Electrical Conductivity Conversion Chart
Suitablitiy for irrigation mS/cm dS/m µS/cm ppm grains/gallon 0 1 0 1 100 67 4 Good to fair 0 2 0 2 200 134 8 0 3 0 3 300 201 12 0 4 0 4 400 268 16
Information on Conductivity Measurement
value in S/m (siemens per meter) In practice, the smaller units µS/cm and mS/cm are commonly used Table 1: Conversion of conductivity units The following table illustrates the relationship between the salt concentration and the conductivity Table 2: Examples of conductivity values 1 To be precise, this refers to the specific electrical
CONVERSION OF TEST RESULTS AND OTHER EQUATIONS
Soluble Salts (SS ) = EC (mS/cm) x 0 35 [EC on 1:5 soil:water extraction] This is using an empicial factor assuming an approximate relationship between EC and total dissolved salts (TDS ~ EC x 700), although this factor is dependent on the type of salts present Note: 1 mS/cm = 1 dS/m = 1000 uS/cm)
Metric System Conversion Factors
133 Metric System Conversion Factors Area Equivalents 1 acre = 43,560 ft 2 = 4840 yd 3= 0 4047 hectares = 160 rods 2 = 4047 m = 0 0016 sq mile 1 acre-inch = 102 8 m = 27,154 gal = 3630 ft
THEORY AND APPLICATION OF CONDUCTIVITY
mS/cm (one thousandth of a S/cm) S/cm is the same as the older unit mho/cm Certain high purity water industries, primarily semiconductor and pharmaceuti-cal, use resistivity instead of conductivity Resistivity is the reciprocal of conductivity The units are MΩ cm Figure 2 shows the approximate conductivity of some typical electrolyte
Real-time pH and Conductivity Data Acquisition with the
the manufacturer’s user manual For a 1 00 M NaCl solution, the full scale conductivity was 76 11 ms/cm The analog output range is from 0 to 1000 mV The conductivity unit (ms/cm) per mV for the flow cell is then 76 11 ms/cm/1000 or 0 07611 ms/cm/mV This is the conversion constant for the mV output of the conductivity flow cell 8
Conversions and Formulas - aihticom
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