Ranges
Sensor Cell Constant
Inherent Measuring Range
Conductivity (µS/cm) Resistivity (Mohm) TDS Salinity (PPT)
0.05 0–100 0.002–20 See Note
1
not applicable
0.5 0–1000 0.001-20 See Note1 < 1
1 0–2000 not applicable See Note1 < 2
5 0–10000 not applicable See Note1 < 15
10 0–200000 not applicable See Note1 < 500
2
1
To determine which cell constant to use, convert the full-scale TDS value to its equivalent conductivity value at 25 °C by
multiplying the TDS value by 2. Find that value in the conductivity column and use the cell constant that corresponds to that
value.
2
Practical upper limit is 280.
Table 4: Digital Gateway Specifications
Weight 145 g (5 oz)
Dimensions 17.5 x 3.4 cm (7 x 1
3
/8 in.)
Operating Temperature –20 to 60 °C (–4 to 140 °F)