4
CALIBRATION
ES-2
4
Calibration
METER calibrates our EC sensors at the factory using KC1 solutions
of known concentration and calibration values are stored internally
in flash memory.
The following table relates EC at 25
◦
C to concentration for vari-
ous concentrations of KC1. Operators can verify ES-2 performance
using these solutions. The ES-2 internally corrects output value to
25
◦
C
Table 1: EC of KC1 solutions for testing ES-2 calibrations.
Electrical Conductivity
g KC1 per kg of distilled
(
µ
S/cm)
water
100
0.0446
200
0.0930
500
0.2456
1,000
0.5120
2,000
1.0673
5,000
2.8186
10,000
5.8758
20,000
12.2490
6
